CN109738645A - 一种检测盐酸克伦特罗含量的非竞争法酶联免疫分析方法 - Google Patents

一种检测盐酸克伦特罗含量的非竞争法酶联免疫分析方法 Download PDF

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CN109738645A
CN109738645A CN201811597037.1A CN201811597037A CN109738645A CN 109738645 A CN109738645 A CN 109738645A CN 201811597037 A CN201811597037 A CN 201811597037A CN 109738645 A CN109738645 A CN 109738645A
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CN109738645B (zh
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董金华
董航
单喜军
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Shandong Kuanhe Zheng Biomedical Co Ltd
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Shandong Kuanhe Zheng Biomedical Co Ltd
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Abstract

本发明公开了一种检测盐酸克伦特罗含量的非竞争法酶联免疫分析方法,分别调制抗体的轻链可变区或轻链可变区与其他蛋白的融合蛋白质、重链可变区或重链可变区与噬菌体的融合体、或重链可变区与酶的融合蛋白,利用抗体的轻链可变区和重链可变区同时作用盐酸克伦特罗形成稳定复合体的原理,对盐酸克伦特罗进行检测;本发明检测盐酸克伦特罗含量的非竞争法酶联免疫分析方法,不需要在酶标板上包被盐酸克伦特罗与牛血清蛋白的偶联物或制备盐酸克仑特罗与酶的偶联物,大大降低了检测成本,具有检测速度快,灵敏度高,准确度高,易于实施,检测成本低等优点。

Description

一种检测盐酸克伦特罗含量的非竞争法酶联免疫分析方法
技术领域
本发明涉及检测盐酸克伦特罗含量技术领域,具体说是一种检测盐酸克伦特罗含量的非竞争法酶联免疫分析方法。
背景技术
盐酸克伦特罗是一种β2受体激动剂,属于拟肾上腺素类药物,能够改善动物体内的代谢途径,促进肌肉特别是骨骼肌中蛋白质的合成,抑制脂肪的合成,从而加快生长速度,但是盐酸克伦特罗摄入过量会引起巨大的不良反应,严重者发生急性中毒、甲亢,甚至心律失调等,因此盐酸克伦特罗的含量需要进行检测,液相色谱法、气相色谱法是常规的检测盐酸克伦特罗含量的检测方法,但是,这类检测方法需要昂贵的设备,很难普及使用,本领域人员为了降低检测成本,采用免疫测定法检测盐酸克伦特罗的含量,在免疫测定方法的开发中,竞争法酶联免疫分析技术是目前比较常用的方法。
竞争法酶联免疫分析技术检测盐酸克伦特罗含量包括盐酸克伦特罗和酶标盐酸克伦特罗竞争与固相抗体结合,因此结合于固相的酶标盐酸克伦特罗的量与受检样品中盐酸克伦特罗的量呈反比,其操作步骤包括:(1)将特异抗体与固相载体连接,形成固相抗体,洗涤。(2)待测管中加受检标本和一定量酶标盐酸克伦特罗的混合溶液,使之与固相抗体反应,如受检标本中无盐酸克伦特罗,则酶标盐酸克伦特罗能顺利地与固相抗体结合;如受检标本中含有盐酸克伦特罗,则与酶标盐酸克伦特罗以同样的机会与固相抗体结合,竞争性地占去了酶标盐酸克伦特罗与固相抗体结合的机会,使酶标盐酸克伦特罗与固相抗体的结合量减少;参考管中只加酶标盐酸克伦特罗,保温后,酶标盐酸克伦特罗与固相抗体的结合可达最充分的量,洗涤。(3)加底物显色:参考管中由于结合的酶标克伦特罗最多,故颜色最深。参考管颜色深度与待测管颜色深度之差,代表受检标本中盐酸克伦特罗的量,待测管颜色越淡,表示标本中盐酸克伦特罗的含量越多。抗原抗体的线性关系来最终确定体系的最终检测目标的浓度。
竞争法酶联免疫分析技术虽然比使用大型仪器的分析方法简便,但是仍然具有较多的操作步骤,由于其原理是利用两种形式的同种抗原(小分子抗原和其与大分子物质连接的小分子抗原)竞争性的与抗体结合,并且其灵敏度和检测范围受抗体亲和力的影响较大,并且检测范围通常在数十至几千ng/ml,检测的浓度范围窄。
竞争法酶联免疫分析技术对盐酸克伦特罗进行检测时,也可在酶标板上包被盐酸克伦特罗与牛血清蛋白的偶联物BSA-CLEN,然后使标本中的游离盐酸克伦特罗与包被的偶联物竞争性地与抗盐酸克伦特罗抗体结合,最后通过测定跟包被偶联物结合的抗体的量来计算标本中盐酸克伦特罗的含量。不管基于以上哪一种检测形式,制备盐酸克伦特罗与酶的偶联物或BSA-CLEN,都需要很高的成本,从而导致竞争法酶联免疫分析的成本也较高。
发明内容
为解决上述问题,本发明的目的是提供一种检测盐酸克伦特罗含量的非竞争法酶联免疫分析方法。
本发明为实现上述目的,通过以下技术方案实现:
一种检测盐酸克伦特罗含量的非竞争法酶联免疫分析方法,分别调制抗体的轻链可变区或轻链可变区与其他蛋白的融合蛋白质、重链可变区或重链可变区与噬菌体的融合体、或重链可变区与酶的融合蛋白,利用抗体的轻链可变区和重链可变区同时作用盐酸克伦特罗形成稳定复合体的原理,对盐酸克伦特罗进行检测;
其中重链可变区的氨基酸序列为:
EVNLVESGGGLVKPGGSLKLSCAASGFTFSSYAMSWVRQTPEKRLEWVATISSGGSYTFYPDSVKGRFTISRDNAKNTLYLQMSSLRSEDTAMYYCASDDYKDYFDYWGQGTTLTV;
轻链可变区的氨基酸序列为:
ENVLTQSPAIMSASPGEKVTMTCSASSSVSYMHWYQQKSNTSPKLWIYDTSKLASGVPGRFSGSGSGNSYSLTISSMEAEDVATYYCFQGSGYPFTFGSGTKLEIKR。
优选的,分别调制抗体的轻链可变区与麦芽糖结合蛋白的融合蛋白质、重链可变区与噬菌体的融合体,利用抗体的轻链可变区和重链可变区同时作用盐酸克伦特罗形成稳定复合体的原理,对盐酸克伦特罗进行检测。
优选的检测盐酸克伦特罗含量的非竞争法酶联免疫分析方法,包括以下步骤:
①构建抗体轻链可变区与麦芽糖结合蛋白的融合蛋白;
抗体轻链可变区与麦芽糖结合蛋白的融合蛋白的基因序列为:
ATGAAAATAAAAACAGGTGCACGCATCCTCGCATTATCCGCATTAACGACGATGATGTTTTCCGCCTCGGCTCTCGCCAAAATCGAAGAAGGTAAACTGGTAATCTGGATTAACGGCGATAAAGGCTATAACGGTCTCGCTGAAGTCGGTAAGAAATTCGAGAAAGATACCGGAATTAAAGTCACCGTTGAGCATCCGGATAAACTGGAAGAGAAATTCCCACAGGTTGCGGCAACTGGCGATGGCCCTGACATTATCTTCTGGGCACACGACCGCTTTGGTGGCTACGCTCAATCTGGCCTGTTGGCTGAAATCACCCCGGACAAAGCGTTCCAGGACAAGCTGTATCCGTTTACCTGGGATGCCGTACGTTACAACGGCAAGCTGATTGCTTACCCGATCGCTGTTGAAGCGTTATCGCTGATTTATAACAAAGATCTGCTGCCGAACCCGCCAAAAACCTGGGAAGAGATCCCGGCGCTGGATAAAGAACTGAAAGCGAAAGGTAAGAGCGCGCTGATGTTCAACCTGCAAGAACCGTACTTCACCTGGCCGCTGATTGCTGCTGACGGGGGTTATGCGTTCAAGTATGAAAACGGCAAGTACGACATTAAAGACGTGGGCGTGGATAACGCTGGCGCGAAAGCGGGTCTGACCTTCCTGGTTGACCTGATTAAAAACAAACACATGAATGCAGACACCGATTACTCCATCGCAGAAGCTGCCTTTAATAAAGGCGAAACAGCGATGACCATCAACGGCCCGTGGGCATGGTCCAACATCGACACCAGCAAAGTGAATTATGGTGTAACGGTACTGCCGACCTTCAAGGGTCAACCATCCAAACCGTTCGTTGGCGTGCTGAGCGCAGGTATTAACGCCGCCAGTCCGAACAAAGAGCTGGCAAAAGAGTTCCTCGAAAACTATCTGCTGACTGATGAAGGTCTGGAAGCGGTTAATAAAGACAAACCGCTGGGTGCCGTAGCGCTGAAGTCTTACGAGGAAGAGTTGGCGAAAGATCCACGTATTGCCGCCACCATGGAAAACGCCCAGAAAGGTGAAATCATGCCGAACATCCCGCAGATGTCCGCTTTCTGGTATGCCGTGCGTACTGCGGTGATCAACGCCGCCAGCGGTCGTCAGACTGTCGATGAAGCCCTGAAAGACGCGCAGACTAATTCGAGCTCGAACAACAACAACAATAACAATAACAACAACCTCGGGATCGAGGGAAGGATTTCAGAATTCGCGTCGACGGAAAATGTGCTCACCCAGTCTCCAGCAATCATGTCTGCATCTCCAGGGGAAAAGGTCACCATGACCTGCAGTGCCAGCTCAAGTGTAAGTTACATGCACTGGTACCAGCAGAAGTCAAACACCTCCCCCAAACTCTGGATTTATGACACATCCAAACTGGCTTCTGGAGTCCCAGGTCGCTTCAGTGGCAGTGGGTCTGGAAACTCTTACTCTCTCACGATCAGCAGCATGGAGGCTGAAGATGTTGCCACTTATTACTGTTTTCAGGGGAGTGGGTACCCATTCACGTTCGGCTCGGGGACAAAGTTGGAAATAAAACGTGCGGCCGCACATCATCATCACCATCACGGGGCCGCAGAACAAAAACTCATCTCAGAAGAGGATCTGAATGGGGCCGCA
②构建抗体重链可变区与噬菌体pIII蛋白的融合体;
抗体重链可变区与噬菌体pIII蛋白的融合体的基因序列为:
ATGAAATACCTATTGCCTACGGCAGCCGCTGGATTGTTATTACTCGCGGCCCAGCCGGCCATGGCCGAGGTGAACCTGGTGGAATCTGGGGGAGGCTTAGTGAAGCCTGGAGGGTCCCTGAAACTCTCCTGTGCAGCCTCTGGATTCACTTTCAGTAGCTATGCCATGTCTTGGGTTCGCCAGACTCCGGAGAAGAGGCTGGAGTGGGTCGCAACCATTAGTAGTGGTGGTAGTTACACCTTCTATCCAGACAGTGTGAAGGGGCGATTCACCATCTCCAGAGACAATGCCAAGAACACCCTGTACCTGCAAATGAGCAGTCTGAGGTCTGAGGACACGGCCATGTATTACTGTGCAAGCGATGATTACAAGGACTACTTTGACTACTGGGGCCAAGGCACCACTCTCACAGTCTCGAGCTCACCGGCGTCGGCCGCACATCATCATCACCATCACGGGGCCGCAGAACAAAAACTCATCTCAGAAGAGGATCTGAATGGGGCCGCATAGACTGTTGAAAGTTGTTTAGCAAAACCTCATACAGAAAATTCATTTACTAACGTCTGGAAAGACGACAAAACTTTAGATCGTTACGCTAACTATGAGGGCTGTCTGTGGAATGCTACAGGCGTTGTGGTTTGTACTGGTGACGAAACTCAGTGTTACGGTACATGGGTTCCTATTGGGCTTGCTATCCCTGAAAATGAGGGTGGTGGCTCTGAGGGTGGCGGTTCTGAGGGTGGCGGTTCTGAGGGTGGCGGTACTAAACCTCCTGAGTACGGTGATACACCTATTCCGGGCTATACTTATATCAACCCTCTCGACGGCACTTATCCGCCTGGTACTGAGCAAAACCCCGCTAATCCTAATCCTTCTCTTGAGGAGTCTCAGCCTCTTAATACTTTCATGTTTCAGAATAATAGGTTCCGAAATAGGCAGGGTGCATTAACTGTTTATACGGGCACTGTTACTCAAGGCACTGACCCCGTTAAAACTTATTACCAGTACACTCCTGTATCATCAAAAGCCATGTATGACGCTTACTGGAACGGTAAATTCAGAGACTGCGCTTTCCATTCTGGCTTTAATGAGGATCCATTCGTTTGTGAATATCAAGGCCAATCGTCTGACCTGCCTCAACCTCCTGTCAATGCTGGCGGCGGCTCTGGTGGTGGTTCTGGTGGCGGCTCTGAGGGTGGCGGCTCTGAGGGTGGCGGTTCTGAGGGTGGCGGCTCTGAGGGTGGCGGTTCCGGTGGCGGCTCCGGTTCCGGTGATTTTGATTATGAAAAAATGGCAAACGCTAATAAGGGGGCTATGACCGAAAATGCCGATGAAAACGCGCTACAGTCTGACGCTAAAGGCAAACTTGATTCTGTCGCTACTGATTACGGTGCTGCTATCGATGGTTTCATTGGTGACGTTTCCGGCCTTGCTAATGGTAATGGTGCTACTGGTGATTTTGCTGGCTCTAATTCCCAAATGGCTCAAGTCGGTGACGGTGATAATTCACCTTTAATGAATAATTTCCGTCAATATTTACCTTCTTTGCCTCAGTCGGTTGAATGTCGCCCTTATGTCTTTGGCGCTGGTAAACCATATGAATTTTCTATTGATTGTGACAAAATAAACTTATTCCGTGGTGTCTTTGCGTTTCTTTTATATGTTGCCACCTTTATGTATGTATTTTCGACGTTTGCTAACATACTGCGTAATAAGGAGTCT;
