CN110066777A - 一种内切菊粉酶及其在生产低聚果糖中的应用 - Google Patents

一种内切菊粉酶及其在生产低聚果糖中的应用 Download PDF

Info

Publication number
CN110066777A
CN110066777A CN201910359719.7A CN201910359719A CN110066777A CN 110066777 A CN110066777 A CN 110066777A CN 201910359719 A CN201910359719 A CN 201910359719A CN 110066777 A CN110066777 A CN 110066777A
Authority
CN
China
Prior art keywords
thr
gly
ser
leu
ala
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN201910359719.7A
Other languages
English (en)
Other versions
CN110066777B (zh
Inventor
钮成拓
包敏
罗骄阳
李崎
刘春凤
王金晶
郑飞云
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Jiangnan University
Original Assignee
Jiangnan University
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Jiangnan University filed Critical Jiangnan University
Priority to CN201910359719.7A priority Critical patent/CN110066777B/zh
Publication of CN110066777A publication Critical patent/CN110066777A/zh
Application granted granted Critical
Publication of CN110066777B publication Critical patent/CN110066777B/zh
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C12BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12NMICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
    • C12N15/00Mutation or genetic engineering; DNA or RNA concerning genetic engineering, vectors, e.g. plasmids, or their isolation, preparation or purification; Use of hosts therefor
    • C12N15/09Recombinant DNA-technology
    • C12N15/63Introduction of foreign genetic material using vectors; Vectors; Use of hosts therefor; Regulation of expression
    • C12N15/70Vectors or expression systems specially adapted for E. coli
    • CCHEMISTRY; METALLURGY
    • C12BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12NMICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
    • C12N9/00Enzymes; Proenzymes; Compositions thereof; Processes for preparing, activating, inhibiting, separating or purifying enzymes
    • C12N9/14Hydrolases (3)
    • C12N9/24Hydrolases (3) acting on glycosyl compounds (3.2)
    • C12N9/2402Hydrolases (3) acting on glycosyl compounds (3.2) hydrolysing O- and S- glycosyl compounds (3.2.1)
    • CCHEMISTRY; METALLURGY
    • C12BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12PFERMENTATION OR ENZYME-USING PROCESSES TO SYNTHESISE A DESIRED CHEMICAL COMPOUND OR COMPOSITION OR TO SEPARATE OPTICAL ISOMERS FROM A RACEMIC MIXTURE
    • C12P19/00Preparation of compounds containing saccharide radicals
    • CCHEMISTRY; METALLURGY
    • C12BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12PFERMENTATION OR ENZYME-USING PROCESSES TO SYNTHESISE A DESIRED CHEMICAL COMPOUND OR COMPOSITION OR TO SEPARATE OPTICAL ISOMERS FROM A RACEMIC MIXTURE
    • C12P19/00Preparation of compounds containing saccharide radicals
    • C12P19/04Polysaccharides, i.e. compounds containing more than five saccharide radicals attached to each other by glycosidic bonds
    • CCHEMISTRY; METALLURGY
    • C12BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12PFERMENTATION OR ENZYME-USING PROCESSES TO SYNTHESISE A DESIRED CHEMICAL COMPOUND OR COMPOSITION OR TO SEPARATE OPTICAL ISOMERS FROM A RACEMIC MIXTURE
    • C12P19/00Preparation of compounds containing saccharide radicals
    • C12P19/12Disaccharides
    • CCHEMISTRY; METALLURGY
    • C12BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12PFERMENTATION OR ENZYME-USING PROCESSES TO SYNTHESISE A DESIRED CHEMICAL COMPOUND OR COMPOSITION OR TO SEPARATE OPTICAL ISOMERS FROM A RACEMIC MIXTURE
    • C12P19/00Preparation of compounds containing saccharide radicals
    • C12P19/14Preparation of compounds containing saccharide radicals produced by the action of a carbohydrase (EC 3.2.x), e.g. by alpha-amylase, e.g. by cellulase, hemicellulase
    • CCHEMISTRY; METALLURGY
    • C12BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12YENZYMES
    • C12Y302/00Hydrolases acting on glycosyl compounds, i.e. glycosylases (3.2)
    • C12Y302/01Glycosidases, i.e. enzymes hydrolysing O- and S-glycosyl compounds (3.2.1)
    • C12Y302/01007Inulinase (3.2.1.7)

Abstract

本发明公开了一种内切菊粉酶及其在生产低聚果糖中的应用,属于基因工程以及微生物工程技术领域。本发明提供的氨基酸序列如SEQ ID No.1所示的内切菊粉酶INU3B具有高比酶活和催化活性,其比酶活、最大反应速率(Vmax)、催化常数(Kcat)、底物亲和力(Km)和催化效率(Kcat/Km)分别可达2262.82±82.25U/mg、2564.1μmol·mg‑1min‑1、2393.2s‑1、10.6mg·mL‑1、225.77s‑1·mg‑1·mL,能满足内切菊粉酶以及低聚果糖(inulooligosaccharides,IOS)工业化生产的要求,在食品领域具有极高的应用前景。

