CN110184292B - 一种利用分子伴侣提高酵母细胞表面展示功能性Infliximab Fab片段的方法 - Google Patents

一种利用分子伴侣提高酵母细胞表面展示功能性Infliximab Fab片段的方法 Download PDF

Info

Publication number
CN110184292B
CN110184292B CN201910523199.9A CN201910523199A CN110184292B CN 110184292 B CN110184292 B CN 110184292B CN 201910523199 A CN201910523199 A CN 201910523199A CN 110184292 B CN110184292 B CN 110184292B
Authority
CN
China
Prior art keywords
fab
infliximab
gal1
endoplasmic reticulum
yeast cell
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.)
Active
Application number
CN201910523199.9A
Other languages
English (en)
Other versions
CN110184292A (zh
Inventor
易犁
梅萌
李俊红
汪声晨
张桂敏
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.)
Hubei University
Original Assignee
Hubei 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 Hubei University filed Critical Hubei University
Priority to CN201910523199.9A priority Critical patent/CN110184292B/zh
Publication of CN110184292A publication Critical patent/CN110184292A/zh
Application granted granted Critical
Publication of CN110184292B publication Critical patent/CN110184292B/zh
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07KPEPTIDES
    • C07K16/00Immunoglobulins [IGs], e.g. monoclonal or polyclonal antibodies
    • C07K16/18Immunoglobulins [IGs], e.g. monoclonal or polyclonal antibodies against material from animals or humans
    • C07K16/24Immunoglobulins [IGs], e.g. monoclonal or polyclonal antibodies against material from animals or humans against cytokines, lymphokines or interferons
    • C07K16/241Tumor Necrosis Factors
    • 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
    • C12N15/66General methods for inserting a gene into a vector to form a recombinant vector using cleavage and ligation; Use of non-functional linkers or adaptors, e.g. linkers containing the sequence for a restriction endonuclease
    • 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
    • C12N15/79Vectors or expression systems specially adapted for eukaryotic hosts
    • C12N15/80Vectors or expression systems specially adapted for eukaryotic hosts for fungi
    • C12N15/81Vectors or expression systems specially adapted for eukaryotic hosts for fungi for yeasts
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07KPEPTIDES
    • C07K2317/00Immunoglobulins specific features
    • C07K2317/50Immunoglobulins specific features characterized by immunoglobulin fragments
    • C07K2317/55Fab or Fab'
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07KPEPTIDES
    • C07K2319/00Fusion polypeptide
    • C07K2319/35Fusion polypeptide containing a fusion for enhanced stability/folding during expression, e.g. fusions with chaperones or thioredoxin

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Genetics & Genomics (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Bioinformatics & Cheminformatics (AREA)
  • Biotechnology (AREA)
  • General Engineering & Computer Science (AREA)
  • Molecular Biology (AREA)
  • Biomedical Technology (AREA)
  • Wood Science & Technology (AREA)
  • Zoology (AREA)
  • Biochemistry (AREA)
  • Biophysics (AREA)
  • General Health & Medical Sciences (AREA)
  • Plant Pathology (AREA)
  • Physics & Mathematics (AREA)
  • Microbiology (AREA)
  • Mycology (AREA)
  • Immunology (AREA)
  • Medicinal Chemistry (AREA)
  • Proteomics, Peptides & Aminoacids (AREA)
  • Measuring Or Testing Involving Enzymes Or Micro-Organisms (AREA)
  • Medicines Containing Antibodies Or Antigens For Use As Internal Diagnostic Agents (AREA)

Abstract

本发明公开了一种利用分子伴侣提高酵母细胞表面展示功能性Infliximab Fab片段的方法,属于抗体工程技术领域。本发明采用一种新型三启动子Fab表面展示载体来共表达内质网分子伴侣蛋白Pdi或Kar2和Infliximab的VH‑CH1以及VL‑CL两个结构域。其中VH‑CH1和VL‑CL两个结构域通过氨基端的内质网定位信号肽定位在内质网内组装成天然Fab形式片段,再通过Aga1‑Aga2酵母细胞展示系统展示到细胞表面。本发明通过共表达内质网分子伴侣蛋白Pdi或Kar2,促进了Infliximab Fab片段的VH‑CH1和VL‑CL两个结构域在内质网内的折叠组装效率,明显提高了酵母细胞表面展示Infliximab Fab片段的抗原结合能力。