③在96孔酶标板上包被抗体轻链可变区与麦芽糖结合蛋白的融合蛋白,洗板后加入呈示了抗体重链可变区的噬菌体和不同浓度的盐酸克伦特罗;再次洗板并向酶标板内加入酶标记的抗噬菌体抗体,反应完成后,洗板,加入酶的底物显色,测定吸光度;绘制盐酸克伦特罗浓度与吸光度的标准曲线,利用标准曲线测定样品中盐酸克伦特罗的含量。
优选的,步骤①构建抗体轻链可变区与麦芽糖结合蛋白的融合蛋白的具体操作为:通过执行PCR扩增抗体A2轻链的可变区,PCR反应以A2抗体基因为模板,反应引物为抗体轻链特异引物,引物两端分别附加了SalI和NotI限制酶切点,使用限制酶分别处理扩增的抗体轻链和蛋白表达载体pMAL并纯化,使用T4 DNA连接酶将两者连接,转化大肠杆菌XL10-Gold,过夜培养,执行菌簇PCR,筛选阳性克隆,培养后抽取质粒,并对插入载体的基因进行测序确认。
优选的,步骤②构建抗体重链可变区与噬菌体的融合体的具体操作步骤为:通过执行PCR扩增抗体A2重链可变区基因,PCR反应以A2抗体基因为模板,反应引物为抗体重链特异引物,引物两端分别附加了NcoI和XhoI限制酶切点,使用限制酶分别处理扩增的抗体重链和噬菌体展示载体pDong1OS并纯化,使用T4 DNA连接酶将两者连接,转化大肠杆菌TG-1,培养8~12小时,执行菌簇PCR,筛选阳性克隆,培养后抽取质粒,并对插入载体的基因进行测序确认;
挑单克隆阳性菌落至4mL含有100μg/mL氨苄青霉素的2YT培养基,37℃过夜培养,取1mL过夜培养菌液至100mL的含有同样抗生素的2YT培养液,37℃培养大肠杆菌至OD600约为0.4时,加入辅助噬菌体,37℃下孵育30分钟,离心去除上清,加入100mL新鲜的含有氨苄青霉素(100μg/mL)及卡那霉素(50μg/mL)的2YT培养基,悬浮大肠杆菌细胞,30℃过夜培养,次日,离心培养液分离培养上清和大肠杆菌细胞,取80mL的上清至一个新的容器,加入20mL的PEG/NaCl溶液,冰上放置30分钟后,离心,弃上清,用2mL的PBS溶液将沉淀溶解,作为呈示了抗体重链可变区的噬菌体。
优选的,标记噬菌体抗体的酶为辣根过氧化酶或碱性磷酸酯酶,其中辣根过氧化酶对应的酶底物分别是3,3,5,5-四甲基联苯胺盐酸盐、碱性磷酸酯酶的酶底物为4-硝基苯磷酸二钠盐。
优选的,步骤③中制备标准曲线的具体操作步骤为:在96孔酶标板的孔内加入100μL,5μg/mL抗体轻链可变区与麦芽糖结合蛋白的融合蛋白,在3~5℃下静置,8~12小时后去掉孔内的液体,加入200μL 2%脱脂奶粉溶液,20~30℃下放置两个小时,对酶标板进行封闭;洗板后向微孔内加入100μL含有呈示了抗体重链可变区的噬菌体及各种浓度盐酸克伦特罗溶液,在25℃孵育1小时,去除孔内溶液,用含有0.1%吐温的PBS溶液洗涤酶标板,加入浓度为1μg/mL,标记了酶的抗噬菌体抗体溶液,在25℃下孵育1小时,去除孔内溶液,用含有0.1%吐温的PBS溶液洗板,最后加入酶底物显色,测定孔内溶液的吸收度,制作标准曲线。
进一步优选的,标记噬菌体抗体的酶为辣根过氧化酶或碱性磷酸酯酶,当酶为辣根过氧化酶时,对应的酶底物为3,3,5,5-四甲基联苯胺盐酸盐,测定吸光度时的可见光波长为450nm;当酶为碱性磷酸酯酶时,对应的酶底物为4-硝基苯磷酸二钠盐,测定吸光度时的可见光波长为405nm。
本发明相比现有技术具有以下优点:
本发明检测盐酸克伦特罗含量的非竞争法酶联免疫分析方法,先采用麦芽糖结合蛋白与抗体轻链可变区的基因连接为一个开放阅读框,后通过大肠杆菌来制作融合蛋白;然后构建抗体重链可变区与噬菌体的融合体,可以非竞争性的测定盐酸克伦特罗的浓度,使其检测不受抗体亲和力的影响,能测定的盐酸克伦特罗的浓度比竞争法更广,灵敏度高,操作步骤少;采用本发明检测盐酸克伦特罗含量的非竞争法酶联免疫分析方法,能检测到盐酸克伦特罗的最低量为1ng/ml,灵敏度为1ng/ml,检测范围为1~10000ng/ml,大大提高了盐酸克伦特罗的检测范围。
本发明检测盐酸克伦特罗含量的非竞争法酶联免疫分析方法,不需要在酶标板上包被盐酸克伦特罗与牛血清蛋白的偶联物或制备盐酸克仑特罗与酶的偶联物,大大降低了检测成本,具有检测速度快,灵敏度高,准确度高,易于实施,检测成本低等优点。
附图说明
图1为利用PCR扩增抗体轻链可变区基因的琼脂糖电泳图;
图2为构建的表达抗体轻链可变区载体的结构图;
图3纯化前后蛋白质的电泳结果图;
图4为利用PCR扩增抗体重链可变区基因的琼脂糖电泳图;
图5为构建的呈示抗体重链可变区载体的结构图;
图6为呈示了抗体重链可变区的噬菌体示意图;
图7为检测盐酸克伦特罗含量的非竞争法酶联免疫分析方法的原理示意图;
图8为检测盐酸克伦特罗含量的非竞争法酶联免疫分析方法的标准曲线。
附图标记:
1抗体重链可变区,2噬菌体,3盐酸克伦特罗,4抗体轻链可变区,5麦芽糖结合蛋白。
具体实施方式
本发明的目的是提供一种检测盐酸克伦特罗含量的非竞争法酶联免疫分析方法,通过以下技术方案实现:
一个抗体分子是由两条重链和两条轻链组成,其中重链从氨基末端开始分为可变区(VH)和三个恒定区(CH1,CH2,CH3),而轻链分为可变区(VL)和一个恒定区(CL)。和抗原直接结合的部分为VH和VL这两个区,而其他的几个区决定抗体的种类,传统的免疫检测中,一般都是利用一个抗体分子,而本专利则是只利用抗体的重链可变区和轻链可变区。
分别调制抗体的轻链可变区或轻链可变区与其他蛋白的融合蛋白质、重链可变区或重链可变区与噬菌体的融合体、或重链可变区与酶的融合蛋白,利用抗体的轻链可变区和重链可变区同时作用盐酸克伦特罗形成稳定复合体的原理,对盐酸克伦特罗进行检测;其中可以与抗体轻链可变区融合的蛋白包括牛血清蛋白、血蓝蛋白,可与重链可变区融合的酶包括辣根过氧化酶或碱性磷酸酯酶。其中抗体轻链可变区与相应的蛋白融合的过程采用现有的基因工程技术,将两者的基因链接为一个开放阅读框,然后通过大肠杆菌来制备轻链可变区与牛血清蛋白或血蓝蛋白的融合蛋白;另外可也直接表达抗体的轻链然后纯化来调制抗体的轻链可变区。
抗体重链可变区与噬菌体pIII蛋白的融合体即呈示了抗体重链可变区的噬菌体。
以下结合具体实施例来对本发明作进一步的描述。
实施例
1、抗体轻链可变区与麦芽糖结合蛋白的融合蛋白表达载体的构建
首先,通过执行聚合酶链式反应(PCR)扩增抗体A2轻链的可变区,PCR反应以A2抗体基因为模板,反应引物为抗体轻链特异引物,引物两端分别附加了SalI和NotI限制酶切点,PCR使用的是东洋纺的KOD-Plus-聚合酶,反应条件是94℃30秒,55℃30秒,68℃1分钟,循环30次,反应结束后执行琼脂糖电泳,确认抗体轻链可变区基因的大小,使用限制酶分别处理扩增的抗体轻链和蛋白表达载体pMAL并纯化,使用T4 DNA连接酶将两者连接,转化大肠杆菌XL10-Gold,培养8~12小时,执行菌簇PCR,筛选阳性克隆,培养后抽取质粒,并对插入载体的基因进行测序确认。
抗体轻链特异引物:
正向引物:5‘-TTCGCGTCGACGGAAAATGTGCTCACCCA-3’;
反向引物:5’-TGTGCGGCCGCACGTTTTATTTCCAA-3’。
如图1利用PCR扩增抗体轻链可变区基因的琼脂糖电泳图,M为DNA marker,VL为PCR产物,在约380bp处观察到明显的条带,为抗体轻链可变区基因。
如图2构建的表达抗体轻链可变区载体的结构图,该载体可以表达麦芽糖结合蛋白(Maltose Binding Protein,MBP)与抗体轻链可变区的融合蛋白,经过测序确认,插入的抗体轻链可变区序列无误。
轻链可变区的氨基酸序列为:
ENVLTQSPAIMSASPGEKVTMTCSASSSVSYMHWYQQKSNTSPKLWIYDTSKLASGVPGRFSGSGSGNSYSLTISSMEAEDVATYYCFQGSGYPFTFGSGTKLEIKR
抗体轻链可变区与麦芽糖结合蛋白的融合蛋白的基因序列为:
ATGAAAATAAAAACAGGTGCACGCATCCTCGCATTATCCGCATTAACGACGATGATGTTTTCCGCCTCGGCTCTCGCCAAAATCGAAGAAGGTAAACTGGTAATCTGGATTAACGGCGATAAAGGCTATAACGGTCTCGCTGAAGTCGGTAAGAAATTCGAGAAAGATACCGGAATTAAAGTCACCGTTGAGCATCCGGATAAACTGGAAGAGAAATTCCCACAGGTTGCGGCAACTGGCGATGGCCCTGACATTATCTTCTGGGCACACGACCGCTTTGGTGGCTACGCTCAATCTGGCCTGTTGGCTGAAATCACCCCGGACAAAGCGTTCCAGGACAAGCTGTATCCGTTTACCTGGGATGCCGTACGTTACAACGGCAAGCTGATTGCTTACCCGATCGCTGTTGAAGCGTTATCGCTGATTTATAACAAAGATCTGCTGCCGAACCCGCCAAAAACCTGGGAAGAGATCCCGGCGCTGGATAAAGAACTGAAAGCGAAAGGTAAGAGCGCGCTGATGTTCAACCTGCAAGAACCGTACTTCACCTGGCCGCTGATTGCTGCTGACGGGGGTTATGCGTTCAAGTATGAAAACGGCAAGTACGACATTAAAGACGTGGGCGTGGATAACGCTGGCGCGAAAGCGGGTCTGACCTTCCTGGTTGACCTGATTAAAAACAAACACATGAATGCAGACACCGATTACTCCATCGCAGAAGCTGCCTTTAATAAAGGCGAAACAGCGATGACCATCAACGGCCCGTGGGCATGGTCCAACATCGACACCAGCAAAGTGAATTATGGTGTAACGGTACTGCCGACCTTCAAGGGTCAACCATCCAAACCGTTCGTTGGCGTGCTGAGCGCAGGTATTAACGCCGCCAGTCCGAACAAAGAGCTGGCAAAAGAGTTCCTCGAAAACTATCTGCTGACTGATGAAGGTCTGGAAGCGGTTAATAAAGACAAACCGCTGGGTGCCGTAGCGCTGAAGTCTTACGAGGAAGAGTTGGCGAAAGATCCACGTATTGCCGCCACCATGGAAAACGCCCAGAAAGGTGAAATCATGCCGAACATCCCGCAGATGTCCGCTTTCTGGTATGCCGTGCGTACTGCGGTGATCAACGCCGCCAGCGGTCGTCAGACTGTCGATGAAGCCCTGAAAGACGCGCAGACTAATTCGAGCTCGAACAACAACAACAATAACAATAACAACAACCTCGGGATCGAGGGAAGGATTTCAGAATTCGCGTCGACGGAAAATGTGCTCACCCAGTCTCCAGCAATCATGTCTGCATCTCCAGGGGAAAAGGTCACCATGACCTGCAGTGCCAGCTCAAGTGTAAGTTACATGCACTGGTACCAGCAGAAGTCAAACACCTCCCCCAAACTCTGGATTTATGACACATCCAAACTGGCTTCTGGAGTCCCAGGTCGCTTCAGTGGCAGTGGGTCTGGAAACTCTTACTCTCTCACGATCAGCAGCATGGAGGCTGAAGATGTTGCCACTTATTACTGTTTTCAGGGGAGTGGGTACCCATTCACGTTCGGCTCGGGGACAAAGTTGGAAATAAAACGTGCGGCCGCACATCATCATCACCATCACGGGGCCGCAGAACAAAAACTCATCTCAGAAGAGGATCTGAATGGGGCCGCA;