Description

一种内切菊粉酶及其在生产低聚果糖中的应用
技术领域
本发明涉及一种内切菊粉酶及其在生产低聚果糖中的应用,属于酶工程和微生物工程技术领域。
背景技术
低聚果糖为由2~10个果糖组成的低聚化合物,又称果寡糖,具有抗肿瘤和改善胃肠功能的作用,也可作为膳食纤维用于防治糖尿病和减肥,还可用于降低血脂和预防高胆固醇等,因此,低聚果糖在食品领域有着极其广泛的应用,常被用于糖果、水果制品、牛奶制品、酸奶、鲜奶酪、烘焙食品和冰淇淋等的制作中。
目前,国内外生产低聚果糖的工艺主要有两种,一种是利用果糖基转移酶水解蔗糖生产低聚果糖(fructooligosaccharides,FOS),此水解过程会产生大量的副产物葡萄糖,而葡萄糖又会进一步抑制水解反应并降低产率,这使得利用此水解过程获得低聚果糖(fructooligosaccharides,FOS)的最终产率低于55%且所得产物不易分离纯化;另一种是利用内切菊糖酶(EC3.2.1.7)水解菊粉来获得较高纯度的低聚果糖(inulooligosaccharides,IOS),此水解过程的副产物仅有少量的蔗糖、葡萄糖和果糖,这使得利用此水解过程获得的低聚果糖(inulooligosaccharides,IOS)的纯度可高达90%且所得产物易分离纯化。因此,利用内切菊糖酶(EC3.2.1.7)水解菊粉生产低聚果糖(inulooligosaccharides,IOS)的工艺有极大的潜力取代传统的利用果糖基转移酶水解蔗糖生产低聚果糖(fructooligosaccharides,FOS)的工艺,成为低聚果糖工业化生产中最重要的工艺之一。
但是,现有的内切菊糖酶(EC3.2.1.7)普遍具有比酶活较低的缺陷,完全不能满足低聚果糖(inulooligosaccharides,IOS)工业化生产的要求,例如,Tohru Kobayashi等人从Microbulbifer sp.中分离得到的内切菊粉酶的比酶活仅可达到38.2U/mg(参考文献:Cloning and sequencing of inulinase and beta-fructofuranosidase genes of adeep-sea Microbulbifer species and properties of recombinant enzymes);YangLi等人从Arthrobacter sp.S37中分离得到的内切菊粉酶的比酶活仅可达到93.4U/mg(参考文献:Purification and characterization of an endoinulinase from Xanthomonasoryzae No.5)。
这无疑大大限制了低聚果糖的工业化生产进程,因此,急需获取一种具有高比酶活的内切菊粉酶以促进低聚果糖的工业化生产进程。
发明内容
[技术问题]
本发明要解决的技术问题是提供一种具有高比酶活的内切菊粉酶。
[技术方案]
为解决上述问题,本发明提供了一种内切菊粉酶(EC3.2.1.7),所述内切菊粉酶为:
(a)由SEQ ID No.1或SEQ ID No.3所示的氨基酸序列组成的蛋白质;或者,
(b)在(a)中的氨基酸序列经过取代、缺失或添加一个或几个氨基酸且具有内切菊粉酶活性的由(a)衍生的蛋白质。
本发明还提供了编码上述内切菊粉酶的基因。
在本发明的一种实施方式中,所述基因的核苷酸序列如SEQ ID No.2或SEQ IDNo.4所示。
本发明还提供了携带上述基因的重组质粒。
在本发明的一种实施方式中,所述重组质粒的载体为pET22b(+)载体。
本发明还提供了携带上述基因或上述重组质粒的宿主细胞。
在本发明的一种实施方式中,所述宿主细胞为大肠杆菌。
本发明还提供了上述内切菊粉酶的制备方法,将权利要求5或6所述宿主细胞加入到培养基中培养至OD600=0.6~0.8后,在发酵液中添加IPTG继续诱导培养10~30h,得到内切菊粉酶。
在本发明的一种实施方式中,所述培养基包含LB培养基或TB培养基。
在本发明的一种实施方式中,所述培养的温度为20℃、转速为220rpm。
在本发明的一种实施方式中,所述IPTG在发酵液中的浓度为0.1mmol/L。
本发明还提供了应用上述方法制备得到的内切菊粉酶。
本发明还提供了上述内切菊粉酶或上述基因或上述重组质粒或上述宿主细胞或上述制备方法或上述制备得到的内切菊粉酶在生产低聚果糖方面的应用。
本发明还提供了一种生产低聚果糖的方法,将上述内切菊粉酶加入到含有菊粉的缓冲液进行转化,得到低聚果糖。
在本发明的一种实施方式中,所述缓冲液为乙酸铵缓冲液。
在本发明的一种实施方式中,所述乙酸铵缓冲液的浓度为50mmol/L。
在本发明的一种实施方式中,所述乙酸铵缓冲液的pH为5.5。
在本发明的一种实施方式中,所述转化的温度为40~70℃、时间为0.5~2h。
[有益效果]
(1)本发明提供的氨基酸序列如SEQ ID No.1所示的内切菊粉酶INU3B具有高比酶活和催化活性,其比酶活、最大反应速率(Vmax)、催化常数(Kcat)、底物亲和力(Km)和催化效率(Kcat/Km)分别可达2262.82±82.25U/mg、2564.1μmol·mg-1min-1、2393.2s-1、10.6mg·mL-1以及225.77s-1·mg-1·mL,能够满足内切菊粉酶以及低聚果糖(inulooligosaccharides,IOS)工业化生产的要求,在食品领域具有极高的应用前景;
(2)利用本发明的氨基酸序列如SEQ ID No.1所示的内切菊粉酶INU3B水解菊粉生产得到的低聚果糖(inulooligosaccharides,IOS)纯度较高,可高达93.8%,并且,利用本发明的氨基酸序列如SEQ ID No.1所示的内切菊粉酶INU3B水解菊粉生产低聚果糖(inulooligosaccharides,IOS)的副产物较少,仅有少量的蔗糖,易分离纯化,更适用于大规模工业化生产。
附图说明
图1:INU3B与已知内切菊粉酶的氨基酸序列比对结果图。
图2:inu3A、inu3B、inu3C基因的结构示意图。
图3:重组质粒pET22b(+)-inu3B的图谱。
图4:INU3B表达纯化后的SDS-PAGE凝胶图。
图5:INU3B在不同温度条件下的酶活变化。
图6:INU3B在不同温度条件下保存1h后的酶活变化。
图7:INU3B在不同pH条件下的酶活变化。
图8:INU3B在不同pH条件下保存24h后的酶活变化。
图9:INU3B的酶反应初速度与底物浓度的关系;其中,V表示INU3B的酶反应初速度,[S]表示底物浓度。
图10:INU3B以菊粉为底物进行转化反应时的产物分析HPLC图谱;其中,(a)为标准品G、GF、GF2、GF3、GF4和GF5的HPLC图谱分析;(b)为转化反应0min时的产物分析HPLC图谱;(c)为转化反应30min时的产物分析HPLC图谱。
具体实施方式
下面结合具体实施例,对本发明进行进一步的阐述。
下述实施例中涉及的酵母(Lipomyces starkeyi NRRL Y-11557)购自日本技术评价研究所生物资源中心(NITE Biological Resource Center),产品编号为:NBRC 10381;下述实施例中涉及的大肠杆菌E.coli BL21(DE3)购自北京索莱宝科技有限公司;下述实施例中涉及的pET-20b(+)载体购自Novagen公司;下述实施例中涉及的果糖、菊粉购自Sigma-Aldrich公司。
(酵母(Lipomyces starkeyi NRRL Y-11557)、大肠杆菌E.coli BL21(DE3)均可以购买得到,不需要进行用于专利程序的保藏)
下述实施例中涉及的培养基如下:
LB液体培养基:蛋白胨10g·L-1,酵母膏5g·L-1,氯化钠10g·L-1,氨苄青霉素100μg·mL-1
LB固体培养基:蛋白胨10g·L-1,酵母膏5g·L-1,氯化钠10g·L-1,琼脂20g·L-1,氨苄青霉素100μg·mL-1
TB液体培养基:蛋白胨12g·L-1,酵母粉24g·L-1,磷酸二氢钾2.31g·L-1,磷酸氢二钾12.54g·L-1,甘油4mL·L-1,氨苄青霉素100μg·mL-1
下述实施例中涉及的检测方法如下:
内切菊粉酶比酶活的检测:
配置1mg/mL的果糖溶液,按表1所示稀释成不同浓度的果糖溶液,测定不同浓度的果糖溶液于540nm波长处的吸光值,以吸光值为纵坐标,相对应的果糖浓度为横坐标,绘制标准曲线;
将纯化后的内切菊粉酶稀释1000倍,获得酶液,取800μL浓度为2.0%(w/v)的菊粉溶液,加入200μL酶液,于温度为70℃、pH为5.5的条件下反应10min,加入1mL的DNS试剂中止反应,得到反应液;将到反应液与未经反应的200μL酶液分别于100℃下加热5min灭酶,冷却,稀释10倍并测定灭酶反应液于540nm波长处的吸光值,根据此吸光值在绘制的标准曲线上找到对应的果糖浓度,即可计算出酶液的酶活,从而计算出纯化后的内切菊粉酶的比酶活;
内切菊粉酶酶活的定义为:在pH为5.5、温度为70℃的条件下,每分钟水解菊粉生成1μmol还原糖所需的酶量(mL)为1个酶活力单位(U);
内切菊粉酶比酶活的定义为:在pH为5.5、温度为70℃的条件下,单位重量(mg)内切菊粉酶所具有的酶活力单位数(U)。
表1标准曲线制作
编号 1 2 3 4 5 6 7
1.0mg/mL果糖溶液(mL) 0 0.1 0.2 0.4 0.6 0.8 1
去离子水(mL) 1 0.9 0.8 0.6 0.4 0.2 0
DNS(mL) 1 1 1 1 1 1 1
实施例1:编码内切菊粉酶INU3的基因的筛选与生物信息学分析
具体步骤如下:
以已知的来源于Aspergillus ficuum的内切菊粉酶的氨基酸序列(NCBI编号为O94220.1)为探针在NCBI中进行BLAST比对,发现,来源于Lipomyces starkeyi NRRL Y-11557的氨基酸序列(NCBI编号为ODQ71402.1)与探针的同源性高达67%,即判断此氨基酸序列可能为内切菊粉酶的氨基酸序列,命名为目标氨基酸序列(氨基酸序列为SEQ IDNo.3)。
为进一步验证目标氨基酸序列是否为内切菊粉酶的氨基酸序列,将目标氨基酸序列与其他已知的内切菊粉酶(NCBI编号分别为XP 001394322.1、O94220.1、CAB63119.1、AAF24999.1以及BAA12321.1)的氨基酸序列进行保守区比对,比对结果见图1。
研究结果表明,通常情况下,内切菊粉酶一般含有6个保守区,此6个保守区分别标记为WMNEPNGL、Q、FT、RDP、EVP和SVEVF,由图1可知,目标氨基酸序列中含有内切菊粉酶的6个保守区序列,因此,进一步确认目标氨基酸序列为内切菊粉酶的氨基酸序列,将目标氨基酸序列所对应的基因命名为inu3(核苷酸序列为SEQ ID No.4),对应的蛋白命名为INU3。
一般而言,内切菊粉酶的氨基酸序列大约有500AA,而SEQ ID No.3所示的目标氨基酸序列则有1500AA左右,为获得目标氨基酸序列中真正具有内切菊粉酶活性的区域,先根据氨基酸序列比对结果,初步估计目标氨基酸序列的结构可能如图2的inu3所示,然后,按照图2对目标氨基酸序列进行截断,分别截断为三段,将这三段氨基酸序列所对应的基因分别命名为inu3A(核苷酸序列为SEQ ID No.6)、inu3B(核苷酸序列为SEQ ID No.2)以及inu3C(核苷酸序列为SEQ ID No.8),对应的蛋白分别命名为INU3A(氨基酸序列为SEQ IDNo.5)、INU3B(氨基酸序列为SEQ ID No.1)以及INU3C(氨基酸序列为SEQ ID No.7);
其中,inu3A是通过将inu3 N端的SP区域、C端的黑色区域以及中段的intron区域截去后获得的;inu3B是通过将inu3 C端的黑色区域以外的所有部分截去后获得的;inu3C是通过将inu3 N端的SP区域以及中段的intron区域截去后获得的。
实施例2:inu3A、inu3B以及inu3C在大肠杆菌中的表达
具体步骤如下:
1、inu3A、inu3B以及inu3C的提取
以Lipomyces starkeyi NRRL Y-11557基因组为模板,通过重叠PCR的方法扩增得到inu3C,而后以inu3C为模板,扩增获得inu3A、inu3B,扩增所用引物见表2;其中,PCR反应体系为:25μL Premix PrimeSTAR HS,10mM正向引物2μL,10mM反向引物2μL,基因组100ng,加入双蒸水补齐至50μL;PCR反应扩增条件为:94℃预变性5min;随后进行94℃ 30s,55℃30s,72℃ 1min32个循环。
PCR扩增产物经过切胶回收后使用限制性内切酶EcoR I和Xho I进行双酶切,并与经过EcoR I和Xho I双酶切的pET22b(+)质粒连接后转化至大肠杆菌BL21(DE3)感受态细胞中,得到重组菌E.coli BL21(DE3)/pET22b(+)-inu3A、E.coli BL21(DE3)/pET22b(+)-inu3B以及E.coli BL21(DE3)/pET22b(+)-inu3C(重组质粒pET22b(+)-inu3B的图谱见图3)。
表2引物序列及其用途
2、inu3A、inu3B以及inu3C的表达
将实施例1获得的挑取重组菌E.coli BL21(DE3)/pET22b(+)-inu3A、E.coli BL21(DE3)/pET22b(+)-inu3B以及E.coli BL21(DE3)/pET22b(+)-inu3C分别涂布于LB固体培养基上,37℃、220rpm培养10~12h,挑取长出的单菌落分别接种于含100μg/mL氨苄西林的LB液体培养基中,37℃、220rpm培养10~12h,按4%(v/v)的接种量转接至含100μg/mL氨苄西林的TB液体培养基中,37℃、220rpm培养至OD600为0.6~0.8,加入终浓度0.1mM的IPTG,20℃、220rpm继续诱导表达20h,得到发酵液;将发酵液于5000rpm的条件下离心5min,去掉上清,收集菌体并加入50mM的磷酸盐缓冲液(pH6.5)重悬,5000rpm的条件下离心5min,弃上清,收集菌体并加入50mM的磷酸盐缓冲液(pH6.5)重悬至OD600为5,得到细胞重悬液;将细胞重悬液在冰浴条件下超声波破碎,破碎条件为:20%功率超声3s,间隔7s,120次,得到细胞破碎液;将细胞破碎液于4℃、12000rpm的条件下离心5min,得到细胞破碎上清液;其中,重组菌E.coli BL21(DE3)/pET22b(+)-inu3A、E.coli BL21(DE3)/pET22b(+)-inu3B以及E.coli BL21(DE3)/pET22b(+)-inu3C发酵得到的细胞破碎上清液分别命名为细胞破碎上清液A、细胞破碎上清液B以及细胞破碎上清液C。
将细胞破碎上清液A、细胞破碎上清液B以及细胞破碎上清液C经过镍柱亲和层析,获得纯化后的INU3A、INU3B以及INU3C,检测纯化后的INU3A、INU3B以及INU3C的比酶活,检测结果为:INU3A和INU3C的比酶活几乎没有,INU3B的比酶活为2262.82±82.25U/mg。
将纯化后的INU3B进行SDS-PAGE分析,分析发现,INU3B主要出现在350mM咪唑洗脱液中,且条带单一(SDS-PAGE分析见图4)。
实施例3:INU3B的酶学性质分析
具体步骤如下:
1、最适反应温度
分别以40、45、50、55、60、65、70、75、80℃作为反应温度测定实施例2获得的纯化后INU3B的酶活,以酶活最高的为100%,其余酶活与之相比计算相对酶活,以考察酶的最适作用温度(检测结果见图5)。
由图5可知,INU3B的最适温度较高,为70℃。
2、热稳定性
实施例2获得的纯化后INU3B分别置于40、45、50、55、60、65、70、75、80℃下保温1h后迅速冰浴冷却,在50℃、pH6.5的条件下测定其酶活,以40℃下保温的酶活为100%,其余酶活与之相比计算残留酶活,以考察其温度稳定性(检测结果见图6)。
由图6可知,INU3B的热稳定性较好,于65℃下保温1h后酶活依旧有80%以上。
3、最适反应pH
配制pH值分别为3.0、4.0、5.0、6.0、6.5、7.0、8.0的含有2.0%(w/v)菊粉的50mM磷酸缓冲液(pH6.5)代替内切菊粉酶酶活测定方法中的浓度为2.0%(w/v)的菊粉溶液,在50℃下测定实施例2获得的纯化后INU3B的酶活,以酶活最高的为100%,其余酶活与之相比计算相对酶活,以考察酶的最适作用pH(检测结果见图7)。
由图7可知,INU3B的最适pH为4~6,范围较广。
4、pH稳定性测定
配制pH值分别为3.0、4.0、5.0、6.0、6.5、7.0、8.0的含有2.0%(w/v)菊粉的50mM磷酸缓冲液(pH6.5)代替内切菊粉酶酶活测定方法中的浓度为2.0%(w/v)的菊粉溶液,将实施例2获得的纯化后INU3B分别在上述缓冲体系下于4℃保存24h后,在50℃下测定其酶活,以初始酶活为100%,保存后酶活与之相比计算残留酶活,以考察其pH稳定性(检测结果见图8)
由图8可知,INU3B的pH稳定性较好,在pH为3~8时均具有较好的稳定性。
实施例4:INU3B的动力学常数分析
具体步骤如下:
在酶促反应动力学研究中,Km和Kcat是酶促反应最重要的特征常数,分别反映了酶与底物的亲和力及酶的反应速率,本实施例采用双倒数作图法来测定内切菊粉酶INU3B的Km和Vmax值,具体步骤如下:
分别以浓度为0.25~20mg·mL-1的菊粉作为底物,加入200μL稀释1000倍的实施例2获得的纯化后INU3B,于温度为70℃、pH为6.5的条件下反应10min,以单位时间内生成的还原糖量作为酶反应的初速度V;根据米氏方程V={Vmax·[S]}/{Km+[S]},将酶反应的初速度V和底物浓度[S]进行非线性拟合(具体可见图9),可以计算得出INU3B的Km值和Vmax值分别为10.6mg·mL-1和2564.1μmol·mg-1min-1,根据INU3的分子量大小为56KDa,可以计算出INU3B的Kcat值和Kcat/Km值分别为1866s-1和225.77s-1·mg-1·mL,可见,INU3B的催化活性高。
实施例5:INU3B的水解产物分析
具体步骤如下:
为了分析实施例2获得的纯化后INU3B水解菊粉的水解产物,将含有0.2mL浓度为5.94μg/mL的INU3B和0.8mL浓度为5%(w/v)的菊粉的混合物溶于50mM乙酸铵缓冲液(pH5.5)中,于70℃水浴30min,采用高效液相色谱电雾式检测器法(HPLC-CAD)检测水解产物(检测结果见图10);其中,使用XbridgeAmide柱(4.6mm×250mm,5.0μm)在ThermoULtimate3000上进行分析,流动相为70%乙腈,流速为1mL·min-1;柱温控制在30℃;葡萄糖、蔗糖、蔗果三糖(GF2)、蔗果四糖(GF3)、蔗果五糖(GF4)和蔗果六糖(GF5)用作标准品;F、FF、FF2、FF3、FF4和FF5的含量分别以G、GF、GF2、GF3、GF4和GF5为标准品来定量;所有标准品均为分析纯,纯度超过9%。
由图10可知,INU3B水解菊粉的水解产物的主要是GF2,GF3和GF4;其中,产物的组成为34.0%蔗果四糖(GF3)、26.1%的蔗果三糖(GF2)、23.1%蔗果五糖(GF4)、10.7%蔗果六糖(GF5)以及6.2%蔗糖,可见,利用INU3B水解菊粉生产得到的低聚果糖(inulooligosaccharides,IOS)纯度较高,可高达93.8%,并且,利用INU3B水解菊粉生产低聚果糖(inulooligosaccharides,IOS)的副产物较少,仅有少量的蔗糖,易分离纯化。
虽然本发明已以较佳实施例公开如上,但其并非用以限定本发明,任何熟悉此技术的人,在不脱离本发明的精神和范围内,都可做各种的改动与修饰,因此本发明的保护范围应该以权利要求书所界定的为准。
序列表
<110> 江南大学
<120> 一种内切菊粉酶及其在生产低聚果糖中的应用
<160> 18
<170> PatentIn version 3.3
<210> 1
<211> 520
<212> PRT
<213> Lipomyces starkeyi
<400> 1
Met Ser Asn Thr Ser Thr Thr Ser Val Gly Ser Thr Leu Thr Thr Ser
1 5 10 15
Thr Ile Thr Ala Thr Ser Ala Ser Pro Thr Ser Thr Ala Pro Tyr Asp
20 25 30
Phe Arg Pro Val Phe His Phe Val Pro Glu Glu Asn Trp Met Asn Glu
35 40 45
Pro Asn Gly Leu Ile Lys Ile Gly Pro Thr Trp His Leu Phe Phe Gln
50 55 60
His Asn Pro Thr Gly Asn Phe Trp Gly Asn Leu Ser Trp Gly His Ala
65 70 75 80
Thr Ser Thr Asp Leu Val Ser Trp Asn Tyr Glu Pro Ile Ala Ile Ser
85 90 95
Ser Ala Asp Gly Ile Trp Ala Phe Thr Gly Thr Ser Tyr Phe Asp Ala
100 105 110
Glu Asn Leu Ser Gly Leu Gly Thr Ser Ser Asn Pro Pro Tyr Leu Ala
115 120 125
Phe Tyr Thr Gly Tyr Ala Pro Ser Ser Gly Val Gln Asp Gln Arg Leu
130 135 140
Ala Tyr Ser Leu Asp Gln Gly Ala Thr Tyr Thr Lys Tyr Gln Gly Asn