Description

一种利用分子伴侣提高酵母细胞表面展示功能性Infliximab Fab片段的方法
技术领域
本发明涉及一种利用分子伴侣提高酵母细胞表面展示功能性Infliximab Fab片段的方法,属于抗体工程技术领域。
背景技术
单克隆抗体是目前最具有经济价值的生物治疗药物之一,被广泛用于治疗病毒感染、免疫疾病和癌症等。酵母细胞表面展示技术因是真核表达宿主,并且可以结合流式细胞仪的高通量筛选技术等优势,被广泛用于多种形式的抗体文库的改造和筛选。目前抗体酵母展示片段主要有两种形式,包括scFv和Fab。ScFv是由抗体重链和轻链可变区通过15-20个氨基酸短肽连接而成的具有抗体活性的最小功能结构。而Fab是由重链的VH-CH1结构域与完整的轻链VL-CL通过分子内的二硫键连接组成的抗原结合片段。Fab结构相比于scFv更稳定,更接近成熟的抗体形式,从而对抗原有较高的亲和力。
目前利用Aga1-Aga2酵母细胞展示系统产生Fab片段的方法主要有以下两种:(1)酵母双杂交法:将Fab的重链VH-CH1结构域和完整的轻链分别构建在两个酵母表达质粒上,再分别转入酵母两个单倍体细胞中,通过酵母杂交使两条链在体内组装最终将完整的Fab展示到细胞表面[Weaver-Feldhaus J.M.et al.,“Yeast mating for combinatorial Fablibrary generation and surface display”,FEBS letters,2004,564(1-2):24-34];(2)将Fab的重链VH-CH1结构域和完整的轻链分别构建在酵母表达质粒的双启动子的下游,再将构建好的质粒转入酵母细胞诱导表达,在体内组装成完整的Fab最后展示到细胞表面[Sivelle C.et al.,“Fab is the most efficient format to express functionalantibodies by yeast surface display”,mAbs,2018,10(5):720-729]。上述两种方法虽然都能达到Fab片段在酵母细胞表面展示的目的,但也存在不足之处。方法1操作繁琐,需要构建两套酵母质粒和表达体系,细胞杂交效率低的情况下会降低Fab的展示效率;方法2虽然操作简易,但是由于Fab的VH-CH1结构域和VL-CL结构域在内质网内的折叠和组装时间不足或效率不够,可能导致二硫键等形成不足,从而存在细胞表面展示的功能性Fab效率偏低问题。因此,对于Fab酵母细胞表面展示方法,特别是稳定性差和低活性的Fab展示方法,需要进一步优化,以提高功能性的Fab展示。
肿瘤坏死因子(TumorNecrosis Factor,TNF-α)是一种促炎症细胞因子,在炎症、自身免疫疾病和肿瘤发生中起着重要作用。目前针对TNF-α引起的疾病治疗主要是抗体药物,包括Adalimumab,Infliximab和Etanercept等[Taylor,P.C.,“Anti-TNFalpha therapyfor rheumatoid arthritis:an update”,Intern.med.,2003,42(1):15-20]。其中Infliximab是Johnson&Johnson公司开发的针对TNF-α的单抗药物,2017年销售额为82亿美元。最近Sivelle等人利用两个GAL1启动子同时表达Infliximab的VH-CH1结构域和VL-CL结构域,并在内质网内折叠组装后将完整的Fab片段展示到酵母细胞表面,但是发现Infliximab的功能性Fab酵母展示效率相对较弱[Sivelle C.,Sierocki R.,Ferreira-Pinto K.,et al.,“Fab is the most efficient format to express functionalantibodies by yeast surface display”,mAbs,2018,10(5):720-9],这可能与Fab的VH-CH1结构域和VL-CL结构域在内质网内的有效组装和折叠不充分有关。因此,如何有效促进功能性Fab片段的酵母细胞表面展示,这是目前亟需解决的问题。
发明内容
鉴于现有技术的不足,功能性Fab片段的酵母细胞表面展示效率较低与其重链的VH-CH1结构域和L链在内质网内的有效组装和折叠有关。由于分子伴侣蛋白能够协助新合成的蛋白质多肽链进行正确的折叠并防止它们的聚集,从而维持蛋白质进行功能性的表达和分泌[Hartl F.U.,Hayer-Hartl M.,“Molecular chaperones in the cytosol:fromnascent chain to foldedprotein”,Science,2002,295(5561):1852-1858]。因此,本发明目的是提供一种利用分子伴侣提高酵母细胞表面展示Fab片段抗原结合能力的重组载体。
为了实现本发明的目的,本发明人设计了一种三启动子的Fab表面展示载体pFab-2,来共表达内质网分子伴侣蛋白和Fab片段,从而促进Fab片段在酵母内质网内的有效组装和折叠。具体地,本发明利用分子伴侣提高酵母细胞表面展示功能性Infliximab Fab片段的方法的技术方案概况如下:
一种利用分子伴侣提高酵母细胞表面展示功能性Infliximab Fab片段的方法,其采用一种三启动子的Fab表面展示重组载体,来共表达内质网分子伴侣蛋白和Fab片段,该重组载体的结构为pESE-GAL1-ERMC---HA-CL-VL-GAL1-GAL10-VH-CH1-FLAG-Aga2,所述的ERMC为内质网分子伴侣,所述的HA或FLAG为荧光抗体标签,所述的GAL1-GAL10为控制Fab两条链表达的双向启动子,所述的Aga2为酵母细胞表面展示蛋白。
进一步优选地,如上所述利用分子伴侣提高酵母细胞表面展示功能性InfliximabFab片段的方法,其中的内质网分子伴侣选自Pdi1或Kar2。
进一步优选地,如上所述利用分子伴侣提高酵母细胞表面展示功能性InfliximabFab片段的方法,其中的内质网分子伴侣由单独的GAL1启动子控制表达。
进一步优选地,如上所述利用分子伴侣提高酵母细胞表面展示功能性InfliximabFab片段的方法,其中的重组载体的序列为SEQ ID NO:1或SEQ ID NO:2所示。
需要说明的是,pFab-2载体的构建可以采用如下方法步骤:
1)采用PCR克隆方法得到酿酒酵母分子伴侣蛋白的基因片段;
2)将步骤1)获得的PCR产物回收后,用EcoRⅠ和XhoⅠ双酶切,再与经同样双酶切的pESE载体酶连,酶连产物转化大肠杆菌感受态细胞,经菌落PCR验证和测序确认后得到重组质粒pESE-GAL1-ERMC;
3)采用PCR克隆方法得到Infliximab的VH-CH1-FLAG-Aga2复合体的基因片段;
4)将步骤3)获得的VH-CH1-FLAG-Aga2复合体的PCR产物回收后,用PstⅠ和BamHⅠ双酶切和琼脂糖凝胶回收后,再分别与经同样双酶切的pESE-GAL1-ERMC载体酶连,酶连产物转化大肠杆菌感受态细胞,经菌落PCR验证和测序确认后得到含Infliximab VH-CH1基因的重组质粒pESE-GAL1-ERMC---GAL10-VH-CH1-FLAG-Aga2;
5)采用PCR克隆方法得到Infliximab的VL-CL-HA复合体的基因片段。
6)将步骤5)获得的VL-CL-HA复合体的PCR产物回收后,用SalⅠ和NdeⅠ双酶切和琼脂糖凝胶回收后,再分别与经同样双酶切的步骤4)得到的重组质粒酶连,酶连产物转化大肠杆菌感受态细胞,经菌落PCR验证和测序确认后得到重组质粒pESE-GAL1-ERMC---HA-CL-VL-GAL1-GAL10-VH-CH1-FLAG-Aga2。
与现有技术相比,本发明利用一种新型三启动子的Fab表面展示载体来共表达内质网分子伴侣蛋白Pdi或Kar2和Infliximab的Fab片段,促进了Fab片段的VH-CH1和VL-CL两个结构在内质网中的折叠组装效率,明显提高了酵母细胞表面展示Fab片段的抗原结合能力(图2)。当共表达分子伴侣Pdi或Kar2时,Infliximab的Fab片段针对TNF-α抗原结合能力分别提高了3.6倍或2.6倍,提高了Infliximab Fab片段在酵母细胞表面的功能性展示。而共表达分子伴侣Lhs1时,Infliximab的Fab片段针对TNF-α抗原结合能力却没有发生变化。总之,本发明利用共表达分子伴侣Pdi或Kar2的Fab展示方法更适用于低表达和低活性的功能性Fab酵母细胞表面展示,为抗体工程中Fab的改造方法提供了一种优化策略。
附图说明
图1:重组质粒pFab-2的构建流程图;
图2:分子伴侣共表达对酵母细胞表面展示的Fab片段结合TNF-α能力的影响。A:重组质粒pFab-2,分子伴侣Kar2、Pdi1、Lhs1由单独的GAL1启动子控制表达。B:将含有分子伴侣Kar2、Pdi1、Lhs1的Infiximab Fab展示载体分别转入酵母细胞诱导表达,再使用0.1nM 6×His-TNF-α反应,最后利用Anti-6×His-iFluor 647荧光抗体标记和流式细胞仪检测分子伴侣Kar2、Pdi1、Lhs1共表达时不同Infiximab Fab片段的TNF-α结合能力。
具体实施方式
下面结合具体实施例来进一步描述本发明,本发明的优点和特点将会随着描述而更为清楚。但是应理解所述实施例仅是范例性的,不对本发明的范围构成任何限制。本领域技术人员应该理解的是,在不偏离本发明的精神下可以对技术方案的细节和形式进行修改或替换,但这些修改或替换均落入本发明的保护范围。
另外,以下实施例利用本发明含有分子伴侣的质粒pFab-2,构建基因工程菌进行Fab酵母细胞表面展示以及活性检测的方法,具体步骤如下:
1)将上述构建好的pFab-2质粒通过化学转化法转入酿酒酵EBY100(URA+,leu-,trp-)感受态细胞中,涂布YNB-CAA-Glucose平板;
2)将上述酵母转化子接种于YNB-CAA-Glucose液体培养基中,于30℃过夜培养至OD600为3.0-4.0,换YNB-CAA-Galactose培养液诱导,起始OD600为0.8,于18℃诱导48h;
3)每个样品取两份,一份用于Fab展示效率检测,另一份用于活性检测。分别取106个酵母细胞,先用溶液A洗一次,再用溶液B洗一次,4℃,3000rpm,离心2min。将其中一份用于Fab活性检测的细胞与不同浓度的6×His-TNF-α于25℃孵育30min,再用溶液B洗两次,最后用荧光抗体Anti-6×His-iFluor 647(GenScript公司,0.5μg/μl)标记。将另外一份用于Fab展示效率检测的细胞直接与荧光抗体Anti-HA-FITC(GenScript公司,0.5μg/μl)标记。
4)将标记好的细胞于3000rpm,离心2min,去掉上清。再用溶液B洗一次,最后用1×PBS重悬细胞,重悬的细胞用于CytoFLEX流式细胞仪分析,检测的荧光信号通道分别为525/40nm(FITC)波长通道和660/20nm(iFluor 647)波长通道。
所述培养基及洗细胞溶液组成成分如下:
YNB-CAA-Glucose:20g/L葡萄糖,6.7g/L YNB,5.4g/L Na2HPO4,8.6g/L NaH2PO4·H2O,5g/L casamino acids,pH7.4;
YNB-CAA-Galactose:20g/L半乳糖,6.7g/L YNB,5.4g/L Na2HPO4,8.6g/LNaH2PO4·H2O,5g/L casamino acids,pH7.4;
溶液A:1X PBS,0.5%BSA,1mM EDTA,pH7.4;
溶液B:1X PBS,0.5%BSA,pH7.4。
实施例1:含质粒pFab-2的基因工程菌构建
采用PCR克隆方法得到酿酒酵母EBY100的分子伴侣PDI1、KAR2、LHS1的基因片段;
PCR反应体系:10×KOD buffer,5μl;dNTP(2.5mM),4μl;引物F(10μM),3μl;引物R(10μM),3μl;Pfu聚合酶,2μl;模板,1μl;加ddH2O至50μl。PCR扩增体系:95℃,5min;95℃,30s,55℃,30s,72℃,1min,25个循环;72℃,5min;12℃,10min;
将上述获得的分子伴侣的PCR产物分别用0.8%的琼脂糖凝胶回收后,用EcoRⅠ和XhoⅠ,酶切体系为:XhoⅠ,1μl;EcoRⅠ,1μl;10×Cutsmart buffer,5μl;PCR回收产物,30μl,加ddH2O至50μl。37℃酶切5h后,用0.8%的琼脂糖凝胶回收;
再与经过限制性核酸内切酶EcoRⅠ和XhoⅠ双酶切后的pESE载体酶连。酶连体系为:酶切片段,1.2μl;酶切载体,0.3μl;T4DNA连接酶缓冲液(NEB公司),1μl;T4DNA连接酶(NEB公司),0.3μl;加ddH2O至10μl,于22℃酶连1h。酶连产物直接转化到大肠杆菌XL-GOLD(Invitrogen公司)感受态细胞中,经菌落PCR验证和测序确认后得到重组质粒pESE-GAL1-ERMC;
采用PCR克隆方法得到Infliximab的VH-CH1-FLAG-Aga2和VL-CL-HA复合体的基因片段;
PCR反应体系:10×KOD buffer,5μl;dNTP(2.5mM),4μl;引物F(10μM),3μl;引物R(10μM),3μl;Pfu聚合酶,2μl;模板,1μl;加ddH2O至50μl。PCR扩增体系:95℃,5min;95℃,30s,55℃,30s,72℃,30s,25个循环;72℃,5min;12℃,10min;
将上述获得的VH-CH1-FLAG-Aga2复合体的PCR产物用0.8%的琼脂糖凝胶回收后,用限制性内切酶PstⅠ和BamHⅠ双酶切,酶切体系为:PstⅠ,1μl;BamHⅠ,1μl;10×Cutsmartbuffer,5μl;PCR回收产物,30μl,加ddH2O至50μl。37℃酶切5h后,用0.8%的琼脂糖凝胶回收;
再分别与经过限制性核酸内切酶PstⅠ和BamHⅠ双酶切后的pESE-GAL1-PDI1和pESE-GAL1-KAR2载体酶连。酶连体系为:酶切片段,1.2μl;酶切载体,0.3μl;T4DNA连接酶缓冲液(NEB公司),1μl;T4DNA连接酶(NEB公司),0.3μl;加ddH2O至10μl,于22℃酶连1h。酶连产物直接转化到大肠杆菌XL-GOLD(Invitrogen公司)感受态细胞中,经菌落PCR验证和测序确认后得到含Infliximab的VH-CH1基因的重组质粒pESE-GAL1-ERMC---GAL10-VH-CH1-FLAG-Aga2;
将上述获得的VL-CL-HA-ERS复合体的PCR产物回收后,用SalⅠ和NdeⅠ双酶切和琼脂糖凝胶回收后,再与经BamHⅠ和XhoⅠ双酶切和琼脂糖凝胶回收的pESE-GAL1-ERMC---GAL10-VH-CH1-FLAG-Aga2载体酶连。酶连产物转化到大肠杆菌XL-GOLD感受态细胞中,经菌落PCR验证和测序确认后得到重组质粒pFab-2(pESE-GAL1-ERMC---HA-CL-VL-GAL1-GAL10-VH-CH1-FLAG-Aga2);
将构建好的重组质粒pFab-2,通过化学转化法转入酿酒酵母EBY100(URA+,leu-,trp-)中,然后涂布于YNB-CAA-Glucose平板,于30℃培养3-4天。
实施例2:含质粒pFab-2的基因工程菌的Fab诱导表达