抗体轻链可变区与麦芽糖结合蛋白的融合蛋白的氨基酸序列为:
MKIKTGARILALSALTTMMFSASALAKIEEGKLVIWINGDKGYNGLAEVGKKFEKDTGIKVTVEHPDKLEEKFPQVAATGDGPDIIFWAHDRFGGYAQSGLLAEITPDKAFQDKLYPFTWDAVRYNGKLIAYPIAVEALSLIYNKDLLPNPPKTWEEIPALDKELKAKGKSALMFNLQEPYFTWPLIAADGGYAFKYENGKYDIKDVGVDNAGAKAGLTFLVDLIKNKHMNADTDYSIAEAAFNKGETAMTINGPWAWSNIDTSKVNYGVTVLPTFKGQPSKPFVGVLSAGINAASPNKELAKEFLENYLLTDEGLEAVNKDKPLGAVALKSYEEELAKDPRIAATMENAQKGEIMPNIPQMSAFWYAVRTAVINAASGRQTVDEALKDAQTNSSSNNNNNNNNNNLGIEGRISEFASTENVLTQSPAIMSASPGEKVTMTCSASSSVSYMHWYQQKSNTSPKLWIYDTSKLASGVPGRFSGSGSGNSYSLTISSMEAEDVATYYCFQGSGYPFTFGSGTKLEIKRAAAHHHHHHGAAEQKLISEEDLNGAA;
2、麦芽糖结合蛋白与抗体轻链可变区融合蛋白的表达与纯化
将构建的抗体轻链可变区与麦芽糖结合蛋白的融合蛋白表达载体转入大肠杆菌BL21(DE3),铺板过夜培养,挑取单克隆接种到4mL LB液体培养基内,37℃预培养过夜,次日取2mL的培养液接种到200mL的含有抗生素氨苄青霉素的LB培养基中进行培养,当600nm的吸光度到0.5左右时,加入终浓度为1mM的蛋白表达诱导物质异丙基-β-D-硫代吡喃半乳糖苷(IPTG)进行诱导,并在28℃继续培养细菌16小时,离心并收集培养上清液,用75%的硫酸铵溶液沉淀蛋白后,用TALON缓冲液溶解,利用TALON树脂对表达的融合蛋白进行纯化,纯化结束后执行电泳,分析纯化蛋白的纯度。
如图3纯化前后蛋白质的电泳结果图,M是标准蛋白质,1为表达诱导前的蛋白质,2和3均为表达诱导后尚未纯化前的总蛋白质,4为纯化后的蛋白质,从图3中可以看出,融合蛋白得以高效表达及高纯度纯化。
3、抗体重链可变区与噬菌体pIII蛋白的融合体的构建
首先通过执行聚合酶链式反应(PCR)扩增抗体A2重链可变区基因,PCR反应以A2抗体基因为模板,反应引物为抗体重链特异引物,在引物两端分别附加了NcoI和XhoI限制酶切点,PCR使用的是东洋纺的KOD-Plus-聚合酶,反应条件为94℃30秒,55℃30秒,68℃1分钟,循环30次,反应结束后执行琼脂糖电泳,确认抗体重链可变区基因的大小,使用限制酶分别处理扩增的抗体重链和噬菌体展示载体pDong1OS并纯化,使用T4 DNA连接酶将两者连接,转化大肠杆菌TG-1,培养8~12小时,执行菌簇PCR,筛选阳性克隆,培养后抽取质粒,并对插入载体的基因进行测序确认;
挑单克隆阳性菌落至4mL含有100μg/mL氨苄青霉素的2YT培养基,37℃过夜培养,取1mL过夜培养菌液至100mL的含有同样抗生素的2YT培养液,37℃培养大肠杆菌至OD600约为0.4时,加入辅助噬菌体,37℃下孵育30分钟,离心去除上清,加入100mL新鲜的含有氨苄青霉素(100μg/mL)及卡那霉素(50μg/mL)的2YT培养基,悬浮大肠杆菌细胞,30℃过夜培养。次日,离心培养液分离培养上清和大肠杆菌细胞,取80mL的上清至一个新的容器,加入20mL的PEG/NaCl溶液,冰上放置30分钟后,离心,弃上清,用2mL的PBS溶液将沉淀溶解,作为呈示了抗体重链可变区的噬菌体;
培养含有pDong1OS-VH(A2)质粒的大肠杆菌,并利用该大肠杆菌制作展示抗体重链可变区的噬菌体用于检测盐酸克伦特罗。
抗体重链特异引物:
正向引物:5’-GCCGGCCATGGCCGAGGTGAACCTGGTGGAA-3’;
反向引物:5’-TGAGCTCGAGACTGTGAGAGTGGT-3’;
图4为利用PCR扩增抗体重链可变区基因的琼脂糖电泳图,M为DNA marker,VH为PCR产物,在约400bp处观察到明显的条带,即为抗体重链可变区基因。
图5为构建的展示抗体重链可变区载体的结构图,该载体可将抗体重链可变区呈示到噬菌体的表面。通过测序确认,插入的抗体重链可变区基因序列无误。
图6为呈示了抗体重链可变区的噬菌体示意图,在噬菌体组装过程中,噬菌体将连有抗体重链可变区的pIII蛋白误认为正常的pIII蛋白,组装到噬菌体内,从而将抗体重链可变区呈示到噬菌体的表面。
重链可变区的氨基酸序列为:
EVNLVESGGGLVKPGGSLKLSCAASGFTFSSYAMSWVRQTPEKRLEWVATISSGGSYTFYPDSVKGRFTISRDNAKNTLYLQMSSLRSEDTAMYYCASDDYKDYFDYWGQGTTLTV;
抗体重链可变区与噬菌体pIII蛋白的融合体的基因序列为:
ATGAAATACCTATTGCCTACGGCAGCCGCTGGATTGTTATTACTCGCGGCCCAGCCGGCCATGGCCGAGGTGAACCTGGTGGAATCTGGGGGAGGCTTAGTGAAGCCTGGAGGGTCCCTGAAACTCTCCTGTGCAGCCTCTGGATTCACTTTCAGTAGCTATGCCATGTCTTGGGTTCGCCAGACTCCGGAGAAGAGGCTGGAGTGGGTCGCAACCATTAGTAGTGGTGGTAGTTACACCTTCTATCCAGACAGTGTGAAGGGGCGATTCACCATCTCCAGAGACAATGCCAAGAACACCCTGTACCTGCAAATGAGCAGTCTGAGGTCTGAGGACACGGCCATGTATTACTGTGCAAGCGATGATTACAAGGACTACTTTGACTACTGGGGCCAAGGCACCACTCTCACAGTCTCGAGCTCACCGGCGTCGGCCGCACATCATCATCACCATCACGGGGCCGCAGAACAAAAACTCATCTCAGAAGAGGATCTGAATGGGGCCGCATAGACTGTTGAAAGTTGTTTAGCAAAACCTCATACAGAAAATTCATTTACTAACGTCTGGAAAGACGACAAAACTTTAGATCGTTACGCTAACTATGAGGGCTGTCTGTGGAATGCTACAGGCGTTGTGGTTTGTACTGGTGACGAAACTCAGTGTTACGGTACATGGGTTCCTATTGGGCTTGCTATCCCTGAAAATGAGGGTGGTGGCTCTGAGGGTGGCGGTTCTGAGGGTGGCGGTTCTGAGGGTGGCGGTACTAAACCTCCTGAGTACGGTGATACACCTATTCCGGGCTATACTTATATCAACCCTCTCGACGGCACTTATCCGCCTGGTACTGAGCAAAACCCCGCTAATCCTAATCCTTCTCTTGAGGAGTCTCAGCCTCTTAATACTTTCATGTTTCAGAATAATAGGTTCCGAAATAGGCAGGGTGCATTAACTGTTTATACGGGCACTGTTACTCAAGGCACTGACCCCGTTAAAACTTATTACCAGTACACTCCTGTATCATCAAAAGCCATGTATGACGCTTACTGGAACGGTAAATTCAGAGACTGCGCTTTCCATTCTGGCTTTAATGAGGATCCATTCGTTTGTGAATATCAAGGCCAATCGTCTGACCTGCCTCAACCTCCTGTCAATGCTGGCGGCGGCTCTGGTGGTGGTTCTGGTGGCGGCTCTGAGGGTGGCGGCTCTGAGGGTGGCGGTTCTGAGGGTGGCGGCTCTGAGGGTGGCGGTTCCGGTGGCGGCTCCGGTTCCGGTGATTTTGATTATGAAAAAATGGCAAACGCTAATAAGGGGGCTATGACCGAAAATGCCGATGAAAACGCGCTACAGTCTGACGCTAAAGGCAAACTTGATTCTGTCGCTACTGATTACGGTGCTGCTATCGATGGTTTCATTGGTGACGTTTCCGGCCTTGCTAATGGTAATGGTGCTACTGGTGATTTTGCTGGCTCTAATTCCCAAATGGCTCAAGTCGGTGACGGTGATAATTCACCTTTAATGAATAATTTCCGTCAATATTTACCTTCTTTGCCTCAGTCGGTTGAATGTCGCCCTTATGTCTTTGGCGCTGGTAAACCATATGAATTTTCTATTGATTGTGACAAAATAAACTTATTCCGTGGTGTCTTTGCGTTTCTTTTATATGTTGCCACCTTTATGTATGTATTTTCGACGTTTGCTAACATACTGCGTAATAAGGAGTCT;
抗体重链可变区与噬菌体pIII蛋白的融合体的蛋白质序列为:
MYTIRSYFKKTVIMKYLLPTAAAGLLLLAAQPAMAEVNLVESGGGLVKPGGSLKLSCAASGFTFSSYAMSWVRQTPEKRLEWVATISSGGSYTFYPDSVKGRFTISRDNAKNTLYLQMSSLRSEDTAMYYCASDDYKDYFDYWGQGTTLTVSSSPASAHHHHHHGAAEQKLISEEDLNGAAETVESCLAKPHTENSFTNVWKDDKTLDRYANYEGCLWNATGVVVCTGDETQCYGTWVPIGLAIPENEGGGSEGGGSEGGGSEGGGTKPPEYGDTPIPGYTYINPLDGTYPPGTEQNPANPNPSLEESQPLNTFMFQNNRFRNRQGALTVYTGTVTQGTDPVKTYYQYTPVSSKAMYDAYWNGKFRDCAFHSGFNEDPFVCEYQGQSSDLPQPPVNAGGGSGGGSGGGSEGGGSEGGGSEGGGSEGGGSGGGSGSGDFDYEKMANANKGAMTENADENALQSDAKGKLDSVATDYGAAIDGFIGDVSGLANGNGATGDFAGSNSQMAQVGDGDNSPLMNNFRQYLPSLPQSVECRPYVFGAGKPYEFSIDCDKINLFRGVFAFLLYVATFMYVFSTFANILRNKES。
4、检测盐酸克伦特罗浓度
检测原理如图7所示,A2抗体的重链可变区和轻链可变区之间的相互作用受盐酸克伦特罗的影响,在没有盐酸克伦特罗存在时,重链可变区和轻链可变区是分开的,当盐酸克伦特罗存在时,两个可变区与盐酸克伦特罗结合,溶液中盐酸克伦特罗的量越多,则会有更多的重链可变区与轻链可变区结合,如果将麦芽糖结合蛋白与抗体轻链可变区融合蛋白固定到酶标板上,之后加入噬菌体展示抗体重链可变区和盐酸克伦特罗,盐酸克伦特罗的浓度越高,则通过盐酸克伦特罗固定到酶标板的噬菌体就越多,此时加入酶标记的抗噬菌体抗体(抗M13单克隆抗体),则结合到的噬菌体的酶越多,加入酶的底物显色,则颜色越深,即盐酸克伦特罗的浓度与溶液的吸光度之间存在曲线关系,因此可以绘制盐酸克伦特罗浓度与吸光度的标准曲线,利用标准曲线测定溶液中盐酸克伦特罗的含量。
在96孔酶标板的孔内加入100μL,5μg/mL麦芽糖结合蛋白与抗体轻链可变区融合蛋白,在3~5℃下静置,8~12小时后去掉孔内的液体,加入200μL 2%脱脂奶粉溶液,20~30℃下放置两个小时,对酶标板进行封闭;洗板后而微孔内加入100μL含有呈示了抗体重链可变区的噬菌体及各种浓度盐酸克伦特罗(0,0.1,1,10,100,1000,10000ng/mL)溶液,在25℃孵育1小时,去除孔内溶液,用含有0.1%吐温的PBS溶液(PBST溶液)洗涤酶标板,加入标记了辣根过氧化酶(HRP)的抗噬菌体抗体溶液(抗M13单克隆抗体)(1μg/mL),25℃孵育1小时,去除孔内溶液,用PBST洗板,最后加入HRP底物3,3,5,5-四甲基联苯胺盐酸盐(TMBZ)溶液显色,测定孔内溶液在450nm可见光的吸收度,制作标准曲线,如图8所示。
辣根过氧化酶(HRP)可以用碱性磷酸酯酶替换,届时对应的酶底物为4-硝基苯磷酸二钠盐,测定吸光度时的可见光波长为405nm,形成的是黄色水溶性反应产物。
