CN113336855A - 丙酮酸光学探针及其制备方法和应用 - Google Patents
丙酮酸光学探针及其制备方法和应用 Download PDFInfo
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- CN113336855A CN113336855A CN202010099274.6A CN202010099274A CN113336855A CN 113336855 A CN113336855 A CN 113336855A CN 202010099274 A CN202010099274 A CN 202010099274A CN 113336855 A CN113336855 A CN 113336855A
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Abstract
本发明涉及一种丙酮酸光学探针及其制备方法和应用。一方面,本发明涉及一种光学探针,包含丙酮酸敏感多肽和光学活性多肽,其中光学活性多肽位于丙酮酸敏感多肽的序列内。本发明也涉及上述探针的制备方法及其在检测丙酮酸中的应用。
Description
技术领域
本发明涉及光学探针技术领域,尤其涉及一种丙酮酸光学探针及其制备方法和应用。
背景技术
丙酮酸是一种具有羰基和羧基两个官能团的有机酸,也是最简单的α-酮酸,其广泛存在于各类动植物中。丙酮酸和能量代谢密不可分,在糖酵解过程中消耗一分子葡萄糖或者糖原和两分子ATP,产生两分子NADH,四分子ATP和两分子丙酮酸。在细胞浆中丙酮酸能还原成供能,也能作为转运到线粒体成为三羧酸循环的主要燃料。丙酮酸在有氧条件下进入线粒体,经丙酮酸脱氢酶复合体催化氧化脱羧产生NADH、CO2和乙酰辅酶A,乙酰辅酶A进入三羧酸循环和氧化磷酸化彻底氧化为CO2和H2O,释放的能量在此过程中可产生大量ATP。这是糖的有氧氧化过程,是机体获得ATP的主要途径。
此外,丙酮酸可经转氨基作用生成丙氨酸,作为蛋白质合成的原料。丙酮酸还可通过乙酰辅酶A和三羧酸循环实现体内糖、脂肪和氨基酸间的相互转化。综上所述,丙酮酸在三大营养物质的代谢联系中起着重要的枢纽作用,是对真核和人体新陈代谢的许多方面至关重要的关键分子。
有研究已表明,丙酮酸可直接通过非酶促的去碳酸基反应抑制过氧化氢,具有防止自由基损伤的作用,已在心脏再灌注损伤和急性肾衰竭中证实具有保护机体抗功能性损伤。补充丙酮酸可增强柠檬酸循环,柠檬酸产生增多后,抑制磷酸果糖激酶,从而进入磷酸戊糖旁路,产生还原型辅酶Ⅱ(NADPH),从而间接地增加谷胱甘肽(GSH)抗氧化系统的能力。
正是由于丙酮酸具有上述重要的作用,因此丙酮酸含量的检测也尤为重要。丙酮酸的常用检测方法包括紫外分光光度计法、高效液相色谱法、脱氢酶比色法等。但是这些方法并不适用于活细胞研究,存在很多缺陷:需要经过耗时的样品处理过程,例如细胞破碎、分离提取纯化等;不能在活细胞和亚细胞器中进行原位、实时、动态、高通量和高时空分辨率的检测。本领域仍需要能在细胞内、外实时定位、定量、高通量检测丙酮酸的方法。
发明内容
本发明的目的在于提供在细胞内、外实时定位、高通量、定量检测丙酮酸的探针和方法。
为了实现上述发明目的,本发明提供以下技术方案:
本发明提供一种丙酮酸光学探针,包含丙酮酸敏感多肽或其功能变体和光学活性多肽或其功能变体,其中光学活性多肽或其功能变体位于丙酮酸敏感多肽或其功能变体的序列内。丙酮酸敏感多肽或其功能变体被光学活性多肽或其功能变体分为第一部分和第二部分。
本发明提供了一种丙酮酸光学探针,包括丙酮酸敏感多肽B和光学活性多肽A,其中光学活性多肽A位于丙酮酸敏感多肽B的序列内,将丙酮酸敏感多肽B分为第一部分B1和第二部分B2,形成B1-A-B2式的探针结构。
在一个实施方式中,丙酮酸敏感多肽包括丙酮酸结合蛋白或其丙酮酸结合域。在一个实施方式中,丙酮酸敏感多肽源自大肠杆菌。在一个实施方式中,丙酮酸敏感多肽是丙酮酸结合蛋白或其功能片段。在一个或多个实施方案中,所述丙酮酸结合蛋白是PdhR蛋白。在一个实施方式中,丙酮酸敏感多肽具有SEQ ID NO:1所示的序列,或与其有至少35%、至少40%、至少50%、至少60%、至少70%、至少80%、至少85%、至少90%、至少95%、至少99%序列相同性并保留丙酮酸结合功能的序列。在一个实施方式中,丙酮酸敏感多肽的功能片段具有SEQ ID NO:1所示的序列第96-254位氨基酸,或与其有至少35%、至少40%、至少50%、至少60%、至少70%、至少80%、至少85%、至少90%、至少95%、至少99%序列相同性并保留丙酮酸结合功能的序列。
在一个实施方式中,光学活性多肽是荧光蛋白或其功能变体。在一个实施方式中,荧光蛋白选自黄色荧光蛋白(如SEQ ID NO:2所示的cpYFP)、橘黄色荧光蛋白、红色荧光蛋白、绿色荧光蛋白(如SEQ ID NO:3所示的cpGFP)、蓝色荧光蛋白(如SEQ ID NO:4所示的cpBFP)、苹果红荧光蛋白(如SEQ ID NO:5所示的cpmApple)。优选地,光学活性多肽是cpYFP。在一个实施方式中,荧光蛋白具有SEQ ID NO:2-5中任一所示的序列。
在一个实施方式中,光学探针还包含侧接所述光学活性多肽的一个或多个接头。本发明所述接头可以是任何长度的任何氨基酸序列。在一个实施方式中,光学活性多肽侧翼包含不超过5个氨基酸的接头,例如0、1、2、3、4个氨基酸的接头。在一个实施方式中,光学活性多肽侧翼的接头包含氨基酸Y。在一个实施方式中,接头Y位于光学活性多肽的N端和/或C端。在一个实施方式中,光学探针如下所示:丙酮酸敏感多肽的第一部分B1-Y-光学活性多肽A-丙酮酸敏感多肽的第二部分B2。在一个实施方式中,本发明光学探针不包含接头。
本发明所述光学活性多肽可以位于丙酮酸敏感多肽的任何位置。在一个实施方式中,光学活性多肽位于丙酮酸敏感多肽的选自以下的一个或多个位置中:残基117-121、140-143、160-164、174-176、191-195和/或210-214,编号对应于丙酮酸结合蛋白的全长。在一个实施方式中,光学活性多肽置换丙酮酸敏感多肽的选自以下的一个或多个位置中的一个或多个氨基酸:残基117-121、140-143、160-164、174-176、191-195和/或210-214。
在一个实施方式中,光学活性多肽插入丙酮酸敏感多肽的选自以下的一个或多个位点:117/118,117/119,117/120,117/121,118/119,118/120,118/121,119/120,119/121,120/121,140/141,140/142,140/143,141/142,141/143,142/143,160/161,160/162,160/163,160/164,161/162,161/163,161/164,162/163,162/164,163/164,174/175,174/176,175/176,191/192,191/193,191/194,191/195,192/193,192/194,192/195,193/194,193/195,194/195,210/211,210/212,210/213,210/214,211/212,211/213,211/214,212/213,212/214和/或213/214。优选地,光学活性多肽位于丙酮酸敏感多肽的选自以下的一个或多个位点:117/121,141/143,191/192,191/193,191/194,191/195,192/193,192/194,192/195,193/194,193/195,194/195和210/214。
在一个或多个实施方式中,本发明光学探针可为当cpYFP位于丙酮酸结合蛋白或其功能片段的选自以下的一个或多个位点的探针:117/120,117/121,118/119,118/120,118/121,119/120,119/121,120/121,140/143,141/142,141/143,142/143,160/161,160/162,160/163,160/164,161/163,161/164,162/163,162/164,163/164,191/192,191/193,191/194,191/195,192/193,192/194,192/195,193/194,193/195,194/195,210/211,210/212,210/214,211/212,211/213,211/214,212/213,212/214。在示例性实施方式中,本发明光学探针可为当cpYFP位于丙酮酸结合蛋白或其功能片段的选自以下的一个或多个位点的探针:117/121,119/120,119/121,120/121,140/143,141/142,141/143,160/161,160/164,161/163,191/192,191/193,191/194,191/195,192/193,192/194,192/195,193/194,193/195,194/195,210/212,210/214,211/213和211/214。优选地,本发明光学探针可为当cpYFP位于丙酮酸结合蛋白或其功能片段的选自以下的一个或多个位点的探针:117/121,141/143,191/192,191/193,191/194,191/195,192/193,192/194,192/195,193/194,193/195,194/195和210/214时形成的探针。所述丙酮酸结合蛋白的功能片段是SEQ ID NO:1的第96-254位。
在一个或多个实施方式中,本发明光学探针可为当cpGFP位于丙酮酸结合蛋白功能片段的选自以下的一个或多个位点的探针:117/120,118/119,119/120,140/141,140/142,141/142,141/143,142/143,160/161,161/163,161/164,162/163,174/175,191/193,210/212,211/212,211/214,212/213,212/214和/或213/214。在优选的实施方式中,本发明光学探针可为当cpGFP位于丙酮酸结合蛋白功能片段的选自以下的一个或多个位点的探针:118/119,140/141,160/161,191/193,210/212,212/213,212/214和/或213/214。所述丙酮酸结合蛋白的功能片段是SEQ ID NO:1的第96-254位。
在示例性实施方式中,本发明光学探针可为当cpBFP位于丙酮酸结合蛋白或其功能片段的选自以下的一个或多个位点的探针:117/118,117/120,119/120,119/121,140/141,141/142,160/162,160/163,161/163,174/176,191/192,191/194,192/193,192/195,193/194,193/195,194/195,210/212,211/213或212/213。在优选的实施方式中,本发明光学探针可为当cpBFP位于丙酮酸结合蛋白或其功能片段的选自以下的一个或多个位点的探针:141/142,160/163,192/193,192/195,193/194,193/195,194/195,210/212,211/213。所述丙酮酸结合蛋白的功能片段是SEQ ID NO:1的第96-254位。
在示例性实施方式中,本发明光学探针可为当cpmApple位于丙酮酸结合蛋白或其功能片段的选自以下的一个或多个位点的探针:117/119,117/120,118/119,118/120,119/121,140/141,140/142,141/142,160/161,160/162,160/164,162/163,174/176,175/176,191/194,191/195,192/193,192/194,192/195,193/194,210/212,211/213,211/214,212/214。在优选的实施方式中,本发明光学探针可为当cpmApple位于丙酮酸结合蛋白或其功能片段的选自以下的一个或多个位点的探针:117/120,118/120,160/162,162/163,191/195,192/193,192/194,192/195,210/212,211/213。所述丙酮酸结合蛋白的功能片段是SEQ IDNO:1的第96-254位。
在一个实施方式中,本发明光学探针具有SEQ ID NO:6-18所示序列或由其组成。
本发明还提供具有一个或多个突变的丙酮酸敏感多肽。所述突变位于丙酮酸结合蛋白或其功能片段的Q138,S190,R191,R192,E193,M194,L195中的1个、2个、3个、4个、5个、6个或7个位点。示例性地,所述突变选自以下的1个、2个、3个、4个、5个、6个或7个:Q138S,Q138Y,Q138C,Q138L,Q138P,Q138H,Q138R,Q138W,Q138I,Q138T,Q138N,Q138K,Q138F,Q138V,Q138A,Q138D,Q138E,Q138M,Q138A,S190E,R191S,R191Y,R191C,R191L,R191P,R191H,R191Q,R191W,R191I,R191T,R191N,R191K,R191F,R191V,R191A,R191D,R191E,R191M,R191A,R192D,E193S,E193Y,E193C,E193L,E193P,E193H,E193Q,E193W,E193R,E193I,E193T,E193N,E193K,E193M,E193V,E193F,E193D,E193A,E193G,M194S,M194Y,M194C,M194L,M194P,M194H,M194Q,M194W,M194R,M194I,M194A,M194N,M194K,M194T,M194V,M194F,M194D,M194E,T102G,L195S,L195Y,L195C,L195D,L195P,L195H,L195Q,L195W,L195I,L195T,L195N,L195K,L195R,L195V,L195A,L195F,L195E,L195M和/或L195A。
本发明还提供包含具有一个或多个突变的丙酮酸敏感多肽的光学探针。在一个或多个实施方案中,光学探针是如上所述的插入有光学活性多肽的任意光学探针,并且所述光学探针中的丙酮酸敏感多肽在选自Q138,S190,R191,R192,E193,M194,L195中的1个、2个、3个、4个、5个、6个或7个位点具有突变。在一个或多个实施方案中,包含突变的丙酮酸敏感多肽的光学探针对丙酮酸的响应不低于未突变的对应物。在一个或多个实施方案中,所述突变选自以下的1个、2个、3个、4个、5个、6个或7个:Q138S,Q138Y,Q138C,Q138L,Q138P,Q138H,Q138R,Q138W,Q138I,Q138T,Q138N,Q138K,Q138F,Q138V,Q138A,Q138D,Q138E,Q138M,Q138A,S190E,R191S,R191Y,R191C,R191L,R191P,R191H,R191Q,R191W,R191I,R191T,R191N,R191K,R191F,R191V,R191A,R191D,R191E,R191M,R191A,R192D,E193S,E193Y,E193C,E193L,E193P,E193H,E193Q,E193W,E193R,E193I,E193T,E193N,E193K,E193M,E193V,E193F,E193D,E193A,E193G,M194S,M194Y,M194C,M194L,M194P,M194H,M194Q,M194W,M194R,M194I,M194A,M194N,M194K,M194T,M194V,M194F,M194D,M194E,T102G,L195S,L195Y,L195C,L195D,L195P,L195H,L195Q,L195W,L195I,L195T,L195N,L195K,L195R,L195V,L195A,L195F,L195E,L195M和/或L195A。
在示例性实施方式中,本发明B1-A-B2式光学探针可为丙酮酸合蛋白功能片段的141/143,191/193,192/194或192/195位点插入有cpYFP并具有Q138P,Q138L,R191Y,R191F,R191L,R191P,E193Q,E193L,M194D,M194V,M194H,M194W、M194V/S190E/R191N/R192D、M194V/S190D/R191Y/R192T、S190P/R191H/R192P、S190R/R191S/R192P、S190L/R191V、S190T/R191Q/R192E和/或R191S/R192T突变的探针,编号对应于丙酮酸结合蛋白的全长。在一个或多个实施方案中,本发明光学探针是在不同插入位点基础上的突变体,其中插入位点和突变的组合选自:191/193-Q138P,191/193-Q138L,191/193-R191Y,191/193-R191F,191/193-R191L,191/193-R191P,191/193-E193Q,191/193-E193L,192/194-M194D,192/194-M194V,192/194-M194H,192/194-M194W、192/194-M194V-S190E/R191N/R192D、192/194-M194V/S190D/R191Y/R192T、141/143-S190P/R191H/R192P、141/143-S190R/R191S/R192P、141/143-S190L/R191V、141/143-S190T/R191Q/R192E和141/143-R191S/R192T。在示例性实施方式中,所述丙酮酸结合蛋白功能片段是SEQ ID NO:1的第96-254位。优选地,本发明光学探针具有SEQ ID NO:19-30所示序列或由其组成。
本发明提供的光学探针包含氨基酸序列SEQ ID NO:6-30中任一或其变体。在一个实施方式中,本发明提供的光学探针包含与氨基酸序列SEQ ID NO:6-30中任一有35%、40%、50%、60%、70%、80%、85%、90%、95%、99%序列相同性的序列。在优选实施方式中,本发明提供的光学探针包含与氨基酸序列SEQ ID NO:6-30中任一实质上相似或相同的序列。在更优选的实施方式中,本发明提供的光学探针包含SEQ ID NO:19-30中任一或由其组成。
本发明还提供融合多肽,包含本文所述光学探针和其它多肽。在一些实施方式中,其他多肽位于所述光学探针的N端和/或C端。在一些实施方式中,其他多肽包括将光学探针定位到不同细胞器或亚细胞器的多肽、用于纯化的标签或者用于免疫印迹的标签。
本发明还提供编码本文所述多肽、探针或蛋白的核酸序列或其互补序列。在一个实施方案中,本发明的核酸序列选自(1)SEQ ID NO:6-30中任一所示氨基酸序列的编码序列或其互补序列,(2)与(1)具有至少99%、至少95%、至少90%、至少80%、至少70%或至少50%相同性的序列,(3)(1)或(2)的片段。在一个或多个实施方案中,所述片段是引物。在一个实施方案中,本发明核酸序列包含核苷酸序列SEQ ID NO:31或其变体,所述变体编码的氨基酸序列具有检测色氨酸的功能。在优选实施方案中,本发明提供一种核酸序列,包含与核苷酸序列SEQ ID NO:31具有至少99%、至少95%、至少90%、至少80%、至少70%或至少50%相同性的序列。本发明还涉及上述核酸序列的互补序列或其变体,其可包含编码本发明光学探针或融合多肽的片段、类似物、衍生物、可溶性片段和变体的核酸序列或其互补序列。
本发明还提供包含本文所述核酸序列或其互补序列的核酸构建物,该核酸序列编码本发明所述光学探针或融合多肽。在一个或多个实施方案中,所述核酸构建物是克隆载体、表达载体或重组载体。在一个或多个实施方案中,所述核酸序列与表达控制序列操作性连接。在一些实施方式中,表达载体选自原核表达载体、真核表达载体和病毒载体。
本发明还提供包含本发明所述核酸序列或核酸构建物的细胞。在一个或多个实施方案中,所述细胞表达本文所述光学探针或融合多肽。
本发明还提供包括本文所述丙酮酸光学探针或融合多肽或如本文所述方法制备的丙酮酸光学探针或融合多肽的检测试剂盒。
本发明提供制备本文所述光学探针的方法,包括:提供表达本文所述光学探针或融合多肽的细胞,在所述细胞表达的条件下培养所述细胞,和分离光学探针或融合多肽。在一个实施方案中,制备本文所述色氨酸光学探针或融合多肽的方法包括:1)将编码本文所述丙酮酸光学探针的表达载体转移到宿主细胞中;2)在适合所述表达载体表达的条件下培养所述宿主细胞,3)分离光学探针。
本发明还提供检测样品中丙酮酸的方法,包括:使本文所述光学探针或融合多肽或如本文所述方法制备的光学探针或融合多肽与样品接触,和检测光学活性多肽的变化。所述检测可以在体内、体外、亚细胞或原位进行。所述样品例如血液。
本文还提供定量样品中丙酮酸的方法,包括:使本文所述光学探针或融合多肽或如本文所述方法制备的光学探针或融合多肽与样品接触,检测光学活性多肽的变化,和根据光学活性多肽的变化定量样品中的丙酮酸。
本发明还提供筛选化合物(例如药物)的方法,包括:使本文所述光学探针或融合多肽或如本文所述方法制备的光学探针或融合多肽与候选化合物接触,检测光学活性多肽的变化,和根据光学活性多肽的变化筛选化合物。所述方法可以高通量地筛选化合物。
本发明还提供本文所述丙酮酸光学探针或融合多肽或如本文所述方法制备的丙酮酸光学探针或融合多肽在丙酮酸细胞内/外定位中的应用。在一个或多个实施方案中,所述定位是实时定位。
本发明的有益效果:本发明提供的丙酮酸光学探针易于成熟,荧光动态变化大,特异性好,并且能够通过基因操作的方法在细胞中表达,可在细胞内外实时定位、高通量、定量检测丙酮酸,省去了耗时的处理样品步骤。实验效果表明本申请所提供的丙酮酸光学探针对丙酮酸的最高响应达到对照的10倍以上,并且可以在细胞浆、线粒体、细胞核、内质网、溶酶体和高尔基体等亚细胞结构中对细胞进行定位、定性、定量检测,并且可以进行高通量的化合物筛选以及血液中丙酮酸定量检测。
附图说明
下面结合附图和实施例对本发明作进一步说明。
图1为实施例1所述的示例性丙酮酸光学探针的SDS-PAGE图;
图2为实施例2所述的示例性的包含cpYFP和丙酮酸结合蛋白的丙酮酸光学探针对丙酮酸响应变化图;
图3为实施例3所述的示例性的包含cpGFP和丙酮酸结合蛋白的丙酮酸光学探针对丙酮酸响应变化图;
图4为实施例4所述的示例性的包含cpBFP和丙酮酸结合蛋白的丙酮酸光学探针对丙酮酸响应变化图;
图5为实施例5所述的示例性的包含cpmApple和丙酮酸结合蛋白的丙酮酸光学探针对丙酮酸响应变化图;
图6为实施例6所述的示例性的在丙酮酸结合蛋白的位点191/193,192/194或192/195插入cpYFP基础上具有突变的丙酮酸光学探针对丙酮酸的响应;
图7A-B为实施例7所述的示例性的丙酮酸光学探针对不同浓度丙酮酸的滴定曲线;
图8A-C为实施例8所述的示例性丙酮酸光学探针的荧光光谱性质图;
图9为实施例8所述的示例性丙酮酸光学探针的特异性检测的柱状图;
图10为实施例9所述的示例性丙酮酸光学探针在哺乳动物细胞中的亚细胞器定位照片;
图11为实施例10所述的对示例性丙酮酸光学探针在哺乳动物细胞中对外源丙酮酸响应的示意图;