将实施例1转化有pFab-2质粒的酵母转化子接种于YNB-CAA-Glucose液体培养基中,于30℃过夜培养至OD600为3.0-4.0,换YNB-CAA-Galactose培养液诱导,起始OD600为0.8,于18℃诱导48h。
实施例3:含质粒pFab-2的基因工程菌的Fab酵母细胞表面展示效率以及活性检测
将实施例2中诱导好的酵母细胞,每个样品取两份,一份用于Fab展示效率检测,另一份用于活性检测。分别取106个酵母细胞,先用溶液A洗一次,再用溶液B洗一次,4℃,3000rpm,离心2min。将其中一份用于Fab活性检测的细胞分别与不同浓度的6×His-TNF-α(大肠杆菌表达纯化)于25℃孵育30min,再用溶液B洗两次,最后用20μl溶液B和0.15μl荧光抗体Anti-6×His-iFluor 647重悬。将另外一份用于Fab展示效率检测的细胞直接与20μl溶液B和0.15μl荧光抗体Anti-HA-FITC重悬。将重悬好的细胞先置于4℃min,再室温放置30min,整个过程避光操作。
将标记好的细胞于3000rpm,离心2min,去掉上清。再用溶液B洗一次,最后用400μl1×PBS重悬细胞,重悬的细胞用于CytoFLEX流式细胞仪分析,检测的荧光信号通道分别为525/40nm(FITC)波长通道和660/20nm(iFluor 647)波长通道。试验结果参见图2所示。
序列表
<110> 湖北大学
<120> 一种利用分子伴侣提高酵母细胞表面展示功能性Infliximab Fab片段的方法
<160> 2
<170> SIPOSequenceListing 1.0
<210> 1
<211> 10568
<212> DNA
<213> 人工序列(Artificial Sequence)
<400> 1
cgaaacgcgc gagacgaaag ggcctcgtga tacgcctatt tttataggtt aatgtcatga 60
taataatggt ttcttaggac ggatcgcttg cctgtaactt acacgcgcct cgtatctttt 120
aatgatggaa taatttggga atttactctg tgtttattta tttttatgtt ttgtatttgg 180
attttagaaa gtaaataaag aaggtagaag agttactgaa tgaagaaaaa aaaataaaca 240
aaggtttaaa aaatttcaca aaaagcgtac tttacatata tatttattag acagaaagca 300
gattaaatag atatacattc gattaacgat aagtaaaatg taaaatcaca ggattttcgt 360
gtgtggtctt ctacacagac aagatgaaac aattcggcat taatacctga gagcaggaag 420
agcaagataa aaggtagtat ttgttggcga tccccctaga gtcttttaca tcttcggaaa 480
acaaaaacta ttttttcttt aatttctttt tttactttct atttttaatt tatatattta 540
tattaaaaaa tttaaattat aattattttt atagcacgtg atgaaaagga cccaggtggc 600
acttttcggg gaaatgtgcg cggaacccct atttgtttat ttttctaaat acattcaaat 660
atgtatccgc tcatgagaca ataaccctga taaatgcttc aataatattg aaaaaggaag 720
agtatgagta ttcaacattt ccgtgtcgcc cttattccct tttttgcggc attttgcctt 780
cctgtttttg ctcacccaga aacgctggtg aaagtaaaag atgctgaaga tcagttgggt 840
gcacgagtgg gttacatcga actggatctc aacagcggta agatccttga gagttttcgc 900
cccgaagaac gttttccaat gatgagcact tttaaagttc tgctatgtgg cgcggtatta 960
tcccgtattg acgccgggca agagcaactc ggtcgccgca tacactattc tcagaatgac 1020
ttggttgagt actcaccagt cacagaaaag catcttacgg atggcatgac agtaagagaa 1080
ttatgcagtg ctgccataac catgagtgat aacactgcgg ccaacttact tctgacaacg 1140
atcggaggac cgaaggagct aaccgctttt tttcacaaca tgggggatca tgtaactcgc 1200
cttgatcgtt gggaaccgga gctgaatgaa gccataccaa acgacgagcg tgacaccacg 1260
atgcctgtag caatggcaac aacgttgcgc aaactattaa ctggcgaact acttactcta 1320
gcttcccggc aacaattaat agactggatg gaggcggata aagttgcagg accacttctg 1380
cgctcggccc ttccggctgg ctggtttatt gctgataaat ctggagccgg tgagcgtggg 1440
tctcgcggta tcattgcagc actggggcca gatggtaagc cctcccgtat cgtagttatc 1500
tacacgacgg gcagtcaggc aactatggat gaacgaaata gacagatcgc tgagataggt 1560
gcctcactga ttaagcattg gtaactgtca gaccaagttt actcatatat actttagatt 1620
gatttaaaac ttcattttta atttaaaagg atctaggtga agatcctttt tgataatctc 1680
atgaccaaaa tcccttaacg tgagttttcg ttccactgag cgtcagaccc cgtagaaaag 1740
atcaaaggat cttcttgaga tccttttttt ctgcgcgtaa tctgctgctt gcaaacaaaa 1800
aaaccaccgc taccagcggt ggtttgtttg ccggatcaag agctaccaac tctttttccg 1860
aaggtaactg gcttcagcag agcgcagata ccaaatactg tccttctagt gtagccgtag 1920
ttaggccacc acttcaagaa ctctgtagca ccgcctacat acctcgctct gctaatcctg 1980
ttaccagtgg ctgctgccag tggcgataag tcgtgtctta ccgggttgga ctcaagacga 2040
tagttaccgg ataaggcgca gcggtcgggc tgaacggggg gttcgtgcac acagcccagc 2100
ttggagcgaa cgacctacac cgaactgaga tacctacagc gtgagcattg agaaagcgcc 2160
acgcttcccg aagggagaaa ggcggacagg tatccggtaa gcggcagggt cggaacagga 2220
gagcgcacga gggagcttcc aggggggaac gcctggtatc tttatagtcc tgtcgggttt 2280
cgccacctct gacttgagcg tcgatttttg tgatgctcgt caggggggcc gagcctatgg 2340
aaaaacgcca gcaacgcggc ctttttacgg ttcctggcct tttgctggcc ttttgctcac 2400
atgttctttc ctgcgttatc ccctgattct gtggataacc gtattaccgc ctttgagtga 2460
gctgataccg ctcgccgcag ccgaacgacc gagcgcagcg agtcagtgag cgaggaagcg 2520
gaagagcgcc caatacgcaa accgcctctc cccgcgcgtt ggccgattca ttaatgcagc 2580
tggcacgaca ggtttcccga ctggaaagcg ggcagtgagc gcaacgcaat taatgtgagt 2640
tacctcactc attaggcacc ccaggcttta cactttatgc ttccggctcc tatgttgtgt 2700
ggaattgtga gcggataaca atttcacaca ggaaacagct atgaccatga ttacgccaag 2760
ctcggaatta accctcacta aagggaacaa aagctgggta cccgacaggt tatcagcaac 2820
aacacagtca tatccattct caattagctc taccacagtg tgtgaaccaa tgtatccagc 2880
accacctgta accaaaacaa ttttagaagt actttcactt tgtaactgag ctgtcattta 2940
tattgaattt tcaaaaattc ttactttttt tttggatgga cgcaaagaag tttaataatc 3000
atattacatg gcattaccac catatacata tccatatcta atcttactta tatgttgtgg 3060
aaatgtaaag agccccatta tcttagccta aaaaaacctt ctctttggaa ctttcagtaa 3120
tacgcttaac tgctcattgc tatattgaag tacggattag aagccgccga gcgggtgaca 3180
gccctccgaa ggaagactct cctccgtgcg tcctcgtctt caccggtcgc gttcctgaaa 3240
cgcagatgtg cctcgcgccg cactgctccg aacaataaag attctacaat actagctttt 3300
atggttatga agaggaaaaa ttggcagtaa cctggcccca caaaccttca aatgaacgaa 3360
tcaaattaac aaccatagga tgataatgcg attagttttt tagccttatt tctggggtaa 3420
ttaatcagcg aagcgatgat ttttgatcta ttaacagata tataaatgca aaaactgcat 3480
aaccacttta actaatactt tcaacatttt cggtttgtat tacttcttat tcaaatgtaa 3540
taaaagtatc aacaaaaaat tgttaatata cctctatact ttaacgtcaa ggagaaaaaa 3600
ccccggatcg aattcatgaa gttttctgct ggtgccgtcc tgtcatggtc ctccctgctg 3660
ctcgcctcct ctgttttcgc ccaacaagag gctgtggccc ctgaagactc cgctgtcgtt 3720
aagttggcca ccgactcctt caatgagtac attcagtcgc acgacttggt gcttgcggag 3780
ttttttgctc catggtgtgg ccactgtaag aacatggctc ctgaatacgt taaagccgcc 3840
gagactttag ttgagaaaaa cattaccttg gcccagatcg actgtactga aaaccaggat 3900
ctgtgtatgg aacacaacat tccagggttc ccaagcttga agattttcaa aaacagcgat 3960
gttaacaact cgatcgatta cgagggacct agaactgccg aggccattgt ccaattcatg 4020
atcaagcaaa gccaaccggc tgtcgccgtt gttgctgatc taccagctta ccttgctaac 4080
gagacttttg tcactccagt tatcgtccaa tccggtaaga ttgacgccga cttcaacgcc 4140
accttttact ccatggccaa caaacacttc aacgactacg actttgtctc cgctgaaaac 4200
gcagacgatg atttcaagct ttctatttac ttgccctccg ccatggacga gcctgtagta 4260
tacaacggta agaaagccga tatcgctgac gctgatgttt ttgaaaaatg gttgcaagtg 4320
gaagccttgc cctactttgg tgaaatcgac ggttccgttt tcgcccaata cgtcgaaagc 4380
ggtttgcctt tgggttactt attctacaat gacgaggaag aattggaaga atacaagcct 4440
ctctttaccg agttggccaa aaagaacaga ggtctaatga actttgttag catcgatgcc 4500
agaaaattcg gcagacacgc cggcaacttg aacatgaagg aacaattccc tctatttgcc 4560
atccacgaca tgactgaaga cttgaagtac ggtttgcctc aactctctga agaggcgttt 4620
gacgaattga gcgacaagat cgtgttggag tctaaggcta ttgaatcttt ggttaaggac 4680
ttcttgaaag gtgatgcctc cccaatcgtg aagtcccaag agatcttcga gaaccaagat 4740
tcctctgtct tccaattggt cggtaagaac catgacgaaa tcgtcaacga cccaaagaag 4800
gacgttcttg ttttgtacta tgccccatgg tgtggtcact gtaagagatt ggccccaact 4860
taccaagaac tagctgatac ctacgccaac gccacatccg acgttttgat tgctaaacta 4920