图8中的横轴表示盐酸克伦特罗或阴性参照牛血清蛋白(BSA)的浓度,浓度从0到10000ng/mL,纵轴是每个浓度对应酶标孔内溶液的吸光度。当溶液中盐酸克伦特罗的浓度逐渐增加时,溶液的吸光度也在逐渐增加,呈函数对应关系,而作为阴性参照的BSA浓度的增加则不会使溶液的吸光度增加,因此可以根据该曲线来测定样品溶液中所含盐酸克伦特罗的含量。
序列表
<110> 山东宽和正生物医药有限公司
<120> 一种检测盐酸克伦特罗含量的非竞争法酶联免疫分析方法
<130> 20181226A-1
<141> 2018-12-26
<160> 6
<170> SIPOSequenceListing 1.0
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<211> 116
<212> PRT
<213> 小鼠(Mus musculus)
<400> 1
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Ala Thr Ile Ser Ser Gly Gly Ser Tyr Thr Phe Tyr Pro Asp Ser Val
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Lys Gly Arg Phe Thr Ile Ser Arg Asp Asn Ala Lys Asn Thr Leu Tyr
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Leu Gln Met Ser Ser Leu Arg Ser Glu Asp Thr Ala Met Tyr Tyr Cys
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<210> 2
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<213> 小鼠(Mus musculus)
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<210> 3
<211> 1656
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<213> 人工序列(Artificial Sequence)
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Cys Cys Gly Cys Thr Thr Thr Gly Gly Thr Gly Gly Cys Thr Ala Cys
275 280 285
Gly Cys Thr Cys Ala Ala Thr Cys Thr Gly Gly Cys Cys Thr Gly Thr
290 295 300
Thr Gly Gly Cys Thr Gly Ala Ala Ala Thr Cys Ala Cys Cys Cys Cys
305 310 315 320
Gly Gly Ala Cys Ala Ala Ala Gly Cys Gly Thr Thr Cys Cys Ala Gly
325 330 335
Gly Ala Cys Ala Ala Gly Cys Thr Gly Thr Ala Thr Cys Cys Gly Thr
340 345 350
Thr Thr Ala Cys Cys Thr Gly Gly Gly Ala Thr Gly Cys Cys Gly Thr
355 360 365
Ala Cys Gly Thr Thr Ala Cys Ala Ala Cys Gly Gly Cys Ala Ala Gly
370 375 380
Cys Thr Gly Ala Thr Thr Gly Cys Thr Thr Ala Cys Cys Cys Gly Ala
385 390 395 400
Thr Cys Gly Cys Thr Gly Thr Thr Gly Ala Ala Gly Cys Gly Thr Thr
405 410 415
Ala Thr Cys Gly Cys Thr Gly Ala Thr Thr Thr Ala Thr Ala Ala Cys
420 425 430
Ala Ala Ala Gly Ala Thr Cys Thr Gly Cys Thr Gly Cys Cys Gly Ala
435 440 445
Ala Cys Cys Cys Gly Cys Cys Ala Ala Ala Ala Ala Cys Cys Thr Gly
450 455 460
Gly Gly Ala Ala Gly Ala Gly Ala Thr Cys Cys Cys Gly Gly Cys Gly
465 470 475 480
Cys Thr Gly Gly Ala Thr Ala Ala Ala Gly Ala Ala Cys Thr Gly Ala
485 490 495
Ala Ala Gly Cys Gly Ala Ala Ala Gly Gly Thr Ala Ala Gly Ala Gly
500 505 510
Cys Gly Cys Gly Cys Thr Gly Ala Thr Gly Thr Thr Cys Ala Ala Cys
515 520 525
Cys Thr Gly Cys Ala Ala Gly Ala Ala Cys Cys Gly Thr Ala Cys Thr
530 535 540
Thr Cys Ala Cys Cys Thr Gly Gly Cys Cys Gly Cys Thr Gly Ala Thr
545 550 555 560
Thr Gly Cys Thr Gly Cys Thr Gly Ala Cys Gly Gly Gly Gly Gly Thr
565 570 575
Thr Ala Thr Gly Cys Gly Thr Thr Cys Ala Ala Gly Thr Ala Thr Gly
580 585 590
Ala Ala Ala Ala Cys Gly Gly Cys Ala Ala Gly Thr Ala Cys Gly Ala
595 600 605
Cys Ala Thr Thr Ala Ala Ala Gly Ala Cys Gly Thr Gly Gly Gly Cys
610 615 620
Gly Thr Gly Gly Ala Thr Ala Ala Cys Gly Cys Thr Gly Gly Cys Gly
625 630 635 640
Cys Gly Ala Ala Ala Gly Cys Gly Gly Gly Thr Cys Thr Gly Ala Cys
645 650 655
Cys Thr Thr Cys Cys Thr Gly Gly Thr Thr Gly Ala Cys Cys Thr Gly
660 665 670
Ala Thr Thr Ala Ala Ala Ala Ala Cys Ala Ala Ala Cys Ala Cys Ala
675 680 685
Thr Gly Ala Ala Thr Gly Cys Ala Gly Ala Cys Ala Cys Cys Gly Ala
690 695 700
Thr Thr Ala Cys Thr Cys Cys Ala Thr Cys Gly Cys Ala Gly Ala Ala
705 710 715 720
Gly Cys Thr Gly Cys Cys Thr Thr Thr Ala Ala Thr Ala Ala Ala Gly
725 730 735
Gly Cys Gly Ala Ala Ala Cys Ala Gly Cys Gly Ala Thr Gly Ala Cys
740 745 750
Cys Ala Thr Cys Ala Ala Cys Gly Gly Cys Cys Cys Gly Thr Gly Gly
755 760 765
Gly Cys Ala Thr Gly Gly Thr Cys Cys Ala Ala Cys Ala Thr Cys Gly
770 775 780
Ala Cys Ala Cys Cys Ala Gly Cys Ala Ala Ala Gly Thr Gly Ala Ala
785 790 795 800
Thr Thr Ala Thr Gly Gly Thr Gly Thr Ala Ala Cys Gly Gly Thr Ala
805 810 815
Cys Thr Gly Cys Cys Gly Ala Cys Cys Thr Thr Cys Ala Ala Gly Gly
820 825 830
Gly Thr Cys Ala Ala Cys Cys Ala Thr Cys Cys Ala Ala Ala Cys Cys
835 840 845
Gly Thr Thr Cys Gly Thr Thr Gly Gly Cys Gly Thr Gly Cys Thr Gly
850 855 860
Ala Gly Cys Gly Cys Ala Gly Gly Thr Ala Thr Thr Ala Ala Cys Gly
865 870 875 880
Cys Cys Gly Cys Cys Ala Gly Thr Cys Cys Gly Ala Ala Cys Ala Ala
885 890 895
Ala Gly Ala Gly Cys Thr Gly Gly Cys Ala Ala Ala Ala Gly Ala Gly
900 905 910
Thr Thr Cys Cys Thr Cys Gly Ala Ala Ala Ala Cys Thr Ala Thr Cys
915 920 925
Thr Gly Cys Thr Gly Ala Cys Thr Gly Ala Thr Gly Ala Ala Gly Gly
930 935 940
Thr Cys Thr Gly Gly Ala Ala Gly Cys Gly Gly Thr Thr Ala Ala Thr
945 950 955 960
Ala Ala Ala Gly Ala Cys Ala Ala Ala Cys Cys Gly Cys Thr Gly Gly
965 970 975
Gly Thr Gly Cys Cys Gly Thr Ala Gly Cys Gly Cys Thr Gly Ala Ala
980 985 990
Gly Thr Cys Thr Thr Ala Cys Gly Ala Gly Gly Ala Ala Gly Ala Gly
995 1000 1005
Thr Thr Gly Gly Cys Gly Ala Ala Ala Gly Ala Thr Cys Cys Ala Cys
1010 1015 1020
Gly Thr Ala Thr Thr Gly Cys Cys Gly Cys Cys Ala Cys Cys Ala Thr
1025 1030 1035 1040
Gly Gly Ala Ala Ala Ala Cys Gly Cys Cys Cys Ala Gly Ala Ala Ala
1045 1050 1055
Gly Gly Thr Gly Ala Ala Ala Thr Cys Ala Thr Gly Cys Cys Gly Ala
1060 1065 1070
Ala Cys Ala Thr Cys Cys Cys Gly Cys Ala Gly Ala Thr Gly Thr Cys
1075 1080 1085
Cys Gly Cys Thr Thr Thr Cys Thr Gly Gly Thr Ala Thr Gly Cys Cys
1090 1095 1100
Gly Thr Gly Cys Gly Thr Ala Cys Thr Gly Cys Gly Gly Thr Gly Ala
1105 1110 1115 1120
Thr Cys Ala Ala Cys Gly Cys Cys Gly Cys Cys Ala Gly Cys Gly Gly
1125 1130 1135
Thr Cys Gly Thr Cys Ala Gly Ala Cys Thr Gly Thr Cys Gly Ala Thr
1140 1145 1150
Gly Ala Ala Gly Cys Cys Cys Thr Gly Ala Ala Ala Gly Ala Cys Gly
1155 1160 1165
Cys Gly Cys Ala Gly Ala Cys Thr Ala Ala Thr Thr Cys Gly Ala Gly
1170 1175 1180