图12为实施例11所述的示例性丙酮酸光学探针在活细胞水平进行高通量化合物筛选的点图;
图13为实施例12所述的示例性丙酮酸光学探针对小鼠和人血液中的丙酮酸进行定量的柱状图。
具体实施方式
在给出数值或范围时,本文所用术语“约”指该数值或范围在给定数值或范围的20%以内、10%以内和5%以内。
本文所用术语“丙酮酸敏感多肽”或“丙酮酸响应多肽”指对丙酮酸产生响应的多肽,所述响应包括与敏感多肽的相互作用相关的多肽的化学,生物学,电学或生理学参数的任何响应。响应包括小的变化,例如,多肽的氨基酸或肽片段的方向的变化以及例如多肽的一级,二级或三级结构的变化,包括例如质子化,电化学势和/或构象的变化。“构象”是分子中包含侧基的分子的一级,二级和三级结构的三维排列;当分子的三维结构发生变化时,构象发生变化。构象变化的实例包括从α-螺旋转变为β-折叠或从β-折叠转变为α-螺旋。可以理解的是,只要荧光蛋白部分的荧光被改变,可检测到的改变不需要是构象改变。本文所述丙酮酸敏感多肽还可包括其功能变体。丙酮酸敏感多肽的功能变体包括但不限于可以与丙酮酸相互作用从而发生与亲本丙酮酸敏感多肽相同或相似变化的变体。
本发明所述丙酮酸敏感多肽包括但不限于丙酮酸结合蛋白PdhR或与其有90%以上同源性的变体。本发明所述示例性丙酮酸结合蛋白PdhR来源于大肠杆菌。PdhR是细菌转录因子由丙酮酸结合/调节域和DNA结合域组成。示例性PdhR蛋白如SEQ ID NO:1所示。在一个或多个实施方案中,丙酮酸敏感多肽包含PdhR蛋白的丙酮酸结合域,即96-254位氨基酸,而不包括DNA结合域。当描述本发明光学探针或丙酮酸结合蛋白时(例如描述插入位点或突变位点时),提及氨基酸残基编号均参考SEQ ID NO:1。
本文所用术语“光学探针”是指与光学活性多肽融合的丙酮酸敏感多肽。发明人发现,丙酮酸敏感多肽例如丙酮酸结合蛋白专一性地对生理浓度的丙酮酸结合后所产生的构象变化会引起光学活性多肽(例如荧光蛋白)的构象变化,进而导致光学活性多肽的光学性质发生改变。借助不同丙酮酸浓度下测定的荧光蛋白的荧光绘制标准曲线,可以检测并分析丙酮酸的存在和/或水平。
在本发明的光学探针中,光学活性多肽(例如荧光蛋白)可操作地插入丙酮酸敏感多肽中。基于蛋白质的“光学活性多肽”是具有发射荧光能力的多肽。荧光是光学活性多肽的一种光学性质,其可用作检测本发明的光学探针的响应性的手段。优选地,选择蛋白质底物以具有在未激活和活化的构象状态下容易区分的荧光特性。本文所述光学活性多肽还可包括其功能变体。光学活性多肽的功能变体包括但不限于可以发生与亲本光学活性多肽相同或相似荧光性质变化的变体。
“接头”或“连接区”指在本发明多肽、蛋白质或核酸中连接两个部分的氨基酸或核苷酸序列。示例性地,本发明中丙酮酸敏感多肽与光学活性多肽的连接区氨基端的氨基酸数目选择的是0-3个,羧基端的氨基酸数目选择的是0-2个;当重组光学探针作为基本单元与功能蛋白连接时,可以融合在重组光学探针的氨基酸或羧基端。接头序列可为一个或多个柔性氨基酸组成的短肽链,如Y。
本文所用术语“荧光蛋白”指在激发光照射下发出荧光的蛋白质。例如绿色荧光蛋白GFP及由该蛋白突变衍生出的环状重排的蓝色荧光蛋白(cpBFP)、环状重排的绿色荧光蛋白(cpGFP)、环状重排的黄色荧光蛋白(cpYFP)等;还有本技术领域常用的红色荧光蛋白RFP,及由该蛋白衍生出来的环状重排的蛋白,如cpmApple,cpmOrange,cpmKate等。本领域知晓可用于本发明的荧光蛋白及其序列。示例性地,cpYFP如SEQ ID NO:2所示;cpGFP如SEQID NO:3所示;cpBFP如SEQ ID NO:4所示;cpmApple如SEQ ID NO:5所示。
本发明所述的丙酮酸光学探针包括丙酮酸敏感多肽(B)的丙酮酸结合域96-254位氨基酸,例如丙酮酸结合蛋白或其变体,和光学活性多肽(A),例如荧光蛋白。光学活性多肽(A)插入到丙酮酸敏感多肽(B)的丙酮酸结合域96-254位氨基酸中,将B分为B1和B2两个部分,形成B1-A-B2式的探针结构;丙酮酸敏感多肽B和丙酮酸相互作用导致光学活性多肽(A)的光学信号变强。
在本发明的光学探针中,光学活性多肽可以位于丙酮酸敏感多肽的任何位置。在一个实施方式中,光学活性多肽以N-C方向位于N-C方向的丙酮酸敏感多肽的任何位置。具体地,光学活性多肽位于丙酮酸敏感多肽的柔性区域,所述的柔性区域是指蛋白质高级结构中存在的一些特定的如环状结构域等结构,这些结构域相比于蛋白质的其他高级结构具有更高的移动性和柔性,并且该区域可以在该蛋白质和配体结合后,空间结构构象发生动态变化。本发明中所述的柔性区域主要指丙酮酸结合蛋白中的插入位点所在区域,如氨基酸残基117-121、140-143、160-164、174-176、191-195和210-214区域。示例性地,光学活性多肽位于丙酮酸结合蛋白的氨基酸序列的选自以下的一个或多个位点:117/118,117/119,117/120,117/121,118/119,118/120,118/121,119/120,119/121,120/121,140/141,140/142,140/143,141/142,141/143,142/143,160/161,160/162,160/163,160/164,161/162,161/163,161/164,162/163,162/164,163/164,174/175,174/176,175/176,191/192,191/193,191/194,191/195,192/193,192/194,192/195,193/194,193/195,194/195,210/211,210/212,210/213,210/214,211/212,211/213,211/214,212/213,212/214或213/214。在优选实施方式中,光学活性多肽位于丙酮酸结合蛋白或其功能片段的氨基酸序列的选自以下的一个或多个位点:117/121,141/143,191/192,191/193,191/194,191/195,192/193,192/194,192/195,193/194,193/195,194/195或210/214处。本文中,如果以“X/Y”形式表示的位点中的两个数字是连续的整数,则表示光学活性多肽位于该数字所述的氨基酸之间。例如插入位点117/118表示光学活性多肽位于丙酮酸敏感多肽或其功能片段的氨基酸117与118之间。如果以“X/Y”形式表示的位点中的两个数字不是连续的整数,则表示光学活性多肽置换该数字所示氨基酸之间的氨基酸。例如插入位点191/195表示光学活性多肽置换丙酮酸敏感多肽或其功能片段的氨基酸192-194。在优选实施方式中,光学活性多肽位于丙酮酸结合蛋白或其功能片段的氨基酸序列的选自以下的一个或多个位点:117/118,117/119,117/120,117/121,118/119,118/120,118/121,119/120,119/121,120/121,140/141,140/142,140/143,141/142,141/143,142/143,160/161,160/162,160/163,160/164,161/162,161/163,161/164,162/163,162/164,163/164,174/175,174/176,175/176,191/192,191/193,191/194,191/195,192/193,192/194,192/195,193/194,193/195,194/195,210/211,210/212,210/213,210/214,211/212,211/213,211/214,212/213,212/214或213/214,所述功能片段包含丙酮酸结合蛋白的第96-254位氨基酸。在更优选的实施方式中,光学活性多肽位于包含第96-254位氨基酸的丙酮酸结合蛋白功能片段的氨基酸序列的选自以下的一个或多个位点:117/121,141/143,191/192,191/193,191/194,191/195,192/193,192/194,192/195,193/194,193/195,194/195或210/214处,如SEQ ID NO:6-18所示。
提到某多肽或蛋白时,本发明所用术语“变体”或“突变体”包括具有所述多肽或蛋白相同功能、但序列不同的变体。多肽或蛋白的变体可包括:同源序列、保守性变体、等位变体、天然突变体、诱导突变体。这些变体包括但并不限于:在所述多肽或蛋白的序列中缺失、插入和/或取代一个或多个(通常为1-30个,较佳地1-20个,更佳地1-10个,最佳地1-5个)氨基酸,以及在其羧基末端和/或氨基末端添加一个或数个(通常为20个以内,较佳地为10个以内,更佳地为5个以内)氨基酸获得的序列。这些变体还可包含与所述多肽或蛋白的序列相同性为至少约70%、至少约75%、至少约80%、至少约85%、至少约90%、至少约95%、至少约98%、至少约99%或100%的多肽或蛋白。不希望受理论限制,氨基酸残基发生改变而不改变多肽或蛋白质的总体构型和功能,即功能保守突变。例如,在本领域中,用性能相近或相似的氨基酸进行取代时,通常不会改变多肽或蛋白的功能。在本领域中,性能相似的氨基酸往往指具有相似侧链的氨基酸家族,在本领域已有明确定义。这些家族包括具有碱性侧链的氨基酸(例如赖氨酸、精氨酸、组氨酸)、具有酸性侧链的氨基酸(例如天冬氨酸、谷氨酸)、具有不带电荷的极性侧链的氨基酸(例如甘氨酸、天冬酰胺、谷氨酰胺、丝氨酸、苏氨酸、酪氨酸、半胱氨酸)、具有非极性侧链的氨基酸(例如丙氨酸、缬氨酸、亮氨酸、异亮氨酸、精氨酸、苯丙氨酸、甲硫氨酸、色氨酸)、具有β-分支侧链的氨基酸(例如苏氨酸、缬氨酸、异亮氨酸)和具有芳香侧链的氨基酸(例如酪氨酸、苯丙氨酸、色氨酸、组氨酸)。又比如,在氨基末端和/或羧基末端添加一个或数个氨基酸通常也不会改变多肽或蛋白的功能。对于许多常见已知非遗传性编码氨基酸的保守氨基酸取代本领域已知。其他非编码氨基酸的保守取代可基于其物理性质与遗传上编码的氨基酸的性质的比较来确定。
在两种或多种多肽或核酸分子序列中,术语“相同性”或“相同性百分数”指在比较窗口或指定区域上,采用本领域已知方法如序列比较算法,通过手工比对和目测检查来比较和比对最大对应性时,两个或多个序列或子序列相同或其中在指定区域有一定百分数的氨基酸残基或核苷酸相同(例如,至少60%、至少65%、至少70%、至少75%、至少80%、至少85%、至少90%、至少91%、至少92%、至少93%、至少94%、至少95%、至少96%、至少97%、至少98%、至少99%或100%相同)。例如,适合测定序列相同性百分数和序列相似性百分数的优选算法是BLAST和BLAST 2.0算法,分别可参见Altschul等(1977)Nucleic AcidsRes.25:3389和Altschul等(1990)J.Mol.Biol.215:403。
本领域技术人员公知,在基因克隆操作中,常常需要设计合适的酶切位点,这势必在所表达的多肽或蛋白末端引入了一个或多个不相干的残基,而这并不影响目的多肽或蛋白的活性。又如为了构建融合蛋白、促进重组蛋白的表达、获得自动分泌到宿主细胞外的重组蛋白、或利于重组蛋白的纯化,常常需要将一些氨基酸添加至重组蛋白的N-末端、C-末端或该蛋白内的其它合适区域内,例如,包括但不限于,适合的接头肽、信号肽、前导肽、末端延伸、谷胱甘肽S-转移酶(GST)、麦芽糖E结合蛋白、蛋白A、如6His或Flag的标签,或Xa因子或凝血酶或肠激酶的蛋白水解酶位点。
本发明光学探针可包含具有突变的丙酮酸敏感多肽。所述突变例如Q138,S190,R191,R192,E193,M194,和/或L195等位点的突变。示例性地,所述突变选自以下的一个或多个:Q138S,Q138Y,Q138C,Q138L,Q138P,Q138H,Q138R,Q138W,Q138I,Q138T,Q138N,Q138K,Q138F,Q138V,Q138A,Q138D,Q138E,Q138M,Q138A,S190E,R191S,R191Y,R191C,R191L,R191P,R191H,R191Q,R191W,R191I,R191T,R191N,R191K,R191F,R191V,R191A,R191D,R191E,R191M,R191A,R192D,E193S,E193Y,E193C,E193L,E193P,E193H,E193Q,E193W,E193R,E193I,E193T,E193N,E193K,E193M,E193V,E193F,E193D,E193A,E193G,M194S,M194Y,M194C,M194L,M194P,M194H,M194Q,M194W,M194R,M194I,M194A,M194N,M194K,M194T,M194V,M194F,M194D,M194E,T102G,L195S,L195Y,L195C,L195D,L195P,L195H,L195Q,L195W,L195I,L195T,L195N,L195K,L195R,L195V,L195A,L195F,L195E,L195M和/或L195A。在优选实施方式中,所述突变选自以下的一个或多个:Q138P,Q138L,S190E,R191Y,R191N,R191F,R191L,R191P,R192D,E193Q,E193L,M194D,M194V,M194H,M194W,M194V和S190E和R191N和R192D(M194V/S190E/R191N/R192D),M194V和S190D和R191Y和R192T(M194V/S190D/R191Y/R192T)、S190P和R191H和R192P(S190P/R191H/R192P)、S190R和R191S和R192P(S190R/R191S/R192P)、S190L和R191V(S190L/R191V)、S190T和R191Q和R192E(S190T/R191Q/R192E)或R191S和R192T(R191S/R192T)。
在示例性实施方式中,本发明B1-A-B2式光学探针可为PdhR(96-254)的选自117/121,141/143,191/192,191/193,191/194,191/195,192/193,192/194,192/195,193/194,193/195,194/195,210/214的一个或多个位点插入有cpYFP并具有选自以下的一个或多个突变的探针:Q138P,Q138L,R191Y,R191F,R191L,R191P,E193Q,E193L,M194D,M194V,M194H,M194W,M194V和S190E和R191N和R192D(M194V/S190E/R191N/R192D),M194V和S190D和R191Y和R192T(M194V/S190D/R191Y/R192T)、S190P和R191H和R192P(S190P/R191H/R192P)、S190R和R191S和R192P(S190R/R191S/R192P)、S190L和R191V(S190L/R191V)、S190T和R191Q和R192E(S190T/R191Q/R192E)或R191S和R192T(R191S/R192T)。优选地,所述光学探针为PdhR(96-254)的191/193位点插入有cpYFP并且具有Q138P,Q138L,R191Y,R191F,R191L,R191P,E193Q或E193L突变的探针,或PdhR(96-254)的192/194位点插入有cpYFP并且具有M194D,M194V,M194H或M194W突变的探针。在一个实施方式中,丙酮酸敏感多肽中光学活性多肽的插入位点与丙酮酸敏感多肽的突变的组合选自以下一种或多种:191/193-Q138P,191/193-Q138L,191/193-R191Y,191/193-R191F,191/193-R191L,191/193-R191P,191/193-E193Q,191/193-E193L,192/194-M194D,192/194-M194V,192/194-M194H,192/194-M194W192/194-M194V/S190E/R191N/R192D,192/194-M194V/S190D/R191Y/R192T、141/143-S190P/R191H/R192P、141/143-S190R/R191S/R192P、141/143-S190L/R191V、141/143-S190T/R191Q/R192E和/或141/143-R191S/R192T。这些光学探针的序列如SEQ ID NO:19-30所示。
本文所用术语“功能片段”、“衍生物”和“类似物”是指基本上保持与原始多肽或蛋白(例如PdhR蛋白或荧光蛋白)相同的生物学功能或活性的蛋白。本发明的多肽或蛋白(例如PdhR蛋白或荧光蛋白)的功能变体、衍生物或类似物可以是(i)有一个或多个保守或非保守性氨基酸残基(优选保守性氨基酸残基)被取代的蛋白,而这样的取代的氨基酸残基可以是也可以不是由遗传密码编码的,或(ii)在一个或多个氨基酸残基中具有取代基团的蛋白,或(iii)成熟蛋白与另一个化合物(比如延长蛋白半衰期的化合物,例如聚乙二醇)融合所形成的蛋白,或(iv)附加的氨基酸序列融合到此蛋白序列而形成的蛋白(如分泌序列或用来纯化此蛋白的序列或蛋白原序列,或与抗原IgG片段的形成的融合蛋白)。根据本文的教导,这些功能变体、衍生物和类似物属于本领域熟练技术人员公知的范围。所述类似物与原始多肽或蛋白的差别可以是氨基酸序列上的差异,也可以是不影响序列的修饰形式上的差异,或者兼而有之。这些蛋白包括天然或诱导的遗传变体。诱导变体可以通过各种技术得到,如通过辐射或暴露于诱变剂而产生随机诱变,还可通过定点诱变法或其他已知分子生物学的技术得到。
本发明融合多肽包含本文所述光学探针和其它多肽。在一些实施方式中,本文所述光学探针还包含与之融合的其它多肽。本文所述其他多肽不影响光学探针的性质。其他多肽可位于所述光学探针的N端和/或C端。在一些实施方式中,其他多肽包括将光学探针定位到不同细胞器或亚细胞器的多肽、用于纯化的标签或者用于免疫印迹的标签。本文所述融合多肽中的光学探针和其它多肽之间可具有接头。本文所述亚细胞器包括细胞浆、线粒体、细胞核、内质网、细胞膜、高尔基体、溶酶体和过氧化物酶体等。在一些实施方式中,用于纯化的标签或者用于免疫印迹的标签包括6组氨酸(6*His)、谷胱甘肽硫转移酶(GST)、Flag。
本发明表达载体包含与表达控制序列操作性连接的本发明所述的核酸序列或其互补序列,该核酸序列编码本发明所述光学探针或融合多肽。在一些实施方式中,表达载体选自原核表达载体、真核表达载体和病毒载体。在一些实施方式中,原核表达载体优选由质粒pCDFDuet-1与本文所述的核酸序列操作性连接得到。在一些实施方式中,表达控制序列包括复制起点、启动子、增强子、操纵子、终止子、核糖体结合位点。
本发明还提供了上述丙酮酸光学探针的制备方法,包括以下步骤:1)将编码本文所述丙酮酸光学探针的核酸序列纳入表达载体;2)将表达载体转移到宿主细胞中;2)在适合所述表达载体表达的条件下培养所述宿主细胞,3)分离丙酮酸光学探针。
本发明所用术语“核酸”或“核苷酸”或“多核苷酸”或“核酸序列”可以是DNA形式或RNA形式。DNA形式包括cDNA、基因组DNA或人工合成的DNA。DNA可以是单链的或是双链的。DNA可以是编码链或非编码链。提到核酸时,本文所用术语“变体”可以是天然发生的等位变体或非天然发生的变体。这些核苷酸变体包括简并变体、取代变体、缺失变体和插入变体。本发明核酸可包含与所述核酸序列的序列相同性为至少约50%、至少约60%、至少约70%、至少约75%、至少约80%、至少约85%、至少约90%、至少约95%、至少约98%、至少约99%或100%的核苷酸序列。本发明还涉及与上述的序列杂交的核酸片段。在示例性实施方式中,核酸序列如SEQ ID NO:31所示,其表示丙酮酸合蛋白功能片段的192/194位点插入有cpYFP并具有M194V突变的探针的编码序列。如本文所用,“核酸片段”的长度至少含15个核苷酸,较好是至少30个核苷酸,更好是至少50个核苷酸,最好是至少100个核苷酸以上。核酸片段可用于核酸的扩增技术(如PCR)。
本发明光学探针或融合蛋白的全长序列或其片段通常可以用PCR扩增法、人工合成法或重组法获得。对于PCR扩增法,可根据本发明所公开的核苷酸序列设计引物,并用市售的cDNA库或按本领域技术人员已知的常规方法所制备的cDNA库作为模板,扩增而得有关序列。当核苷酸序列大于2500bp时,优选的进行2~6次PCR扩增,然后将各次扩增的片段按正确次序拼接在一起。本发明对所述的PCR扩增的程序和体系没有特殊限定,采用本领域常规的PCR扩增程序和体系即可。还可以用重组法来大批量地获得有关序列。这通常是将其克隆入载体,再转入细胞,然后通过常规方法从增殖后的宿主细胞中分离和纯化得到有关多肽或蛋白。此外,还可用人工合成的方法来合成有关序列,尤其是片段长度较短时。在本发明中,在光学探针的核苷酸序列小于2500bp时,可采用人工合成方法来合成。所述人工合成方法为本领域常规的DNA的人工合成方法,无其他特殊要求。通常,通过先合成多个小片段,然后再进行连接可获得序列很长的片段。本发明多肽的DNA序列也可完全通过化学合成来得到。然后可将该DNA序列引入本领域中已知的各种现有的DNA分子(如载体)和细胞中。可通过突变PCR或化学合成等方法将突变引入本发明蛋白序列中。
本发明还提供包括本文所述光学探针或融合多肽或多核苷酸或如本文所述方法制备的光学探针或融合多肽的检测试剂盒。该试剂盒还任选包含利用光学探针检测丙酮酸所需的其他试剂。本领域知晓常规的所述其他试剂。
本发明也涉及核酸构建物,该核酸构建物含有本文所述的多核苷酸,以及与这些序列操作性连接的一个或多个调控序列。本发明所述的多核苷酸可以多种方式被操作以保证所述多肽或蛋白的表达。在将核酸构建物插入载体之前可根据表达载体的不同或要求而对核酸构建物进行操作。利用重组DNA方法来改变多核苷酸序列的技术是本领域已知的。
在某些实施方案中,所述核酸构建物是载体。载体可以是克隆载体,也可以是表达载体,或者是基因敲入载体,例如同源重组载体。本发明的多核苷酸可被克隆入许多类型的载体,例如,质粒、噬菌粒、噬菌体衍生物、动物病毒和粘粒。克隆载体可用于提供本发明蛋白或多肽的编码序列。表达载体可以以细菌载体或病毒载体形式提供给细胞。通常通过可操作地连接本发明的多核苷酸至启动子,并将构建体并入表达载体,实现本发明多核苷酸的表达。该载体对于复制和整合真核细胞可为合适的。典型的表达载体包含可用于调节期望核酸序列表达的表达控制序列。基因敲入载体用于将本文所述的表达框敲入或整合到宿主基因组中。
本文所用术语“表达控制序列”指调控目的基因的转录、翻译和表达的可以与目的基因操作性连接的元件,可以是复制起点、启动子、标记基因或翻译控制元件,包括增强子、操纵子、终止子、核糖体结合位点等,表达控制序列的选择取决于所用的宿主细胞。在重组表达载体中,“操作性连接”是指目的的核苷酸序列与调节序列以允许核苷酸序列表达的方式连接。本领域的技术人员熟知能用于构建含本发明融合蛋白编码序列和合适的转录/翻译控制信号的表达载体的方法。这些方法包括体外重组DNA技术、DNA合成技术、体内重组技术等。所述的DNA序列可有效连接到表达载体中的适当启动子上,以指导mRNA合成。这些启动子的代表性例子有:大肠杆菌的lac或trp启动子;λ噬菌体PL启动子;真核启动子包括CMV立即早期启动子、HSV胸苷激酶启动子、早期和晚期SV40启动子、反转录病毒的LTR和其他一些已知的可控制基因在原核或真核细胞或其病毒中表达的启动子。表达载体还包括翻译起始用的核糖体结合位点和转录终止子。在一个实施方式中,表达载体可采用市售的pRSETb载体,无其他特殊要求。示例性地,采用BamHI和EcoRI分别对编码所述光学探针的核苷酸序列和表达载体进行双酶切,然后将二者的酶切产物连接得到重组表达载体。本发明对酶切和连接的具体步骤和参数没有特殊限定,采用本领域常规的步骤和参数即可。