gaccacactg aaaacgatgt cagaggcgtc gtaattgaag gttacccaac aatcgtctta 4980
tacccaggtg gtaagaagtc cgaatctgtt gtgtaccaag gttcaagatc cttggactct 5040
ttattcgact tcatcaagga aaacggtcac ttcgacgtcg acggtaaggc cttgtacgaa 5100
gaagcccagg aaaaagctgc tgaggaagcc gatgctgacg ctgaattggc tgacgaagaa 5160
gatgccattc acgatgaatt gtaactcgag atctgataac aacagtgtag atgtaacaaa 5220
atcgactttg ttcccactgt acttttagct cgtacaaaat acaatatact tttcatttct 5280
ccgtaaacaa catgttttcc catgtaatat ccttttctat ttttcgttcc gttaccaact 5340
ttacacatac tttatatagc tattcacttc tatacactaa aaaactaaga caattttaat 5400
tttgctgcct gccatatttc aatttgttat aaattcctat aatttatcct attagtagct 5460
aaaaaaagat gaatgtgaat cgaatcctaa gagaattgag ctccaattcg ccctatagtg 5520
agtcgtatta caattcactg gccgtcgttt tacaacgtcg tgactgggaa aaccctggcg 5580
ttacccaact taatcgcctt gcagcacatc cccccttcgc cagctggcgt aatagcgaag 5640
aggcccgcac cgatcgccct tcccaacagt tgcgcagcct gaatggcgaa tggcgcgacg 5700
cgccctgtag cggcgcatta agcgcggcgg gtgtggtggt tacgcgcagc gtgaccgcta 5760
cacttgccag cgccctagcg cccgctcctt tcgctttctt cccttccttt ctcgccacgt 5820
tcgccggctt tccccgtcaa gctctaaatc gggggctccc tttagggttc cgatttagtg 5880
ctttacggca cctcgacccc aaaaaacttg attagggtga tggttcacgt agtgggccat 5940
cgccctgata gacggttttt cgccctttga cgttggagtc cacgttcttt aatagtggac 6000
tcttgttcca aactggaaca acactcaacc ctatctcggt ctattctttt gatttataag 6060
ggattttgcc gatttcggcc tattggttaa aaaatgagct gatttaacaa aaatttaacg 6120
cgaattttaa caaaatatta acgtttacaa tttcctgatg cggtattttc tccttacgca 6180
tctgtgcggt atttcacacc gcaggcaagt gcacaaacaa tacttaaata aatactactc 6240
agtaataacc tatttcttag catttttgac gaaatttgct attttgttag agtcttttac 6300
accatttgtc tccacacctc cgcttacatc aacaccaata acgccattta atctaagcgc 6360
atcaccaaca ttttctggcg tcagtccacc agctaacata aaatgtaagc tttcggggct 6420
ctcttgcctt ccaacccagt cagaaatcga gttccaatcc aaaagttcac ctgtcccacc 6480
tgcttctgaa tcaaacaagg gaataaacga atgaggtttc tgtgaagctg cactgagtag 6540
tatgttgcag tcttttggaa atacgagtct tttaataact ggcaaaccga ggaactcttg 6600
gtattcttgc cacgactcat ctccatgcag ttggacgata tcaatgccgt aatcattgac 6660
cagagccaaa acatcctcct taggttgatt acgaaacacg ccaaccaagt atttcggagt 6720
gcctgaacta tttttatatg cttttacaag acttgaaatt ttccttgcaa taaccgggtc 6780
aattgttctc tttctattgg gcacacatat aatacccagc aagtcagcat cggaatctag 6840
agcacattct gcggcctctg tgctctgcaa gccgcaaact ttcaccaatg gaccagaact 6900
acctgtgaaa ttaataacag acatactcca agctgccttt gtgtgcttaa tcacgtatac 6960
tcacgtgctc aatagtcacc aatgccctcc ctcttggccc tctccttttc ttttttcgac 7020
cgaattaatt cttaatcggc aaaaaaagaa aagctccgga tcaagattgt acgtaaggtg 7080
acaagctatt tttcaataaa gaatatcttc cactactgcc atctggcgtc ataactgcaa 7140
agtacacata tattacgatg ctgtctatta aatgcttcct atattatata tatagtaatg 7200
tcgtttatgg tgcactctca gtacaatctg ctctgatgcc gcatagttaa gccagccccg 7260
acacccgcca acacccgctg acgcgccctg acgggcttgt ctgctcccgg gggccatccg 7320
cttacagaca agctgtgacc gtctccggga gctgcatgtg tcagaggttt tcaccgtcat 7380
cacccattca ggctgcgcaa ctgttgggaa gggcgatcgg tgcgggcctc ttcgctatta 7440
cgccagctga attggagcga cctcatgcta tacctgagaa agcaacctga cctacaggaa 7500
agagttactc aagaataaga attttcgttt taaaacctaa gagtcacttt aaaatttgta 7560
tacacttatt ttttttataa cttatttaat aataaaaatc ataaatcata agaaattcgc 7620
ttatttagaa gtgtcaacaa cgtatctacc aacgatttga cccttttcca tcttttcgta 7680
aatttctggc aaggtagaca agccgacaac cttgattgga gacttgacca aacctctggc 7740
gaagaattgt taattaagga tccgagctca aaaaacatac tgtgtgttta tggggctgcc 7800
tttgctagtt gttgaggggt gagaaccgca attactgaca aacgttactg atttgtaata 7860
ttcaaaaact ccttgcattg ccttcccgtt ggccaaaata gtagtcgttg acaaagagta 7920
cggcgtcgat tctaaagttg gtgaggggat ttgctcgcat atagttgtca gttcctgcga 7980
ccctccgcct ccgctaccgc ctccaccaga gcctcctcca cctttatcgt cgtcatcttt 8040
ataatcactg ccactacccg tcttgtcaca tgattttggc tctacttttt tatctacctt 8100
cgtatttgaa ggtttatgat ttacattaca tatataggtt tgagttccta agctggatga 8160
cggtacagtg acaacagaag ataatgaata caacccggaa gattgcagga cagcggggaa 8220
cgtgtgtacc ccacttgtca aagcaccgct gttccagcta accgtaacag gctcggggaa 8280
gtaatctttc accaaacagc caagggcagc agtcccaccg gatgtactct tggaagaggg 8340
cgccagcggg aaaactgatg gacccttcgt gcttgcagaa ctaactgtta gtgttgtccc 8400
ttgcccccag tagtcgtatg tagaaccgta gtaatttcta ctacagtagt acactcctgt 8460
atcctcggtc ctcaggtccg tcatctgaag gtacaccgca gattttgagt cgtccctgga 8520
gattgtgaac cttcccttaa cagattcggc ataatgagta gcagagttaa tacttttaga 8580
cctaatttcc gcaacccatt ccaacccctt ctccgggctc tgcctgaccc agttcatcca 8640
gtgattggag aatatgaaac cagatgcaac gcatgataat ttcattgagc cccctggctg 8700
aacaagtccg ccgccactct cttctaattt tacctctgct aaaactgaag caataacaga 8760
aaatattgaa aaacagcgaa gtaactgcat cgatgctagc ctgcagacta gtgcggccgc 8820
cctttagtga gggttgaatt ttcaaaaatt cttacttttt ttttggatgg acgcaaagaa 8880
gtttaataat catattacat ggcattacca ccatatacat atccatatac atatccatat 8940
ctaatcttac ttatatgttg tggaaatgta aagagcccca ttatcttagc ctaaaaaaac 9000
cttctctttg gaactttcag taatacgctt aactgctcat tgctatattg aagtacggat 9060
tagaagccgc cgagcgggcg acagccctcc gaaggaagac tctcctccgt gcgtcctcgt 9120
ctcaccggtc gcgttcctga aacgcagatg tgcctcgcgc cgcactgctc cgaacaataa 9180
agattctaca atactagctt ttatggttat gaagaggaaa aattggcagt aacctggccc 9240
cacaaacctt caaatgaacg aatcaaatta acaaccatag gatgataatg cgattagttt 9300
tttagcctta tttctggggt aattaatcag cgaagcgatg atttttgatc tattaacaga 9360
tatataaatg caaaaactgc ataaccactt taactaatac tttcaacatt ttcggtttgt 9420
attacttctt attcaaatgt aataaaagta tcaacaaaaa aattgttaat atacctctat 9480
actttaacgt caaggagaaa aaccccgtaa tacgactcac tatagggccc gggcgtcgac 9540
atgcaacttt tgagatgctt cagtattttc agcgtcatcg ccagtgtgct ggccgatatt 9600
ttattgacac aaagcccagc gatcctaagt gttagtccag gtgagagagt ttcctttagt 9660
tgtcgtgcgt cacagtttgt tgggagtagt atccactggt atcagcaaag aaccaacggg 9720
tctcctagac ttctgataaa gtacgccagc gagtctatga gtgggatacc atctcgtttt 9780
agcgggtctg gctctggtac ggacttcaca ttatccatca acaccgttga gtcagaagac 9840
atcgctgatt actattgcca acaatcccat tcatggccgt ttacgtttgg ttcaggcacc 9900
aacctggaag ttaagagaac tgtcgctgcc ccgagtgtat tcatcttccc cccttccgat 9960
gaacaattga agtctggaac cgccagtgtc gtgtgtcttc ttaataactt ctatccgaga 10020
gaagcgaaag tgcaatggaa agttgacaac gcactgcagt ctggcaatag tcaggaatcc 10080
gtcaccgagc aggactccaa agactccacg tactccttat ccagcacttt gactttatcc 10140
aaagcagatt acgaaaaaca caaggtttac gcttgtgagg taacccacca agggttaagt 10200
tcccctgtaa ccaaaagctt caatagagga gaatgcggta gtggcagtta cccatacgac 10260
gttccagact acgcttaagc tcatatgtag atccgctctc taaccgaaaa ggaaggagtt 10320
agacaacctg aagtctaggt ccctatttat ttttttatag ttatgttagt attaagaacg 10380
ttatttatat ttcaaatttt tctttttttt ctgtacagac gcgtgtacgc atgtaacatt 10440
atactgaaaa ccttgcttga gaaggttttg ggacgctcga agatccagct gcattaatga 10500