Cys Thr Cys Gly Ala Ala Cys Ala Ala Cys Ala Ala Cys Ala Ala Cys
1185 1190 1195 1200
Ala Ala Thr Ala Ala Cys Ala Ala Thr Ala Ala Cys Ala Ala Cys Ala
1205 1210 1215
Ala Cys Cys Thr Cys Gly Gly Gly Ala Thr Cys Gly Ala Gly Gly Gly
1220 1225 1230
Ala Ala Gly Gly Ala Thr Thr Thr Cys Ala Gly Ala Ala Thr Thr Cys
1235 1240 1245
Gly Cys Gly Thr Cys Gly Ala Cys Gly Gly Ala Ala Ala Ala Thr Gly
1250 1255 1260
Thr Gly Cys Thr Cys Ala Cys Cys Cys Ala Gly Thr Cys Thr Cys Cys
1265 1270 1275 1280
Ala Gly Cys Ala Ala Thr Cys Ala Thr Gly Thr Cys Thr Gly Cys Ala
1285 1290 1295
Thr Cys Thr Cys Cys Ala Gly Gly Gly Gly Ala Ala Ala Ala Gly Gly
1300 1305 1310
Thr Cys Ala Cys Cys Ala Thr Gly Ala Cys Cys Thr Gly Cys Ala Gly
1315 1320 1325
Thr Gly Cys Cys Ala Gly Cys Thr Cys Ala Ala Gly Thr Gly Thr Ala
1330 1335 1340
Ala Gly Thr Thr Ala Cys Ala Thr Gly Cys Ala Cys Thr Gly Gly Thr
1345 1350 1355 1360
Ala Cys Cys Ala Gly Cys Ala Gly Ala Ala Gly Thr Cys Ala Ala Ala
1365 1370 1375
Cys Ala Cys Cys Thr Cys Cys Cys Cys Cys Ala Ala Ala Cys Thr Cys
1380 1385 1390
Thr Gly Gly Ala Thr Thr Thr Ala Thr Gly Ala Cys Ala Cys Ala Thr
1395 1400 1405
Cys Cys Ala Ala Ala Cys Thr Gly Gly Cys Thr Thr Cys Thr Gly Gly
1410 1415 1420
Ala Gly Thr Cys Cys Cys Ala Gly Gly Thr Cys Gly Cys Thr Thr Cys
1425 1430 1435 1440
Ala Gly Thr Gly Gly Cys Ala Gly Thr Gly Gly Gly Thr Cys Thr Gly
1445 1450 1455
Gly Ala Ala Ala Cys Thr Cys Thr Thr Ala Cys Thr Cys Thr Cys Thr
1460 1465 1470
Cys Ala Cys Gly Ala Thr Cys Ala Gly Cys Ala Gly Cys Ala Thr Gly
1475 1480 1485
Gly Ala Gly Gly Cys Thr Gly Ala Ala Gly Ala Thr Gly Thr Thr Gly
1490 1495 1500
Cys Cys Ala Cys Thr Thr Ala Thr Thr Ala Cys Thr Gly Thr Thr Thr
1505 1510 1515 1520
Thr Cys Ala Gly Gly Gly Gly Ala Gly Thr Gly Gly Gly Thr Ala Cys
1525 1530 1535
Cys Cys Ala Thr Thr Cys Ala Cys Gly Thr Thr Cys Gly Gly Cys Thr
1540 1545 1550
Cys Gly Gly Gly Gly Ala Cys Ala Ala Ala Gly Thr Thr Gly Gly Ala
1555 1560 1565
Ala Ala Thr Ala Ala Ala Ala Cys Gly Thr Gly Cys Gly Gly Cys Cys
1570 1575 1580
Gly Cys Ala Cys Ala Thr Cys Ala Thr Cys Ala Thr Cys Ala Cys Cys
1585 1590 1595 1600
Ala Thr Cys Ala Cys Gly Gly Gly Gly Cys Cys Gly Cys Ala Gly Ala
1605 1610 1615
Ala Cys Ala Ala Ala Ala Ala Cys Thr Cys Ala Thr Cys Thr Cys Ala
1620 1625 1630
Gly Ala Ala Gly Ala Gly Gly Ala Thr Cys Thr Gly Ala Ala Thr Gly
1635 1640 1645
Gly Gly Gly Cys Cys Gly Cys Ala
1650 1655
<210> 4
<211> 1722
<212> PRT
<213> 人工序列(Artificial Sequence)
<400> 4
Ala Thr Gly Ala Ala Ala Thr Ala Cys Cys Thr Ala Thr Thr Gly Cys
1 5 10 15
Cys Thr Ala Cys Gly Gly Cys Ala Gly Cys Cys Gly Cys Thr Gly Gly
20 25 30
Ala Thr Thr Gly Thr Thr Ala Thr Thr Ala Cys Thr Cys Gly Cys Gly
35 40 45
Gly Cys Cys Cys Ala Gly Cys Cys Gly Gly Cys Cys Ala Thr Gly Gly
50 55 60
Cys Cys Gly Ala Gly Gly Thr Gly Ala Ala Cys Cys Thr Gly Gly Thr
65 70 75 80
Gly Gly Ala Ala Thr Cys Thr Gly Gly Gly Gly Gly Ala Gly Gly Cys
85 90 95
Thr Thr Ala Gly Thr Gly Ala Ala Gly Cys Cys Thr Gly Gly Ala Gly
100 105 110
Gly Gly Thr Cys Cys Cys Thr Gly Ala Ala Ala Cys Thr Cys Thr Cys
115 120 125
Cys Thr Gly Thr Gly Cys Ala Gly Cys Cys Thr Cys Thr Gly Gly Ala
130 135 140
Thr Thr Cys Ala Cys Thr Thr Thr Cys Ala Gly Thr Ala Gly Cys Thr
145 150 155 160
Ala Thr Gly Cys Cys Ala Thr Gly Thr Cys Thr Thr Gly Gly Gly Thr
165 170 175
Thr Cys Gly Cys Cys Ala Gly Ala Cys Thr Cys Cys Gly Gly Ala Gly
180 185 190
Ala Ala Gly Ala Gly Gly Cys Thr Gly Gly Ala Gly Thr Gly Gly Gly
195 200 205
Thr Cys Gly Cys Ala Ala Cys Cys Ala Thr Thr Ala Gly Thr Ala Gly
210 215 220
Thr Gly Gly Thr Gly Gly Thr Ala Gly Thr Thr Ala Cys Ala Cys Cys
225 230 235 240
Thr Thr Cys Thr Ala Thr Cys Cys Ala Gly Ala Cys Ala Gly Thr Gly
245 250 255
Thr Gly Ala Ala Gly Gly Gly Gly Cys Gly Ala Thr Thr Cys Ala Cys
260 265 270
Cys Ala Thr Cys Thr Cys Cys Ala Gly Ala Gly Ala Cys Ala Ala Thr
275 280 285
Gly Cys Cys Ala Ala Gly Ala Ala Cys Ala Cys Cys Cys Thr Gly Thr
290 295 300
Ala Cys Cys Thr Gly Cys Ala Ala Ala Thr Gly Ala Gly Cys Ala Gly
305 310 315 320
Thr Cys Thr Gly Ala Gly Gly Thr Cys Thr Gly Ala Gly Gly Ala Cys
325 330 335
Ala Cys Gly Gly Cys Cys Ala Thr Gly Thr Ala Thr Thr Ala Cys Thr
340 345 350
Gly Thr Gly Cys Ala Ala Gly Cys Gly Ala Thr Gly Ala Thr Thr Ala
355 360 365
Cys Ala Ala Gly Gly Ala Cys Thr Ala Cys Thr Thr Thr Gly Ala Cys
370 375 380
Thr Ala Cys Thr Gly Gly Gly Gly Cys Cys Ala Ala Gly Gly Cys Ala
385 390 395 400
Cys Cys Ala Cys Thr Cys Thr Cys Ala Cys Ala Gly Thr Cys Thr Cys
405 410 415
Gly Ala Gly Cys Thr Cys Ala Cys Cys Gly Gly Cys Gly Thr Cys Gly
420 425 430
Gly Cys Cys Gly Cys Ala Cys Ala Thr Cys Ala Thr Cys Ala Thr Cys
435 440 445
Ala Cys Cys Ala Thr Cys Ala Cys Gly Gly Gly Gly Cys Cys Gly Cys
450 455 460
Ala Gly Ala Ala Cys Ala Ala Ala Ala Ala Cys Thr Cys Ala Thr Cys
465 470 475 480
Thr Cys Ala Gly Ala Ala Gly Ala Gly Gly Ala Thr Cys Thr Gly Ala
485 490 495
Ala Thr Gly Gly Gly Gly Cys Cys Gly Cys Ala Thr Ala Gly Ala Cys
500 505 510
Thr Gly Thr Thr Gly Ala Ala Ala Gly Thr Thr Gly Thr Thr Thr Ala
515 520 525
Gly Cys Ala Ala Ala Ala Cys Cys Thr Cys Ala Thr Ala Cys Ala Gly
530 535 540
Ala Ala Ala Ala Thr Thr Cys Ala Thr Thr Thr Ala Cys Thr Ala Ala
545 550 555 560
Cys Gly Thr Cys Thr Gly Gly Ala Ala Ala Gly Ala Cys Gly Ala Cys
565 570 575
Ala Ala Ala Ala Cys Thr Thr Thr Ala Gly Ala Thr Cys Gly Thr Thr
580 585 590
Ala Cys Gly Cys Thr Ala Ala Cys Thr Ala Thr Gly Ala Gly Gly Gly
595 600 605
Cys Thr Gly Thr Cys Thr Gly Thr Gly Gly Ala Ala Thr Gly Cys Thr
610 615 620
Ala Cys Ala Gly Gly Cys Gly Thr Thr Gly Thr Gly Gly Thr Thr Thr
625 630 635 640
Gly Thr Ala Cys Thr Gly Gly Thr Gly Ala Cys Gly Ala Ala Ala Cys
645 650 655