145 150 155 160
Pro Ile Ile Pro Gln Ser Gln Glu Ala Pro His Asp Ile Thr Gly Gly
165 170 175
Leu Glu Ile Arg Asp Pro Lys Val Phe Tyr His Ser Pro Thr Ser Glu
180 185 190
Trp Val Met Val Leu Ala His Gly Gly Gln Asn Lys Val Ser Phe Trp
195 200 205
Thr Ser Thr Asp Thr Thr Asn Trp Thr Trp Val Ser Asp Phe Thr Ala
210 215 220
Ser Asn Ile Val Gly Phe Pro Gly Gly Ile Ser Gly Trp Glu Val Pro
225 230 235 240
Asp Phe Phe Glu Leu Gln Ile Glu Gly Thr Thr Gln Thr Lys Trp Val
245 250 255
Leu Ile Val Thr Pro Ala Ala Gly Ser Pro Ala Gly Gly Asn Gly Val
260 265 270
Phe Ala Leu Thr Gly Ser Phe Asp Gly Ser Val Phe Thr Ala Asp Thr
275 280 285
Val Asp Pro Thr Thr Leu Trp Leu Asp Tyr Gly Arg Asp Trp Asp Gly
290 295 300
Ala Met Ser Trp Glu Asn Val Pro Ala Ser Asp Gly Arg Arg Ile Leu
305 310 315 320
Ala Ala Val Met Asn Ser Tyr Gly Val Asn Pro Pro Thr Asn Thr Trp
325 330 335
Lys Gly Met Leu Ser Phe Pro Arg Thr Leu Glu Leu Thr Gln Leu Asn
340 345 350
Gly Lys Leu Gln Phe Leu Gln Leu Pro Val Ser Glu Leu Asp Gly Val
355 360 365
Ser Thr Ser Val Ala Thr Ile Thr Asn Gln Thr Leu Ala Pro Gly Gln
370 375 380
Thr Leu Leu Ser Asn Ile His Ser Arg Gln Leu Asp Ile Arg Ile Thr
385 390 395 400
Phe Val Pro Thr Gln Gly Ser Thr Leu Ser Leu Ser Val Arg Lys Gly
405 410 415
Gly Ser Gln Gln Thr Val Ile Glu Tyr Ile Gln Ser Asn Asn Gln Leu
420 425 430
Ser Val Asp Arg Asn Ala Ser Gly Asp Ile Ser Tyr Asp Pro Ala Ala
435 440 445
Gly Gly Val His Thr Ala Ala Leu Gln Thr Asp Ala Asn Gly Lys Val
450 455 460
Gln Leu Arg Val Leu Val Asp Glu Cys Ser Ile Glu Val Phe Gly Gly
465 470 475 480
Gln Gly Glu Ala Val Ile Ser Asp Leu Ile Phe Pro Asp Ile Ser Ser
485 490 495
Asp Gly Leu Ala Leu Ser Thr Ser Gln Gly Asn Val Val Leu Glu Ser
500 505 510
Val Asp Val Arg Ser Ile Ser Leu
515 520
<210> 2
<211> 1563
<212> DNA
<213> Lipomyces starkeyi
<400> 2
atgagtaaca ccagcactac ctctgtaggt agcaccctaa ccactagtac aataaccgcc 60
actagcgcta gccctacgtc cacggcgccc tacgattttc gtcctgtttt ccatttcgtg 120
ccagaagaga actggatgaa tgagcccaat ggactgatca aaatcggccc tacctggcac 180
cttttctttc aacacaaccc aactggaaac ttttggggca acttaagttg gggacatgcc 240
actagcactg accttgtgtc ctggaattat gaaccgattg caatttcgag cgcagatggg 300
atatgggctt tcacaggaac ctcttacttt gatgcagaga atctctcggg gcttggcacg 360
tcatcaaacc cgccgtacct tgccttttat actggctacg ccccctcaag tggcgtacag 420
gatcaaaggc ttgcgtatag cttagaccag ggagcgactt atacgaagta ccagggcaat 480
ccaatcatac cacaaagcca agaagcgcca cacgatataa ccgggggtct ggagatacgt 540
gatccaaaag tgttctatca cagcccgacg agcgaatggg tcatggttct ggcgcacggg 600
ggacaaaaca aagtatcgtt ctggacgtct acagatacaa cgaactggac ctgggtaagt 660
gacttcaccg caagcaatat tgtgggtttc cctggtggaa tttcaggttg ggaggtgcca 720
gactttttcg aacttcagat tgaaggtact acacaaacga aatgggtgtt gattgtgact 780
cctgccgctg gatcgcctgc tggtggaaat ggagtctttg cactcactgg atctttcgac 840
ggctccgtat ttacagcgga cacggttgat cctaccacgc tatggctcga ttatggtcgc 900
gattgggatg gggccatgag ttgggaaaac gtacctgctt cggacgggcg taggattctt 960
gctgcagtta tgaacagtta tggtgttaac cccccaacca atacgtggaa gggaatgctt 1020
tcgttccctc gaactctgga gctcacgcaa ctgaatggta aattgcaatt ccttcaactg 1080
cccgtgagcg aactagacgg ggtcagcact tcagttgcga ctatcacgaa tcagactctt 1140
gcaccaggac aaacgttgct ctccaacatc cattcacggc aattggatat ccgtattacg 1200
tttgttccta cccagggctc gacactgtct ctctccgttc ggaagggagg atctcaacag 1260
accgtgattg aatatatcca gtccaacaat caactttccg tcgatcgcaa tgcaagtgga 1320
gacatttcat acgatcctgc tgctggcggt gtccacacgg ccgctctcca gaccgatgcc 1380
aatgggaagg tgcaattgcg agtattggtt gatgaatgtt ccattgaggt ttttggcggg 1440
caaggggagg cggtgatctc tgatttgata ttccccgata tttcctcgga cggcctcgct 1500
ttgtccacta gtcaaggtaa cgtggtattg gaatcagtcg acgtgcgatc gatttcgctc 1560
tga 1563
<210> 3
<211> 1424
<212> PRT
<213> Lipomyces starkeyi
<400> 3
Met Val Gly Phe Arg Leu Thr Ile Val Leu Thr Leu Gly Leu His Leu
1 5 10 15
Phe Gln Ala Ala Phe Ala Gln Thr Tyr Asn Glu Leu Tyr Arg Pro Gln
20 25 30
Tyr His Phe Thr Pro Ala Glu Asn Trp Met Asn Asp Pro Asn Gly Leu
35 40 45
Leu Tyr Tyr Asn Gly Val Tyr His Leu Tyr Tyr Gln Tyr Asn Pro Gly
50 55 60
Gly Asn Thr Trp Gly Ala Met Ser Trp Gly His Ala Thr Ser Thr Asp
65 70 75 80
Leu Thr His Trp Asn Pro Glu Pro Val Ala Leu Leu Ala Arg Gly Tyr
85 90 95
Pro Gly Asp Val Thr Glu Met Phe Phe Ser Gly Ser Ala Val Ala Asp
100 105 110
Thr Gln Asn Thr Ser Gly Phe Gly Ser Ser Gly Asn Val Pro Phe Val
115 120 125
Ala Met Tyr Thr Ser Tyr Tyr Pro Ala Ser Gln Asn Leu Pro Ser Gly
130 135 140
Lys Ser Val Asn Gly Gly Gln Gln Ala Gln Ser Ile Ala Tyr Ser Leu
145 150 155 160
Asp Glu Gly Leu Thr Trp Thr Thr Tyr Asp Ala Ala Asn Pro Val Ile
165 170 175
Leu Asn Pro Pro Ala Pro Tyr Ala Asp Gln Trp Gln Asn Phe Arg Asp
180 185 190
Pro Phe Val Phe Trp His Glu Ala Ser Gln Met Trp Ile Ser Val Val
195 200 205
Ser Leu Ala Gln Leu Gln Lys Leu Leu Ile Tyr Thr Ser Pro Asn Leu
210 215 220
Lys Asp Trp Thr Tyr Ala Ser Glu Phe Gly Pro Trp Asn Ala Val Gly
225 230 235 240
Gly Val Trp Glu Cys Pro Ser Ile Phe Pro Leu Ala Val Asp Gly Asp
245 250 255
Asp Ala Asn Ile Lys Trp Val Met Gln Ile Gly Leu Asn Pro Gly Gly
260 265 270
Pro Pro Gly Val Thr Gly Ser Gly Met Gln Tyr Ile Val Gly Thr Phe
275 280 285
Asp Gly Thr Asn Phe Val Ala Asp Ser Asn Ser Pro Pro Ser Ala Pro
290 295 300
Thr Ser Thr Ser Thr Leu Asn Pro Glu Thr Ser Ile Ser Ile Thr Phe
305 310 315 320
Thr Thr Thr Thr Ala Thr Ala Thr Ala Thr Ala Thr Gly Asp Ile Val
325 330 335
Phe Gln Asp Phe Glu Gly Thr Gly Asp Phe Ala Ser Arg Gly Trp Val
340 345 350
Gly Thr Gly Gly Leu Leu Gly Ala Ala Pro Ala Gln Gly Thr Leu Ala
355 360 365
Gly Gln Gln Thr Val Thr Gly Tyr Ala Gly Ser Gln Leu Leu Val Asn
370 375 380
Thr Phe Leu Ser Gly Asp Ser Thr Thr Gly Thr Leu Thr Ser Pro Ala
385 390 395 400
Phe Thr Ile Ser Leu Pro Tyr Ile Asn Phe Leu Ile Gly Gly Gly Asn
405 410 415
Ala Pro Gly Thr Glu Cys Ile Asn Leu Met Val Gln Asp Gln Val Val
420 425 430
Arg Thr Ala Thr Gly Ala Asn Ala Glu Gln Leu Ile Pro Glu Thr Trp
435 440 445
Asp Val Thr Asp Leu Ile Gly Gln Ser Ala Val Ile Glu Ile Val Asp
450 455 460
Leu Ser Thr Ala Gly Trp Gly His Ile Leu Ile Asp Gln Ile Thr Phe
465 470 475 480
Thr Gly Ser Thr Ser Thr Asn Asn Leu Leu Lys Arg Ser Asp Thr Ser
485 490 495
Asp Thr Trp Asp Phe Asn Gly Thr Ser Thr Phe Ala Asp Tyr Gly Trp
500 505 510
Thr Ala Thr Gly Asp Leu Ile Gly Met Gly Pro Val Gln Gly Thr Leu
515 520 525
Ala Gly Gln Gln Val Val Thr Gly Tyr Met Gly Asn Phe Val Asn Thr
530 535 540
Phe Leu Asn Gly Asp Ala Thr Thr Gly Thr Leu Thr Ser Pro Thr Phe
545 550 555 560
Thr Ile Thr Gln Met Lys Ile Asn Phe Leu Ile Gly Gly Gly Asn Met
565 570 575
Pro Gly Val Glu Cys Ile Asn Leu Met Val Gln Asp Gln Val Val Arg
580 585 590
Thr Ala Thr Gly Ala Asp Ala Glu Gln Leu Ile Pro Glu Thr Trp Asp
595 600 605
Val Thr Asp Leu Ile Gly Gln Ser Ala Val Ile Glu Ile Val Asp Leu
610 615 620
Ser Thr Ala Gly Trp Gly His Ile Leu Ile Asp Glu Ile Ser Phe Ser
625 630 635 640
Asn Ile Ser Ile Glu Pro Tyr Gly Pro Asn Trp Met Asp Tyr Gly Pro
645 650 655
Asp Phe Tyr Ala Ala Thr Thr Phe Asn Gly Leu Ser Ser Thr Asn Gln
660 665 670
Ile Asp Ile Ala Trp Met Asn Asn Trp Gln Tyr Ala Ser Val Ile Pro
675 680 685
Thr Ser Pro Trp Arg Gly Met Leu Ser Val Ala Arg Lys Leu Ser Leu
690 695 700
Lys Thr Ile Asp Glu Arg Pro Arg Leu Ile Gln Gln Pro Thr Ala Asn
705 710 715 720
Trp Thr Ser Leu Gln Thr Thr Thr Tyr Ser Asn Thr Phe Asp Thr Val
725 730 735
Ala Glu Gly Asn Gln Leu Val Gln Leu Ser Gly Lys Leu Leu Asp Ile
740 745 750
Thr Val Ala Phe Ser Asp Ile Val Ala Gly Ser Ser Ser Ser Gln Phe
755 760 765
Gly Ile Ile Leu Arg Ala Thr Ser Asp Leu Ala Gln Gln Thr Arg Ile
770 775 780
Gly Tyr Glu Phe Thr Thr Glu Arg Leu Phe Val Asp Arg Thr Ile Ser
785 790 795 800
Gly Asn Val Gly Phe Asp Gly Thr Phe Pro Asn Thr Tyr Tyr Ala Pro
805 810 815
Leu Ala Thr Ser Asp Asp Gly Gln Val Thr Met Arg Ile Leu Leu Asp
820 825 830
Trp Ser Ser Val Glu Val Phe Gly Gly Gln Gly Glu Val Thr Ile Ser
835 840 845
Ala Gln Ile Phe Pro Gln Asp Thr Gly Ile Asp Val Arg Leu Phe Ser
850 855 860
Val Gly Gly Asn Thr Asn Asn Val Thr Ile Asp Ala Thr Val Leu Asp
865 870 875 880
Ser Ala Tyr Asp Ser Ser Thr Pro Ser Thr Ser Leu Ser Thr Ser Leu
885 890 895
Thr Tyr Thr Glu Thr Ala Thr Ile Met Ser Asn Thr Ser Thr Thr Ser
900 905 910
Val Gly Ser Thr Leu Thr Thr Ser Thr Ile Thr Ala Thr Ser Ala Ser
915 920 925
Pro Thr Ser Thr Ala Pro Tyr Asp Phe Arg Pro Val Phe His Phe Val
930 935 940
Pro Glu Glu Asn Trp Met Asn Glu Pro Asn Gly Leu Ile Lys Ile Gly
945 950 955 960
Pro Thr Trp His Leu Phe Phe Gln His Asn Pro Thr Gly Asn Phe Trp
965 970 975
Gly Asn Leu Ser Trp Gly His Ala Thr Ser Thr Asp Leu Val Ser Trp
980 985 990
Asn Tyr Glu Pro Ile Ala Ile Ser Ser Ala Asp Gly Ile Trp Ala Phe
995 1000 1005
Thr Gly Thr Ser Tyr Phe Asp Ala Glu Asn Leu Ser Gly Leu Gly
1010 1015 1020
Thr Ser Ser Asn Pro Pro Tyr Leu Ala Phe Tyr Thr Gly Tyr Ala
1025 1030 1035
Pro Ser Ser Gly Val Gln Asp Gln Arg Leu Ala Tyr Ser Leu Asp
1040 1045 1050
Gln Gly Ala Thr Tyr Thr Lys Tyr Gln Gly Asn Pro Ile Ile Pro
1055 1060 1065
Gln Ser Gln Glu Ala Pro His Asp Ile Thr Gly Gly Leu Glu Ile
1070 1075 1080
Arg Asp Pro Lys Val Phe Tyr His Ser Pro Thr Ser Glu Trp Val
1085 1090 1095
Met Val Leu Ala His Gly Gly Gln Asn Lys Val Ser Phe Trp Thr
1100 1105 1110
Ser Thr Asp Thr Thr Asn Trp Thr Trp Val Ser Asp Phe Thr Ala
1115 1120 1125
Ser Asn Ile Val Gly Phe Pro Gly Gly Ile Ser Gly Trp Glu Val
1130 1135 1140
Pro Asp Phe Phe Glu Leu Gln Ile Glu Gly Thr Thr Gln Thr Lys
1145 1150 1155
Trp Val Leu Ile Val Thr Pro Ala Ala Gly Ser Pro Ala Gly Gly
1160 1165 1170