在获得重组表达载体后,将该载体转化到宿主细胞中,以产生包括融合蛋白的蛋白或肽。此种转移过程可用转化或转染等本领域技术人员熟知的常规技术进行。本发明所述的宿主细胞是指能够接收和容纳重组DNA分子的细胞,是重组基因扩增的场所,理想的受体细胞应该满足易于获取和增殖两个条件。本发明的“宿主细胞”可包括原核细胞和真核细胞,具体包括细菌细胞、酵母细胞、昆虫细胞和哺乳动物细胞。所述宿主细胞优选各种利于基因产物表达或发酵生产的细胞,此类细胞已为本领域熟知并常用。本领域一般技术人员都清楚如何选择适当的载体、启动子、增强子和宿主细胞。
本发明所述的转移到宿主细胞的方法为本领域常规的方法,包括磷酸钙或氯化钙共沉淀、DEAE-甘露聚糖-介导的转染、脂转染、天然感受态、化学介导的转移或电穿孔。当宿主为原核生物如大肠杆菌时,所述方法优选的为CaCl2法或MgCl2法处理,所用的步骤为本领域公知。当宿主细胞是真核细胞时,可选用如下的DNA转染方法:磷酸钙共沉淀法,常规机械方法如显微注射、电穿孔、脂质体包装等。
本发明在将表达载体转入宿主细胞后,对转入表达载体的宿主细胞进行扩增表达培养,分离得到丙酮酸光学探针。所述宿主细胞扩增表达培养采用常规的方法即可。根据所用的宿主细胞种类,培养中所用的培养基可以是各种常规培养基。在适于宿主细胞生长的条件下进行培养。
在本发明中,光学探针在细胞内、细胞膜上表达、或分泌到细胞外。如果需要,可利用其物理的、化学的和其它特性通过各种分离方法分离或纯化重组的蛋白。本发明对分离所述丙酮酸荧光蛋白的方法没有特殊限定,采用本领域常规的融合蛋白的分离方法即可。这些方法是本领域技术人员所熟知的,包括但并不限于:常规的复性处理、盐析方法、离心、渗透破菌、超声处理、超离心、分子筛层析、吸附层析、离子交换层析、高效液相层析(HPLC)和其它各种液相层析技术及这些方法的结合。在一个实施方式中,利用His标签的亲和层析法进行光学探针的分离。
本发明还提供了所述丙酮酸光学探针在丙酮酸实时定位、定量检测以及高通量化合物筛选中的应用。在一个方面,所述的丙酮酸光学探针优选与细胞不同部位的信号肽连接,转入到细胞中,通过检测细胞中荧光信号的强弱,进行丙酮酸的实时定位;通过丙酮酸标准滴加曲线进行相应丙酮酸的定量检测。本发明所述的丙酮酸标准滴加曲线是根据丙酮酸光学探针在不同浓度丙酮酸的情况下的荧光信号绘制而成。本发明所述丙酮酸光学探针直接转入细胞中,在丙酮酸实时定位和定量检测过程中,不需要耗时的样品处理过程,更加准确。本发明丙酮酸光学探针在进行高通量化合物筛选时,将不同的化合物添加到细胞培养液中,测定丙酮酸含量的变化,从而筛选出对丙酮酸含量变化有影响的化合物。在本发明中所述的丙酮酸光学探针在丙酮酸实时定位、定量检测以及高通量化合物筛选中的应用,均是非诊断和治疗目的,不涉及疾病的诊断和治疗。
在本文中,浓度、含量、百分数和其它数值均可用范围的形式表示。也应理解,使用这种范围形式只是为了方便和简洁,应该被弹性地解读为包括范围上下限所明确提及的数值,还应包括该范围内包括的所有单个数值或子范围。
实施例
下面结合实施例对本发明提供的丙酮酸光学探针进行详细的说明,但是不能把它们理解为对本发明保护范围的限定。
I.实验材料和试剂
实施例中主要采用常规的基因工程分子生物学克隆方法和细胞培养以及成像方法等,这些方法是本领域普通技术人员所熟知的,例如:简·罗斯凯姆斯等的《分子生物学实验参考手册》,J.萨姆布鲁克,D.W.拉塞尔著,黄培堂等译:《分子克隆实验指南》(第三版,2002年8月,科学出版社出版,北京);费雷谢尼等的《动物细胞培养:基本技术指南》(第五版),章静波,徐存拴等译;J.S.博尼费斯农,M.达索等的《精编细胞生物学实验指南》,章静波等译。
实施例中所用的基于pRSETb-cpYFP,pRSETb-丙酮酸结合蛋白质粒由华东理工大学蛋白质实验室构建,pRSETb质粒载体购自Invitrogen公司。所有用于PCR的引物均由上海捷瑞生物工程技术有限公司合成、纯化和经质谱法鉴定正确。实施例中构建的表达质粒都经过序列测定,序列测定由华大基因公司和杰李测序公司完成。各实施例所用的Taq DNA聚合酶购自东盛生物,pfu DNA聚合酶购自天根生化科技(北京)有限公司,primeSTAR DNA聚合酶购自TaKaRa公司,三种聚合酶购买时都附带赠送对应聚合酶缓冲液和dNTP。BamHI、BglII、HindIII、NdeI、XhoI、EcoRI、SpeI等限制性内切酶、T4连接酶、T4磷酸化酶(T4 PNK)购自Fermentas公司,购买时附带有相对应的缓冲液等。转染试剂Lip2000 Kit购于Invitrogen公司。丙酮酸等氨基酸均购自Sigma公司。除非特别声明,无机盐类等化学试剂均购自Sigma-Aldrich公司。HEPES盐,氨苄青霉素(Amp)和嘌呤霉素购自Ameresco公司。96孔检测黑板、384孔荧光检测黑板购自Grenier公司。
实施例中所用的DNA纯化试剂盒购自BBI公司(加拿大),普通质粒小抽试剂盒购自天根生化科技(北京)有限公司。克隆菌株Mach1购自Invitrogen公司。镍柱亲和层析柱和脱盐柱填料均来自GE healthcare公司。
实施例中用到的主要仪器包括:Biotek Synergy 2多功能酶标仪(美国Bio-Tek公司),X-15R高速冷冻离心机(美国Beckman公司),Microfuge22R台式高速冷冻离心机(美国Beckman公司),PCR扩增仪(德国Biometra公司),超声破碎仪(宁波新芝公司),核酸电泳仪(申能博彩公司),荧光分光光度计(美国Varian公司),CO2恒温细胞培养箱(SANYO),倒置荧光显微镜(日本尼康公司)。
II.分子生物学方法和细胞实验方法
II.1聚合酶链式反应(PCR):
1.目的片段扩增PCR:
该方法主要用于基因片段扩增和菌落PCR鉴定阳性克隆。所述PCR扩增的反应体系如下:模板序列0.5-1μL,正向引物(25μM)0.5μL,反向引物(25μM)0.5μL,10×pfu缓冲液5μL,pfu DNA聚合酶0.5μL,dNTP(10mM)1μL,灭菌超纯水(ddH2O)41.5-42μL,总体积50μL。PCR扩增程序如下:95℃变性2-10分钟,30轮循环(94-96℃持续30-45秒,50-65℃持续30-45秒,72℃持续一定时间(600bp/min)),72℃延伸10分钟。
2.长片段(>2500bp)扩增PCR:
本发明中使用的长片段扩增,主要是反向PCR扩增载体,在下述实施例中用于获得定点突变的一种技术。在变异部位设计反向PCR引物,其中一条引物的5’端包含变异的核苷酸序列。扩增后的产物就含有相应的突变位点。长片段扩增PCR反应体系如下:模板序列(10pg-1ng)1μL,正向引物(25μM)0.5μL,反向引物(25μM)0.5μL,5×PrimerSTAR缓冲液10μL,PrimerSTAR DNA聚合酶0.5μL,dNTP(2.5mM)4μL,灭菌超纯水(ddH2O)33.5μL,总体积50μL。PCR扩增程序如下:95℃变性5分钟,30轮循环(98℃持续10秒,50-68℃持续5-15秒,72℃持续一定时间(1000bp/min)),72℃延伸10分钟;或者95℃变性5分钟,30轮循环(98℃持续10秒,68℃持续一定时间(1000bp/min)),72℃延伸10分钟。
II.2核酸内切酶酶切反应:
对质粒载体进行双酶切的体系如下:质粒载体20μL(约1.5μg),10×缓冲液5μL,限制性内切酶11-2μL,限制性内切酶21-2μL,用灭菌超纯水补至总体积50μL。反应条件37℃,1-7小时。
II.3DNA片段5’端磷酸化反应
从微生物中抽提出的质粒或者基因组末端都含有磷酸基团,而PCR产物没有,故需对PCR产物的5’端碱基进行磷酸基团加成反应,只有末端含有磷酸基团DNA分子才能发生连接反应。磷酸化反应体系如下:PCR产物片段DNA序列5-8μL,10×T4连接酶缓冲液1μL,T4多聚核苷酸激酶(T4 PNK)1μL,灭菌超纯水0-3μL,总体积10μL。反应条件37℃,30分钟-2小时后72℃灭活20分钟。
II.4目的片段和载体的连接反应
不同的片段和载体之间的连接方法有所差异,本发明中使用了三种连接方法
1.平末端短片段和线性化载体的平末端连接
该方法的原理是PCR获得的平末端产物在T4 PNK作用下对DNA片段的5’末端进行磷酸化反应后,与线性化的载体在PEG4000和T4 DNA连接酶的作用下连接获得重组质粒。同源重组连接体系如下:T4 PNK处理的DNA片段4μL,线性化载体片段4μL,PEG4000 1μL,10×T4连接酶缓冲液1μL,T4 DNA连接酶1μL,总计10μL。反应条件22℃,30分钟。
2.含有粘性末端的DNA片段和含有粘性末端载体片段的连接
通过限制性内切酶切割的DNA片段通常会产生突出的粘性末端,因此可以和含有序列互补的粘性末端载体片段连接,形成重组质粒。连接反应体系如下:酶切后的PCR产物片段DNA 1-7μL,酶切后的质粒0.5-7μL,10×T4连接酶缓冲液1μL,T4 DNA连接酶1μL,灭菌超纯水补至总体积10μL。反应条件16℃,4-8小时。其中PCR产物片段与载体双酶切产物的质量比大致在2:1-6:1之间。
3.反向PCR引入定点突变后5’端磷酸化的DNA片段产物自身环化的连接反应
将5’端磷酸化的DNA片段通过自身环化连接反应将线性化载体的3’端和5’端连接反应得到重组质粒。自身环化连接反应体系如下:磷酸化反应体系10μL,T4连接酶(5U/μL)0.5μL,总体积10.5μL。反应条件16℃,4-16小时。
II.5感受态细胞的制备与转化
感受态细胞的制备:
1.挑取单菌落(如Mach1)接种于5mL LB培养基中,37℃摇床过夜。2.取0.5-1mL过夜培养的菌液转种到50mL LB培养基中,37℃,220rpm培养3至5小时,直到OD600达到0.5。3.冰浴预冷细胞2小时。4.4℃,4000rpm离心10分钟。5.弃上清,用5mL预冷的缓冲液重悬细胞,待均匀后再加入重悬缓冲液至终体积为50mL。6.冰浴45分钟。7.4℃ 4000rpm离心10分钟,用5mL冰预冷的储存缓冲液重悬细菌。8.每个EP管中放100μL菌液,-80℃或液氮冻存。
其中,重悬缓冲液:CaCl2(100mM)、MgCl2(70mM)、NaAc(40mM)。储存缓冲液:0.5mLDMSO、1.9mL 80%甘油、1mL 10×CaCl2(1M)、1mL 10×MgCl2(700mM)、1mL 10×NaAc(400mM)、4.6mL ddH2O。
感受态细胞的转化:
1.取100μL感受态细胞于冰浴上融化。2.加入适当体积的连接产物,轻轻吹打混匀,冰浴30分钟。通常加入的连接产物的体积少于感受态细胞体积的1/10。3.将菌液放入42℃水浴中热激90秒,迅速转移至冰浴中放置5分钟。4.加入500μL LB,于37℃恒温摇床上200rpm培养1小时。5.将菌液4000rpm离心3分钟,留200μL上清将菌体吹匀,均匀涂布于含适当抗生素的琼脂平板表面,平板于37℃恒温培养箱内倒置过夜。
II.6蛋白质的表达,纯化和荧光检测
1.将表达载体(例如以pRSETb为基础的丙酮酸光学探针表达载体)转化到JM109(DE3)细胞中,倒置培养过夜,从平板上挑取克隆到250ml锥形瓶中,置于37℃摇床,220rpm培养至OD=0.4-0.8,加入1/1000(v/v)的IPTG(1M),18℃诱导表达24-36小时。
2.诱导表达完成后,4000rpm,30分钟离心收菌,加入50mM的磷酸盐缓冲液重悬菌体沉淀,超声破碎至菌体澄清。9600rpm,4℃离心20分钟。
3.离心上清通过自装的镍柱亲和层析柱纯化获得蛋白,镍柱亲和层析后的蛋白再通过自装的脱盐柱获得溶解在20mM MOPS缓冲液(pH 7.4)或者磷酸盐缓冲液PBS中的蛋白。
4.纯化的蛋白经过SDS-PAGE鉴定后,使用测定缓冲液(100mM HEPES,100mM NaCl,pH 7.3)或者磷酸盐缓冲液PBS稀释探针成终浓度为5-10μM的蛋白溶液。用测定缓冲液(20mM MOPS,pH 7.4)或者磷酸盐缓冲液PBS将丙酮酸配制成终浓度为1M的储液。
5.取100μl 5μM的蛋白溶液,37℃温育5分钟,分别加入丙酮酸混匀后至终浓度为100mM,利用多功能荧光酶标仪测定蛋白在340nm下的光吸收。
6.取100μl 1μM的蛋白溶液,37℃温育5分钟,加入丙酮酸滴定,测定蛋白的485nm荧光激发后528nm发射的荧光强度。对样品的荧光激发、发射测定利用多功能荧光酶标仪完成。
7.取100μl 1μM的蛋白溶液,37℃温育5分钟,加入丙酮酸,测定蛋白的吸收光谱和荧光光谱。对样品的吸收光谱和荧光光谱的测定通过分光光度计和荧光分光光度计完成。
II.7哺乳动物细胞的转染和荧光检测
1.将pCDNA3.1+为基础的丙酮酸光学探针质粒通过转染试剂Lipofectamine2000(Invitrogen)转染到HeLa中,置于37℃,5%CO2的细胞培养箱中培养。待外源基因充分表达24~36h后进行荧光检测。
2.诱导表达完成后,将贴壁的HeLa细胞,用PBS冲洗三次,置于HBSS溶液中分别进行荧光显微镜和酶标仪检测。
实施例1:丙酮酸结合蛋白质粒
通过PCR扩增大肠杆菌基因中的PdhR(96-254)基因,PCR产物凝胶电泳后回收后用BamHI和HindIII酶切,同时对pCDFDuet1载体进行相应的双酶切。用T4DNA连接酶连接后,将产物转化MachI,转化的MachI涂布于LB平板(硫酸链霉素50ug/mL),置于37℃培养过夜。将生长MachI转化子进行质粒抽提后,进行PCR鉴定。阳性质粒经过测序正确后进行后续的质粒构建。
实施例2:不同插入位点的cpYFP光学探针的表达和检测
本实施例中,以pCDFDuet-PdhR(96-254)为基础根据丙酮酸结合蛋白晶体结构选择了下述位点插入cpYFP,得到相应pCDFDuet-PdhR(96-254)-cpYFP质粒:117/118,117/119,117/120,117/121,118/119,118/120,118/121,119/120,119/121,120/121,140/141,140/142,140/143,141/142,141/143,142/143,160/161,160/162,160/163,160/164,161/162,161/163,161/164,162/163,162/164,163/164,174/175,174/176,175/176,191/192,191/193,191/194,191/195,192/193,192/194,192/195,193/194,193/195,194/195,210/211,210/212,210/213,210/214,211/212,211/213,211/214,212/213,212/214或213/214。示例性的序列如表1所示。
表1,光学探针的序列
序列 | 插入位点 |
SEQ ID NO:6 | 117/121 |
SEQ ID NO:7 | 141/143 |
SEQ ID NO:8 | 191/192 |
SEQ ID NO:9 | 191/193 |
SEQ ID NO:10 | 191/194 |
SEQ ID NO:11 | 191/195 |
SEQ ID NO:12 | 192/193 |
SEQ ID NO:13 | 192/194 |
SEQ ID NO:14 | 192/195 |
SEQ ID NO:15 | 193/194 |
SEQ ID NO:16 | 193/195 |
SEQ ID NO:17 | 194/195 |
SEQ ID NO:18 | 210/214 |
利用PCR产生cpYFP的DNA片段,同时通过反向PCR扩增产生含有不同断裂位点的pCDFDuet-PdhR(96-254)线性化载体,将线性化的pCDFDuet-PdhR(96-254)和cpYFP片段在同源重组酶的作用下连接产生重组质粒,通过菌落PCR,选取阳性克隆,由上海杰李生物技术有限公司完成测序。
经过测序正确后,将重组质粒转化到JM109(DE3)中诱导表达,并纯化蛋白质,通过SDS-PAGE电泳大小在47.5Kda附近。该大小符合pCDFDuet-PdhR(96-254)-cpYFP表达出的含His-tag纯化标签的PdhR(96-254)-cpYFP融合蛋白质的大小。结果如图1所示。
将纯化的PdhR(96-254)-cpYFP融合蛋白质进行丙酮酸响应筛选,将含有100mM丙酮酸的融合荧光蛋白质的检测信号除以无丙酮酸的融合荧光蛋白质的检测信号。结果如图2所示,检测结果显示对丙酮酸响应超过2倍的光学探针有在117/121,141/143,191/192,191/193,191/194,191/195,192/193,192/194,192/195,193/194,193/195,194/195和210/214位点或者其家族蛋白的对应氨基酸位点实施插入的光学探针。
实施例3:不同插入位点的cpGFP光学探针的表达和检测
按照实施例2中的方法将cpYFP替换为cpGFP,构建丙酮酸绿色荧光蛋白荧光探针。如图3所示,检测结果显示对丙酮酸响应超过2倍的光学探针有在191/193位点或者其家族蛋白的对应氨基酸位点实施插入的光学探针。
实施例4:不同插入位点的cpBFP光学探针的表达和检测
按照实施例2中的方法将cpYFP替换为cpBFP,构建丙酮酸蓝色荧光蛋白荧光探针。如图4所示,检测结果显示对丙酮酸响应超过2倍的光学探针有在193/194和194/195位点或者其家族蛋白的对应氨基酸位点实施插入的光学探针。
实施例5:不同插入位点的cpmApple光学探针的表达和检测
按照实施例2中的方法将cpYFP替换为cpmApple,构建丙酮酸红色荧光蛋白荧光探针。如图5所示,检测结果显示对丙酮酸响应超过2倍的光学探针有在191/195和192/193位点或者其家族蛋白的对应氨基酸位点实施插入的光学探针。
综合实施例2-5的结果,表明通过简单地更换荧光蛋白cpYFP、cpGFP、cpBFP或者cpmApple以获得不同颜色的对丙酮酸响应的探针是行不通的。
实施例6:突变的cpYFP光学探针的表达和检测
在PdhR(96-254)-191/193-cpYFP、PdhR(96-254)-192/194-cpYFP和PdhR(96-254)-192/195-cpYFP的基础上构建光学探针突变体。通过反向PCR线性化质粒pCDFDuet-PdhR(96-254)-191/193-cpYFP引物中含有所要突变位点的碱基序列,对得到的PCR产物在PNK、T4 DNA连接酶和PEG4000的作用下加磷连接,得到Q138、R191、E193这3个位点的定点饱和突变质粒。采用相同的方法,我们得到pCDFDuet-PdhR(96-254)-192/194-cpYFP基础上M194位点的定点饱和突变质粒,以及pCDFDuet-PdhR(96-254)-192/195-cpYFP基础上的L195位的定点饱和突变质粒。并在PdhR(96-254)-192/194-M194V-cpYFP和PdhR(96-254)-141/143-cpYFP的基础上分别构建190、191、192三个位点的随机突变库。并由上海杰李生物技术有限公司完成测序。部分突变的光学探针的序列如表2所示。示例性的核酸序列如SEQID NO:31(192/194-M194V)所示。
表2,突变的光学探针的序列
序列 | 插入位点 | 突变 |
SEQ ID NO:19 | 191/193 | Q138突变为A,N,D,G,H,L,K,M,P,S或T |
SEQ ID NO:20 | 191/193 | R191突变为A,N,D,C,Q,E,G,H,I,L,K,M,F,P,S,T,W,Y或V |
SEQ ID NO:21 | 191/193 | E193突变为A,R,D,C,Q,I,L,K,M,F,P,S,T,Y或V |
SEQ ID NO:22 | 192/194 | M194突变为A,R,N,D,C,Q,E,G,L,K,F,P,S,T,W,Y或V) |
SEQ ID NO:23 | 192/195 | L195突变为D,H,I或Y |
SEQ ID NO:24 | 192/194 | M194V/S190E/R191N/R192D |
SEQ ID NO:25 | 192/194 | M194V/S190D/R191Y/R192T |
SEQ ID NO:26 | 141/143 | S190P/R191H/R192P |
SEQ ID NO:27 | 141/143 | S190R/R191S/R192P |
SEQ ID NO:28 | 141/143 | S190L/R191V |
SEQ ID NO:29 | 141/143 | S190T/R191Q/R192E |
SEQ ID NO:30 | 141/143 | R191S/R192T |
结果如图6所示,荧光检测结果显示Q138,R191,E193,M194和L195这5个位点饱和突变后的多个突变体对丙酮酸响应增强,表明这5个位点对丙酮酸的结合非常重要,此外,S190、R191和R192三个位点的随机突变结果表明这三个位点的有些突变体增强了对丙酮酸的响应,因此这三个位点对丙酮酸结合也很重要。
实施例7:丙酮酸光学探针的滴定曲线
对实施例2和实施例6中所得的部分丙酮酸光学探针,即141/143、191/193-E193Q、191/193-R191Y、191/193-R191F、191/193-R191L、192/194-M194V、191/193-Q138P、192/194-M194D、192/194-M194H、191/193-R191P、191/193-Q138L、192/194-M194W、191/193-E193L、192/194-M194V/S190E/R191N/R192D、192/195、141/143-S190P/R191H/R192P、141/143-S190R/R191S/R192P、141/143-S190L/R191V、141/143-S190T/R191Q/R192E、141/143-R191S/R192T、141/143-S190D/R191Y/R192T进行浓度梯度的丙酮酸检测,检测420nm激发528nm发射处荧光强度和485nm激发528nm发射处荧光强度比值的变化。141/143、191/193-E193Q、191/193-R191Y、191/193-R191F、191/193-R191L、192/194-M194V、191/193-Q138P、192/194-M194D、192/194-M194H、191/193-R191P、191/193-Q138L、192/194-M194W、191/193-E193L、192/194-M194V-S190E/R191N/R192D、192/195的Kd(结合常数)分别为28μM、195μM、222μM、422μM、463μM、475μM、599μM、664μM、728μM、799μM、1253μM、5142μM、9255μM、1066μM、19944μM、84μM、158μM、185μM、186μM、164μM和134μM,变化幅度分别为2.0倍、4.1倍、4.3倍、5.3倍、5.0倍、9.7倍、6.4倍、5.3倍、6.1倍、6.5倍、5.1倍、7.2倍、3.4倍、13.1倍、8.3倍、3.2倍、3.1倍、4.2倍、2.7倍、3.9倍和6.4倍,结果如图7A-B所示。