atcggccaac gcgcggggag aggcggtttg cgtattgggc gctcttccgc ttcctcgctc 10560
actgactc 10568
<210> 2
<211> 11048
<212> DNA
<213> 人工序列(Artificial Sequence)
<400> 2
cgaaacgcgc gagacgaaag ggcctcgtga tacgcctatt tttataggtt aatgtcatga 60
taataatggt ttcttaggac ggatcgcttg cctgtaactt acacgcgcct cgtatctttt 120
aatgatggaa taatttggga atttactctg tgtttattta tttttatgtt ttgtatttgg 180
attttagaaa gtaaataaag aaggtagaag agttactgaa tgaagaaaaa aaaataaaca 240
aaggtttaaa aaatttcaca aaaagcgtac tttacatata tatttattag acagaaagca 300
gattaaatag atatacattc gattaacgat aagtaaaatg taaaatcaca ggattttcgt 360
gtgtggtctt ctacacagac aagatgaaac aattcggcat taatacctga gagcaggaag 420
agcaagataa aaggtagtat ttgttggcga tccccctaga gtcttttaca tcttcggaaa 480
acaaaaacta ttttttcttt aatttctttt tttactttct atttttaatt tatatattta 540
tattaaaaaa tttaaattat aattattttt atagcacgtg atgaaaagga cccaggtggc 600
acttttcggg gaaatgtgcg cggaacccct atttgtttat ttttctaaat acattcaaat 660
atgtatccgc tcatgagaca ataaccctga taaatgcttc aataatattg aaaaaggaag 720
agtatgagta ttcaacattt ccgtgtcgcc cttattccct tttttgcggc attttgcctt 780
cctgtttttg ctcacccaga aacgctggtg aaagtaaaag atgctgaaga tcagttgggt 840
gcacgagtgg gttacatcga actggatctc aacagcggta agatccttga gagttttcgc 900
cccgaagaac gttttccaat gatgagcact tttaaagttc tgctatgtgg cgcggtatta 960
tcccgtattg acgccgggca agagcaactc ggtcgccgca tacactattc tcagaatgac 1020
ttggttgagt actcaccagt cacagaaaag catcttacgg atggcatgac agtaagagaa 1080
ttatgcagtg ctgccataac catgagtgat aacactgcgg ccaacttact tctgacaacg 1140
atcggaggac cgaaggagct aaccgctttt tttcacaaca tgggggatca tgtaactcgc 1200
cttgatcgtt gggaaccgga gctgaatgaa gccataccaa acgacgagcg tgacaccacg 1260
atgcctgtag caatggcaac aacgttgcgc aaactattaa ctggcgaact acttactcta 1320
gcttcccggc aacaattaat agactggatg gaggcggata aagttgcagg accacttctg 1380
cgctcggccc ttccggctgg ctggtttatt gctgataaat ctggagccgg tgagcgtggg 1440
tctcgcggta tcattgcagc actggggcca gatggtaagc cctcccgtat cgtagttatc 1500
tacacgacgg gcagtcaggc aactatggat gaacgaaata gacagatcgc tgagataggt 1560
gcctcactga ttaagcattg gtaactgtca gaccaagttt actcatatat actttagatt 1620
gatttaaaac ttcattttta atttaaaagg atctaggtga agatcctttt tgataatctc 1680
atgaccaaaa tcccttaacg tgagttttcg ttccactgag cgtcagaccc cgtagaaaag 1740
atcaaaggat cttcttgaga tccttttttt ctgcgcgtaa tctgctgctt gcaaacaaaa 1800
aaaccaccgc taccagcggt ggtttgtttg ccggatcaag agctaccaac tctttttccg 1860
aaggtaactg gcttcagcag agcgcagata ccaaatactg tccttctagt gtagccgtag 1920
ttaggccacc acttcaagaa ctctgtagca ccgcctacat acctcgctct gctaatcctg 1980
ttaccagtgg ctgctgccag tggcgataag tcgtgtctta ccgggttgga ctcaagacga 2040
tagttaccgg ataaggcgca gcggtcgggc tgaacggggg gttcgtgcac acagcccagc 2100
ttggagcgaa cgacctacac cgaactgaga tacctacagc gtgagcattg agaaagcgcc 2160
acgcttcccg aagggagaaa ggcggacagg tatccggtaa gcggcagggt cggaacagga 2220
gagcgcacga gggagcttcc aggggggaac gcctggtatc tttatagtcc tgtcgggttt 2280
cgccacctct gacttgagcg tcgatttttg tgatgctcgt caggggggcc gagcctatgg 2340
aaaaacgcca gcaacgcggc ctttttacgg ttcctggcct tttgctggcc ttttgctcac 2400
atgttctttc ctgcgttatc ccctgattct gtggataacc gtattaccgc ctttgagtga 2460
gctgataccg ctcgccgcag ccgaacgacc gagcgcagcg agtcagtgag cgaggaagcg 2520
gaagagcgcc caatacgcaa accgcctctc cccgcgcgtt ggccgattca ttaatgcagc 2580
tggcacgaca ggtttcccga ctggaaagcg ggcagtgagc gcaacgcaat taatgtgagt 2640
tacctcactc attaggcacc ccaggcttta cactttatgc ttccggctcc tatgttgtgt 2700
ggaattgtga gcggataaca atttcacaca ggaaacagct atgaccatga ttacgccaag 2760
ctcggaatta accctcacta aagggaacaa aagctgggta cccgacaggt tatcagcaac 2820
aacacagtca tatccattct caattagctc taccacagtg tgtgaaccaa tgtatccagc 2880
accacctgta accaaaacaa ttttagaagt actttcactt tgtaactgag ctgtcattta 2940
tattgaattt tcaaaaattc ttactttttt tttggatgga cgcaaagaag tttaataatc 3000
atattacatg gcattaccac catatacata tccatatcta atcttactta tatgttgtgg 3060
aaatgtaaag agccccatta tcttagccta aaaaaacctt ctctttggaa ctttcagtaa 3120
tacgcttaac tgctcattgc tatattgaag tacggattag aagccgccga gcgggtgaca 3180
gccctccgaa ggaagactct cctccgtgcg tcctcgtctt caccggtcgc gttcctgaaa 3240
cgcagatgtg cctcgcgccg cactgctccg aacaataaag attctacaat actagctttt 3300
atggttatga agaggaaaaa ttggcagtaa cctggcccca caaaccttca aatgaacgaa 3360
tcaaattaac aaccatagga tgataatgcg attagttttt tagccttatt tctggggtaa 3420
ttaatcagcg aagcgatgat ttttgatcta ttaacagata tataaatgca aaaactgcat 3480
aaccacttta actaatactt tcaacatttt cggtttgtat tacttcttat tcaaatgtaa 3540
taaaagtatc aacaaaaaat tgttaatata cctctatact ttaacgtcaa ggagaaaaaa 3600
ccccggatcg aattcatgtt tttcaacaga ctaagcgctg gcaagctgct ggtaccactc 3660
tccgtggtcc tgtacgccct tttcgtggta atattacctt tacagaattc tttccactcc 3720
tccaatgttt tagttagagg tgccgatgat gtagaaaact acggaactgt tatcggtatt 3780
gacttaggta ctacttattc ctgtgttgct gtgatgaaaa atggtaagac tgaaattctt 3840
gctaatgagc aaggtaacag aatcacccca tcttacgtgg cattcaccga tgatgaaaga 3900
ttgattggtg atgctgcaaa gaaccaagtt gctgccaatc ctcaaaacac catcttcgac 3960
attaagagat tgatcggttt gaaatataac gacagatctg ttcagaagga tatcaagcac 4020
ttgccattta atgtggttaa taaagatggg aagcccgctg tagaagtaag tgtcaaagga 4080
gaaaagaagg tttttactcc agaagaaatt tctggtatga tcttgggtaa gatgaaacaa 4140
attgccgaag attatttagg cactaaggtt acccatgctg tcgttactgt tcctgcttat 4200
ttcaatgacg cgcaaagaca agccaccaag gatgctggta ccatcgctgg tttgaacgtt 4260
ttgagaattg ttaatgaacc aaccgcagcc gccattgcct acggtttgga taaatctgat 4320
aaggaacatc aaattattgt ttatgatttg ggtggtggta ctttcgatgt ctctctattg 4380
tctattgaaa acggtgtttt cgaagtccaa gccacttctg gtgatactca tttaggtggt 4440
gaagattttg actataagat cgttcgtcaa ttgataaaag ctttcaagaa gaagcatggt 4500
attgatgtgt ctgacaacaa caaggcccta gctaaattga agagagaagc tgaaaaggct 4560
aaacgtgcct tgtccagcca aatgtccacc cgtattgaaa ttgactcctt cgttgatggt 4620
atcgacttaa gtgaaacctt gaccagagct aagtttgagg aattaaacct agatctattc 4680
aagaagacct tgaagcctgt cgagaaggtt ttgcaagatt ctggtttgga aaagaaggat 4740
gttgatgata tcgttttggt tggtggttct actagaattc caaaggtcca acaattgtta 4800
gaatcatact ttgatggtaa gaaggcctcc aagggtatta acccagatga agctgttgca 4860
tacggtgcag ccgttcaagc tggtgtctta tccggtgaag aaggtgtcga agatattgtt 4920
ttattggatg tcaacgcttt gactcttggt attgaaacca ctggtggtgt catgactcca 4980
ttaattaaga gaaatactgc tattcctaca aagaaatccc aaattttctc tactgccgtt 5040
gacaaccaac caaccgttat gatcaaggta tacgagggtg aaagagccat gtctaaggac 5100
aacaatctat taggtaagtt tgaattaacc ggcattccac cagcaccaag aggtgtacct 5160
caaattgaag tcacatttgc acttgacgct aatggtattc tgaaggtgtc tgccacagat 5220
aagggaactg gtaaatccga atctatcacc atcactaacg ataaaggtag attaacccaa 5280
gaagagattg atagaatggt tgaagaggct gaaaaattcg cttctgaaga cgcttctatc 5340
aaggccaagg ttgaatctag aaacaaatta gaaaactacg ctcactcttt gaaaaaccaa 5400
gttaatggtg acctaggtga aaaattggaa gaagaagaca aggaaacctt attagatgct 5460
gctaacgatg ttttagaatg gttagatgat aactttgaaa ccgccattgc tgaagacttt 5520
gatgaaaagt tcgaatcttt gtccaaggtc gcttatccaa ttacttctaa gttgtacgga 5580
ggtgctgatg gttctggtgc cgctgattat gacgacgaag atgaagatga cgatggtgat 5640
tatttcgaac acgacgaatt gtagctcgag atctgataac aacagtgtag atgtaacaaa 5700
atcgactttg ttcccactgt acttttagct cgtacaaaat acaatatact tttcatttct 5760
ccgtaaacaa catgttttcc catgtaatat ccttttctat ttttcgttcc gttaccaact 5820
ttacacatac tttatatagc tattcacttc tatacactaa aaaactaaga caattttaat 5880
tttgctgcct gccatatttc aatttgttat aaattcctat aatttatcct attagtagct 5940
aaaaaaagat gaatgtgaat cgaatcctaa gagaattgag ctccaattcg ccctatagtg 6000
agtcgtatta caattcactg gccgtcgttt tacaacgtcg tgactgggaa aaccctggcg 6060
ttacccaact taatcgcctt gcagcacatc cccccttcgc cagctggcgt aatagcgaag 6120
aggcccgcac cgatcgccct tcccaacagt tgcgcagcct gaatggcgaa tggcgcgacg 6180
cgccctgtag cggcgcatta agcgcggcgg gtgtggtggt tacgcgcagc gtgaccgcta 6240
cacttgccag cgccctagcg cccgctcctt tcgctttctt cccttccttt ctcgccacgt 6300
tcgccggctt tccccgtcaa gctctaaatc gggggctccc tttagggttc cgatttagtg 6360
ctttacggca cctcgacccc aaaaaacttg attagggtga tggttcacgt agtgggccat 6420
cgccctgata gacggttttt cgccctttga cgttggagtc cacgttcttt aatagtggac 6480
tcttgttcca aactggaaca acactcaacc ctatctcggt ctattctttt gatttataag 6540
ggattttgcc gatttcggcc tattggttaa aaaatgagct gatttaacaa aaatttaacg 6600
cgaattttaa caaaatatta acgtttacaa tttcctgatg cggtattttc tccttacgca 6660
tctgtgcggt atttcacacc gcaggcaagt gcacaaacaa tacttaaata aatactactc 6720
agtaataacc tatttcttag catttttgac gaaatttgct attttgttag agtcttttac 6780
accatttgtc tccacacctc cgcttacatc aacaccaata acgccattta atctaagcgc 6840
atcaccaaca ttttctggcg tcagtccacc agctaacata aaatgtaagc tttcggggct 6900
ctcttgcctt ccaacccagt cagaaatcga gttccaatcc aaaagttcac ctgtcccacc 6960
tgcttctgaa tcaaacaagg gaataaacga atgaggtttc tgtgaagctg cactgagtag 7020
tatgttgcag tcttttggaa atacgagtct tttaataact ggcaaaccga ggaactcttg 7080
gtattcttgc cacgactcat ctccatgcag ttggacgata tcaatgccgt aatcattgac 7140
cagagccaaa acatcctcct taggttgatt acgaaacacg ccaaccaagt atttcggagt 7200
gcctgaacta tttttatatg cttttacaag acttgaaatt ttccttgcaa taaccgggtc 7260
aattgttctc tttctattgg gcacacatat aatacccagc aagtcagcat cggaatctag 7320
agcacattct gcggcctctg tgctctgcaa gccgcaaact ttcaccaatg gaccagaact 7380
acctgtgaaa ttaataacag acatactcca agctgccttt gtgtgcttaa tcacgtatac 7440
tcacgtgctc aatagtcacc aatgccctcc ctcttggccc tctccttttc ttttttcgac 7500
cgaattaatt cttaatcggc aaaaaaagaa aagctccgga tcaagattgt acgtaaggtg 7560
acaagctatt tttcaataaa gaatatcttc cactactgcc atctggcgtc ataactgcaa 7620
agtacacata tattacgatg ctgtctatta aatgcttcct atattatata tatagtaatg 7680
tcgtttatgg tgcactctca gtacaatctg ctctgatgcc gcatagttaa gccagccccg 7740
acacccgcca acacccgctg acgcgccctg acgggcttgt ctgctcccgg gggccatccg 7800
cttacagaca agctgtgacc gtctccggga gctgcatgtg tcagaggttt tcaccgtcat 7860
cacccattca ggctgcgcaa ctgttgggaa gggcgatcgg tgcgggcctc ttcgctatta 7920
cgccagctga attggagcga cctcatgcta tacctgagaa agcaacctga cctacaggaa 7980
agagttactc aagaataaga attttcgttt taaaacctaa gagtcacttt aaaatttgta 8040
tacacttatt ttttttataa cttatttaat aataaaaatc ataaatcata agaaattcgc 8100
ttatttagaa gtgtcaacaa cgtatctacc aacgatttga cccttttcca tcttttcgta 8160
aatttctggc aaggtagaca agccgacaac cttgattgga gacttgacca aacctctggc 8220
gaagaattgt taattaagga tccgagctca aaaaacatac tgtgtgttta tggggctgcc 8280
tttgctagtt gttgaggggt gagaaccgca attactgaca aacgttactg atttgtaata 8340
ttcaaaaact ccttgcattg ccttcccgtt ggccaaaata gtagtcgttg acaaagagta 8400
cggcgtcgat tctaaagttg gtgaggggat ttgctcgcat atagttgtca gttcctgcga 8460
ccctccgcct ccgctaccgc ctccaccaga gcctcctcca cctttatcgt cgtcatcttt 8520
ataatcactg ccactacccg tcttgtcaca tgattttggc tctacttttt tatctacctt 8580
cgtatttgaa ggtttatgat ttacattaca tatataggtt tgagttccta agctggatga 8640
cggtacagtg acaacagaag ataatgaata caacccggaa gattgcagga cagcggggaa 8700
cgtgtgtacc ccacttgtca aagcaccgct gttccagcta accgtaacag gctcggggaa 8760
gtaatctttc accaaacagc caagggcagc agtcccaccg gatgtactct tggaagaggg 8820
cgccagcggg aaaactgatg gacccttcgt gcttgcagaa ctaactgtta gtgttgtccc 8880
ttgcccccag tagtcgtatg tagaaccgta gtaatttcta ctacagtagt acactcctgt 8940
atcctcggtc ctcaggtccg tcatctgaag gtacaccgca gattttgagt cgtccctgga 9000
gattgtgaac cttcccttaa cagattcggc ataatgagta gcagagttaa tacttttaga 9060
cctaatttcc gcaacccatt ccaacccctt ctccgggctc tgcctgaccc agttcatcca 9120
gtgattggag aatatgaaac cagatgcaac gcatgataat ttcattgagc cccctggctg 9180
aacaagtccg ccgccactct cttctaattt tacctctgct aaaactgaag caataacaga 9240
aaatattgaa aaacagcgaa gtaactgcat cgatgctagc ctgcagacta gtgcggccgc 9300
cctttagtga gggttgaatt ttcaaaaatt cttacttttt ttttggatgg acgcaaagaa 9360
gtttaataat catattacat ggcattacca ccatatacat atccatatac atatccatat 9420
ctaatcttac ttatatgttg tggaaatgta aagagcccca ttatcttagc ctaaaaaaac 9480
cttctctttg gaactttcag taatacgctt aactgctcat tgctatattg aagtacggat 9540
tagaagccgc cgagcgggcg acagccctcc gaaggaagac tctcctccgt gcgtcctcgt 9600
ctcaccggtc gcgttcctga aacgcagatg tgcctcgcgc cgcactgctc cgaacaataa 9660
agattctaca atactagctt ttatggttat gaagaggaaa aattggcagt aacctggccc 9720
cacaaacctt caaatgaacg aatcaaatta acaaccatag gatgataatg cgattagttt 9780
tttagcctta tttctggggt aattaatcag cgaagcgatg atttttgatc tattaacaga 9840
tatataaatg caaaaactgc ataaccactt taactaatac tttcaacatt ttcggtttgt 9900
attacttctt attcaaatgt aataaaagta tcaacaaaaa aattgttaat atacctctat 9960
actttaacgt caaggagaaa aaccccgtaa tacgactcac tatagggccc gggcgtcgac 10020
atgcaacttt tgagatgctt cagtattttc agcgtcatcg ccagtgtgct ggccgatatt 10080
ttattgacac aaagcccagc gatcctaagt gttagtccag gtgagagagt ttcctttagt 10140
tgtcgtgcgt cacagtttgt tgggagtagt atccactggt atcagcaaag aaccaacggg 10200
tctcctagac ttctgataaa gtacgccagc gagtctatga gtgggatacc atctcgtttt 10260
agcgggtctg gctctggtac ggacttcaca ttatccatca acaccgttga gtcagaagac 10320
atcgctgatt actattgcca acaatcccat tcatggccgt ttacgtttgg ttcaggcacc 10380
aacctggaag ttaagagaac tgtcgctgcc ccgagtgtat tcatcttccc cccttccgat 10440
gaacaattga agtctggaac cgccagtgtc gtgtgtcttc ttaataactt ctatccgaga 10500
gaagcgaaag tgcaatggaa agttgacaac gcactgcagt ctggcaatag tcaggaatcc 10560
gtcaccgagc aggactccaa agactccacg tactccttat ccagcacttt gactttatcc 10620
aaagcagatt acgaaaaaca caaggtttac gcttgtgagg taacccacca agggttaagt 10680
tcccctgtaa ccaaaagctt caatagagga gaatgcggta gtggcagtta cccatacgac 10740
gttccagact acgcttaagc tcatatgtag atccgctctc taaccgaaaa ggaaggagtt 10800
agacaacctg aagtctaggt ccctatttat ttttttatag ttatgttagt attaagaacg 10860
ttatttatat ttcaaatttt tctttttttt ctgtacagac gcgtgtacgc atgtaacatt 10920
atactgaaaa ccttgcttga gaaggttttg ggacgctcga agatccagct gcattaatga 10980
atcggccaac gcgcggggag aggcggtttg cgtattgggc gctcttccgc ttcctcgctc 11040
actgactc 11048