Asn Gly Val Phe Ala Leu Thr Gly Ser Phe Asp Gly Ser Val Phe
1175 1180 1185
Thr Ala Asp Thr Val Asp Pro Thr Thr Leu Trp Leu Asp Tyr Gly
1190 1195 1200
Arg Asp Trp Asp Gly Ala Met Ser Trp Glu Asn Val Pro Ala Ser
1205 1210 1215
Asp Gly Arg Arg Ile Leu Ala Ala Val Met Asn Ser Tyr Gly Val
1220 1225 1230
Asn Pro Pro Thr Asn Thr Trp Lys Gly Met Leu Ser Phe Pro Arg
1235 1240 1245
Thr Leu Glu Leu Thr Gln Leu Asn Gly Lys Leu Gln Phe Leu Gln
1250 1255 1260
Leu Pro Val Ser Glu Leu Asp Gly Val Ser Thr Ser Val Ala Thr
1265 1270 1275
Ile Thr Asn Gln Thr Leu Ala Pro Gly Gln Thr Leu Leu Ser Asn
1280 1285 1290
Ile His Ser Arg Gln Leu Asp Ile Arg Ile Thr Phe Val Pro Thr
1295 1300 1305
Gln Gly Ser Thr Leu Ser Leu Ser Val Arg Lys Gly Gly Ser Gln
1310 1315 1320
Gln Thr Val Ile Glu Tyr Ile Gln Ser Asn Asn Gln Leu Ser Val
1325 1330 1335
Asp Arg Asn Ala Ser Gly Asp Ile Ser Tyr Asp Pro Ala Ala Gly
1340 1345 1350
Gly Val His Thr Ala Ala Leu Gln Thr Asp Ala Asn Gly Lys Val
1355 1360 1365
Gln Leu Arg Val Leu Val Asp Glu Cys Ser Ile Glu Val Phe Gly
1370 1375 1380
Gly Gln Gly Glu Ala Val Ile Ser Asp Leu Ile Phe Pro Asp Ile
1385 1390 1395
Ser Ser Asp Gly Leu Ala Leu Ser Thr Ser Gln Gly Asn Val Val
1400 1405 1410
Leu Glu Ser Val Asp Val Arg Ser Ile Ser Leu
1415 1420
<210> 4
<211> 5413
<212> DNA
<213> Lipomyces starkeyi
<220>
<221> misc_feature
<222> (1414)..(1433)
<223> n is a, c, g, or t
<220>
<221> misc_feature
<222> (2114)..(2133)
<223> n is a, c, g, or t
<400> 4
atggtgggtt tccggcttac gatagtcttg actcttggtc tccatttgtt ccaggcagca 60
tttgctcaaa cctacaatga gctctatcgc cctcagtatc actttactcc agctgaaaac 120
tggatgaatg atcccaacgg tcttttatat tacaatggcg tctaccatct gtactatcag 180
tacaacccag gaggcaacac ctggggagct atgtcttggg gccatgccac cagcactgac 240
ctgactcact ggaatcctga gcctgtggcc ctcctcgctc gtggctaccc aggtgatgtc 300
actgagatgt ttttctctgg ctctgctgtt gccgataccc agaacacaag cggctttggt 360
tctagtggaa acgtgccatt tgttgcaatg tatacttcct atgtaagtat atgaagtcct 420
tgcagccggc tactctaacg ctcttggggc ttagtaccct gcgtcccaga acctacccag 480
tggcaagtca gtcaacggcg ggcagcaagc gcagtcaatt gcctacagtt tggacgaggg 540
cctgacatgg acaacctacg acgccgctaa tcctgtcatt cttaaccctc ccgccccata 600
tgcagaccaa tggcaaaact tccgagatcc attcgtgttc tggcacgaag ccagccagat 660
gtggatctca gtggtttcgc tggcccaact tcaaaaatta cttatttaca cctccccgaa 720
cctcaaggat tggacttacg ccagcgaatt tggtccttgg aatgcagtag gaggtgtttg 780
ggagtgtcct agcatctttc cacttgccgt cgacggagat gacgccaata ttaaatgggt 840
tatgcaaatc gggctcaacc ctggcgggcc ccctggagtg actggctcag gaatgcagta 900
tattgtggga acgtttgatg gaacaaattt tgttgcggat tccaactctc cgccctcggc 960
acctacatcc acaagtaccc tgaaccctga aacctcaata tccatcactt tcacaacgac 1020
aacagcaact gcgactgcga ctgcaactgg agacatcgtc tttcaagatt ttgaaggcac 1080
cggggacttc gcgtctcgcg gctgggttgg cactggaggg ttgcttggtg ctgctcccgc 1140
tcaagggact cttgcgggac aacaaacggt cactggatac gccggaagtc agctagtcaa 1200
tacctttcta agcggagatt ctacaactgg cacgctcaca tcccccgctt ttaccatatc 1260
acttccttat atcaatttcc ttatcggtgg cgggaatgct ccgggcacgg aatgcatcaa 1320
cctcattgtc caagaccagg ttgtacggac ggcgacaggc gcgaatgcag aacaactcat 1380
accagaaacc tgggatgtca cggacctgat aggnnnnnnn nnnnnnnnnn nnnacggaat 1440
gcatcaacct cattgtccaa gaccaggtgt acggacggcg acaggcgcga atgcagaaca 1500
actcatacca gaaacctggg atgtcacaga cctgatgggc cgaactgctg tctttgagat 1560
cgtggatcag gaaacaggtg gctgggggca catattgatc gatcagatta ccttcacagg 1620
taatccagct ggagacatca cctttcaaga ttttgaaggc accggtgact acgcgtctcg 1680
cggctgggtt ggcactggag ggttgcttgg tgctgctccc gctcaaggga ctcttgcggg 1740
acaacaaacg gtcactggat acgccggaag tcagctagtc aatacctttc taagcggaga 1800
ttctacaact ggcacgctca catcccccgc ttttaccata tcacttcctt atatcaattt 1860
ccttatcggt ggcgggaatg ctccgggcac ggaatgcatc aacctcattg tccaagacca 1920
ggttgtacgg acggcgacag gcgcgaatgc agaacaactc ataccagaaa cctgggatgt 1980
cacagacctg atgggccgaa ctgctgtctt tgagatcgtg gatcaggaaa caggtggctg 2040
ggggcacata ttgatcgatc agattacctt cacaggtaat ccagctggag acatcacctt 2100
tcaagatttt gaannnnnnn nnnnnnnnnn nnnagctgga gacatcacct ttcaagattt 2160
tgaaggcacc ggtgactacg cgtctcgcgg ctgggttggc actggagggt tgcttggtgc 2220
tgctcccgct caagggactc ttgcgggaca acaaacggtc actggatacg ccggaagtca 2280
gctagtcaat acctttctaa gcggagattc tacaactggc acgctcacat cccccgcttt 2340
taccatatca cttccttata tcaatttcct tatcggtggc gggaatgctc cgggcacgga 2400
atgcatcaac ctcatggtcc aagaccaggt tgtacggacg gcgacaggcg cgaatgcaga 2460
acaactcata ccagaaacct gggatgtcac ggacctgata ggccaatctg cggtcatcga 2520
gattgttgat cttagtacgg ctggctgggg gcacatattg atcgatcaga ttaccttcac 2580
aggcagtacc agcaccaaca acctccttaa acgcagtgat actagcgata cttgggattt 2640
caatggtact agcacttttg cggactatgg ttggactgct actggagatt tgattggaat 2700
ggggccagtc cagggcacac ttgcaggaca acaggttgtg actgggtata tgggaaactt 2760
cgtcaacaca tttttgaacg gagatgctac cactggaaca ctcacgtccc ccactttcac 2820
cataactcag atgaagatta actttctcat cggtggtggc aatatgcctg gagtggaatg 2880
catcaacctc atggtccaag accaggttgt acgaacggct acaggcgctg atgcagaaca 2940
actcatacca gaaacctggg atgtcacgga cctgataggc caatctgcgg tcatcgagat 3000
tgttgatctt agtacggctg gctgggggca cattctgatc gatgagattt ccttctcaaa 3060
catatcaatt gagccatatg ggcccaactg gatggattat gggccagact tctacgctgc 3120
aacaacgttc aatggattat catccacaaa tcaaattgat attgcgtgga tgaacaattg 3180
gcaatacgct agcgtgatcc ctacttctcc atggcgcggc atgctatcag ttgcacggaa 3240
gctttcgctc aagacaatcg acgagaggcc aagactgatc cagcaaccta cggcaaactg 3300
gaccagtctg caaacaacaa cgtactctaa cacctttgat acagtggctg aaggcaatca 3360
gcttgtacaa ctctccggaa aattgcttga tatcacagtg gccttttcag acatagttgc 3420
aggatcatcc tcatctcaat tcggcataat tctcagggca acttccgacc tagcacaaca 3480
aacacgaatt ggctatgaat ttaccacaga gaggcttttt gttgatcgaa caatatctgg 3540
aaatgttggc ttcgacggga catttcccaa cacctattat gctcctttgg cgacctccga 3600
tgatggccaa gtcacaatgc gcattcttct tgactggtcc tccgttgaag tctttggggg 3660
acagggggag gtcacaatat ctgctcaaat ctttcctcag gacactggta ttgatgtccg 3720
gcttttctcc gtagggggaa atacaaataa tgtcacgatt gatgcaacgg tacttgattc 3780
agcttatgat tcatccacac caagtacttc tctcagtacg agcttgactt acaccgaaac 3840
tgccaccatc atgagtaaca ccagcactac ctctgtaggt agcaccctaa ccactagtac 3900
aataaccgcc actagcgcta gccctacgtc cacggcgccc tacgattttc gtcctgtttt 3960
ccatttcgtg ccagaagaga actggatgaa tgagcccaat ggactgatca aaatcggccc 4020
tacctggcac cttttctttc aacacaaccc aactggaaac ttttggggca acttaagttg 4080
gggacatgcc actagcactg accttgtgtc ctggaattat gaaccgattg caatttcgag 4140
cgcagatggg atatgggctt tcacaggaac ctcttacttt gatgcagaga atctctcggg 4200
gcttggcacg tcatcaaacc cgccgtacct tgccttttat actggctacg ccccctcaag 4260
tggcgtacag gatcaaaggc ttgcgtatag cttagaccag ggagcgactt atacgaagta 4320
ccagggcaat ccaatcatac cacaaagcca agaagcgcca cacgatataa ccgggggtct 4380
ggagatacgt gatccaaaag tgttctatca cagcccgacg agcgaatggg tcatggttct 4440
ggcgcacggg ggacaaaaca aagtatcgtt ctggacgtct acagatacaa cgaactggac 4500
ctgggtaagt gacttcaccg caagcaatat tgtgggtttc cctggtggaa tttcaggttg 4560
ggaggtgcca gactttttcg aacttcagat tgaaggtact acacaaacga aatgggtgtt 4620
gattgtgact cctgccgctg gatcgcctgc tggtggaaat ggagtctttg cactcactgg 4680
atctttcgac ggctccgtat ttacagcgga cacggttgat cctaccacgc tatggctcga 4740
ttatggtcgc gattgggatg gggccatgag ttgggaaaac gtacctgctt cggacgggcg 4800
taggattctt gctgcagtta tgaacagtta tggtgttaac cccccaacca atacgtggaa 4860
gggaatgctt tcgttccctc gaactctgga gctcacgcaa ctgaatggta aattgcaatt 4920
ccttcaactg cccgtgagcg aactagacgg ggtcagcact tcagttgcga ctatcacgaa 4980
tcagactctt gcaccaggac aaacgttgct ctccaacatc cattcacggc aattggatat 5040
ccgtattacg tttgttccta cccagggctc gacactgtct ctctccgttc ggaagggagg 5100
atctcaacag accgtgattg aatatatcca gtccaacaat caactttccg tcgatcgcaa 5160
tgcaagtgga gacatttcat acgatcctgc tgctggcggt gtccacacgg ccgctctcca 5220
gaccgatgcc aatgggaagg tgcaattgcg agtattggtt gatgaatgtt ccattgaggt 5280
ttttggcggg caaggggagg cggtgatctc tgatttgata ttccccgata tttcctcgga 5340
cggcctcgct ttgtccacta gtcaaggtaa cgtggtattg gaatcagtcg acgtgcgatc 5400
gatttcgctc tga 5413
<210> 5
<211> 882
<212> PRT
<213> Lipomyces starkeyi
<400> 5
Gln Thr Tyr Asn Glu Leu Tyr Arg Pro Gln Tyr His Phe Thr Pro Ala
1 5 10 15
Glu Asn Trp Met Asn Asp Pro Asn Gly Leu Leu Tyr Tyr Asn Gly Val
20 25 30
Tyr His Leu Tyr Tyr Gln Tyr Asn Pro Gly Gly Asn Thr Trp Gly Ala
35 40 45
Met Ser Trp Gly His Ala Thr Ser Thr Asp Leu Thr His Trp Asn Pro
50 55 60
Glu Pro Val Ala Leu Leu Ala Arg Gly Tyr Pro Gly Asp Val Thr Glu
65 70 75 80
Met Phe Phe Ser Gly Ser Ala Val Ala Asp Thr Gln Asn Thr Ser Gly
85 90 95
Phe Gly Ser Ser Gly Asn Val Pro Phe Val Ala Met Tyr Thr Ser Tyr
100 105 110
Tyr Pro Ala Ser Gln Asn Leu Pro Ser Gly Lys Ser Val Asn Gly Gly
115 120 125
Gln Gln Ala Gln Ser Ile Ala Tyr Ser Leu Asp Glu Gly Leu Thr Trp
130 135 140
Thr Thr Tyr Asp Ala Ala Asn Pro Val Ile Leu Asn Pro Pro Ala Pro
145 150 155 160
Tyr Ala Asp Gln Trp Gln Asn Phe Arg Asp Pro Phe Val Phe Trp His
165 170 175
Glu Ala Ser Gln Met Trp Ile Ser Val Val Ser Leu Ala Gln Leu Gln
180 185 190
Lys Leu Leu Ile Tyr Thr Ser Pro Asn Leu Lys Asp Trp Thr Tyr Ala
195 200 205
Ser Glu Phe Gly Pro Trp Asn Ala Val Gly Gly Val Trp Glu Cys Pro
210 215 220
Ser Ile Phe Pro Leu Ala Val Asp Gly Asp Asp Ala Asn Ile Lys Trp
225 230 235 240
Val Met Gln Ile Gly Leu Asn Pro Gly Gly Pro Pro Gly Val Thr Gly
245 250 255
Ser Gly Met Gln Tyr Ile Val Gly Thr Phe Asp Gly Thr Asn Phe Val
260 265 270
Ala Asp Ser Asn Ser Pro Pro Ser Ala Pro Thr Ser Thr Ser Thr Leu
275 280 285
Asn Pro Glu Thr Ser Ile Ser Ile Thr Phe Thr Thr Thr Thr Ala Thr
290 295 300