实施例8:丙酮酸光学探针的光谱性能和特异性
示例性地,将纯化的丙酮酸光学探针PdhR(96-254)-192/194-M194V-cpYFP分别进行0mM和10mM丙酮酸处理10分钟后,使用荧光分光光度计进行荧光谱的检测。
对激发光谱的测定:以350nm至500nm的激发范围和530nm的发射波长记录激发光谱,每5nm读取一次。结果显示,探针在约420和490nm处有两个激发峰,如图8A所示。
对发射光谱的测定:固定激发波长分别为420nm和490nm,记录505-600nm的发射光谱,每5nm读取一次。结果显示,探针在添加10mM丙酮酸后,在420nm激发下荧光强度降低为添加0mM丙酮酸的0.6倍;在490nm激发下荧光强度增强为添加0mM丙酮酸的5.8倍。如图8B和8C所示。
对纯化的丙酮酸光学探针PdhR(96-254)-141/143-cpYFP、PdhR(96-254)-192/194-M194V/S190D/R191Y/R192T-cpYFP、PdhR(96-254)-192/194-M194V-cpYFP和PdhR(96-254)-192/194-M194V/S190E/R191N/R192D-cpYFP测定其特异性,结果表明探针具有很好的特异性,如图9所示。
实施例9:光学探针的亚细胞器定位本实施例中,使用不同的定位信号肽与光学探针融合,将光学探针定位到不同的细胞器中。
用融合不同定位信号肽的光学探针质粒转染HeLa细胞36小时后,使用PBS冲洗,置于HBSS溶液中使用倒置荧光显微镜在FITC通道下进行荧光检测。结果如图10所示。丙酮酸光学探针通过与不同的特异定位信号肽融合能够定位到包括细胞浆、细胞外膜、细胞核、内质网、线粒体、核排阻等亚细胞器中。不同的亚细胞结构中都显示有荧光,并且荧光的分布和强度各不相同。
实施例10:丙酮酸探针在细胞内的性能研究
选择蛋白上ratio485/420大于2倍的样品,用胞浆表达的光学探针质粒转染HeLa细胞36小时后,使用PBS冲洗,置于HBSS溶液中,然后添加10mM丙酮酸,检测30min后420nm激发528nm发射处荧光强度和485nm激发528nm发射处荧光强度比值的变化。结果如图11所示,外源加入丙酮酸会引起HeLa细胞胞浆中探针的快速响应。
实施例11:在活细胞中基于光学探针进行高通量化合物筛选
本实施例中,我们使用胞浆表达丙酮酸探针PdhR(96-254)-192/194-M194V-cpYFP的HeLa细胞进行高通量化合物筛选。
经转染的HeLa细胞使用PBS冲洗,置于HBSS溶液中(无丙酮酸)处理1小时,然后使用10μM的化合物处理1小时。各样品中分别滴加丙酮酸。使用酶标仪记录420nm激发528nm发射处荧光强度和485nm激发528nm发射处荧光强度比值变化。以未用任何化合物处理的样品作为对照进行标准化。结果如图12所示。在使用的2000种化合物中,绝大部分的化合物对丙酮酸进入细胞影响极小。有5种化合物能够提高细胞对丙酮酸的摄取能力,另外有8种化合物能够明显降低细胞对丙酮酸的摄取。
实施例12:光学探针定量检测血液中的丙酮酸
在本实施例中,我们使用纯化的丙酮酸探针PdhR(96-254)-141/143-cpYFP对小鼠和人的血液上清中的丙酮酸进行分析。
将丙酮酸探针PdhR(96-254)-141/143-cpYFP与稀释的血液上清混合处理10分钟后,使用酶标仪检测420nm激发528nm发射处荧光强度和485nm激发528nm发射处荧光强度比值。结果如图13所示,小鼠血液中的丙酮酸含量在270μM左右,人血液中的丙酮酸含量在130μM左右。
由以上实施例可知,本发明提供的丙酮酸光学探针,蛋白分子量相对较小且易于成熟,荧光动态变化大,特异性好,并且能够通过基因操作的方法在细胞中表达,可在细胞内外实时定位、定量检测丙酮酸;并且能够进行高通量的化合物筛选。
其它实施方式
本说明书描述了许多实施方式。然而应理解,本领域技术人员通过阅读本说明书获知的不背离本发明的构思和范围的各种改进,也应包括在所附权利要求书的范围内。
序列表
<110> 华东理工大学
<120> 丙酮酸光学探针及其制备方法和应用
<130> 197279
<141> 2020-02-17
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Leu Ala Asp His Tyr Gln Gln Asn Thr Pro Ile Gly Asp Gly Pro Val
85 90 95
Leu Leu Pro Asp Asn His Tyr Leu Ser Phe Gln Ser Val Leu Ser Lys
100 105 110
Asp Pro Asn Glu Lys Arg Asp His Met Val Leu Leu Glu Phe Val Thr
115 120 125
Ala Ala Gly Ile Thr Leu Gly Met Asp Glu Leu Tyr Asn Val Asp Gly
130 135 140
Gly Ser Gly Gly Thr Gly Ser Lys Gly Glu Glu Leu Phe Thr Gly Val
145 150 155 160
Val Pro Ile Leu Val Glu Leu Asp Gly Asp Val Asn Gly His Lys Phe
165 170 175
Ser Val Ser Gly Glu Gly Glu Gly Asp Ala Thr Tyr Gly Lys Leu Thr
180 185 190
Leu Lys Leu Ile Cys Thr Thr Gly Lys Leu Pro Val Pro Trp Pro Thr
195 200 205
Leu Val Thr Thr Leu Gly Tyr Gly Leu Lys Cys Phe Ala Arg Tyr Pro
210 215 220
Asp His Met Lys Gln His Asp Phe Phe Lys Ser Ala Met Pro Glu Gly
225 230 235 240
Tyr Val Gln Glu Arg Thr Ile Phe Phe Lys Asp Asp Gly Asn Tyr Lys
245 250 255
Thr Arg Ala Glu Val Lys Phe Glu Gly Asp Thr Leu Val Asn Arg Ile
260 265 270
Glu Leu Lys Gly Ile Asp Phe Lys Glu Asp Gly Asn Ile Leu Gly His
275 280 285
Lys Leu Glu Tyr Asn Leu Asp Ala Glu Ser Asn Ala Val Leu Gln Tyr
290 295 300
Gln Ile Ala Val Thr Glu Ala Ala His Asn Val Val Leu Leu His Leu
305 310 315 320
Leu Arg Cys Met Glu Pro Met Leu Ala Gln Asn Val Arg Gln Asn Phe
325 330 335
Glu Leu Leu Tyr Ser Arg Arg Glu Met Leu Pro Leu Val Ser Ser His
340 345 350
Arg Thr Arg Ile Phe Glu Ala Ile Met Ala Gly Lys Pro Glu Glu Ala
355 360 365
Arg Glu Ala Ser His Arg His Leu Ala Phe Ile Glu Glu Ile Leu Leu
370 375 380
Asp Arg Ser Arg Glu Glu Ser Arg Arg Glu Arg Ser Leu Arg Arg Leu
385 390 395 400
Glu Gln Arg Lys Asn
405
<210> 8
<211> 406
<212> PRT
<213> Artificial Sequence
<400> 8
Met Ser Gln Tyr Asp Leu Leu Glu Thr Arg His Ala Leu Glu Gly Ile
1 5 10 15
Ala Ala Tyr Tyr Ala Ala Leu Arg Ser Thr Asp Glu Asp Lys Glu Arg
20 25 30
Ile Arg Glu Leu His His Ala Ile Glu Leu Ala Gln Gln Ser Gly Asp
35 40 45
Leu Asp Ala Glu Ser Asn Ala Val Leu Gln Tyr Gln Ile Ala Val Thr
50 55 60
Glu Ala Ala His Asn Val Val Leu Leu His Leu Leu Arg Cys Met Glu
65 70 75 80
Pro Met Leu Ala Gln Asn Val Arg Gln Asn Phe Glu Leu Leu Tyr Ser
85 90 95
Arg Tyr Asn Ser Asp Asn Val Tyr Ile Met Ala Asp Lys Gln Lys Asn
100 105 110
Gly Ile Lys Ala Asn Phe Lys Ile Arg His Asn Val Glu Asp Gly Ser
115 120 125
Val Gln Leu Ala Asp His Tyr Gln Gln Asn Thr Pro Ile Gly Asp Gly
130 135 140
Pro Val Leu Leu Pro Asp Asn His Tyr Leu Ser Phe Gln Ser Val Leu
145 150 155 160
Ser Lys Asp Pro Asn Glu Lys Arg Asp His Met Val Leu Leu Glu Phe
165 170 175
Val Thr Ala Ala Gly Ile Thr Leu Gly Met Asp Glu Leu Tyr Asn Val
180 185 190
Asp Gly Gly Ser Gly Gly Thr Gly Ser Lys Gly Glu Glu Leu Phe Thr
195 200 205
Gly Val Val Pro Ile Leu Val Glu Leu Asp Gly Asp Val Asn Gly His
210 215 220
Lys Phe Ser Val Ser Gly Glu Gly Glu Gly Asp Ala Thr Tyr Gly Lys
225 230 235 240
Leu Thr Leu Lys Leu Ile Cys Thr Thr Gly Lys Leu Pro Val Pro Trp
245 250 255
Pro Thr Leu Val Thr Thr Leu Gly Tyr Gly Leu Lys Cys Phe Ala Arg
260 265 270
Tyr Pro Asp His Met Lys Gln His Asp Phe Phe Lys Ser Ala Met Pro
275 280 285
Glu Gly Tyr Val Gln Glu Arg Thr Ile Phe Phe Lys Asp Asp Gly Asn
290 295 300
Tyr Lys Thr Arg Ala Glu Val Lys Phe Glu Gly Asp Thr Leu Val Asn
305 310 315 320
Arg Ile Glu Leu Lys Gly Ile Asp Phe Lys Glu Asp Gly Asn Ile Leu
325 330 335
Gly His Lys Leu Glu Tyr Asn Arg Glu Met Leu Pro Leu Val Ser Ser
340 345 350
His Arg Thr Arg Ile Phe Glu Ala Ile Met Ala Gly Lys Pro Glu Glu
355 360 365
Ala Arg Glu Ala Ser His Arg His Leu Ala Phe Ile Glu Glu Ile Leu
370 375 380
Leu Asp Arg Ser Arg Glu Glu Ser Arg Arg Glu Arg Ser Leu Arg Arg
385 390 395 400
Leu Glu Gln Arg Lys Asn
405
<210> 9
<211> 405
<212> PRT
<213> Artificial Sequence
<400> 9
Met Ser Gln Tyr Asp Leu Leu Glu Thr Arg His Ala Leu Glu Gly Ile
1 5 10 15
Ala Ala Tyr Tyr Ala Ala Leu Arg Ser Thr Asp Glu Asp Lys Glu Arg
20 25 30
Ile Arg Glu Leu His His Ala Ile Glu Leu Ala Gln Gln Ser Gly Asp
35 40 45
Leu Asp Ala Glu Ser Asn Ala Val Leu Gln Tyr Gln Ile Ala Val Thr
50 55 60
Glu Ala Ala His Asn Val Val Leu Leu His Leu Leu Arg Cys Met Glu
65 70 75 80
Pro Met Leu Ala Gln Asn Val Arg Gln Asn Phe Glu Leu Leu Tyr Ser
85 90 95
Arg Tyr Asn Ser Asp Asn Val Tyr Ile Met Ala Asp Lys Gln Lys Asn
100 105 110
Gly Ile Lys Ala Asn Phe Lys Ile Arg His Asn Val Glu Asp Gly Ser
115 120 125
Val Gln Leu Ala Asp His Tyr Gln Gln Asn Thr Pro Ile Gly Asp Gly
130 135 140
Pro Val Leu Leu Pro Asp Asn His Tyr Leu Ser Phe Gln Ser Val Leu
145 150 155 160
Ser Lys Asp Pro Asn Glu Lys Arg Asp His Met Val Leu Leu Glu Phe
165 170 175
Val Thr Ala Ala Gly Ile Thr Leu Gly Met Asp Glu Leu Tyr Asn Val
180 185 190
Asp Gly Gly Ser Gly Gly Thr Gly Ser Lys Gly Glu Glu Leu Phe Thr
195 200 205
Gly Val Val Pro Ile Leu Val Glu Leu Asp Gly Asp Val Asn Gly His
210 215 220
Lys Phe Ser Val Ser Gly Glu Gly Glu Gly Asp Ala Thr Tyr Gly Lys
225 230 235 240
Leu Thr Leu Lys Leu Ile Cys Thr Thr Gly Lys Leu Pro Val Pro Trp
245 250 255
Pro Thr Leu Val Thr Thr Leu Gly Tyr Gly Leu Lys Cys Phe Ala Arg
260 265 270
Tyr Pro Asp His Met Lys Gln His Asp Phe Phe Lys Ser Ala Met Pro
275 280 285
Glu Gly Tyr Val Gln Glu Arg Thr Ile Phe Phe Lys Asp Asp Gly Asn
290 295 300
Tyr Lys Thr Arg Ala Glu Val Lys Phe Glu Gly Asp Thr Leu Val Asn
305 310 315 320
Arg Ile Glu Leu Lys Gly Ile Asp Phe Lys Glu Asp Gly Asn Ile Leu
325 330 335
Gly His Lys Leu Glu Tyr Asn Glu Met Leu Pro Leu Val Ser Ser His
340 345 350
Arg Thr Arg Ile Phe Glu Ala Ile Met Ala Gly Lys Pro Glu Glu Ala
355 360 365
Arg Glu Ala Ser His Arg His Leu Ala Phe Ile Glu Glu Ile Leu Leu
370 375 380
Asp Arg Ser Arg Glu Glu Ser Arg Arg Glu Arg Ser Leu Arg Arg Leu
385 390 395 400
Glu Gln Arg Lys Asn
405
<210> 10
<211> 404
<212> PRT
<213> Artificial Sequence
<400> 10
Met Ser Gln Tyr Asp Leu Leu Glu Thr Arg His Ala Leu Glu Gly Ile
1 5 10 15
Ala Ala Tyr Tyr Ala Ala Leu Arg Ser Thr Asp Glu Asp Lys Glu Arg
20 25 30
Ile Arg Glu Leu His His Ala Ile Glu Leu Ala Gln Gln Ser Gly Asp
35 40 45
Leu Asp Ala Glu Ser Asn Ala Val Leu Gln Tyr Gln Ile Ala Val Thr
50 55 60
Glu Ala Ala His Asn Val Val Leu Leu His Leu Leu Arg Cys Met Glu
65 70 75 80
Pro Met Leu Ala Gln Asn Val Arg Gln Asn Phe Glu Leu Leu Tyr Ser
85 90 95
Arg Tyr Asn Ser Asp Asn Val Tyr Ile Met Ala Asp Lys Gln Lys Asn
100 105 110
Gly Ile Lys Ala Asn Phe Lys Ile Arg His Asn Val Glu Asp Gly Ser
115 120 125
Val Gln Leu Ala Asp His Tyr Gln Gln Asn Thr Pro Ile Gly Asp Gly
130 135 140
Pro Val Leu Leu Pro Asp Asn His Tyr Leu Ser Phe Gln Ser Val Leu
145 150 155 160
Ser Lys Asp Pro Asn Glu Lys Arg Asp His Met Val Leu Leu Glu Phe
165 170 175
Val Thr Ala Ala Gly Ile Thr Leu Gly Met Asp Glu Leu Tyr Asn Val
180 185 190
Asp Gly Gly Ser Gly Gly Thr Gly Ser Lys Gly Glu Glu Leu Phe Thr
195 200 205
Gly Val Val Pro Ile Leu Val Glu Leu Asp Gly Asp Val Asn Gly His
210 215 220
Lys Phe Ser Val Ser Gly Glu Gly Glu Gly Asp Ala Thr Tyr Gly Lys
225 230 235 240
Leu Thr Leu Lys Leu Ile Cys Thr Thr Gly Lys Leu Pro Val Pro Trp
245 250 255
Pro Thr Leu Val Thr Thr Leu Gly Tyr Gly Leu Lys Cys Phe Ala Arg
260 265 270
Tyr Pro Asp His Met Lys Gln His Asp Phe Phe Lys Ser Ala Met Pro
275 280 285
Glu Gly Tyr Val Gln Glu Arg Thr Ile Phe Phe Lys Asp Asp Gly Asn
290 295 300
Tyr Lys Thr Arg Ala Glu Val Lys Phe Glu Gly Asp Thr Leu Val Asn
305 310 315 320
Arg Ile Glu Leu Lys Gly Ile Asp Phe Lys Glu Asp Gly Asn Ile Leu
325 330 335
Gly His Lys Leu Glu Tyr Asn Met Leu Pro Leu Val Ser Ser His Arg
340 345 350
Thr Arg Ile Phe Glu Ala Ile Met Ala Gly Lys Pro Glu Glu Ala Arg
355 360 365
Glu Ala Ser His Arg His Leu Ala Phe Ile Glu Glu Ile Leu Leu Asp
370 375 380
Arg Ser Arg Glu Glu Ser Arg Arg Glu Arg Ser Leu Arg Arg Leu Glu
385 390 395 400
Gln Arg Lys Asn
<210> 11
<211> 403
<212> PRT
<213> Artificial Sequence
<400> 11
Met Ser Gln Tyr Asp Leu Leu Glu Thr Arg His Ala Leu Glu Gly Ile
1 5 10 15
Ala Ala Tyr Tyr Ala Ala Leu Arg Ser Thr Asp Glu Asp Lys Glu Arg
20 25 30
Ile Arg Glu Leu His His Ala Ile Glu Leu Ala Gln Gln Ser Gly Asp
35 40 45
Leu Asp Ala Glu Ser Asn Ala Val Leu Gln Tyr Gln Ile Ala Val Thr
50 55 60
Glu Ala Ala His Asn Val Val Leu Leu His Leu Leu Arg Cys Met Glu
65 70 75 80
Pro Met Leu Ala Gln Asn Val Arg Gln Asn Phe Glu Leu Leu Tyr Ser
85 90 95
Arg Tyr Asn Ser Asp Asn Val Tyr Ile Met Ala Asp Lys Gln Lys Asn
100 105 110
Gly Ile Lys Ala Asn Phe Lys Ile Arg His Asn Val Glu Asp Gly Ser
115 120 125
Val Gln Leu Ala Asp His Tyr Gln Gln Asn Thr Pro Ile Gly Asp Gly
130 135 140
Pro Val Leu Leu Pro Asp Asn His Tyr Leu Ser Phe Gln Ser Val Leu
145 150 155 160
Ser Lys Asp Pro Asn Glu Lys Arg Asp His Met Val Leu Leu Glu Phe
165 170 175
Val Thr Ala Ala Gly Ile Thr Leu Gly Met Asp Glu Leu Tyr Asn Val
180 185 190
Asp Gly Gly Ser Gly Gly Thr Gly Ser Lys Gly Glu Glu Leu Phe Thr
195 200 205
Gly Val Val Pro Ile Leu Val Glu Leu Asp Gly Asp Val Asn Gly His
210 215 220
Lys Phe Ser Val Ser Gly Glu Gly Glu Gly Asp Ala Thr Tyr Gly Lys
225 230 235 240
Leu Thr Leu Lys Leu Ile Cys Thr Thr Gly Lys Leu Pro Val Pro Trp
245 250 255
Pro Thr Leu Val Thr Thr Leu Gly Tyr Gly Leu Lys Cys Phe Ala Arg
260 265 270
Tyr Pro Asp His Met Lys Gln His Asp Phe Phe Lys Ser Ala Met Pro
275 280 285
Glu Gly Tyr Val Gln Glu Arg Thr Ile Phe Phe Lys Asp Asp Gly Asn
290 295 300
Tyr Lys Thr Arg Ala Glu Val Lys Phe Glu Gly Asp Thr Leu Val Asn
305 310 315 320
Arg Ile Glu Leu Lys Gly Ile Asp Phe Lys Glu Asp Gly Asn Ile Leu
325 330 335
Gly His Lys Leu Glu Tyr Asn Leu Pro Leu Val Ser Ser His Arg Thr
340 345 350
Arg Ile Phe Glu Ala Ile Met Ala Gly Lys Pro Glu Glu Ala Arg Glu
355 360 365
Ala Ser His Arg His Leu Ala Phe Ile Glu Glu Ile Leu Leu Asp Arg
370 375 380
Ser Arg Glu Glu Ser Arg Arg Glu Arg Ser Leu Arg Arg Leu Glu Gln
385 390 395 400
Arg Lys Asn
<210> 12
<211> 406
<212> PRT
<213> Artificial Sequence
<400> 12
Met Ser Gln Tyr Asp Leu Leu Glu Thr Arg His Ala Leu Glu Gly Ile
1 5 10 15
Ala Ala Tyr Tyr Ala Ala Leu Arg Ser Thr Asp Glu Asp Lys Glu Arg
20 25 30
Ile Arg Glu Leu His His Ala Ile Glu Leu Ala Gln Gln Ser Gly Asp
35 40 45
Leu Asp Ala Glu Ser Asn Ala Val Leu Gln Tyr Gln Ile Ala Val Thr
50 55 60
Glu Ala Ala His Asn Val Val Leu Leu His Leu Leu Arg Cys Met Glu
65 70 75 80
Pro Met Leu Ala Gln Asn Val Arg Gln Asn Phe Glu Leu Leu Tyr Ser
85 90 95
Arg Arg Tyr Asn Ser Asp Asn Val Tyr Ile Met Ala Asp Lys Gln Lys
100 105 110
Asn Gly Ile Lys Ala Asn Phe Lys Ile Arg His Asn Val Glu Asp Gly
115 120 125
Ser Val Gln Leu Ala Asp His Tyr Gln Gln Asn Thr Pro Ile Gly Asp
130 135 140
Gly Pro Val Leu Leu Pro Asp Asn His Tyr Leu Ser Phe Gln Ser Val
145 150 155 160
Leu Ser Lys Asp Pro Asn Glu Lys Arg Asp His Met Val Leu Leu Glu
165 170 175
Phe Val Thr Ala Ala Gly Ile Thr Leu Gly Met Asp Glu Leu Tyr Asn
180 185 190
Val Asp Gly Gly Ser Gly Gly Thr Gly Ser Lys Gly Glu Glu Leu Phe
195 200 205
Thr Gly Val Val Pro Ile Leu Val Glu Leu Asp Gly Asp Val Asn Gly
210 215 220
His Lys Phe Ser Val Ser Gly Glu Gly Glu Gly Asp Ala Thr Tyr Gly
225 230 235 240
Lys Leu Thr Leu Lys Leu Ile Cys Thr Thr Gly Lys Leu Pro Val Pro
245 250 255
Trp Pro Thr Leu Val Thr Thr Leu Gly Tyr Gly Leu Lys Cys Phe Ala
260 265 270
Arg Tyr Pro Asp His Met Lys Gln His Asp Phe Phe Lys Ser Ala Met
275 280 285
Pro Glu Gly Tyr Val Gln Glu Arg Thr Ile Phe Phe Lys Asp Asp Gly
290 295 300
Asn Tyr Lys Thr Arg Ala Glu Val Lys Phe Glu Gly Asp Thr Leu Val
305 310 315 320
Asn Arg Ile Glu Leu Lys Gly Ile Asp Phe Lys Glu Asp Gly Asn Ile
325 330 335
Leu Gly His Lys Leu Glu Tyr Asn Glu Met Leu Pro Leu Val Ser Ser
340 345 350
His Arg Thr Arg Ile Phe Glu Ala Ile Met Ala Gly Lys Pro Glu Glu
355 360 365
Ala Arg Glu Ala Ser His Arg His Leu Ala Phe Ile Glu Glu Ile Leu
370 375 380
Leu Asp Arg Ser Arg Glu Glu Ser Arg Arg Glu Arg Ser Leu Arg Arg
385 390 395 400
Leu Glu Gln Arg Lys Asn
405
<210> 13
<211> 405
<212> PRT
<213> Artificial Sequence
<400> 13
Met Ser Gln Tyr Asp Leu Leu Glu Thr Arg His Ala Leu Glu Gly Ile
1 5 10 15
Ala Ala Tyr Tyr Ala Ala Leu Arg Ser Thr Asp Glu Asp Lys Glu Arg
20 25 30
Ile Arg Glu Leu His His Ala Ile Glu Leu Ala Gln Gln Ser Gly Asp
35 40 45
Leu Asp Ala Glu Ser Asn Ala Val Leu Gln Tyr Gln Ile Ala Val Thr
50 55 60
Glu Ala Ala His Asn Val Val Leu Leu His Leu Leu Arg Cys Met Glu
65 70 75 80
Pro Met Leu Ala Gln Asn Val Arg Gln Asn Phe Glu Leu Leu Tyr Ser
85 90 95
Arg Arg Tyr Asn Ser Asp Asn Val Tyr Ile Met Ala Asp Lys Gln Lys
100 105 110
Asn Gly Ile Lys Ala Asn Phe Lys Ile Arg His Asn Val Glu Asp Gly
115 120 125
Ser Val Gln Leu Ala Asp His Tyr Gln Gln Asn Thr Pro Ile Gly Asp
130 135 140
Gly Pro Val Leu Leu Pro Asp Asn His Tyr Leu Ser Phe Gln Ser Val
145 150 155 160
Leu Ser Lys Asp Pro Asn Glu Lys Arg Asp His Met Val Leu Leu Glu
165 170 175
Phe Val Thr Ala Ala Gly Ile Thr Leu Gly Met Asp Glu Leu Tyr Asn
180 185 190
Val Asp Gly Gly Ser Gly Gly Thr Gly Ser Lys Gly Glu Glu Leu Phe
195 200 205
Thr Gly Val Val Pro Ile Leu Val Glu Leu Asp Gly Asp Val Asn Gly
210 215 220
His Lys Phe Ser Val Ser Gly Glu Gly Glu Gly Asp Ala Thr Tyr Gly
225 230 235 240
Lys Leu Thr Leu Lys Leu Ile Cys Thr Thr Gly Lys Leu Pro Val Pro
245 250 255
Trp Pro Thr Leu Val Thr Thr Leu Gly Tyr Gly Leu Lys Cys Phe Ala
260 265 270
Arg Tyr Pro Asp His Met Lys Gln His Asp Phe Phe Lys Ser Ala Met
275 280 285
Pro Glu Gly Tyr Val Gln Glu Arg Thr Ile Phe Phe Lys Asp Asp Gly
290 295 300
Asn Tyr Lys Thr Arg Ala Glu Val Lys Phe Glu Gly Asp Thr Leu Val
305 310 315 320
Asn Arg Ile Glu Leu Lys Gly Ile Asp Phe Lys Glu Asp Gly Asn Ile
325 330 335
Leu Gly His Lys Leu Glu Tyr Asn Met Leu Pro Leu Val Ser Ser His
340 345 350
Arg Thr Arg Ile Phe Glu Ala Ile Met Ala Gly Lys Pro Glu Glu Ala
355 360 365
Arg Glu Ala Ser His Arg His Leu Ala Phe Ile Glu Glu Ile Leu Leu
370 375 380
Asp Arg Ser Arg Glu Glu Ser Arg Arg Glu Arg Ser Leu Arg Arg Leu
385 390 395 400
Glu Gln Arg Lys Asn
405
<210> 14
<211> 404
<212> PRT
<213> Artificial Sequence
<400> 14
Met Ser Gln Tyr Asp Leu Leu Glu Thr Arg His Ala Leu Glu Gly Ile
1 5 10 15
Ala Ala Tyr Tyr Ala Ala Leu Arg Ser Thr Asp Glu Asp Lys Glu Arg
20 25 30
Ile Arg Glu Leu His His Ala Ile Glu Leu Ala Gln Gln Ser Gly Asp
35 40 45
Leu Asp Ala Glu Ser Asn Ala Val Leu Gln Tyr Gln Ile Ala Val Thr
50 55 60
Glu Ala Ala His Asn Val Val Leu Leu His Leu Leu Arg Cys Met Glu
65 70 75 80
Pro Met Leu Ala Gln Asn Val Arg Gln Asn Phe Glu Leu Leu Tyr Ser
85 90 95
Arg Arg Tyr Asn Ser Asp Asn Val Tyr Ile Met Ala Asp Lys Gln Lys
100 105 110
Asn Gly Ile Lys Ala Asn Phe Lys Ile Arg His Asn Val Glu Asp Gly
115 120 125
Ser Val Gln Leu Ala Asp His Tyr Gln Gln Asn Thr Pro Ile Gly Asp
130 135 140
Gly Pro Val Leu Leu Pro Asp Asn His Tyr Leu Ser Phe Gln Ser Val
145 150 155 160
Leu Ser Lys Asp Pro Asn Glu Lys Arg Asp His Met Val Leu Leu Glu
165 170 175
Phe Val Thr Ala Ala Gly Ile Thr Leu Gly Met Asp Glu Leu Tyr Asn
180 185 190
Val Asp Gly Gly Ser Gly Gly Thr Gly Ser Lys Gly Glu Glu Leu Phe
195 200 205
Thr Gly Val Val Pro Ile Leu Val Glu Leu Asp Gly Asp Val Asn Gly
210 215 220
His Lys Phe Ser Val Ser Gly Glu Gly Glu Gly Asp Ala Thr Tyr Gly
225 230 235 240
Lys Leu Thr Leu Lys Leu Ile Cys Thr Thr Gly Lys Leu Pro Val Pro
245 250 255
Trp Pro Thr Leu Val Thr Thr Leu Gly Tyr Gly Leu Lys Cys Phe Ala
260 265 270
Arg Tyr Pro Asp His Met Lys Gln His Asp Phe Phe Lys Ser Ala Met
275 280 285
Pro Glu Gly Tyr Val Gln Glu Arg Thr Ile Phe Phe Lys Asp Asp Gly
290 295 300
Asn Tyr Lys Thr Arg Ala Glu Val Lys Phe Glu Gly Asp Thr Leu Val
305 310 315 320
Asn Arg Ile Glu Leu Lys Gly Ile Asp Phe Lys Glu Asp Gly Asn Ile
325 330 335
Leu Gly His Lys Leu Glu Tyr Asn Leu Pro Leu Val Ser Ser His Arg
340 345 350
Thr Arg Ile Phe Glu Ala Ile Met Ala Gly Lys Pro Glu Glu Ala Arg
355 360 365
Glu Ala Ser His Arg His Leu Ala Phe Ile Glu Glu Ile Leu Leu Asp
370 375 380
Arg Ser Arg Glu Glu Ser Arg Arg Glu Arg Ser Leu Arg Arg Leu Glu
385 390 395 400
Gln Arg Lys Asn
<210> 15
<211> 406
<212> PRT
<213> Artificial Sequence
<400> 15
Met Ser Gln Tyr Asp Leu Leu Glu Thr Arg His Ala Leu Glu Gly Ile
1 5 10 15
Ala Ala Tyr Tyr Ala Ala Leu Arg Ser Thr Asp Glu Asp Lys Glu Arg
20 25 30
Ile Arg Glu Leu His His Ala Ile Glu Leu Ala Gln Gln Ser Gly Asp
35 40 45
Leu Asp Ala Glu Ser Asn Ala Val Leu Gln Tyr Gln Ile Ala Val Thr
50 55 60
Glu Ala Ala His Asn Val Val Leu Leu His Leu Leu Arg Cys Met Glu
65 70 75 80
Pro Met Leu Ala Gln Asn Val Arg Gln Asn Phe Glu Leu Leu Tyr Ser
85 90 95
Arg Arg Glu Tyr Asn Ser Asp Asn Val Tyr Ile Met Ala Asp Lys Gln
100 105 110
Lys Asn Gly Ile Lys Ala Asn Phe Lys Ile Arg His Asn Val Glu Asp
115 120 125
Gly Ser Val Gln Leu Ala Asp His Tyr Gln Gln Asn Thr Pro Ile Gly
130 135 140
Asp Gly Pro Val Leu Leu Pro Asp Asn His Tyr Leu Ser Phe Gln Ser
145 150 155 160
Val Leu Ser Lys Asp Pro Asn Glu Lys Arg Asp His Met Val Leu Leu
165 170 175
Glu Phe Val Thr Ala Ala Gly Ile Thr Leu Gly Met Asp Glu Leu Tyr
180 185 190
Asn Val Asp Gly Gly Ser Gly Gly Thr Gly Ser Lys Gly Glu Glu Leu
195 200 205
Phe Thr Gly Val Val Pro Ile Leu Val Glu Leu Asp Gly Asp Val Asn
210 215 220
Gly His Lys Phe Ser Val Ser Gly Glu Gly Glu Gly Asp Ala Thr Tyr
225 230 235 240
Gly Lys Leu Thr Leu Lys Leu Ile Cys Thr Thr Gly Lys Leu Pro Val
245 250 255
Pro Trp Pro Thr Leu Val Thr Thr Leu Gly Tyr Gly Leu Lys Cys Phe
260 265 270
Ala Arg Tyr Pro Asp His Met Lys Gln His Asp Phe Phe Lys Ser Ala
275 280 285
Met Pro Glu Gly Tyr Val Gln Glu Arg Thr Ile Phe Phe Lys Asp Asp
290 295 300
Gly Asn Tyr Lys Thr Arg Ala Glu Val Lys Phe Glu Gly Asp Thr Leu
305 310 315 320
Val Asn Arg Ile Glu Leu Lys Gly Ile Asp Phe Lys Glu Asp Gly Asn
325 330 335
Ile Leu Gly His Lys Leu Glu Tyr Asn Met Leu Pro Leu Val Ser Ser
340 345 350
His Arg Thr Arg Ile Phe Glu Ala Ile Met Ala Gly Lys Pro Glu Glu
355 360 365
Ala Arg Glu Ala Ser His Arg His Leu Ala Phe Ile Glu Glu Ile Leu
370 375 380
Leu Asp Arg Ser Arg Glu Glu Ser Arg Arg Glu Arg Ser Leu Arg Arg
385 390 395 400
Leu Glu Gln Arg Lys Asn
405
<210> 16
<211> 405
<212> PRT
<213> Artificial Sequence
<400> 16
Met Ser Gln Tyr Asp Leu Leu Glu Thr Arg His Ala Leu Glu Gly Ile
1 5 10 15
Ala Ala Tyr Tyr Ala Ala Leu Arg Ser Thr Asp Glu Asp Lys Glu Arg
20 25 30
Ile Arg Glu Leu His His Ala Ile Glu Leu Ala Gln Gln Ser Gly Asp
35 40 45
Leu Asp Ala Glu Ser Asn Ala Val Leu Gln Tyr Gln Ile Ala Val Thr
50 55 60
Glu Ala Ala His Asn Val Val Leu Leu His Leu Leu Arg Cys Met Glu