Thr Cys Ala Gly Thr Gly Thr Thr Ala Cys Gly Gly Thr Ala Cys Ala
660 665 670
Thr Gly Gly Gly Thr Thr Cys Cys Thr Ala Thr Thr Gly Gly Gly Cys
675 680 685
Thr Thr Gly Cys Thr Ala Thr Cys Cys Cys Thr Gly Ala Ala Ala Ala
690 695 700
Thr Gly Ala Gly Gly Gly Thr Gly Gly Thr Gly Gly Cys Thr Cys Thr
705 710 715 720
Gly Ala Gly Gly Gly Thr Gly Gly Cys Gly Gly Thr Thr Cys Thr Gly
725 730 735
Ala Gly Gly Gly Thr Gly Gly Cys Gly Gly Thr Thr Cys Thr Gly Ala
740 745 750
Gly Gly Gly Thr Gly Gly Cys Gly Gly Thr Ala Cys Thr Ala Ala Ala
755 760 765
Cys Cys Thr Cys Cys Thr Gly Ala Gly Thr Ala Cys Gly Gly Thr Gly
770 775 780
Ala Thr Ala Cys Ala Cys Cys Thr Ala Thr Thr Cys Cys Gly Gly Gly
785 790 795 800
Cys Thr Ala Thr Ala Cys Thr Thr Ala Thr Ala Thr Cys Ala Ala Cys
805 810 815
Cys Cys Thr Cys Thr Cys Gly Ala Cys Gly Gly Cys Ala Cys Thr Thr
820 825 830
Ala Thr Cys Cys Gly Cys Cys Thr Gly Gly Thr Ala Cys Thr Gly Ala
835 840 845
Gly Cys Ala Ala Ala Ala Cys Cys Cys Cys Gly Cys Thr Ala Ala Thr
850 855 860
Cys Cys Thr Ala Ala Thr Cys Cys Thr Thr Cys Thr Cys Thr Thr Gly
865 870 875 880
Ala Gly Gly Ala Gly Thr Cys Thr Cys Ala Gly Cys Cys Thr Cys Thr
885 890 895
Thr Ala Ala Thr Ala Cys Thr Thr Thr Cys Ala Thr Gly Thr Thr Thr
900 905 910
Cys Ala Gly Ala Ala Thr Ala Ala Thr Ala Gly Gly Thr Thr Cys Cys
915 920 925
Gly Ala Ala Ala Thr Ala Gly Gly Cys Ala Gly Gly Gly Thr Gly Cys
930 935 940
Ala Thr Thr Ala Ala Cys Thr Gly Thr Thr Thr Ala Thr Ala Cys Gly
945 950 955 960
Gly Gly Cys Ala Cys Thr Gly Thr Thr Ala Cys Thr Cys Ala Ala Gly
965 970 975
Gly Cys Ala Cys Thr Gly Ala Cys Cys Cys Cys Gly Thr Thr Ala Ala
980 985 990
Ala Ala Cys Thr Thr Ala Thr Thr Ala Cys Cys Ala Gly Thr Ala Cys
995 1000 1005
Ala Cys Thr Cys Cys Thr Gly Thr Ala Thr Cys Ala Thr Cys Ala Ala
1010 1015 1020
Ala Ala Gly Cys Cys Ala Thr Gly Thr Ala Thr Gly Ala Cys Gly Cys
1025 1030 1035 1040
Thr Thr Ala Cys Thr Gly Gly Ala Ala Cys Gly Gly Thr Ala Ala Ala
1045 1050 1055
Thr Thr Cys Ala Gly Ala Gly Ala Cys Thr Gly Cys Gly Cys Thr Thr
1060 1065 1070
Thr Cys Cys Ala Thr Thr Cys Thr Gly Gly Cys Thr Thr Thr Ala Ala
1075 1080 1085
Thr Gly Ala Gly Gly Ala Thr Cys Cys Ala Thr Thr Cys Gly Thr Thr
1090 1095 1100
Thr Gly Thr Gly Ala Ala Thr Ala Thr Cys Ala Ala Gly Gly Cys Cys
1105 1110 1115 1120
Ala Ala Thr Cys Gly Thr Cys Thr Gly Ala Cys Cys Thr Gly Cys Cys
1125 1130 1135
Thr Cys Ala Ala Cys Cys Thr Cys Cys Thr Gly Thr Cys Ala Ala Thr
1140 1145 1150
Gly Cys Thr Gly Gly Cys Gly Gly Cys Gly Gly Cys Thr Cys Thr Gly
1155 1160 1165
Gly Thr Gly Gly Thr Gly Gly Thr Thr Cys Thr Gly Gly Thr Gly Gly
1170 1175 1180
Cys Gly Gly Cys Thr Cys Thr Gly Ala Gly Gly Gly Thr Gly Gly Cys
1185 1190 1195 1200
Gly Gly Cys Thr Cys Thr Gly Ala Gly Gly Gly Thr Gly Gly Cys Gly
1205 1210 1215
Gly Thr Thr Cys Thr Gly Ala Gly Gly Gly Thr Gly Gly Cys Gly Gly
1220 1225 1230
Cys Thr Cys Thr Gly Ala Gly Gly Gly Thr Gly Gly Cys Gly Gly Thr
1235 1240 1245
Thr Cys Cys Gly Gly Thr Gly Gly Cys Gly Gly Cys Thr Cys Cys Gly
1250 1255 1260
Gly Thr Thr Cys Cys Gly Gly Thr Gly Ala Thr Thr Thr Thr Gly Ala
1265 1270 1275 1280
Thr Thr Ala Thr Gly Ala Ala Ala Ala Ala Ala Thr Gly Gly Cys Ala
1285 1290 1295
Ala Ala Cys Gly Cys Thr Ala Ala Thr Ala Ala Gly Gly Gly Gly Gly
1300 1305 1310
Cys Thr Ala Thr Gly Ala Cys Cys Gly Ala Ala Ala Ala Thr Gly Cys
1315 1320 1325
Cys Gly Ala Thr Gly Ala Ala Ala Ala Cys Gly Cys Gly Cys Thr Ala
1330 1335 1340
Cys Ala Gly Thr Cys Thr Gly Ala Cys Gly Cys Thr Ala Ala Ala Gly
1345 1350 1355 1360
Gly Cys Ala Ala Ala Cys Thr Thr Gly Ala Thr Thr Cys Thr Gly Thr
1365 1370 1375
Cys Gly Cys Thr Ala Cys Thr Gly Ala Thr Thr Ala Cys Gly Gly Thr
1380 1385 1390
Gly Cys Thr Gly Cys Thr Ala Thr Cys Gly Ala Thr Gly Gly Thr Thr
1395 1400 1405
Thr Cys Ala Thr Thr Gly Gly Thr Gly Ala Cys Gly Thr Thr Thr Cys
1410 1415 1420
Cys Gly Gly Cys Cys Thr Thr Gly Cys Thr Ala Ala Thr Gly Gly Thr
1425 1430 1435 1440
Ala Ala Thr Gly Gly Thr Gly Cys Thr Ala Cys Thr Gly Gly Thr Gly
1445 1450 1455
Ala Thr Thr Thr Thr Gly Cys Thr Gly Gly Cys Thr Cys Thr Ala Ala
1460 1465 1470
Thr Thr Cys Cys Cys Ala Ala Ala Thr Gly Gly Cys Thr Cys Ala Ala
1475 1480 1485
Gly Thr Cys Gly Gly Thr Gly Ala Cys Gly Gly Thr Gly Ala Thr Ala
1490 1495 1500
Ala Thr Thr Cys Ala Cys Cys Thr Thr Thr Ala Ala Thr Gly Ala Ala
1505 1510 1515 1520
Thr Ala Ala Thr Thr Thr Cys Cys Gly Thr Cys Ala Ala Thr Ala Thr
1525 1530 1535
Thr Thr Ala Cys Cys Thr Thr Cys Thr Thr Thr Gly Cys Cys Thr Cys
1540 1545 1550
Ala Gly Thr Cys Gly Gly Thr Thr Gly Ala Ala Thr Gly Thr Cys Gly
1555 1560 1565
Cys Cys Cys Thr Thr Ala Thr Gly Thr Cys Thr Thr Thr Gly Gly Cys
1570 1575 1580
Gly Cys Thr Gly Gly Thr Ala Ala Ala Cys Cys Ala Thr Ala Thr Gly
1585 1590 1595 1600
Ala Ala Thr Thr Thr Thr Cys Thr Ala Thr Thr Gly Ala Thr Thr Gly
1605 1610 1615
Thr Gly Ala Cys Ala Ala Ala Ala Thr Ala Ala Ala Cys Thr Thr Ala
1620 1625 1630
Thr Thr Cys Cys Gly Thr Gly Gly Thr Gly Thr Cys Thr Thr Thr Gly
1635 1640 1645
Cys Gly Thr Thr Thr Cys Thr Thr Thr Thr Ala Thr Ala Thr Gly Thr
1650 1655 1660
Thr Gly Cys Cys Ala Cys Cys Thr Thr Thr Ala Thr Gly Thr Ala Thr
1665 1670 1675 1680
Gly Thr Ala Thr Thr Thr Thr Cys Gly Ala Cys Gly Thr Thr Thr Gly
1685 1690 1695
Cys Thr Ala Ala Cys Ala Thr Ala Cys Thr Gly Cys Gly Thr Ala Ala
1700 1705 1710
Thr Ala Ala Gly Gly Ala Gly Thr Cys Thr
1715 1720
<210> 5
<211> 552
<212> PRT
<213> 人工序列(Artificial Sequence)
<400> 5
Met Lys Ile Lys Thr Gly Ala Arg Ile Leu Ala Leu Ser Ala Leu Thr
1 5 10 15
Thr Met Met Phe Ser Ala Ser Ala Leu Ala Lys Ile Glu Glu Gly Lys
20 25 30
Leu Val Ile Trp Ile Asn Gly Asp Lys Gly Tyr Asn Gly Leu Ala Glu