Ala Thr Ala Thr Ala Thr Gly Asp Ile Val Phe Gln Asp Phe Glu Gly
305 310 315 320
Thr Gly Asp Phe Ala Ser Arg Gly Trp Val Gly Thr Gly Gly Leu Leu
325 330 335
Gly Ala Ala Pro Ala Gln Gly Thr Leu Ala Gly Gln Gln Thr Val Thr
340 345 350
Gly Tyr Ala Gly Ser Gln Leu Leu Val Asn Thr Phe Leu Ser Gly Asp
355 360 365
Ser Thr Thr Gly Thr Leu Thr Ser Pro Ala Phe Thr Ile Ser Leu Pro
370 375 380
Tyr Ile Asn Phe Leu Ile Gly Gly Gly Asn Ala Pro Gly Thr Glu Cys
385 390 395 400
Ile Asn Leu Met Val Gln Asp Gln Val Val Arg Thr Ala Thr Gly Ala
405 410 415
Asn Ala Glu Gln Leu Ile Pro Glu Thr Trp Asp Val Thr Asp Leu Ile
420 425 430
Gly Gln Ser Ala Val Ile Glu Ile Val Asp Leu Ser Thr Ala Gly Trp
435 440 445
Gly His Ile Leu Ile Asp Gln Ile Thr Phe Thr Gly Ser Thr Ser Thr
450 455 460
Asn Asn Leu Leu Lys Arg Ser Asp Thr Ser Asp Thr Trp Asp Phe Asn
465 470 475 480
Gly Thr Ser Thr Phe Ala Asp Tyr Gly Trp Thr Ala Thr Gly Asp Leu
485 490 495
Ile Gly Met Gly Pro Val Gln Gly Thr Leu Ala Gly Gln Gln Val Val
500 505 510
Thr Gly Tyr Met Gly Asn Phe Val Asn Thr Phe Leu Asn Gly Asp Ala
515 520 525
Thr Thr Gly Thr Leu Thr Ser Pro Thr Phe Thr Ile Thr Gln Met Lys
530 535 540
Ile Asn Phe Leu Ile Gly Gly Gly Asn Met Pro Gly Val Glu Cys Ile
545 550 555 560
Asn Leu Met Val Gln Asp Gln Val Val Arg Thr Ala Thr Gly Ala Asp
565 570 575
Ala Glu Gln Leu Ile Pro Glu Thr Trp Asp Val Thr Asp Leu Ile Gly
580 585 590
Gln Ser Ala Val Ile Glu Ile Val Asp Leu Ser Thr Ala Gly Trp Gly
595 600 605
His Ile Leu Ile Asp Glu Ile Ser Phe Ser Asn Ile Ser Ile Glu Pro
610 615 620
Tyr Gly Pro Asn Trp Met Asp Tyr Gly Pro Asp Phe Tyr Ala Ala Thr
625 630 635 640
Thr Phe Asn Gly Leu Ser Ser Thr Asn Gln Ile Asp Ile Ala Trp Met
645 650 655
Asn Asn Trp Gln Tyr Ala Ser Val Ile Pro Thr Ser Pro Trp Arg Gly
660 665 670
Met Leu Ser Val Ala Arg Lys Leu Ser Leu Lys Thr Ile Asp Glu Arg
675 680 685
Pro Arg Leu Ile Gln Gln Pro Thr Ala Asn Trp Thr Ser Leu Gln Thr
690 695 700
Thr Thr Tyr Ser Asn Thr Phe Asp Thr Val Ala Glu Gly Asn Gln Leu
705 710 715 720
Val Gln Leu Ser Gly Lys Leu Leu Asp Ile Thr Val Ala Phe Ser Asp
725 730 735
Ile Val Ala Gly Ser Ser Ser Ser Gln Phe Gly Ile Ile Leu Arg Ala
740 745 750
Thr Ser Asp Leu Ala Gln Gln Thr Arg Ile Gly Tyr Glu Phe Thr Thr
755 760 765
Glu Arg Leu Phe Val Asp Arg Thr Ile Ser Gly Asn Val Gly Phe Asp
770 775 780
Gly Thr Phe Pro Asn Thr Tyr Tyr Ala Pro Leu Ala Thr Ser Asp Asp
785 790 795 800
Gly Gln Val Thr Met Arg Ile Leu Leu Asp Trp Ser Ser Val Glu Val
805 810 815
Phe Gly Gly Gln Gly Glu Val Thr Ile Ser Ala Gln Ile Phe Pro Gln
820 825 830
Asp Thr Gly Ile Asp Val Arg Leu Phe Ser Val Gly Gly Asn Thr Asn
835 840 845
Asn Val Thr Ile Asp Ala Thr Val Leu Asp Ser Ala Tyr Asp Ser Ser
850 855 860
Thr Pro Ser Thr Ser Leu Ser Thr Ser Leu Thr Tyr Thr Glu Thr Ala
865 870 875 880
Thr Ile
<210> 6
<211> 2646
<212> DNA
<213> Lipomyces starkeyi
<400> 6
caaacctaca atgagctcta tcgccctcag tatcacttta ctccagctga aaactggatg 60
aatgatccca acggtctttt atattacaat ggcgtctacc atctgtacta tcagtacaac 120
ccaggaggca acacctgggg agctatgtct tggggccatg ccaccagcac tgacctgact 180
cactggaatc ctgagcctgt ggccctcctc gctcgtggct acccaggtga tgtcactgag 240
atgtttttct ctggctctgc tgttgccgat acccagaaca caagcggctt tggttctagt 300
ggaaacgtgc catttgttgc aatgtatact tcctattacc ctgcgtccca gaacctaccc 360
agtggcaagt cagtcaacgg cgggcagcaa gcgcagtcaa ttgcctacag tttggacgag 420
ggcctgacat ggacaaccta cgacgccgct aatcctgtca ttcttaaccc tcccgcccca 480
tatgcagacc aatggcaaaa cttccgagat ccattcgtgt tctggcacga agccagccag 540
atgtggatct cagtggtttc gctggcccaa cttcaaaaat tacttattta cacctccccg 600
aacctcaagg attggactta cgccagcgaa tttggtcctt ggaatgcagt aggaggtgtt 660
tgggagtgtc ctagcatctt tccacttgcc gtcgacggag atgacgccaa tattaaatgg 720
gttatgcaaa tcgggctcaa ccctggcggg ccccctggag tgactggctc aggaatgcag 780
tatattgtgg gaacgtttga tggaacaaat tttgttgcgg attccaactc tccgccctcg 840
gcacctacat ccacaagtac cctgaaccct gaaacctcaa tatccatcac tttcacaacg 900
acaacagcaa ctgcgactgc gactgcaact ggagacatcg tctttcaaga ttttgaaggc 960
accggggact tcgcgtctcg cggctgggtt ggcactggag ggttgcttgg tgctgctccc 1020
gctcaaggga ctcttgcggg acaacaaacg gtcactggat acgccggaag tcagctacta 1080
gtcaatacct ttctaagcgg agattctaca actggcacgc tcacatcccc cgcttttacc 1140
atatcacttc cttatatcaa tttccttatc ggtggcggga atgctccggg cacggaatgc 1200
atcaacctca tggtccaaga ccaggttgta cggacggcga caggcgcgaa tgcagaacaa 1260
ctcataccag aaacctggga tgtcacggac ctgataggcc aatctgcggt catcgagatt 1320
gttgatctta gtacggctgg ctgggggcac atattgatcg atcagattac cttcacaggc 1380
agtaccagca ccaacaacct ccttaaacgc agtgatacta gcgatacttg ggatttcaat 1440
ggtactagca cttttgcgga ctatggttgg actgctactg gagatttgat tggaatgggg 1500
ccagtccagg gcacacttgc aggacaacag gttgtgactg ggtatatggg aaacttcgtc 1560
aacacatttt tgaacggaga tgctaccact ggaacactca cgtcccccac tttcaccata 1620
actcagatga agattaactt tctcatcggt ggtggcaata tgcctggagt ggaatgcatc 1680
aacctcatgg tccaagacca ggttgtacga acggctacag gcgctgatgc agaacaactc 1740
ataccagaaa cctgggatgt cacggacctg ataggccaat ctgcggtcat cgagattgtt 1800
gatcttagta cggctggctg ggggcacatt ctgatcgatg agatttcctt ctcaaacata 1860
tcaattgagc catatgggcc caactggatg gattatgggc cagacttcta cgctgcaaca 1920
acgttcaatg gattatcatc cacaaatcaa attgatattg cgtggatgaa caattggcaa 1980
tacgctagcg tgatccctac ttctccatgg cgcggcatgc tatcagttgc acggaagctt 2040
tcgctcaaga caatcgacga gaggccaaga ctgatccagc aacctacggc aaactggacc 2100
agtctgcaaa caacaacgta ctctaacacc tttgatacag tggctgaagg caatcagctt 2160
gtacaactct ccggaaaatt gcttgatatc acagtggcct tttcagacat agttgcagga 2220
tcatcctcat ctcaattcgg cataattctc agggcaactt ccgacctagc acaacaaaca 2280
cgaattggct atgaatttac cacagagagg ctttttgttg atcgaacaat atctggaaat 2340
gttggcttcg acgggacatt tcccaacacc tattatgctc ctttggcgac ctccgatgat 2400
ggccaagtca caatgcgcat tcttcttgac tggtcctccg ttgaagtctt tgggggacag 2460
ggggaggtca caatatctgc tcaaatcttt cctcaggaca ctggtattga tgtccggctt 2520
ttctccgtag ggggaaatac aaataatgtc acgattgatg caacggtact tgattcagct 2580
tatgattcat ccacaccaag tacttctctc agtacgagct tgacttacac cgaaactgcc 2640
accatc 2646
<210> 7
<211> 1402
<212> PRT
<213> Lipomyces starkeyi
<400> 7
Gln Thr Tyr Asn Glu Leu Tyr Arg Pro Gln Tyr His Phe Thr Pro Ala
1 5 10 15
Glu Asn Trp Met Asn Asp Pro Asn Gly Leu Leu Tyr Tyr Asn Gly Val
20 25 30
Tyr His Leu Tyr Tyr Gln Tyr Asn Pro Gly Gly Asn Thr Trp Gly Ala
35 40 45
Met Ser Trp Gly His Ala Thr Ser Thr Asp Leu Thr His Trp Asn Pro
50 55 60
Glu Pro Val Ala Leu Leu Ala Arg Gly Tyr Pro Gly Asp Val Thr Glu
65 70 75 80
Met Phe Phe Ser Gly Ser Ala Val Ala Asp Thr Gln Asn Thr Ser Gly
85 90 95
Phe Gly Ser Ser Gly Asn Val Pro Phe Val Ala Met Tyr Thr Ser Tyr
100 105 110
Tyr Pro Ala Ser Gln Asn Leu Pro Ser Gly Lys Ser Val Asn Gly Gly
115 120 125
Gln Gln Ala Gln Ser Ile Ala Tyr Ser Leu Asp Glu Gly Leu Thr Trp
130 135 140
Thr Thr Tyr Asp Ala Ala Asn Pro Val Ile Leu Asn Pro Pro Ala Pro
145 150 155 160
Tyr Ala Asp Gln Trp Gln Asn Phe Arg Asp Pro Phe Val Phe Trp His
165 170 175
Glu Ala Ser Gln Met Trp Ile Ser Val Val Ser Leu Ala Gln Leu Gln
180 185 190
Lys Leu Leu Ile Tyr Thr Ser Pro Asn Leu Lys Asp Trp Thr Tyr Ala
195 200 205
Ser Glu Phe Gly Pro Trp Asn Ala Val Gly Gly Val Trp Glu Cys Pro
210 215 220
Ser Ile Phe Pro Leu Ala Val Asp Gly Asp Asp Ala Asn Ile Lys Trp
225 230 235 240
Val Met Gln Ile Gly Leu Asn Pro Gly Gly Pro Pro Gly Val Thr Gly
245 250 255
Ser Gly Met Gln Tyr Ile Val Gly Thr Phe Asp Gly Thr Asn Phe Val
260 265 270
Ala Asp Ser Asn Ser Pro Pro Ser Ala Pro Thr Ser Thr Ser Thr Leu
275 280 285
Asn Pro Glu Thr Ser Ile Ser Ile Thr Phe Thr Thr Thr Thr Ala Thr
290 295 300
Ala Thr Ala Thr Ala Thr Gly Asp Ile Val Phe Gln Asp Phe Glu Gly
305 310 315 320
Thr Gly Asp Phe Ala Ser Arg Gly Trp Val Gly Thr Gly Gly Leu Leu
325 330 335
Gly Ala Ala Pro Ala Gln Gly Thr Leu Ala Gly Gln Gln Thr Val Thr
340 345 350
Gly Tyr Ala Gly Ser Gln Leu Leu Val Asn Thr Phe Leu Ser Gly Asp
355 360 365
Ser Thr Thr Gly Thr Leu Thr Ser Pro Ala Phe Thr Ile Ser Leu Pro
370 375 380
Tyr Ile Asn Phe Leu Ile Gly Gly Gly Asn Ala Pro Gly Thr Glu Cys
385 390 395 400
Ile Asn Leu Met Val Gln Asp Gln Val Val Arg Thr Ala Thr Gly Ala
405 410 415
Asn Ala Glu Gln Leu Ile Pro Glu Thr Trp Asp Val Thr Asp Leu Ile
420 425 430
Gly Gln Ser Ala Val Ile Glu Ile Val Asp Leu Ser Thr Ala Gly Trp
435 440 445
Gly His Ile Leu Ile Asp Gln Ile Thr Phe Thr Gly Ser Thr Ser Thr
450 455 460
Asn Asn Leu Leu Lys Arg Ser Asp Thr Ser Asp Thr Trp Asp Phe Asn
465 470 475 480
Gly Thr Ser Thr Phe Ala Asp Tyr Gly Trp Thr Ala Thr Gly Asp Leu
485 490 495
Ile Gly Met Gly Pro Val Gln Gly Thr Leu Ala Gly Gln Gln Val Val
500 505 510
Thr Gly Tyr Met Gly Asn Phe Val Asn Thr Phe Leu Asn Gly Asp Ala
515 520 525
Thr Thr Gly Thr Leu Thr Ser Pro Thr Phe Thr Ile Thr Gln Met Lys
530 535 540
Ile Asn Phe Leu Ile Gly Gly Gly Asn Met Pro Gly Val Glu Cys Ile
545 550 555 560
Asn Leu Met Val Gln Asp Gln Val Val Arg Thr Ala Thr Gly Ala Asp
565 570 575
Ala Glu Gln Leu Ile Pro Glu Thr Trp Asp Val Thr Asp Leu Ile Gly
580 585 590
Gln Ser Ala Val Ile Glu Ile Val Asp Leu Ser Thr Ala Gly Trp Gly
595 600 605
His Ile Leu Ile Asp Glu Ile Ser Phe Ser Asn Ile Ser Ile Glu Pro
610 615 620
Tyr Gly Pro Asn Trp Met Asp Tyr Gly Pro Asp Phe Tyr Ala Ala Thr
625 630 635 640
Thr Phe Asn Gly Leu Ser Ser Thr Asn Gln Ile Asp Ile Ala Trp Met
645 650 655
Asn Asn Trp Gln Tyr Ala Ser Val Ile Pro Thr Ser Pro Trp Arg Gly
660 665 670
Met Leu Ser Val Ala Arg Lys Leu Ser Leu Lys Thr Ile Asp Glu Arg
675 680 685
Pro Arg Leu Ile Gln Gln Pro Thr Ala Asn Trp Thr Ser Leu Gln Thr
690 695 700