65 70 75 80
Pro Met Leu Ala Gln Asn Val Arg Gln Asn Phe Glu Leu Leu Tyr Ser
85 90 95
Arg Arg Glu Tyr Asn Ser Asp Asn Val Tyr Ile Met Ala Asp Lys Gln
100 105 110
Lys Asn Gly Ile Lys Ala Asn Phe Lys Ile Arg His Asn Val Glu Asp
115 120 125
Gly Ser Val Gln Leu Ala Asp His Tyr Gln Gln Asn Thr Pro Ile Gly
130 135 140
Asp Gly Pro Val Leu Leu Pro Asp Asn His Tyr Leu Ser Phe Gln Ser
145 150 155 160
Val Leu Ser Lys Asp Pro Asn Glu Lys Arg Asp His Met Val Leu Leu
165 170 175
Glu Phe Val Thr Ala Ala Gly Ile Thr Leu Gly Met Asp Glu Leu Tyr
180 185 190
Asn Val Asp Gly Gly Ser Gly Gly Thr Gly Ser Lys Gly Glu Glu Leu
195 200 205
Phe Thr Gly Val Val Pro Ile Leu Val Glu Leu Asp Gly Asp Val Asn
210 215 220
Gly His Lys Phe Ser Val Ser Gly Glu Gly Glu Gly Asp Ala Thr Tyr
225 230 235 240
Gly Lys Leu Thr Leu Lys Leu Ile Cys Thr Thr Gly Lys Leu Pro Val
245 250 255
Pro Trp Pro Thr Leu Val Thr Thr Leu Gly Tyr Gly Leu Lys Cys Phe
260 265 270
Ala Arg Tyr Pro Asp His Met Lys Gln His Asp Phe Phe Lys Ser Ala
275 280 285
Met Pro Glu Gly Tyr Val Gln Glu Arg Thr Ile Phe Phe Lys Asp Asp
290 295 300
Gly Asn Tyr Lys Thr Arg Ala Glu Val Lys Phe Glu Gly Asp Thr Leu
305 310 315 320
Val Asn Arg Ile Glu Leu Lys Gly Ile Asp Phe Lys Glu Asp Gly Asn
325 330 335
Ile Leu Gly His Lys Leu Glu Tyr Asn Leu Pro Leu Val Ser Ser His
340 345 350
Arg Thr Arg Ile Phe Glu Ala Ile Met Ala Gly Lys Pro Glu Glu Ala
355 360 365
Arg Glu Ala Ser His Arg His Leu Ala Phe Ile Glu Glu Ile Leu Leu
370 375 380
Asp Arg Ser Arg Glu Glu Ser Arg Arg Glu Arg Ser Leu Arg Arg Leu
385 390 395 400
Glu Gln Arg Lys Asn
405
<210> 17
<211> 406
<212> PRT
<213> Artificial Sequence
<400> 17
Met Ser Gln Tyr Asp Leu Leu Glu Thr Arg His Ala Leu Glu Gly Ile
1 5 10 15
Ala Ala Tyr Tyr Ala Ala Leu Arg Ser Thr Asp Glu Asp Lys Glu Arg
20 25 30
Ile Arg Glu Leu His His Ala Ile Glu Leu Ala Gln Gln Ser Gly Asp
35 40 45
Leu Asp Ala Glu Ser Asn Ala Val Leu Gln Tyr Gln Ile Ala Val Thr
50 55 60
Glu Ala Ala His Asn Val Val Leu Leu His Leu Leu Arg Cys Met Glu
65 70 75 80
Pro Met Leu Ala Gln Asn Val Arg Gln Asn Phe Glu Leu Leu Tyr Ser
85 90 95
Arg Arg Glu Met Tyr Asn Ser Asp Asn Val Tyr Ile Met Ala Asp Lys
100 105 110
Gln Lys Asn Gly Ile Lys Ala Asn Phe Lys Ile Arg His Asn Val Glu
115 120 125
Asp Gly Ser Val Gln Leu Ala Asp His Tyr Gln Gln Asn Thr Pro Ile
130 135 140
Gly Asp Gly Pro Val Leu Leu Pro Asp Asn His Tyr Leu Ser Phe Gln
145 150 155 160
Ser Val Leu Ser Lys Asp Pro Asn Glu Lys Arg Asp His Met Val Leu
165 170 175
Leu Glu Phe Val Thr Ala Ala Gly Ile Thr Leu Gly Met Asp Glu Leu
180 185 190
Tyr Asn Val Asp Gly Gly Ser Gly Gly Thr Gly Ser Lys Gly Glu Glu
195 200 205
Leu Phe Thr Gly Val Val Pro Ile Leu Val Glu Leu Asp Gly Asp Val
210 215 220
Asn Gly His Lys Phe Ser Val Ser Gly Glu Gly Glu Gly Asp Ala Thr
225 230 235 240
Tyr Gly Lys Leu Thr Leu Lys Leu Ile Cys Thr Thr Gly Lys Leu Pro
245 250 255
Val Pro Trp Pro Thr Leu Val Thr Thr Leu Gly Tyr Gly Leu Lys Cys
260 265 270
Phe Ala Arg Tyr Pro Asp His Met Lys Gln His Asp Phe Phe Lys Ser
275 280 285
Ala Met Pro Glu Gly Tyr Val Gln Glu Arg Thr Ile Phe Phe Lys Asp
290 295 300
Asp Gly Asn Tyr Lys Thr Arg Ala Glu Val Lys Phe Glu Gly Asp Thr
305 310 315 320
Leu Val Asn Arg Ile Glu Leu Lys Gly Ile Asp Phe Lys Glu Asp Gly
325 330 335
Asn Ile Leu Gly His Lys Leu Glu Tyr Asn Leu Pro Leu Val Ser Ser
340 345 350
His Arg Thr Arg Ile Phe Glu Ala Ile Met Ala Gly Lys Pro Glu Glu
355 360 365
Ala Arg Glu Ala Ser His Arg His Leu Ala Phe Ile Glu Glu Ile Leu
370 375 380
Leu Asp Arg Ser Arg Glu Glu Ser Arg Arg Glu Arg Ser Leu Arg Arg
385 390 395 400
Leu Glu Gln Arg Lys Asn
405
<210> 18
<211> 403
<212> PRT
<213> Artificial Sequence
<400> 18
Met Ser Gln Tyr Asp Leu Leu Glu Thr Arg His Ala Leu Glu Gly Ile
1 5 10 15
Ala Ala Tyr Tyr Ala Ala Leu Arg Ser Thr Asp Glu Asp Lys Glu Arg
20 25 30
Ile Arg Glu Leu His His Ala Ile Glu Leu Ala Gln Gln Ser Gly Asp
35 40 45
Leu Asp Ala Glu Ser Asn Ala Val Leu Gln Tyr Gln Ile Ala Val Thr
50 55 60
Glu Ala Ala His Asn Val Val Leu Leu His Leu Leu Arg Cys Met Glu
65 70 75 80
Pro Met Leu Ala Gln Asn Val Arg Gln Asn Phe Glu Leu Leu Tyr Ser
85 90 95
Arg Arg Glu Met Leu Pro Leu Val Ser Ser His Arg Thr Arg Ile Phe
100 105 110
Glu Ala Ile Met Tyr Asn Ser Asp Asn Val Tyr Ile Met Ala Asp Lys
115 120 125
Gln Lys Asn Gly Ile Lys Ala Asn Phe Lys Ile Arg His Asn Val Glu
130 135 140
Asp Gly Ser Val Gln Leu Ala Asp His Tyr Gln Gln Asn Thr Pro Ile
145 150 155 160
Gly Asp Gly Pro Val Leu Leu Pro Asp Asn His Tyr Leu Ser Phe Gln
165 170 175
Ser Val Leu Ser Lys Asp Pro Asn Glu Lys Arg Asp His Met Val Leu
180 185 190
Leu Glu Phe Val Thr Ala Ala Gly Ile Thr Leu Gly Met Asp Glu Leu
195 200 205
Tyr Asn Val Asp Gly Gly Ser Gly Gly Thr Gly Ser Lys Gly Glu Glu
210 215 220
Leu Phe Thr Gly Val Val Pro Ile Leu Val Glu Leu Asp Gly Asp Val
225 230 235 240
Asn Gly His Lys Phe Ser Val Ser Gly Glu Gly Glu Gly Asp Ala Thr
245 250 255
Tyr Gly Lys Leu Thr Leu Lys Leu Ile Cys Thr Thr Gly Lys Leu Pro
260 265 270
Val Pro Trp Pro Thr Leu Val Thr Thr Leu Gly Tyr Gly Leu Lys Cys
275 280 285
Phe Ala Arg Tyr Pro Asp His Met Lys Gln His Asp Phe Phe Lys Ser
290 295 300
Ala Met Pro Glu Gly Tyr Val Gln Glu Arg Thr Ile Phe Phe Lys Asp
305 310 315 320
Asp Gly Asn Tyr Lys Thr Arg Ala Glu Val Lys Phe Glu Gly Asp Thr
325 330 335
Leu Val Asn Arg Ile Glu Leu Lys Gly Ile Asp Phe Lys Glu Asp Gly
340 345 350
Asn Ile Leu Gly His Lys Leu Glu Tyr Asn Pro Glu Glu Ala Arg Glu
355 360 365
Ala Ser His Arg His Leu Ala Phe Ile Glu Glu Ile Leu Leu Asp Arg
370 375 380
Ser Arg Glu Glu Ser Arg Arg Glu Arg Ser Leu Arg Arg Leu Glu Gln
385 390 395 400
Arg Lys Asn
<210> 19
<211> 405
<212> PRT
<213> Artificial Sequence
<220>
<221> misc_feature
<222> (44)..(44)
<223> The 'Xaa' at location 44 stands for A, N, D, G, H, L, K, M, P, S,or T.
<400> 19
Met Ser Gln Tyr Asp Leu Leu Glu Thr Arg His Ala Leu Glu Gly Ile
1 5 10 15
Ala Ala Tyr Tyr Ala Ala Leu Arg Ser Thr Asp Glu Asp Lys Glu Arg
20 25 30
Ile Arg Glu Leu His His Ala Ile Glu Leu Ala Xaa Gln Ser Gly Asp
35 40 45
Leu Asp Ala Glu Ser Asn Ala Val Leu Gln Tyr Gln Ile Ala Val Thr
50 55 60
Glu Ala Ala His Asn Val Val Leu Leu His Leu Leu Arg Cys Met Glu
65 70 75 80
Pro Met Leu Ala Gln Asn Val Arg Gln Asn Phe Glu Leu Leu Tyr Ser
85 90 95
Arg Tyr Asn Ser Asp Asn Val Tyr Ile Met Ala Asp Lys Gln Lys Asn
100 105 110
Gly Ile Lys Ala Asn Phe Lys Ile Arg His Asn Val Glu Asp Gly Ser
115 120 125
Val Gln Leu Ala Asp His Tyr Gln Gln Asn Thr Pro Ile Gly Asp Gly
130 135 140
Pro Val Leu Leu Pro Asp Asn His Tyr Leu Ser Phe Gln Ser Val Leu
145 150 155 160
Ser Lys Asp Pro Asn Glu Lys Arg Asp His Met Val Leu Leu Glu Phe
165 170 175
Val Thr Ala Ala Gly Ile Thr Leu Gly Met Asp Glu Leu Tyr Asn Val
180 185 190
Asp Gly Gly Ser Gly Gly Thr Gly Ser Lys Gly Glu Glu Leu Phe Thr
195 200 205
Gly Val Val Pro Ile Leu Val Glu Leu Asp Gly Asp Val Asn Gly His
210 215 220
Lys Phe Ser Val Ser Gly Glu Gly Glu Gly Asp Ala Thr Tyr Gly Lys
225 230 235 240
Leu Thr Leu Lys Leu Ile Cys Thr Thr Gly Lys Leu Pro Val Pro Trp
245 250 255
Pro Thr Leu Val Thr Thr Leu Gly Tyr Gly Leu Lys Cys Phe Ala Arg
260 265 270
Tyr Pro Asp His Met Lys Gln His Asp Phe Phe Lys Ser Ala Met Pro
275 280 285
Glu Gly Tyr Val Gln Glu Arg Thr Ile Phe Phe Lys Asp Asp Gly Asn
290 295 300
Tyr Lys Thr Arg Ala Glu Val Lys Phe Glu Gly Asp Thr Leu Val Asn
305 310 315 320
Arg Ile Glu Leu Lys Gly Ile Asp Phe Lys Glu Asp Gly Asn Ile Leu
325 330 335
Gly His Lys Leu Glu Tyr Asn Glu Met Leu Pro Leu Val Ser Ser His
340 345 350
Arg Thr Arg Ile Phe Glu Ala Ile Met Ala Gly Lys Pro Glu Glu Ala
355 360 365
Arg Glu Ala Ser His Arg His Leu Ala Phe Ile Glu Glu Ile Leu Leu
370 375 380
Asp Arg Ser Arg Glu Glu Ser Arg Arg Glu Arg Ser Leu Arg Arg Leu
385 390 395 400
Glu Gln Arg Lys Asn
405
<210> 20
<211> 405
<212> PRT
<213> Artificial Sequence
<220>
<221> misc_feature
<222> (97)..(97)
<223> The 'Xaa' at location 97 stands for A, N, D, C, Q, E, G, H, I, L,K, M, F, P, S, T, W, Y, or V.
<400> 20
Met Ser Gln Tyr Asp Leu Leu Glu Thr Arg His Ala Leu Glu Gly Ile
1 5 10 15
Ala Ala Tyr Tyr Ala Ala Leu Arg Ser Thr Asp Glu Asp Lys Glu Arg
20 25 30
Ile Arg Glu Leu His His Ala Ile Glu Leu Ala Gln Gln Ser Gly Asp
35 40 45
Leu Asp Ala Glu Ser Asn Ala Val Leu Gln Tyr Gln Ile Ala Val Thr
50 55 60
Glu Ala Ala His Asn Val Val Leu Leu His Leu Leu Arg Cys Met Glu
65 70 75 80
Pro Met Leu Ala Gln Asn Val Arg Gln Asn Phe Glu Leu Leu Tyr Ser
85 90 95
Xaa Tyr Asn Ser Asp Asn Val Tyr Ile Met Ala Asp Lys Gln Lys Asn
100 105 110
Gly Ile Lys Ala Asn Phe Lys Ile Arg His Asn Val Glu Asp Gly Ser
115 120 125
Val Gln Leu Ala Asp His Tyr Gln Gln Asn Thr Pro Ile Gly Asp Gly
130 135 140
Pro Val Leu Leu Pro Asp Asn His Tyr Leu Ser Phe Gln Ser Val Leu
145 150 155 160
Ser Lys Asp Pro Asn Glu Lys Arg Asp His Met Val Leu Leu Glu Phe
165 170 175
Val Thr Ala Ala Gly Ile Thr Leu Gly Met Asp Glu Leu Tyr Asn Val
180 185 190
Asp Gly Gly Ser Gly Gly Thr Gly Ser Lys Gly Glu Glu Leu Phe Thr
195 200 205
Gly Val Val Pro Ile Leu Val Glu Leu Asp Gly Asp Val Asn Gly His
210 215 220
Lys Phe Ser Val Ser Gly Glu Gly Glu Gly Asp Ala Thr Tyr Gly Lys
225 230 235 240
Leu Thr Leu Lys Leu Ile Cys Thr Thr Gly Lys Leu Pro Val Pro Trp
245 250 255
Pro Thr Leu Val Thr Thr Leu Gly Tyr Gly Leu Lys Cys Phe Ala Arg
260 265 270
Tyr Pro Asp His Met Lys Gln His Asp Phe Phe Lys Ser Ala Met Pro
275 280 285
Glu Gly Tyr Val Gln Glu Arg Thr Ile Phe Phe Lys Asp Asp Gly Asn
290 295 300
Tyr Lys Thr Arg Ala Glu Val Lys Phe Glu Gly Asp Thr Leu Val Asn
305 310 315 320
Arg Ile Glu Leu Lys Gly Ile Asp Phe Lys Glu Asp Gly Asn Ile Leu
325 330 335
Gly His Lys Leu Glu Tyr Asn Glu Met Leu Pro Leu Val Ser Ser His
340 345 350
Arg Thr Arg Ile Phe Glu Ala Ile Met Ala Gly Lys Pro Glu Glu Ala
355 360 365
Arg Glu Ala Ser His Arg His Leu Ala Phe Ile Glu Glu Ile Leu Leu
370 375 380
Asp Arg Ser Arg Glu Glu Ser Arg Arg Glu Arg Ser Leu Arg Arg Leu
385 390 395 400
Glu Gln Arg Lys Asn
405
<210> 21
<211> 405
<212> PRT
<213> Artificial Sequence
<220>
<221> misc_feature
<222> (344)..(344)
<223> The 'Xaa' at location 344 stands for A, R, D, C, Q, I, L, K, M, F,P, S, T, Y, or V.