35 40 45
Val Gly Lys Lys Phe Glu Lys Asp Thr Gly Ile Lys Val Thr Val Glu
50 55 60
His Pro Asp Lys Leu Glu Glu Lys Phe Pro Gln Val Ala Ala Thr Gly
65 70 75 80
Asp Gly Pro Asp Ile Ile Phe Trp Ala His Asp Arg Phe Gly Gly Tyr
85 90 95
Ala Gln Ser Gly Leu Leu Ala Glu Ile Thr Pro Asp Lys Ala Phe Gln
100 105 110
Asp Lys Leu Tyr Pro Phe Thr Trp Asp Ala Val Arg Tyr Asn Gly Lys
115 120 125
Leu Ile Ala Tyr Pro Ile Ala Val Glu Ala Leu Ser Leu Ile Tyr Asn
130 135 140
Lys Asp Leu Leu Pro Asn Pro Pro Lys Thr Trp Glu Glu Ile Pro Ala
145 150 155 160
Leu Asp Lys Glu Leu Lys Ala Lys Gly Lys Ser Ala Leu Met Phe Asn
165 170 175
Leu Gln Glu Pro Tyr Phe Thr Trp Pro Leu Ile Ala Ala Asp Gly Gly
180 185 190
Tyr Ala Phe Lys Tyr Glu Asn Gly Lys Tyr Asp Ile Lys Asp Val Gly
195 200 205
Val Asp Asn Ala Gly Ala Lys Ala Gly Leu Thr Phe Leu Val Asp Leu
210 215 220
Ile Lys Asn Lys His Met Asn Ala Asp Thr Asp Tyr Ser Ile Ala Glu
225 230 235 240
Ala Ala Phe Asn Lys Gly Glu Thr Ala Met Thr Ile Asn Gly Pro Trp
245 250 255
Ala Trp Ser Asn Ile Asp Thr Ser Lys Val Asn Tyr Gly Val Thr Val
260 265 270
Leu Pro Thr Phe Lys Gly Gln Pro Ser Lys Pro Phe Val Gly Val Leu
275 280 285
Ser Ala Gly Ile Asn Ala Ala Ser Pro Asn Lys Glu Leu Ala Lys Glu
290 295 300
Phe Leu Glu Asn Tyr Leu Leu Thr Asp Glu Gly Leu Glu Ala Val Asn
305 310 315 320
Lys Asp Lys Pro Leu Gly Ala Val Ala Leu Lys Ser Tyr Glu Glu Glu
325 330 335
Leu Ala Lys Asp Pro Arg Ile Ala Ala Thr Met Glu Asn Ala Gln Lys
340 345 350
Gly Glu Ile Met Pro Asn Ile Pro Gln Met Ser Ala Phe Trp Tyr Ala
355 360 365
Val Arg Thr Ala Val Ile Asn Ala Ala Ser Gly Arg Gln Thr Val Asp
370 375 380
Glu Ala Leu Lys Asp Ala Gln Thr Asn Ser Ser Ser Asn Asn Asn Asn
385 390 395 400
Asn Asn Asn Asn Asn Asn Leu Gly Ile Glu Gly Arg Ile Ser Glu Phe
405 410 415
Ala Ser Thr Glu Asn Val Leu Thr Gln Ser Pro Ala Ile Met Ser Ala
420 425 430
Ser Pro Gly Glu Lys Val Thr Met Thr Cys Ser Ala Ser Ser Ser Val
435 440 445
Ser Tyr Met His Trp Tyr Gln Gln Lys Ser Asn Thr Ser Pro Lys Leu
450 455 460
Trp Ile Tyr Asp Thr Ser Lys Leu Ala Ser Gly Val Pro Gly Arg Phe
465 470 475 480
Ser Gly Ser Gly Ser Gly Asn Ser Tyr Ser Leu Thr Ile Ser Ser Met
485 490 495
Glu Ala Glu Asp Val Ala Thr Tyr Tyr Cys Phe Gln Gly Ser Gly Tyr
500 505 510
Pro Phe Thr Phe Gly Ser Gly Thr Lys Leu Glu Ile Lys Arg Ala Ala
515 520 525
Ala His His His His His His Gly Ala Ala Glu Gln Lys Leu Ile Ser
530 535 540
Glu Glu Asp Leu Asn Gly Ala Ala
545 550
<210> 6
<211> 586
<212> PRT
<213> 人工序列(Artificial Sequence)
<400> 6
Met Tyr Thr Ile Arg Ser Tyr Phe Lys Lys Thr Val Ile Met Lys Tyr
1 5 10 15
Leu Leu Pro Thr Ala Ala Ala Gly Leu Leu Leu Leu Ala Ala Gln Pro
20 25 30
Ala Met Ala Glu Val Asn Leu Val Glu Ser Gly Gly Gly Leu Val Lys
35 40 45
Pro Gly Gly Ser Leu Lys Leu Ser Cys Ala Ala Ser Gly Phe Thr Phe
50 55 60
Ser Ser Tyr Ala Met Ser Trp Val Arg Gln Thr Pro Glu Lys Arg Leu
65 70 75 80
Glu Trp Val Ala Thr Ile Ser Ser Gly Gly Ser Tyr Thr Phe Tyr Pro
85 90 95
Asp Ser Val Lys Gly Arg Phe Thr Ile Ser Arg Asp Asn Ala Lys Asn
100 105 110
Thr Leu Tyr Leu Gln Met Ser Ser Leu Arg Ser Glu Asp Thr Ala Met
115 120 125
Tyr Tyr Cys Ala Ser Asp Asp Tyr Lys Asp Tyr Phe Asp Tyr Trp Gly
130 135 140
Gln Gly Thr Thr Leu Thr Val Ser Ser Ser Pro Ala Ser Ala His His
145 150 155 160
His His His His Gly Ala Ala Glu Gln Lys Leu Ile Ser Glu Glu Asp
165 170 175
Leu Asn Gly Ala Ala Glu Thr Val Glu Ser Cys Leu Ala Lys Pro His
180 185 190
Thr Glu Asn Ser Phe Thr Asn Val Trp Lys Asp Asp Lys Thr Leu Asp
195 200 205
Arg Tyr Ala Asn Tyr Glu Gly Cys Leu Trp Asn Ala Thr Gly Val Val
210 215 220
Val Cys Thr Gly Asp Glu Thr Gln Cys Tyr Gly Thr Trp Val Pro Ile
225 230 235 240
Gly Leu Ala Ile Pro Glu Asn Glu Gly Gly Gly Ser Glu Gly Gly Gly
245 250 255
Ser Glu Gly Gly Gly Ser Glu Gly Gly Gly Thr Lys Pro Pro Glu Tyr
260 265 270
Gly Asp Thr Pro Ile Pro Gly Tyr Thr Tyr Ile Asn Pro Leu Asp Gly
275 280 285
Thr Tyr Pro Pro Gly Thr Glu Gln Asn Pro Ala Asn Pro Asn Pro Ser
290 295 300
Leu Glu Glu Ser Gln Pro Leu Asn Thr Phe Met Phe Gln Asn Asn Arg
305 310 315 320
Phe Arg Asn Arg Gln Gly Ala Leu Thr Val Tyr Thr Gly Thr Val Thr
325 330 335
Gln Gly Thr Asp Pro Val Lys Thr Tyr Tyr Gln Tyr Thr Pro Val Ser
340 345 350
Ser Lys Ala Met Tyr Asp Ala Tyr Trp Asn Gly Lys Phe Arg Asp Cys
355 360 365
Ala Phe His Ser Gly Phe Asn Glu Asp Pro Phe Val Cys Glu Tyr Gln
370 375 380
Gly Gln Ser Ser Asp Leu Pro Gln Pro Pro Val Asn Ala Gly Gly Gly
385 390 395 400
Ser Gly Gly Gly Ser Gly Gly Gly Ser Glu Gly Gly Gly Ser Glu Gly
405 410 415
Gly Gly Ser Glu Gly Gly Gly Ser Glu Gly Gly Gly Ser Gly Gly Gly
420 425 430
Ser Gly Ser Gly Asp Phe Asp Tyr Glu Lys Met Ala Asn Ala Asn Lys
435 440 445
Gly Ala Met Thr Glu Asn Ala Asp Glu Asn Ala Leu Gln Ser Asp Ala
450 455 460
Lys Gly Lys Leu Asp Ser Val Ala Thr Asp Tyr Gly Ala Ala Ile Asp
465 470 475 480
Gly Phe Ile Gly Asp Val Ser Gly Leu Ala Asn Gly Asn Gly Ala Thr
485 490 495
Gly Asp Phe Ala Gly Ser Asn Ser Gln Met Ala Gln Val Gly Asp Gly
500 505 510
Asp Asn Ser Pro Leu Met Asn Asn Phe Arg Gln Tyr Leu Pro Ser Leu
515 520 525
Pro Gln Ser Val Glu Cys Arg Pro Tyr Val Phe Gly Ala Gly Lys Pro
530 535 540
Tyr Glu Phe Ser Ile Asp Cys Asp Lys Ile Asn Leu Phe Arg Gly Val
545 550 555 560
Phe Ala Phe Leu Leu Tyr Val Ala Thr Phe Met Tyr Val Phe Ser Thr
565 570 575
Phe Ala Asn Ile Leu Arg Asn Lys Glu Ser
580 585

Claims (8)

1.一种检测盐酸克伦特罗含量的非竞争法酶联免疫分析方法,其特征在于:分别调制抗体的轻链可变区或轻链可变区与其他蛋白的融合蛋白质、重链可变区或重链可变区与噬菌体的融合体、或重链可变区与酶的融合蛋白,利用抗体的轻链可变区和重链可变区同时作用盐酸克伦特罗形成稳定复合体的原理,对盐酸克伦特罗进行检测;
其中抗体重链可变区的氨基酸序列为:
EVNLVESGGGLVKPGGSLKLSCAASGFTFSSYAMSWVRQTPEKRLEWVATISSGGSYTFYPDSVKGRFTISRDNAKNTLYLQMSSLRSEDTAMYYCASDDYKDYFDYWGQGTTLTV;
抗体轻链可变区的氨基酸序列为:
ENVLTQSPAIMSASPGEKVTMTCSASSSVSYMHWYQQKSNTSPKLWIYDTSKLASGVPGRFSGSGSGNSYSLTISSMEAEDVATYYCFQGSGYPFTFGSGTKLEIKR。
2.一种检测盐酸克伦特罗含量的非竞争法酶联免疫分析方法,其特征在于:分别调制抗体的轻链可变区与麦芽糖结合蛋白的融合蛋白质、重链可变区与噬菌体的融合体,利用抗体的轻链可变区和重链可变区同时作用盐酸克伦特罗形成稳定复合体的原理,对盐酸克伦特罗进行检测。
3.根据权利要求2所述的一种检测盐酸克伦特罗含量的非竞争法酶联免疫分析方法,其特征在于:包括以下步骤:
①构建抗体轻链可变区与麦芽糖结合蛋白的融合蛋白;
抗体轻链可变区与麦芽糖结合蛋白的融合蛋白的基因序列为:
ATGAAAATAAAAACAGGTGCACGCATCCTCGCATTATCCGCATTAACGACGATGATGTTTTCCGCCTCGGCTCTCGCCAAAATCGAAGAAGGTAAACTGGTAATCTGGATTAACGGCGATAAAGGCTATAACGGTCTCGCTGAAGTCGGTAAGAAATTCGAGAAAGATACCGGAATTAAAGTCACCGTTGAGCATCCGGATAAACTGGAAGAGAAATTCCCACAGGTTGCGGCAACTGGCGATGGCCCTGACATTATCTTCTGGGCACACGACCGCTTTGGTGGCTACGCTCAATCTGGCCTGTTGGCTGAAATCACCCCGGACAAAGCGTTCCAGGACAAGCTGTATCCGTTTACCTGGGATGCCGTACGTTACAACGGCAAGCTGATTGCTTACCCGATCGCTGTTGAAGCGTTATCGCTGATTTATAACAAAGATCTGCTGCCGAACCCGCCAAAAACCTGGGAAGAGATCCCGGCGCTGGATAAAGAACTGAAAGCGAAAGGTAAGAGCGCGCTGATGTTCAACCTGCAAGAACCGTACTTCACCTGGCCGCTGATTGCTGCTGACGGGGGTTATGCGTTCAAGTATGAAAACGGCAAGTACGACATTAAAGACGTGGGCGTGGATAACGCTGGCGCGAAAGCGGGTCTGACCTTCCTGGTTGACCTGATTAAAAACAAACACATGAATGCAGACACCGATTACTCCATCGCAGAAGCTGCCTTTAATAAAGGCGAAACAGCGATGACCATCAACGGCCCGTGGGCATGGTCCAACATCGACACCAGCAAAGTGAATTATGGTGTAACGGTACTGCCGACCTTCAAGGGTCAACCATCCAAACCGTTCGTTGGCGTGCTGAGCGCAGGTATTAACGCCGCCAGTCCGAACAAAGAGCTGGCAAAAGAGTTCCTCGAAAACTATCTGCTGACTGATGAAGGTCTGGAAGCGGTTAATAAAGACAAACCGCTGGGTGCCGTAGCGCTGAAGTCTTACGAGGAAGAGTTGGCGAAAGATCCACGTATTGCCGCCACCATGGAAAACGCCCAGAAAGGTGAAATCATGCCGAACATCCCGCAGATGTCCGCTTTCTGGTATGCCGTGCGTACTGCGGTGATCAACGCCGCCAGCGGTCGTCAGACTGTCGATGAAGCCCTGAAAGACGCGCAGACTAATTCGAGCTCGAACAACAACAACAATAACAATAACAACAACCTCGGGATCGAGGGAAGGATTTCAGAATTCGCGTCGACGGAAAATGTGCTCACCCAGTCTCCAGCAATCATGTCTGCATCTCCAGGGGAAAAGGTCACCATGACCTGCAGTGCCAGCTCAAGTGTAAGTTACATGCACTGGTACCAGCAGAAGTCAAACACCTCCCCCAAACTCTGGATTTATGACACATCCAAACTGGCTTCTGGAGTCCCAGGTCGCTTCAGTGGCAGTGGGTCTGGAAACTCTTACTCTCTCACGATCAGCAGCATGGAGGCTGAAGATGTTGCCACTTATTACTGTTTTCAGGGGAGTGGGTACCCATTCACGTTCGGCTCGGGGACAAAGTTGGAAATAAAACGTGCGGCCGCACATCATCATCACCATCACGGGGCCGCAGAACAAAAACTCATCTCAGAAGAGGATCTGAATGGGGCCGCA;
②构建抗体重链可变区与噬菌体pIII蛋白的融合体;
抗体重链可变区与噬菌体pIII蛋白的融合体的基因序列为:
ATGAAATACCTATTGCCTACGGCAGCCGCTGGATTGTTATTACTCGCGGCCCAGCCGGCCATGGCCGAGGTGAACCTGGTGGAATCTGGGGGAGGCTTAGTGAAGCCTGGAGGGTCCCTGAAACTCTCCTGTGCAGCCTCTGGATTCACTTTCAGTAGCTATGCCATGTCTTGGGTTCGCCAGACTCCGGAGAAGAGGCTGGAGTGGGTCGCAACCATTAGTAGTGGTGGTAGTTACACCTTCTATCCAGACAGTGTGAAGGGGCGATTCACCATCTCCAGAGACAATGCCAAGAACACCCTGTACCTGCAAATGAGCAGTCTGAGGTCTGAGGACACGGCCATGTATTACTGTGCAAGCGATGATTACAAGGACTACTTTGACTACTGGGGCCAAGGCACCACTCTCACAGTCTCGAGCTCACCGGCGTCGGCCGCACATCATCATCACCATCACGGGGCCGCAGAACAAAAACTCATCTCAGAAGAGGATCTGAATGGGGCCGCATAGACTGTTGAAAGTTGTTTAGCAAAACCTCATACAGAAAATTCATTTACTAACGTCTGGAAAGACGACAAAACTTTAGATCGTTACGCTAACTATGAGGGCTGTCTGTGGAATGCTACAGGCGTTGTGGTTTGTACTGGTGACGAAACTCAGTGTTACGGTACATGGGTTCCTATTGGGCTTGCTATCCCTGAAAATGAGGGTGGTGGCTCTGAGGGTGGCGGTTCTGAGGGTGGCGGTTCTGAGGGTGGCGGTACTAAACCTCCTGAGTACGGTGATACACCTATTCCGGGCTATACTTATATCAACCCTCTCGACGGCACTTATCCGCCTGGTACTGAGCAAAACCCCGCTAATCCTAATCCTTCTCTTGAGGAGTCTCAGCCTCTTAATACTTTCATGTTTCAGAATAATAGGTTCCGAAATAGGCAGGGTGCATTAACTGTTTATACGGGCACTGTTACTCAAGGCACTGACCCCGTTAAAACTTATTACCAGTACACTCCTGTATCATCAAAAGCCATGTATGACGCTTACTGGAACGGTAAATTCAGAGACTGCGCTTTCCATTCTGGCTTTAATGAGGATCCATTCGTTTGTGAATATCAAGGCCAATCGTCTGACCTGCCTCAACCTCCTGTCAATGCTGGCGGCGGCTCTGGTGGTGGTTCTGGTGGCGGCTCTGAGGGTGGCGGCTCTGAGGGTGGCGGTTCTGAGGGTGGCGGCTCTGAGGGTGGCGGTTCCGGTGGCGGCTCCGGTTCCGGTGATTTTGATTATGAAAAAATGGCAAACGCTAATAAGGGGGCTATGACCGAAAATGCCGATGAAAACGCGCTACAGTCTGACGCTAAAGGCAAACTTGATTCTGTCGCTACTGATTACGGTGCTGCTATCGATGGTTTCATTGGTGACGTTTCCGGCCTTGCTAATGGTAATGGTGCTACTGGTGATTTTGCTGGCTCTAATTCCCAAATGGCTCAAGTCGGTGACGGTGATAATTCACCTTTAATGAATAATTTCCGTCAATATTTACCTTCTTTGCCTCAGTCGGTTGAATGTCGCCCTTATGTCTTTGGCGCTGGTAAACCATATGAATTTTCTATTGATTGTGACAAAATAAACTTATTCCGTGGTGTCTTTGCGTTTCTTTTATATGTTGCCACCTTTATGTATGTATTTTCGACGTTTGCTAACATACTGCGTAATAAGGAGTCT;
③在96孔酶标板上包被抗体轻链可变区与麦芽糖结合蛋白的融合蛋白,洗板后加入呈示了抗体重链可变区的噬菌体和不同浓度的盐酸克伦特罗;再次洗板后并向酶标板内加入酶标记的抗噬菌体抗体,反应完成后,洗板,加入酶的底物显色,测定吸光度;绘制盐酸克伦特罗浓度与吸光度的标准曲线,利用标准曲线测定样品中盐酸克伦特罗的含量。
4.根据权利要求3所述的一种检测盐酸克伦特罗含量的非竞争法酶联免疫分析方法,其特征在于:步骤①构建抗体轻链可变区与麦芽糖结合蛋白的融合蛋白的具体操作为:通过执行PCR扩增抗体A2轻链的可变区,PCR反应以A2抗体基因为模板,反应引物为抗体轻链特异引物,引物两端分别附加了SalI和NotI限制酶切点,使用限制酶分别处理扩增的抗体轻链和蛋白表达载体pMAL并纯化,使用T4DNA连接酶将两者连接,转化大肠杆菌XL10-Gold,过夜培养,执行菌簇PCR,筛选阳性克隆,培养后抽取质粒,并对插入载体的基因进行测序确认。
5.根据权利要求3所述的一种检测盐酸克伦特罗含量的非竞争法酶联免疫分析方法,其特征在于:步骤②构建抗体重链可变区与噬菌体的融合体的具体操作步骤为:通过执行PCR扩增抗体A2重链可变区基因,PCR反应以A2抗体基因为模板,反应引物为抗体重链特异引物,引物两端分别附加了NcoI和XhoI限制酶切点,使用限制酶分别处理扩增的抗体重链和噬菌体展示载体pDong1OS并纯化,使用T4DNA连接酶将两者连接,转化大肠杆菌TG-1,培养8~12小时,执行菌簇PCR,筛选阳性克隆,培养后抽取质粒,并对插入载体的基因进行测序确认;
挑单克隆阳性菌落至4mL含有100μg/mL氨苄青霉素的2YT培养基,37℃过夜培养,取1mL过夜培养菌液至100mL的含有同样抗生素的2YT培养液,37℃培养大肠杆菌至OD600约为0.4时,加入辅助噬菌体,37℃下孵育30分钟,离心去除上清,加入100mL新鲜的含有氨苄青霉素(100μg/mL)及卡那霉素(50μg/mL)的2YT培养基,悬浮大肠杆菌细胞,30℃过夜培养。次日,离心培养液分离培养上清和大肠杆菌细胞,取80mL的上清至一个新的容器,加入20mL的PEG/NaCl溶液,冰上放置30分钟后,离心,弃上清,用2mL的PBS溶液将沉淀溶解,作为呈示了抗体重链可变区的噬菌体。
6.根据权利要求3所述的一种检测盐酸克伦特罗含量的非竞争法酶联免疫分析方法,其特征在于:标记噬菌体抗体的酶为辣根过氧化酶或碱性磷酸酯酶,其中辣根过氧化酶对应的酶底物分别是3,3,5,5-四甲基联苯胺盐酸盐、碱性磷酸酯酶的酶底物为4-硝基苯磷酸二钠盐。
7.根据权利要求3所述的一种检测盐酸克伦特罗含量的非竞争法酶联免疫分析方法,其特征在于:步骤③中制备标准曲线的具体操作步骤为:在96孔酶标板的孔内加入100μL,5μg/mL抗体轻链可变区与麦芽糖结合蛋白的融合蛋白,在3~5℃下静置,8~12小时后去掉孔内的液体,加入200μL 2%脱脂奶粉溶液,20~30℃下放置两个小时,对酶标板进行封闭;洗板后向微孔内加入100μL含有呈示了抗体重链可变区的噬菌体及各种浓度盐酸克伦特罗的溶液,在25℃孵育1小时,去除孔内溶液,用含有0.1%吐温的PBS溶液洗涤酶标板,加入浓度为1μg/mL,标记了酶的抗噬菌体抗体溶液,在25℃下孵育1小时,去除孔内溶液,用含有0.1%吐温的PBS溶液洗板,最后加入酶底物显色,测定孔内溶液的吸收度,制作标准曲线。
8.根据权利要求7所述的一种检测盐酸克伦特罗含量的非竞争法酶联免疫分析方法,其特征在于:标记噬菌体抗体的酶为辣根过氧化酶或碱性磷酸酯酶,当酶为辣根过氧化酶时,对应的酶底物为3,3,5,5-四甲基联苯胺盐酸盐,测定吸光度时的可见光波长为450nm;当酶为碱性磷酸酯酶时,对应的酶底物为4-硝基苯磷酸二钠盐,测定吸光度时的可见光波长为405nm。
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