Thr Thr Tyr Ser Asn Thr Phe Asp Thr Val Ala Glu Gly Asn Gln Leu
705 710 715 720
Val Gln Leu Ser Gly Lys Leu Leu Asp Ile Thr Val Ala Phe Ser Asp
725 730 735
Ile Val Ala Gly Ser Ser Ser Ser Gln Phe Gly Ile Ile Leu Arg Ala
740 745 750
Thr Ser Asp Leu Ala Gln Gln Thr Arg Ile Gly Tyr Glu Phe Thr Thr
755 760 765
Glu Arg Leu Phe Val Asp Arg Thr Ile Ser Gly Asn Val Gly Phe Asp
770 775 780
Gly Thr Phe Pro Asn Thr Tyr Tyr Ala Pro Leu Ala Thr Ser Asp Asp
785 790 795 800
Gly Gln Val Thr Met Arg Ile Leu Leu Asp Trp Ser Ser Val Glu Val
805 810 815
Phe Gly Gly Gln Gly Glu Val Thr Ile Ser Ala Gln Ile Phe Pro Gln
820 825 830
Asp Thr Gly Ile Asp Val Arg Leu Phe Ser Val Gly Gly Asn Thr Asn
835 840 845
Asn Val Thr Ile Asp Ala Thr Val Leu Asp Ser Ala Tyr Asp Ser Ser
850 855 860
Thr Pro Ser Thr Ser Leu Ser Thr Ser Leu Thr Tyr Thr Glu Thr Ala
865 870 875 880
Thr Ile Met Ser Asn Thr Ser Thr Thr Ser Val Gly Ser Thr Leu Thr
885 890 895
Thr Ser Thr Ile Thr Ala Thr Ser Ala Ser Pro Thr Ser Thr Ala Pro
900 905 910
Tyr Asp Phe Arg Pro Val Phe His Phe Val Pro Glu Glu Asn Trp Met
915 920 925
Asn Glu Pro Asn Gly Leu Ile Lys Ile Gly Pro Thr Trp His Leu Phe
930 935 940
Phe Gln His Asn Pro Thr Gly Asn Phe Trp Gly Asn Leu Ser Trp Gly
945 950 955 960
His Ala Thr Ser Thr Asp Leu Val Ser Trp Asn Tyr Glu Pro Ile Ala
965 970 975
Ile Ser Ser Ala Asp Gly Ile Trp Ala Phe Thr Gly Thr Ser Tyr Phe
980 985 990
Asp Ala Glu Asn Leu Ser Gly Leu Gly Thr Ser Ser Asn Pro Pro Tyr
995 1000 1005
Leu Ala Phe Tyr Thr Gly Tyr Ala Pro Ser Ser Gly Val Gln Asp
1010 1015 1020
Gln Arg Leu Ala Tyr Ser Leu Asp Gln Gly Ala Thr Tyr Thr Lys
1025 1030 1035
Tyr Gln Gly Asn Pro Ile Ile Pro Gln Ser Gln Glu Ala Pro His
1040 1045 1050
Asp Ile Thr Gly Gly Leu Glu Ile Arg Asp Pro Lys Val Phe Tyr
1055 1060 1065
His Ser Pro Thr Ser Glu Trp Val Met Val Leu Ala His Gly Gly
1070 1075 1080
Gln Asn Lys Val Ser Phe Trp Thr Ser Thr Asp Thr Thr Asn Trp
1085 1090 1095
Thr Trp Val Ser Asp Phe Thr Ala Ser Asn Ile Val Gly Phe Pro
1100 1105 1110
Gly Gly Ile Ser Gly Trp Glu Val Pro Asp Phe Phe Glu Leu Gln
1115 1120 1125
Ile Glu Gly Thr Thr Gln Thr Lys Trp Val Leu Ile Val Thr Pro
1130 1135 1140
Ala Ala Gly Ser Pro Ala Gly Gly Asn Gly Val Phe Ala Leu Thr
1145 1150 1155
Gly Ser Phe Asp Gly Ser Val Phe Thr Ala Asp Thr Val Asp Pro
1160 1165 1170
Thr Thr Leu Trp Leu Asp Tyr Gly Arg Asp Trp Asp Gly Ala Met
1175 1180 1185
Ser Trp Glu Asn Val Pro Ala Ser Asp Gly Arg Arg Ile Leu Ala
1190 1195 1200
Ala Val Met Asn Ser Tyr Gly Val Asn Pro Pro Thr Asn Thr Trp
1205 1210 1215
Lys Gly Met Leu Ser Phe Pro Arg Thr Leu Glu Leu Thr Gln Leu
1220 1225 1230
Asn Gly Lys Leu Gln Phe Leu Gln Leu Pro Val Ser Glu Leu Asp
1235 1240 1245
Gly Val Ser Thr Ser Val Ala Thr Ile Thr Asn Gln Thr Leu Ala
1250 1255 1260
Pro Gly Gln Thr Leu Leu Ser Asn Ile His Ser Arg Gln Leu Asp
1265 1270 1275
Ile Arg Ile Thr Phe Val Pro Thr Gln Gly Ser Thr Leu Ser Leu
1280 1285 1290
Ser Val Arg Lys Gly Gly Ser Gln Gln Thr Val Ile Glu Tyr Ile
1295 1300 1305
Gln Ser Asn Asn Gln Leu Ser Val Asp Arg Asn Ala Ser Gly Asp
1310 1315 1320
Ile Ser Tyr Asp Pro Ala Ala Gly Gly Val His Thr Ala Ala Leu
1325 1330 1335
Gln Thr Asp Ala Asn Gly Lys Val Gln Leu Arg Val Leu Val Asp
1340 1345 1350
Glu Cys Ser Ile Glu Val Phe Gly Gly Gln Gly Glu Ala Val Ile
1355 1360 1365
Ser Asp Leu Ile Phe Pro Asp Ile Ser Ser Asp Gly Leu Ala Leu
1370 1375 1380
Ser Thr Ser Gln Gly Asn Val Val Leu Glu Ser Val Asp Val Arg
1385 1390 1395
Ser Ile Ser Leu
1400
<210> 8
<211> 4209
<212> DNA
<213> Lipomyces starkeyi
<400> 8
caaacctaca atgagctcta tcgccctcag tatcacttta ctccagctga aaactggatg 60
aatgatccca acggtctttt atattacaat ggcgtctacc atctgtacta tcagtacaac 120
ccaggaggca acacctgggg agctatgtct tggggccatg ccaccagcac tgacctgact 180
cactggaatc ctgagcctgt ggccctcctc gctcgtggct acccaggtga tgtcactgag 240
atgtttttct ctggctctgc tgttgccgat acccagaaca caagcggctt tggttctagt 300
ggaaacgtgc catttgttgc aatgtatact tcctattacc ctgcgtccca gaacctaccc 360
agtggcaagt cagtcaacgg cgggcagcaa gcgcagtcaa ttgcctacag tttggacgag 420
ggcctgacat ggacaaccta cgacgccgct aatcctgtca ttcttaaccc tcccgcccca 480
tatgcagacc aatggcaaaa cttccgagat ccattcgtgt tctggcacga agccagccag 540
atgtggatct cagtggtttc gctggcccaa cttcaaaaat tacttattta cacctccccg 600
aacctcaagg attggactta cgccagcgaa tttggtcctt ggaatgcagt aggaggtgtt 660
tgggagtgtc ctagcatctt tccacttgcc gtcgacggag atgacgccaa tattaaatgg 720
gttatgcaaa tcgggctcaa ccctggcggg ccccctggag tgactggctc aggaatgcag 780
tatattgtgg gaacgtttga tggaacaaat tttgttgcgg attccaactc tccgccctcg 840
gcacctacat ccacaagtac cctgaaccct gaaacctcaa tatccatcac tttcacaacg 900
acaacagcaa ctgcgactgc gactgcaact ggagacatcg tctttcaaga ttttgaaggc 960
accggggact tcgcgtctcg cggctgggtt ggcactggag ggttgcttgg tgctgctccc 1020
gctcaaggga ctcttgcggg acaacaaacg gtcactggat acgccggaag tcagctacta 1080
gtcaatacct ttctaagcgg agattctaca actggcacgc tcacatcccc cgcttttacc 1140
atatcacttc cttatatcaa tttccttatc ggtggcggga atgctccggg cacggaatgc 1200
atcaacctca tggtccaaga ccaggttgta cggacggcga caggcgcgaa tgcagaacaa 1260
ctcataccag aaacctggga tgtcacggac ctgataggcc aatctgcggt catcgagatt 1320
gttgatctta gtacggctgg ctgggggcac atattgatcg atcagattac cttcacaggc 1380
agtaccagca ccaacaacct ccttaaacgc agtgatacta gcgatacttg ggatttcaat 1440
ggtactagca cttttgcgga ctatggttgg actgctactg gagatttgat tggaatgggg 1500
ccagtccagg gcacacttgc aggacaacag gttgtgactg ggtatatggg aaacttcgtc 1560
aacacatttt tgaacggaga tgctaccact ggaacactca cgtcccccac tttcaccata 1620
actcagatga agattaactt tctcatcggt ggtggcaata tgcctggagt ggaatgcatc 1680
aacctcatgg tccaagacca ggttgtacga acggctacag gcgctgatgc agaacaactc 1740
ataccagaaa cctgggatgt cacggacctg ataggccaat ctgcggtcat cgagattgtt 1800
gatcttagta cggctggctg ggggcacatt ctgatcgatg agatttcctt ctcaaacata 1860
tcaattgagc catatgggcc caactggatg gattatgggc cagacttcta cgctgcaaca 1920
acgttcaatg gattatcatc cacaaatcaa attgatattg cgtggatgaa caattggcaa 1980
tacgctagcg tgatccctac ttctccatgg cgcggcatgc tatcagttgc acggaagctt 2040
tcgctcaaga caatcgacga gaggccaaga ctgatccagc aacctacggc aaactggacc 2100
agtctgcaaa caacaacgta ctctaacacc tttgatacag tggctgaagg caatcagctt 2160
gtacaactct ccggaaaatt gcttgatatc acagtggcct tttcagacat agttgcagga 2220
tcatcctcat ctcaattcgg cataattctc agggcaactt ccgacctagc acaacaaaca 2280
cgaattggct atgaatttac cacagagagg ctttttgttg atcgaacaat atctggaaat 2340
gttggcttcg acgggacatt tcccaacacc tattatgctc ctttggcgac ctccgatgat 2400
ggccaagtca caatgcgcat tcttcttgac tggtcctccg ttgaagtctt tgggggacag 2460
ggggaggtca caatatctgc tcaaatcttt cctcaggaca ctggtattga tgtccggctt 2520
ttctccgtag ggggaaatac aaataatgtc acgattgatg caacggtact tgattcagct 2580
tatgattcat ccacaccaag tacttctctc agtacgagct tgacttacac cgaaactgcc 2640
accatcatga gtaacaccag cactacctct gtaggtagca ccctaaccac tagtacaata 2700
accgccacta gcgctagccc tacgtccacg gcgccctacg attttcgtcc tgttttccat 2760
ttcgtgccag aagagaactg gatgaatgag cccaatggac tgatcaaaat cggccctacc 2820
tggcaccttt tctttcaaca caacccaact ggaaactttt ggggcaactt aagttgggga 2880
catgccacta gcactgacct tgtgtcctgg aattatgaac cgattgcaat ttcgagcgca 2940
gatgggatat gggctttcac aggaacctct tactttgatg cagagaatct ctcggggctt 3000
ggcacgtcat caaacccgcc gtaccttgcc ttttatactg gctacgcccc ctcaagtggc 3060
gtacaggatc aaaggcttgc gtatagctta gaccagggag cgacttatac gaagtaccag 3120
ggcaatccaa tcataccaca aagccaagaa gcgccacacg atataaccgg gggtctggag 3180
atacgtgatc caaaagtgtt ctatcacagc ccgacgagcg aatgggtcat ggttctggcg 3240
cacgggggac aaaacaaagt atcgttctgg acgtctacag atacaacgaa ctggacctgg 3300
gtaagtgact tcaccgcaag caatattgtg ggtttccctg gtggaatttc aggttgggag 3360
gtgccagact ttttcgaact tcagattgaa ggtactacac aaacgaaatg ggtgttgatt 3420
gtgactcctg ccgctggatc gcctgctggt ggaaatggag tctttgcact cactggatct 3480
ttcgacggct ccgtatttac agcggacacg gttgatccta ccacgctatg gctcgattat 3540
ggtcgcgatt gggatggggc catgagttgg gaaaacgtac ctgcttcgga cgggcgtagg 3600
attcttgctg cagttatgaa cagttatggt gttaaccccc caaccaatac gtggaaggga 3660
atgctttcgt tccctcgaac tctggagctc acgcaactga atggtaaatt gcaattcctt 3720
caactgcccg tgagcgaact agacggggtc agcacttcag ttgcgactat cacgaatcag 3780
actcttgcac caggacaaac gttgctctcc aacatccatt cacggcaatt ggatatccgt 3840
attacgtttg ttcctaccca gggctcgaca ctgtctctct ccgttcggaa gggaggatct 3900
caacagaccg tgattgaata tatccagtcc aacaatcaac tttccgtcga tcgcaatgca 3960
agtggagaca tttcatacga tcctgctgct ggcggtgtcc acacggccgc tctccagacc 4020
gatgccaatg ggaaggtgca attgcgagta ttggttgatg aatgttccat tgaggttttt 4080
ggcgggcaag gggaggcggt gatctctgat ttgatattcc ccgatatttc ctcggacggc 4140
ctcgctttgt ccactagtca aggtaacgtg gtattggaat cagtcgacgt gcgatcgatt 4200
tcgctctga 4209
<210> 9
<211> 32
<212> DNA
<213> 人工序列
<400> 9
cggaattcca aacctacaat gagctctatc gc 32
<210> 10
<211> 27
<212> DNA
<213> 人工序列
<400> 10
ccctcgagga tggtggcagt ttcggtg 27
<210> 11
<211> 31
<212> DNA
<213> 人工序列
<400> 11
cggaattcat gagtaacacc agcactacct c 31
<210> 12
<211> 27
<212> DNA
<213> 人工序列
<400> 12
ccctcgaggc agagcgaaat cgatcgc 27
<210> 13
<211> 32
<212> DNA
<213> 人工序列
<400> 13
cggaattcca aacctacaat gagctctatc gc 32
<210> 14
<211> 47
<212> DNA
<213> 人工序列
<400> 14
ggttctggga cgcagggtaa taggaagtat acattgcaac aaatggc 47
<210> 15
<211> 46
<212> DNA
<213> 人工序列
<400> 15
gccatttgtt gcaatgtata cttcctatta ccctgcgtcc cagaac 46
<210> 16
<211> 42
<212> DNA
<213> 人工序列
<400> 16
cgcttagaaa ggtattgact agtagctgac ttccggcgta tc 42
<210> 17
<211> 45
<212> DNA
<213> 人工序列
<400> 17
gatacgccgg aagtcagcta ctagtcaata cctttctaag cggag 45
<210> 18
<211> 27
<212> DNA
<213> 人工序列
<400> 18
ccctcgagtc agagcgaaat cgatcgc 27