<400> 21
Met Ser Gln Tyr Asp Leu Leu Glu Thr Arg His Ala Leu Glu Gly Ile
1 5 10 15
Ala Ala Tyr Tyr Ala Ala Leu Arg Ser Thr Asp Glu Asp Lys Glu Arg
20 25 30
Ile Arg Glu Leu His His Ala Ile Glu Leu Ala Gln Gln Ser Gly Asp
35 40 45
Leu Asp Ala Glu Ser Asn Ala Val Leu Gln Tyr Gln Ile Ala Val Thr
50 55 60
Glu Ala Ala His Asn Val Val Leu Leu His Leu Leu Arg Cys Met Glu
65 70 75 80
Pro Met Leu Ala Gln Asn Val Arg Gln Asn Phe Glu Leu Leu Tyr Ser
85 90 95
Arg Tyr Asn Ser Asp Asn Val Tyr Ile Met Ala Asp Lys Gln Lys Asn
100 105 110
Gly Ile Lys Ala Asn Phe Lys Ile Arg His Asn Val Glu Asp Gly Ser
115 120 125
Val Gln Leu Ala Asp His Tyr Gln Gln Asn Thr Pro Ile Gly Asp Gly
130 135 140
Pro Val Leu Leu Pro Asp Asn His Tyr Leu Ser Phe Gln Ser Val Leu
145 150 155 160
Ser Lys Asp Pro Asn Glu Lys Arg Asp His Met Val Leu Leu Glu Phe
165 170 175
Val Thr Ala Ala Gly Ile Thr Leu Gly Met Asp Glu Leu Tyr Asn Val
180 185 190
Asp Gly Gly Ser Gly Gly Thr Gly Ser Lys Gly Glu Glu Leu Phe Thr
195 200 205
Gly Val Val Pro Ile Leu Val Glu Leu Asp Gly Asp Val Asn Gly His
210 215 220
Lys Phe Ser Val Ser Gly Glu Gly Glu Gly Asp Ala Thr Tyr Gly Lys
225 230 235 240
Leu Thr Leu Lys Leu Ile Cys Thr Thr Gly Lys Leu Pro Val Pro Trp
245 250 255
Pro Thr Leu Val Thr Thr Leu Gly Tyr Gly Leu Lys Cys Phe Ala Arg
260 265 270
Tyr Pro Asp His Met Lys Gln His Asp Phe Phe Lys Ser Ala Met Pro
275 280 285
Glu Gly Tyr Val Gln Glu Arg Thr Ile Phe Phe Lys Asp Asp Gly Asn
290 295 300
Tyr Lys Thr Arg Ala Glu Val Lys Phe Glu Gly Asp Thr Leu Val Asn
305 310 315 320
Arg Ile Glu Leu Lys Gly Ile Asp Phe Lys Glu Asp Gly Asn Ile Leu
325 330 335
Gly His Lys Leu Glu Tyr Asn Xaa Met Leu Pro Leu Val Ser Ser His
340 345 350
Arg Thr Arg Ile Phe Glu Ala Ile Met Ala Gly Lys Pro Glu Glu Ala
355 360 365
Arg Glu Ala Ser His Arg His Leu Ala Phe Ile Glu Glu Ile Leu Leu
370 375 380
Asp Arg Ser Arg Glu Glu Ser Arg Arg Glu Arg Ser Leu Arg Arg Leu
385 390 395 400
Glu Gln Arg Lys Asn
405
<210> 22
<211> 405
<212> PRT
<213> Artificial Sequence
<220>
<221> misc_feature
<222> (345)..(345)
<223> The 'Xaa' at location 345 stands for A, R, N, D, C, Q, E, G, L, K,F, P, S, T, W, Y, or V.
<400> 22
Met Ser Gln Tyr Asp Leu Leu Glu Thr Arg His Ala Leu Glu Gly Ile
1 5 10 15
Ala Ala Tyr Tyr Ala Ala Leu Arg Ser Thr Asp Glu Asp Lys Glu Arg
20 25 30
Ile Arg Glu Leu His His Ala Ile Glu Leu Ala Gln Gln Ser Gly Asp
35 40 45
Leu Asp Ala Glu Ser Asn Ala Val Leu Gln Tyr Gln Ile Ala Val Thr
50 55 60
Glu Ala Ala His Asn Val Val Leu Leu His Leu Leu Arg Cys Met Glu
65 70 75 80
Pro Met Leu Ala Gln Asn Val Arg Gln Asn Phe Glu Leu Leu Tyr Ser
85 90 95
Arg Arg Tyr Asn Ser Asp Asn Val Tyr Ile Met Ala Asp Lys Gln Lys
100 105 110
Asn Gly Ile Lys Ala Asn Phe Lys Ile Arg His Asn Val Glu Asp Gly
115 120 125
Ser Val Gln Leu Ala Asp His Tyr Gln Gln Asn Thr Pro Ile Gly Asp
130 135 140
Gly Pro Val Leu Leu Pro Asp Asn His Tyr Leu Ser Phe Gln Ser Val
145 150 155 160
Leu Ser Lys Asp Pro Asn Glu Lys Arg Asp His Met Val Leu Leu Glu
165 170 175
Phe Val Thr Ala Ala Gly Ile Thr Leu Gly Met Asp Glu Leu Tyr Asn
180 185 190
Val Asp Gly Gly Ser Gly Gly Thr Gly Ser Lys Gly Glu Glu Leu Phe
195 200 205
Thr Gly Val Val Pro Ile Leu Val Glu Leu Asp Gly Asp Val Asn Gly
210 215 220
His Lys Phe Ser Val Ser Gly Glu Gly Glu Gly Asp Ala Thr Tyr Gly
225 230 235 240
Lys Leu Thr Leu Lys Leu Ile Cys Thr Thr Gly Lys Leu Pro Val Pro
245 250 255
Trp Pro Thr Leu Val Thr Thr Leu Gly Tyr Gly Leu Lys Cys Phe Ala
260 265 270
Arg Tyr Pro Asp His Met Lys Gln His Asp Phe Phe Lys Ser Ala Met
275 280 285
Pro Glu Gly Tyr Val Gln Glu Arg Thr Ile Phe Phe Lys Asp Asp Gly
290 295 300
Asn Tyr Lys Thr Arg Ala Glu Val Lys Phe Glu Gly Asp Thr Leu Val
305 310 315 320
Asn Arg Ile Glu Leu Lys Gly Ile Asp Phe Lys Glu Asp Gly Asn Ile
325 330 335
Leu Gly His Lys Leu Glu Tyr Asn Xaa Leu Pro Leu Val Ser Ser His
340 345 350
Arg Thr Arg Ile Phe Glu Ala Ile Met Ala Gly Lys Pro Glu Glu Ala
355 360 365
Arg Glu Ala Ser His Arg His Leu Ala Phe Ile Glu Glu Ile Leu Leu
370 375 380
Asp Arg Ser Arg Glu Glu Ser Arg Arg Glu Arg Ser Leu Arg Arg Leu
385 390 395 400
Glu Gln Arg Lys Asn
405
<210> 23
<211> 404
<212> PRT
<213> Artificial Sequence
<220>
<221> misc_feature
<222> (345)..(345)
<223> The 'Xaa' at location 345 stands for D, H, I, or Y.
<400> 23
Met Ser Gln Tyr Asp Leu Leu Glu Thr Arg His Ala Leu Glu Gly Ile
1 5 10 15
Ala Ala Tyr Tyr Ala Ala Leu Arg Ser Thr Asp Glu Asp Lys Glu Arg
20 25 30
Ile Arg Glu Leu His His Ala Ile Glu Leu Ala Gln Gln Ser Gly Asp
35 40 45
Leu Asp Ala Glu Ser Asn Ala Val Leu Gln Tyr Gln Ile Ala Val Thr
50 55 60
Glu Ala Ala His Asn Val Val Leu Leu His Leu Leu Arg Cys Met Glu
65 70 75 80
Pro Met Leu Ala Gln Asn Val Arg Gln Asn Phe Glu Leu Leu Tyr Ser
85 90 95
Arg Arg Tyr Asn Ser Asp Asn Val Tyr Ile Met Ala Asp Lys Gln Lys
100 105 110
Asn Gly Ile Lys Ala Asn Phe Lys Ile Arg His Asn Val Glu Asp Gly
115 120 125
Ser Val Gln Leu Ala Asp His Tyr Gln Gln Asn Thr Pro Ile Gly Asp
130 135 140
Gly Pro Val Leu Leu Pro Asp Asn His Tyr Leu Ser Phe Gln Ser Val
145 150 155 160
Leu Ser Lys Asp Pro Asn Glu Lys Arg Asp His Met Val Leu Leu Glu
165 170 175
Phe Val Thr Ala Ala Gly Ile Thr Leu Gly Met Asp Glu Leu Tyr Asn
180 185 190
Val Asp Gly Gly Ser Gly Gly Thr Gly Ser Lys Gly Glu Glu Leu Phe
195 200 205
Thr Gly Val Val Pro Ile Leu Val Glu Leu Asp Gly Asp Val Asn Gly
210 215 220
His Lys Phe Ser Val Ser Gly Glu Gly Glu Gly Asp Ala Thr Tyr Gly
225 230 235 240
Lys Leu Thr Leu Lys Leu Ile Cys Thr Thr Gly Lys Leu Pro Val Pro
245 250 255
Trp Pro Thr Leu Val Thr Thr Leu Gly Tyr Gly Leu Lys Cys Phe Ala
260 265 270
Arg Tyr Pro Asp His Met Lys Gln His Asp Phe Phe Lys Ser Ala Met
275 280 285
Pro Glu Gly Tyr Val Gln Glu Arg Thr Ile Phe Phe Lys Asp Asp Gly
290 295 300
Asn Tyr Lys Thr Arg Ala Glu Val Lys Phe Glu Gly Asp Thr Leu Val
305 310 315 320
Asn Arg Ile Glu Leu Lys Gly Ile Asp Phe Lys Glu Asp Gly Asn Ile
325 330 335
Leu Gly His Lys Leu Glu Tyr Asn Xaa Pro Leu Val Ser Ser His Arg
340 345 350
Thr Arg Ile Phe Glu Ala Ile Met Ala Gly Lys Pro Glu Glu Ala Arg
355 360 365
Glu Ala Ser His Arg His Leu Ala Phe Ile Glu Glu Ile Leu Leu Asp
370 375 380
Arg Ser Arg Glu Glu Ser Arg Arg Glu Arg Ser Leu Arg Arg Leu Glu
385 390 395 400
Gln Arg Lys Asn
<210> 24
<211> 405
<212> PRT
<213> Artificial Sequence
<400> 24
Met Ser Gln Tyr Asp Leu Leu Glu Thr Arg His Ala Leu Glu Gly Ile
1 5 10 15
Ala Ala Tyr Tyr Ala Ala Leu Arg Ser Thr Asp Glu Asp Lys Glu Arg
20 25 30
Ile Arg Glu Leu His His Ala Ile Glu Leu Ala Gln Gln Ser Gly Asp
35 40 45
Leu Asp Ala Glu Ser Asn Ala Val Leu Gln Tyr Gln Ile Ala Val Thr
50 55 60
Glu Ala Ala His Asn Val Val Leu Leu His Leu Leu Arg Cys Met Glu
65 70 75 80
Pro Met Leu Ala Gln Asn Val Arg Gln Asn Phe Glu Leu Leu Tyr Glu
85 90 95
Asn Asp Tyr Asn Ser Asp Asn Val Tyr Ile Met Ala Asp Lys Gln Lys
100 105 110
Asn Gly Ile Lys Ala Asn Phe Lys Ile Arg His Asn Val Glu Asp Gly
115 120 125
Ser Val Gln Leu Ala Asp His Tyr Gln Gln Asn Thr Pro Ile Gly Asp
130 135 140
Gly Pro Val Leu Leu Pro Asp Asn His Tyr Leu Ser Phe Gln Ser Val
145 150 155 160
Leu Ser Lys Asp Pro Asn Glu Lys Arg Asp His Met Val Leu Leu Glu
165 170 175
Phe Val Thr Ala Ala Gly Ile Thr Leu Gly Met Asp Glu Leu Tyr Asn
180 185 190
Val Asp Gly Gly Ser Gly Gly Thr Gly Ser Lys Gly Glu Glu Leu Phe
195 200 205
Thr Gly Val Val Pro Ile Leu Val Glu Leu Asp Gly Asp Val Asn Gly
210 215 220
His Lys Phe Ser Val Ser Gly Glu Gly Glu Gly Asp Ala Thr Tyr Gly
225 230 235 240
Lys Leu Thr Leu Lys Leu Ile Cys Thr Thr Gly Lys Leu Pro Val Pro
245 250 255
Trp Pro Thr Leu Val Thr Thr Leu Gly Tyr Gly Leu Lys Cys Phe Ala
260 265 270
Arg Tyr Pro Asp His Met Lys Gln His Asp Phe Phe Lys Ser Ala Met
275 280 285
Pro Glu Gly Tyr Val Gln Glu Arg Thr Ile Phe Phe Lys Asp Asp Gly
290 295 300
Asn Tyr Lys Thr Arg Ala Glu Val Lys Phe Glu Gly Asp Thr Leu Val
305 310 315 320
Asn Arg Ile Glu Leu Lys Gly Ile Asp Phe Lys Glu Asp Gly Asn Ile
325 330 335
Leu Gly His Lys Leu Glu Tyr Asn Val Leu Pro Leu Val Ser Ser His
340 345 350
Arg Thr Arg Ile Phe Glu Ala Ile Met Ala Gly Lys Pro Glu Glu Ala
355 360 365
Arg Glu Ala Ser His Arg His Leu Ala Phe Ile Glu Glu Ile Leu Leu
370 375 380
Asp Arg Ser Arg Glu Glu Ser Arg Arg Glu Arg Ser Leu Arg Arg Leu
385 390 395 400
Glu Gln Arg Lys Asn
405
<210> 25
<211> 405
<212> PRT
<213> Artificial Sequence
<400> 25
Met Ser Gln Tyr Asp Leu Leu Glu Thr Arg His Ala Leu Glu Gly Ile
1 5 10 15
Ala Ala Tyr Tyr Ala Ala Leu Arg Ser Thr Asp Glu Asp Lys Glu Arg
20 25 30
Ile Arg Glu Leu His His Ala Ile Glu Leu Ala Gln Gln Ser Gly Asp
35 40 45
Leu Asp Ala Glu Ser Asn Ala Val Leu Gln Tyr Gln Ile Ala Val Thr
50 55 60
Glu Ala Ala His Asn Val Val Leu Leu His Leu Leu Arg Cys Met Glu
65 70 75 80
Pro Met Leu Ala Gln Asn Val Arg Gln Asn Phe Glu Leu Leu Tyr Asp
85 90 95
Tyr Thr Tyr Asn Ser Asp Asn Val Tyr Ile Met Ala Asp Lys Gln Lys
100 105 110
Asn Gly Ile Lys Ala Asn Phe Lys Ile Arg His Asn Val Glu Asp Gly
115 120 125
Ser Val Gln Leu Ala Asp His Tyr Gln Gln Asn Thr Pro Ile Gly Asp
130 135 140
Gly Pro Val Leu Leu Pro Asp Asn His Tyr Leu Ser Phe Gln Ser Val
145 150 155 160
Leu Ser Lys Asp Pro Asn Glu Lys Arg Asp His Met Val Leu Leu Glu
165 170 175
Phe Val Thr Ala Ala Gly Ile Thr Leu Gly Met Asp Glu Leu Tyr Asn
180 185 190
Val Asp Gly Gly Ser Gly Gly Thr Gly Ser Lys Gly Glu Glu Leu Phe
195 200 205
Thr Gly Val Val Pro Ile Leu Val Glu Leu Asp Gly Asp Val Asn Gly
210 215 220
His Lys Phe Ser Val Ser Gly Glu Gly Glu Gly Asp Ala Thr Tyr Gly
225 230 235 240
Lys Leu Thr Leu Lys Leu Ile Cys Thr Thr Gly Lys Leu Pro Val Pro
245 250 255
Trp Pro Thr Leu Val Thr Thr Leu Gly Tyr Gly Leu Lys Cys Phe Ala
260 265 270
Arg Tyr Pro Asp His Met Lys Gln His Asp Phe Phe Lys Ser Ala Met
275 280 285
Pro Glu Gly Tyr Val Gln Glu Arg Thr Ile Phe Phe Lys Asp Asp Gly
290 295 300
Asn Tyr Lys Thr Arg Ala Glu Val Lys Phe Glu Gly Asp Thr Leu Val
305 310 315 320
Asn Arg Ile Glu Leu Lys Gly Ile Asp Phe Lys Glu Asp Gly Asn Ile
325 330 335
Leu Gly His Lys Leu Glu Tyr Asn Val Leu Pro Leu Val Ser Ser His
340 345 350
Arg Thr Arg Ile Phe Glu Ala Ile Met Ala Gly Lys Pro Glu Glu Ala
355 360 365
Arg Glu Ala Ser His Arg His Leu Ala Phe Ile Glu Glu Ile Leu Leu
370 375 380
Asp Arg Ser Arg Glu Glu Ser Arg Arg Glu Arg Ser Leu Arg Arg Leu
385 390 395 400
Glu Gln Arg Lys Asn
405
<210> 26
<211> 405
<212> PRT
<213> Artificial Sequence
<400> 26
Met Ser Gln Tyr Asp Leu Leu Glu Thr Arg His Ala Leu Glu Gly Ile
1 5 10 15
Ala Ala Tyr Tyr Ala Ala Leu Arg Ser Thr Asp Glu Asp Lys Glu Arg
20 25 30
Ile Arg Glu Leu His His Ala Ile Glu Leu Ala Gln Gln Ser Gly Tyr
35 40 45
Asn Ser Asp Asn Val Tyr Ile Met Ala Asp Lys Gln Lys Asn Gly Ile
50 55 60
Lys Ala Asn Phe Lys Ile Arg His Asn Val Glu Asp Gly Ser Val Gln
65 70 75 80
Leu Ala Asp His Tyr Gln Gln Asn Thr Pro Ile Gly Asp Gly Pro Val
85 90 95
Leu Leu Pro Asp Asn His Tyr Leu Ser Phe Gln Ser Val Leu Ser Lys
100 105 110
Asp Pro Asn Glu Lys Arg Asp His Met Val Leu Leu Glu Phe Val Thr
115 120 125
Ala Ala Gly Ile Thr Leu Gly Met Asp Glu Leu Tyr Asn Val Asp Gly
130 135 140
Gly Ser Gly Gly Thr Gly Ser Lys Gly Glu Glu Leu Phe Thr Gly Val
145 150 155 160
Val Pro Ile Leu Val Glu Leu Asp Gly Asp Val Asn Gly His Lys Phe
165 170 175
Ser Val Ser Gly Glu Gly Glu Gly Asp Ala Thr Tyr Gly Lys Leu Thr
180 185 190
Leu Lys Leu Ile Cys Thr Thr Gly Lys Leu Pro Val Pro Trp Pro Thr
195 200 205
Leu Val Thr Thr Leu Gly Tyr Gly Leu Lys Cys Phe Ala Arg Tyr Pro
210 215 220
Asp His Met Lys Gln His Asp Phe Phe Lys Ser Ala Met Pro Glu Gly
225 230 235 240
Tyr Val Gln Glu Arg Thr Ile Phe Phe Lys Asp Asp Gly Asn Tyr Lys
245 250 255
Thr Arg Ala Glu Val Lys Phe Glu Gly Asp Thr Leu Val Asn Arg Ile
260 265 270
Glu Leu Lys Gly Ile Asp Phe Lys Glu Asp Gly Asn Ile Leu Gly His
275 280 285