Claims (4)

1.一种利用分子伴侣提高酵母细胞表面展示功能性Infliximab Fab片段的方法,其特征在于,该方法采用一种三启动子的Fab表面展示重组载体,来共表达内质网分子伴侣蛋白和Fab片段,所述的Fab表面展示重组载体的结构为pESE-GAL1-ERMC---HA-CL-VL-GAL1-GAL10-VH-CH1-FLAG-Aga2,所述的ERMC为内质网分子伴侣,所述的内质网分子伴侣选自Pdi或Kar2,所述的HA或FLAG为荧光抗体标签,所述的GAL1-GAL10为控制Fab两条链表达的双向启动子,所述的Aga2为酵母细胞表面展示蛋白。
2. 根据权利要求1所述利用分子伴侣提高酵母细胞表面展示功能性Infliximab Fab片段的方法,其特征在于,所述的内质网分子伴侣由单独的GAL1启动子控制表达。
3. 根据权利要求1所述利用分子伴侣提高酵母细胞表面展示功能性Infliximab Fab片段的方法,其特征在于,所述重组载体的序列为SEQ ID NO:1或SEQ ID NO:2所示。
4. 根据权利要求1或2所述利用分子伴侣提高酵母细胞表面展示功能性InfliximabFab片段的方法,其特征在于,该方法的重组载体构建包括如下步骤:
1)采用PCR克隆方法得到酿酒酵母分子伴侣PDI1KAR2的基因片段;
2)将步骤1)获得的PCR产物回收后,用EcoRⅠ和XhoⅠ双酶切,再与经同样双酶切的pESE载体酶连,酶连产物转化大肠杆菌感受态细胞,经菌落PCR验证和测序确认后得到重组质粒pESE-GAL1-ERMC;
3)采用PCR克隆方法得到Infliximab的VH-CH1-FLAG-Aga2复合体的基因片段;
4)将步骤3)获得的VH-CH1-FLAG-Aga2复合体的PCR产物回收后,用PstⅠ和BamHⅠ双酶切和琼脂糖凝胶回收后,再分别与经同样双酶切的pESE-GAL1-ERMC载体酶连,酶连产物转化大肠杆菌感受态细胞,经菌落PCR验证和测序确认后得到含Infliximab VH-CH1基因的重组质粒pESE-GAL1-ERMC ---GAL10-VH-CH1-FLAG-Aga2;
5)采用PCR克隆方法得到Infliximab的VL-CL-HA复合体的基因片段;
6)将步骤5)获得的VL-CL-HA复合体的PCR产物回收后,用SalⅠ和NdeⅠ双酶切和琼脂糖凝胶回收后,再分别与经同样双酶切的步骤4)得到的重组质粒酶连,酶连产物转化大肠杆菌感受态细胞,经菌落PCR验证和测序确认后得到重组载体pESE-GAL1-ERMC---HA-CL-VL-GAL1-GAL10-VH-CH1-FLAG-Aga2。
CN201910523199.9A 2019-06-17 2019-06-17 一种利用分子伴侣提高酵母细胞表面展示功能性Infliximab Fab片段的方法 Active CN110184292B (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201910523199.9A CN110184292B (zh) 2019-06-17 2019-06-17 一种利用分子伴侣提高酵母细胞表面展示功能性Infliximab Fab片段的方法

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201910523199.9A CN110184292B (zh) 2019-06-17 2019-06-17 一种利用分子伴侣提高酵母细胞表面展示功能性Infliximab Fab片段的方法

Publications (2)

Publication Number Publication Date
CN110184292A CN110184292A (zh) 2019-08-30
CN110184292B true CN110184292B (zh) 2023-01-20

Family

ID=67722139

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201910523199.9A Active CN110184292B (zh) 2019-06-17 2019-06-17 一种利用分子伴侣提高酵母细胞表面展示功能性Infliximab Fab片段的方法

Country Status (1)

Country Link
CN (1) CN110184292B (zh)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022143596A1 (en) * 2020-12-29 2022-07-07 Wuxi Biologics (Shanghai) Co., Ltd. Surface display of antibodies in yeast cell
CN115786387B (zh) * 2022-09-19 2024-02-13 苏州泓迅生物科技股份有限公司 一种通用型酵母细胞表面展示质粒载体及其应用

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101128587A (zh) * 2003-12-23 2008-02-20 诺维信达尔塔有限公司 基因表达技术

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101128587A (zh) * 2003-12-23 2008-02-20 诺维信达尔塔有限公司 基因表达技术

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
Fab is the most efficient format to express functional antibodies by yeast surface display;Coline Sivelle;《MAbs》;20180524;第10卷(第5期);720-729 *
Functional Interrogation and Mining of Natively-Paired Human VH:VL Antibody Repertoires;Bo Wang;《Nat Biotechnol》;20180108;第36卷(第2期);152–155 *

Also Published As

Publication number Publication date
CN110184292A (zh) 2019-08-30

Similar Documents

Publication Publication Date Title
CN100540667C (zh) 利用水稻胚乳细胞作为生物反应器生产重组人血清白蛋白
CN110117551B (zh) 生产瓦伦西亚烯的酿酒酵母工程菌及其构建方法与应用
KR101229418B1 (ko) 활성형 재조합 혈액응고 9인자의 대량생산 방법
CN109797111A (zh) 一种产苹果酸基因工程菌及其生产苹果酸的方法
CN113046355B (zh) 一种中温原核Argonaute蛋白PbAgo表征及应用
CN110184292B (zh) 一种利用分子伴侣提高酵母细胞表面展示功能性Infliximab Fab片段的方法
CN110438053B (zh) 一种适用于聚球藻的生物封存系统、构建方法及应用
CN112877351A (zh) 一种用于防治新冠病毒感染的重组质粒、重组乳酸杆菌表达系统及其应用
CN113308482B (zh) 云南腾冲来源四氢嘧啶合成基因簇及其应用
CN112646833A (zh) 一种全人源抗体酵母展示技术的设计与构建
CN110938648B (zh) 一种真菌分泌表达载体、构建方法及其应用
CN109872774B (zh) 一种基于yess分析原核生物中蛋白相互作用的方法
CN108277208B (zh) 携带绿色荧光蛋白以及转铁蛋白的水疱性口炎病毒感染性克隆及制备方法和应用
CN107475272B (zh) 一种具热稳定性且耐高盐的琼脂水解酶
CN111088204A (zh) 表达Caspase-3重组scFv78的重组大肠杆菌及其功能验证方法
CN109735558B (zh) 一种重组car19-il24基因、慢病毒载体、car19-il24-t细胞及应用
CN111088209B (zh) 一种产1,4-丁二醇的重组丁醇梭菌及其构建方法与应用
CN114395576B (zh) 一种提高梭菌中蛋白表达效率的方法
CN110679606B (zh) dsRNA及其在防治埃及伊蚊中的应用
CN113702340A (zh) 粒细胞集落刺激因子生物学活性的检测方法
CN111909850B (zh) 基于杜氏盐藻代谢途径和夏侧金盏花cbfd与hbfd的产虾青素工程菌及其构建与应用
CN107142259A (zh) 一种表达外源基因的启动子及其应用
CN112180087B (zh) 检测鸭疫里默氏杆菌抗体的elisa方法及其试剂盒和应用
CN115161294B (zh) 新城疫疫苗株及其构建方法、禽类免疫识别方法、应用
CN110904142A (zh) 一种表达壳面锚定蛋白硅藻的构建技术与应用方法

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