Claims (10)

1.一种内切菊粉酶,其特征在于,所述内切菊粉酶为:
(a)由SEQ ID No.1或SEQ ID No.3所示的氨基酸序列组成的蛋白质;或者,
(b)在(a)中的氨基酸序列经过取代、缺失或添加一个或几个氨基酸且具有内切菊粉酶活性的由(a)衍生的蛋白质。
2.编码权利要求1所述内切菊粉酶的基因。
3.携带权利要求2所述基因的重组质粒。
4.如权利要求3所述的重组质粒,其特征在于,所述重组质粒的载体为pET22b(+)载体。
5.携带权利要求2所述基因或权利要求3或4所述重组质粒的宿主细胞。
6.如权利要求5所述的宿主细胞,其特征在于,所述宿主细胞为大肠杆菌。
7.权利要求1所述内切菊粉酶的制备方法,其特征在于,将权利要求5或6所述宿主细胞加入到培养基中培养至OD600=0.6~0.8后,在发酵液中添加IPTG继续诱导培养10~30h,得到内切菊粉酶。
8.权利要求1所述内切菊粉酶或权利要求2所述基因或权利要求3或4所述重组质粒或权利要求5或6所述宿主细胞或权利要求7所述制备方法在生产低聚果糖方面的应用。
9.一种生产低聚果糖的方法,其特征在于,将权利要求1所述内切菊粉酶加入到含有菊粉的缓冲液中进行转化,得到低聚果糖。
10.如权利要求9所述的一种生产低聚果糖的方法,其特征在于,所述转化的温度为40~70℃、时间为0.5~2h。
CN201910359719.7A 2019-04-30 2019-04-30 一种内切菊粉酶及其在生产低聚果糖中的应用 Active CN110066777B (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201910359719.7A CN110066777B (zh) 2019-04-30 2019-04-30 一种内切菊粉酶及其在生产低聚果糖中的应用