Lys Leu Glu Tyr Asn Leu Asp Ala Glu Ser Asn Ala Val Leu Gln Tyr
290 295 300
Gln Ile Ala Val Thr Glu Ala Ala His Asn Val Val Leu Leu His Leu
305 310 315 320
Leu Arg Cys Met Glu Pro Met Leu Ala Gln Asn Val Arg Gln Asn Phe
325 330 335
Glu Leu Leu Tyr Pro His Pro Glu Met Leu Pro Leu Val Ser Ser His
340 345 350
Arg Thr Arg Ile Phe Glu Ala Ile Met Ala Gly Lys Pro Glu Glu Ala
355 360 365
Arg Glu Ala Ser His Arg His Leu Ala Phe Ile Glu Glu Ile Leu Leu
370 375 380
Asp Arg Ser Arg Glu Glu Ser Arg Arg Glu Arg Ser Leu Arg Arg Leu
385 390 395 400
Glu Gln Arg Lys Asn
405
<210> 27
<211> 405
<212> PRT
<213> Artificial Sequence
<400> 27
Met Ser Gln Tyr Asp Leu Leu Glu Thr Arg His Ala Leu Glu Gly Ile
1 5 10 15
Ala Ala Tyr Tyr Ala Ala Leu Arg Ser Thr Asp Glu Asp Lys Glu Arg
20 25 30
Ile Arg Glu Leu His His Ala Ile Glu Leu Ala Gln Gln Ser Gly Tyr
35 40 45
Asn Ser Asp Asn Val Tyr Ile Met Ala Asp Lys Gln Lys Asn Gly Ile
50 55 60
Lys Ala Asn Phe Lys Ile Arg His Asn Val Glu Asp Gly Ser Val Gln
65 70 75 80
Leu Ala Asp His Tyr Gln Gln Asn Thr Pro Ile Gly Asp Gly Pro Val
85 90 95
Leu Leu Pro Asp Asn His Tyr Leu Ser Phe Gln Ser Val Leu Ser Lys
100 105 110
Asp Pro Asn Glu Lys Arg Asp His Met Val Leu Leu Glu Phe Val Thr
115 120 125
Ala Ala Gly Ile Thr Leu Gly Met Asp Glu Leu Tyr Asn Val Asp Gly
130 135 140
Gly Ser Gly Gly Thr Gly Ser Lys Gly Glu Glu Leu Phe Thr Gly Val
145 150 155 160
Val Pro Ile Leu Val Glu Leu Asp Gly Asp Val Asn Gly His Lys Phe
165 170 175
Ser Val Ser Gly Glu Gly Glu Gly Asp Ala Thr Tyr Gly Lys Leu Thr
180 185 190
Leu Lys Leu Ile Cys Thr Thr Gly Lys Leu Pro Val Pro Trp Pro Thr
195 200 205
Leu Val Thr Thr Leu Gly Tyr Gly Leu Lys Cys Phe Ala Arg Tyr Pro
210 215 220
Asp His Met Lys Gln His Asp Phe Phe Lys Ser Ala Met Pro Glu Gly
225 230 235 240
Tyr Val Gln Glu Arg Thr Ile Phe Phe Lys Asp Asp Gly Asn Tyr Lys
245 250 255
Thr Arg Ala Glu Val Lys Phe Glu Gly Asp Thr Leu Val Asn Arg Ile
260 265 270
Glu Leu Lys Gly Ile Asp Phe Lys Glu Asp Gly Asn Ile Leu Gly His
275 280 285
Lys Leu Glu Tyr Asn Leu Asp Ala Glu Ser Asn Ala Val Leu Gln Tyr
290 295 300
Gln Ile Ala Val Thr Glu Ala Ala His Asn Val Val Leu Leu His Leu
305 310 315 320
Leu Arg Cys Met Glu Pro Met Leu Ala Gln Asn Val Arg Gln Asn Phe
325 330 335
Glu Leu Leu Tyr Arg Ser Pro Glu Met Leu Pro Leu Val Ser Ser His
340 345 350
Arg Thr Arg Ile Phe Glu Ala Ile Met Ala Gly Lys Pro Glu Glu Ala
355 360 365
Arg Glu Ala Ser His Arg His Leu Ala Phe Ile Glu Glu Ile Leu Leu
370 375 380
Asp Arg Ser Arg Glu Glu Ser Arg Arg Glu Arg Ser Leu Arg Arg Leu
385 390 395 400
Glu Gln Arg Lys Asn
405
<210> 28
<211> 405
<212> PRT
<213> Artificial Sequence
<400> 28
Met Ser Gln Tyr Asp Leu Leu Glu Thr Arg His Ala Leu Glu Gly Ile
1 5 10 15
Ala Ala Tyr Tyr Ala Ala Leu Arg Ser Thr Asp Glu Asp Lys Glu Arg
20 25 30
Ile Arg Glu Leu His His Ala Ile Glu Leu Ala Gln Gln Ser Gly Tyr
35 40 45
Asn Ser Asp Asn Val Tyr Ile Met Ala Asp Lys Gln Lys Asn Gly Ile
50 55 60
Lys Ala Asn Phe Lys Ile Arg His Asn Val Glu Asp Gly Ser Val Gln
65 70 75 80
Leu Ala Asp His Tyr Gln Gln Asn Thr Pro Ile Gly Asp Gly Pro Val
85 90 95
Leu Leu Pro Asp Asn His Tyr Leu Ser Phe Gln Ser Val Leu Ser Lys
100 105 110
Asp Pro Asn Glu Lys Arg Asp His Met Val Leu Leu Glu Phe Val Thr
115 120 125
Ala Ala Gly Ile Thr Leu Gly Met Asp Glu Leu Tyr Asn Val Asp Gly
130 135 140
Gly Ser Gly Gly Thr Gly Ser Lys Gly Glu Glu Leu Phe Thr Gly Val
145 150 155 160
Val Pro Ile Leu Val Glu Leu Asp Gly Asp Val Asn Gly His Lys Phe
165 170 175
Ser Val Ser Gly Glu Gly Glu Gly Asp Ala Thr Tyr Gly Lys Leu Thr
180 185 190
Leu Lys Leu Ile Cys Thr Thr Gly Lys Leu Pro Val Pro Trp Pro Thr
195 200 205
Leu Val Thr Thr Leu Gly Tyr Gly Leu Lys Cys Phe Ala Arg Tyr Pro
210 215 220
Asp His Met Lys Gln His Asp Phe Phe Lys Ser Ala Met Pro Glu Gly
225 230 235 240
Tyr Val Gln Glu Arg Thr Ile Phe Phe Lys Asp Asp Gly Asn Tyr Lys
245 250 255
Thr Arg Ala Glu Val Lys Phe Glu Gly Asp Thr Leu Val Asn Arg Ile
260 265 270
Glu Leu Lys Gly Ile Asp Phe Lys Glu Asp Gly Asn Ile Leu Gly His
275 280 285
Lys Leu Glu Tyr Asn Leu Asp Ala Glu Ser Asn Ala Val Leu Gln Tyr
290 295 300
Gln Ile Ala Val Thr Glu Ala Ala His Asn Val Val Leu Leu His Leu
305 310 315 320
Leu Arg Cys Met Glu Pro Met Leu Ala Gln Asn Val Arg Gln Asn Phe
325 330 335
Glu Leu Leu Tyr Leu Val Arg Glu Met Leu Pro Leu Val Ser Ser His
340 345 350
Arg Thr Arg Ile Phe Glu Ala Ile Met Ala Gly Lys Pro Glu Glu Ala
355 360 365
Arg Glu Ala Ser His Arg His Leu Ala Phe Ile Glu Glu Ile Leu Leu
370 375 380
Asp Arg Ser Arg Glu Glu Ser Arg Arg Glu Arg Ser Leu Arg Arg Leu
385 390 395 400
Glu Gln Arg Lys Asn
405
<210> 29
<211> 405
<212> PRT
<213> Artificial Sequence
<400> 29
Met Ser Gln Tyr Asp Leu Leu Glu Thr Arg His Ala Leu Glu Gly Ile
1 5 10 15
Ala Ala Tyr Tyr Ala Ala Leu Arg Ser Thr Asp Glu Asp Lys Glu Arg
20 25 30
Ile Arg Glu Leu His His Ala Ile Glu Leu Ala Gln Gln Ser Gly Tyr
35 40 45
Asn Ser Asp Asn Val Tyr Ile Met Ala Asp Lys Gln Lys Asn Gly Ile
50 55 60
Lys Ala Asn Phe Lys Ile Arg His Asn Val Glu Asp Gly Ser Val Gln
65 70 75 80
Leu Ala Asp His Tyr Gln Gln Asn Thr Pro Ile Gly Asp Gly Pro Val
85 90 95
Leu Leu Pro Asp Asn His Tyr Leu Ser Phe Gln Ser Val Leu Ser Lys
100 105 110
Asp Pro Asn Glu Lys Arg Asp His Met Val Leu Leu Glu Phe Val Thr
115 120 125
Ala Ala Gly Ile Thr Leu Gly Met Asp Glu Leu Tyr Asn Val Asp Gly
130 135 140
Gly Ser Gly Gly Thr Gly Ser Lys Gly Glu Glu Leu Phe Thr Gly Val
145 150 155 160
Val Pro Ile Leu Val Glu Leu Asp Gly Asp Val Asn Gly His Lys Phe
165 170 175
Ser Val Ser Gly Glu Gly Glu Gly Asp Ala Thr Tyr Gly Lys Leu Thr
180 185 190
Leu Lys Leu Ile Cys Thr Thr Gly Lys Leu Pro Val Pro Trp Pro Thr
195 200 205
Leu Val Thr Thr Leu Gly Tyr Gly Leu Lys Cys Phe Ala Arg Tyr Pro
210 215 220
Asp His Met Lys Gln His Asp Phe Phe Lys Ser Ala Met Pro Glu Gly
225 230 235 240
Tyr Val Gln Glu Arg Thr Ile Phe Phe Lys Asp Asp Gly Asn Tyr Lys
245 250 255
Thr Arg Ala Glu Val Lys Phe Glu Gly Asp Thr Leu Val Asn Arg Ile
260 265 270
Glu Leu Lys Gly Ile Asp Phe Lys Glu Asp Gly Asn Ile Leu Gly His
275 280 285
Lys Leu Glu Tyr Asn Leu Asp Ala Glu Ser Asn Ala Val Leu Gln Tyr
290 295 300
Gln Ile Ala Val Thr Glu Ala Ala His Asn Val Val Leu Leu His Leu
305 310 315 320
Leu Arg Cys Met Glu Pro Met Leu Ala Gln Asn Val Arg Gln Asn Phe
325 330 335
Glu Leu Leu Tyr Thr Gln Glu Glu Met Leu Pro Leu Val Ser Ser His
340 345 350
Arg Thr Arg Ile Phe Glu Ala Ile Met Ala Gly Lys Pro Glu Glu Ala
355 360 365
Arg Glu Ala Ser His Arg His Leu Ala Phe Ile Glu Glu Ile Leu Leu
370 375 380
Asp Arg Ser Arg Glu Glu Ser Arg Arg Glu Arg Ser Leu Arg Arg Leu
385 390 395 400
Glu Gln Arg Lys Asn
405
<210> 30
<211> 405
<212> PRT
<213> Artificial Sequence
<400> 30
Met Ser Gln Tyr Asp Leu Leu Glu Thr Arg His Ala Leu Glu Gly Ile
1 5 10 15
Ala Ala Tyr Tyr Ala Ala Leu Arg Ser Thr Asp Glu Asp Lys Glu Arg
20 25 30
Ile Arg Glu Leu His His Ala Ile Glu Leu Ala Gln Gln Ser Gly Tyr
35 40 45
Asn Ser Asp Asn Val Tyr Ile Met Ala Asp Lys Gln Lys Asn Gly Ile
50 55 60
Lys Ala Asn Phe Lys Ile Arg His Asn Val Glu Asp Gly Ser Val Gln
65 70 75 80
Leu Ala Asp His Tyr Gln Gln Asn Thr Pro Ile Gly Asp Gly Pro Val
85 90 95
Leu Leu Pro Asp Asn His Tyr Leu Ser Phe Gln Ser Val Leu Ser Lys
100 105 110
Asp Pro Asn Glu Lys Arg Asp His Met Val Leu Leu Glu Phe Val Thr
115 120 125
Ala Ala Gly Ile Thr Leu Gly Met Asp Glu Leu Tyr Asn Val Asp Gly
130 135 140
Gly Ser Gly Gly Thr Gly Ser Lys Gly Glu Glu Leu Phe Thr Gly Val
145 150 155 160
Val Pro Ile Leu Val Glu Leu Asp Gly Asp Val Asn Gly His Lys Phe
165 170 175
Ser Val Ser Gly Glu Gly Glu Gly Asp Ala Thr Tyr Gly Lys Leu Thr
180 185 190
Leu Lys Leu Ile Cys Thr Thr Gly Lys Leu Pro Val Pro Trp Pro Thr
195 200 205
Leu Val Thr Thr Leu Gly Tyr Gly Leu Lys Cys Phe Ala Arg Tyr Pro
210 215 220
Asp His Met Lys Gln His Asp Phe Phe Lys Ser Ala Met Pro Glu Gly
225 230 235 240
Tyr Val Gln Glu Arg Thr Ile Phe Phe Lys Asp Asp Gly Asn Tyr Lys
245 250 255
Thr Arg Ala Glu Val Lys Phe Glu Gly Asp Thr Leu Val Asn Arg Ile
260 265 270
Glu Leu Lys Gly Ile Asp Phe Lys Glu Asp Gly Asn Ile Leu Gly His
275 280 285
Lys Leu Glu Tyr Asn Leu Asp Ala Glu Ser Asn Ala Val Leu Gln Tyr
290 295 300
Gln Ile Ala Val Thr Glu Ala Ala His Asn Val Val Leu Leu His Leu
305 310 315 320
Leu Arg Cys Met Glu Pro Met Leu Ala Gln Asn Val Arg Gln Asn Phe
325 330 335
Glu Leu Leu Tyr Ser Ser Thr Glu Met Leu Pro Leu Val Ser Ser His
340 345 350
Arg Thr Arg Ile Phe Glu Ala Ile Met Ala Gly Lys Pro Glu Glu Ala
355 360 365
Arg Glu Ala Ser His Arg His Leu Ala Phe Ile Glu Glu Ile Leu Leu
370 375 380
Asp Arg Ser Arg Glu Glu Ser Arg Arg Glu Arg Ser Leu Arg Arg Leu
385 390 395 400
Glu Gln Arg Lys Asn
405
<210> 31
<211> 1218
<212> DNA
<213> Artificial Sequence
<400> 31
atgtcacagt atgacttgct cgaaacacga cacgccctgg aaggtatcgc cgcttattac 60
gccgcgctgc gtagtaccga tgaagacaag gaacgcatcc gtgaactcca ccacgccata 120
gagctggcgc agcagtctgg cgatctggac gcggaatcaa acgccgtact ccagtatcag 180
attgccgtca ccgaagcggc ccacaatgtg gttctgcttc atctgctaag gtgtatggag 240
ccgatgttgg cccagaatgt ccgccagaac ttcgaattgc tctattcgcg tcgctacaac 300
agcgacaacg tctatatcat ggccgacaag cagaagaacg gcatcaaggc caacttcaag 360
atccgccaca acgtcgagga cggcagcgtg cagctcgccg accactacca gcagaacacc 420
cccatcggcg acggccccgt gctgctgccc gacaaccact acctgagctt ccagtccgtc 480
ctgagcaaag accccaacga gaagcgcgat cacatggtcc tgctggagtt cgtgaccgcc 540
gccgggatca ctctcggcat ggacgagctg tacaacgtgg atggcggtag cggtggcacc 600
ggcagcaagg gcgaggagct gttcaccggg gtggtgccca tcctggtcga gctggacggc 660
gacgtaaacg gccacaagtt cagcgtgtcc ggcgagggcg agggcgatgc cacctacggc 720
aagctgaccc tgaagctgat ctgcaccacc ggcaagctgc ccgtgccctg gcccaccctc 780
gtgaccaccc tcggctacgg cctgaagtgc ttcgcccgct accccgacca catgaagcag 840
cacgacttct tcaagtccgc catgcccgaa ggctacgtcc aggagcgcac catcttcttc 900
aaggacgacg gcaactacaa gacccgcgcc gaggtgaagt tcgagggcga caccctggtg 960
aaccgcatcg agctgaaggg catcgacttc aaggaggacg gcaacatcct ggggcacaag 1020
ctggagtaca acgtgctgcc gctggtgagt agtcaccgca cccgcatatt tgaagcgatt 1080
atggccggta agccggaaga agcgcgcgaa gcatcgcatc gccatctggc ctttatcgaa 1140
gaaattttgc tcgacagaag tcgtgaagag agccgccgtg agcgttctct gcgtcgtctg 1200
gagcaacgaa agaattaa 1218
Claims (10)
1.一种光学探针,包含丙酮酸敏感多肽和光学活性多肽,其中光学活性多肽位于丙酮酸敏感多肽的序列内。
2.如权利要求1所述的光学探针,其中,丙酮酸敏感多肽具有SEQ ID NO:1所示的序列或其功能片段,或与其有35%、40%、50%、60%、70%、80%、85%、90%、95%、99%序列相同性的序列,优选地,丙酮酸敏感多肽具有SEQ ID NO:1所示序列的第96-254位氨基酸,或与其有35%、40%、50%、60%、70%、80%、85%、90%、95%、99%序列相同性的序列。
3.如权利要求1或2所述的光学探针,其中,光学活性多肽位于丙酮酸敏感多肽的选自以下的位置中:残基117-121、140-143、160-164、174-176、191-195和/或210-214,
优选地,光学活性多肽位于丙酮酸敏感多肽的选自以下的位点:117/118,117/119,117/120,117/121,118/119,118/120,118/121,119/120,119/121,120/121,140/141,140/142,140/143,141/142,141/143,142/143,160/161,160/162,160/163,160/164,161/162,161/163,161/164,162/163,162/164,163/164,174/175,174/176,175/176,191/192,191/193,191/194,191/195,192/193,192/194,192/195,193/194,193/195,194/195,210/211,210/212,210/213,210/214,211/212,211/213,211/214,212/213,212/214和/或213/214,
优选地,所述丙酮酸敏感多肽包含选自下述一个或多个位点处的突变:Q138,S190,R191,R192,E193,M194,L195。
4.如权利要求3所述的光学探针,其中,光学活性多肽位于丙酮酸敏感多肽的选自以下的位置中:残基117-121、140-143、191-195和210-214。
5.一种核酸序列,选自
(1)编码权利要求1-4中任一项所述的光学探针的多核苷酸;
(2)(1)的片段;
(3)(1)或(2)的互补序列。
6.一种核酸构建物,其包含权利要求5所述的核酸序列,优选地,所述核酸构建物是表达载体。
7.一种宿主细胞,所述宿主细胞
(1)表达权利要求1-4中任一项所述的光学探针;
(2)包含权利要求5所述的核酸序列;或
(3)包含权利要求6所述的核酸构建物。
8.一种制备权利要求1-4中任一项所述的光学探针的方法,包括培养权利要求7所述的宿主细胞,和由培养物分离所述光学探针。
9.权利要求1-4中任一项所述的光学探针、权利要求5所述的核酸序列或权利要求6所述的核酸构建物在检测样品中的丙酮酸或筛选化合物中的应用,优选地,所述检测是丙酮酸定位或定量检测。
10.一种检测试剂盒,其包含
(1)权利要求1-4中任一项所述的光学探针或权利要求8所述方法制备的光学探针;
(2)权利要求5所述的核酸序列;
(3)权利要求6所述的核酸构建物;或
(4)权利要求7所述的细胞;和
任选的利用光学探针检测丙酮酸所需的其他试剂。
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WO2024109819A1 (zh) * | 2022-11-22 | 2024-05-30 | 华东理工大学 | 一种磷酸烯醇式丙酮酸光学探针及其制备方法和应用 |
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