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201910359719.7A CN110066777B (zh) 2019-04-30 2019-04-30 一种内切菊粉酶及其在生产低聚果糖中的应用

Publications (2)

Publication Number Publication Date
CN110066777A true CN110066777A (zh) 2019-07-30
CN110066777B CN110066777B (zh) 2020-10-09

Family

ID=67369657

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201910359719.7A Active CN110066777B (zh) 2019-04-30 2019-04-30 一种内切菊粉酶及其在生产低聚果糖中的应用

Country Status (1)

Country Link
CN (1) CN110066777B (zh)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112813052A (zh) * 2021-01-13 2021-05-18 云南师范大学 一种低温活性提高的外切菊粉酶突变体MutDP121ET6
CN114350637A (zh) * 2021-12-01 2022-04-15 武汉金科天成科技有限公司 内切型菊糖酶EndoINU及其制备方法、以及其应用
CN115516071A (zh) * 2020-04-21 2022-12-23 诺维信公司 包含具有果聚糖降解活性的多肽的清洁组合物
WO2023131670A3 (en) * 2022-01-07 2023-08-24 Novozymes A/S Method for providing relief from fructan or fructose induced abdominal discomfort
WO2023225459A2 (en) 2022-05-14 2023-11-23 Novozymes A/S Compositions and methods for preventing, treating, supressing and/or eliminating phytopathogenic infestations and infections

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105505899A (zh) * 2016-01-12 2016-04-20 南京工业大学 一种菊粉内切酶的制备方法及其应用
CN107217025A (zh) * 2017-06-09 2017-09-29 盐城工学院 一种产菊粉内切酶的枯草芽孢杆菌jg‑1及其制备方法和应用

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105505899A (zh) * 2016-01-12 2016-04-20 南京工业大学 一种菊粉内切酶的制备方法及其应用
CN107217025A (zh) * 2017-06-09 2017-09-29 盐城工学院 一种产菊粉内切酶的枯草芽孢杆菌jg‑1及其制备方法和应用

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
RAM S. SINGH AND RUPINDER P. SINGH: "Production of Fructooligosaccharides from Inulin by Endoinulinases and Their Prebiotic Potential", 《FOOD TECHNOLOGY AND BIOTECHNOLOGY》 *
RILEY,R. ET AL: "hypothetical protein LIPSTDRAFT_55516 [Lipomyces starkeyi NRRL Y-11557]", 《GENBANK: ODQ71402.1》 *

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115516071A (zh) * 2020-04-21 2022-12-23 诺维信公司 包含具有果聚糖降解活性的多肽的清洁组合物
CN112813052A (zh) * 2021-01-13 2021-05-18 云南师范大学 一种低温活性提高的外切菊粉酶突变体MutDP121ET6
CN112813052B (zh) * 2021-01-13 2022-08-26 云南师范大学 一种低温活性提高的外切菊粉酶突变体MutDP121ET6
CN114350637A (zh) * 2021-12-01 2022-04-15 武汉金科天成科技有限公司 内切型菊糖酶EndoINU及其制备方法、以及其应用
CN114350637B (zh) * 2021-12-01 2024-02-20 武汉金科天成科技有限公司 内切型菊糖酶EndoINU及其制备方法、以及其应用
WO2023131670A3 (en) * 2022-01-07 2023-08-24 Novozymes A/S Method for providing relief from fructan or fructose induced abdominal discomfort
WO2023225459A2 (en) 2022-05-14 2023-11-23 Novozymes A/S Compositions and methods for preventing, treating, supressing and/or eliminating phytopathogenic infestations and infections

Also Published As

Publication number Publication date
CN110066777B (zh) 2020-10-09

Similar Documents

Publication Publication Date Title
CN110066777A (zh) 一种内切菊粉酶及其在生产低聚果糖中的应用
CN111647579B (zh) 一种不耐热的外切菊粉酶突变体MutQ23Δ9及其制备和应用
CN109385413B (zh) 葡萄糖淀粉酶TlGA1931及其基因和应用
CN103555690B (zh) 一种新型果糖苷酶及其编码基因和应用
CN113862241B (zh) 一种壳聚糖酶Csncv及其突变体CsnB和应用
CN109628433A (zh) 一种具有高分泌能力的普鲁兰酶及其应用
CN102676557B (zh) 一种i型普鲁兰酶的编码基因及其重组表达和应用
CN109486794A (zh) 一种酶活提高的甲壳素酶突变体
CN111893125A (zh) 壳聚糖酶基因、壳聚糖酶及其制备方法和应用
CN110157688B (zh) 一种产麦芽五糖能力提高的直链麦芽低聚糖生成酶突变体
JP3557288B2 (ja) 還元性澱粉糖から末端にトレハロース構造を有する非還元性糖質を生成する組換え型耐熱性酵素
CN111676206A (zh) 一种α-L-鼠李糖苷酶的截短突变体及其应用
CN110373403A (zh) 耐高温中性普鲁兰酶及其应用
JPH08149980A (ja) マルトースをトレハロースに変換する組換え型耐熱性酵素
CN117625581A (zh) 一种N-乙酰氨基葡萄糖苷酶突变体Ea2F及其应用
CN116334041B (zh) 一种鼠李糖苷酶突变体及其应用
CN110184258B (zh) 一种普鲁兰酶突变体
CN110229800B (zh) 一种产麦芽六糖能力提高的直链麦芽低聚糖生成酶突变体
CN107828768A (zh) 一种l‑天冬酰胺酶突变体及其构建方法
JP3559609B2 (ja) 組換え型酵素とその製造方法並びに用途
CN101503678B (zh) 一种麦芽寡糖基海藻糖合成酶及其编码基因与应用
CN109988778A (zh) 一种蔗糖磷酸化酶基因及其应用
CN112921025B (zh) 一种差向异构酶的突变体,其编码基因、氨基酸序列及其应用
US10865405B2 (en) Maltooligosyl trehalose synthase mutant with improved thermal stability
CN112980762A (zh) 一种黑曲霉二糖磷酸化酶及其在黑曲霉二糖制备中的应用

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant