CN114891707A - 重组菌株及其全细胞催化生产胆红素的方法 - Google Patents

重组菌株及其全细胞催化生产胆红素的方法 Download PDF

Info

Publication number
CN114891707A
CN114891707A CN202210568351.7A CN202210568351A CN114891707A CN 114891707 A CN114891707 A CN 114891707A CN 202210568351 A CN202210568351 A CN 202210568351A CN 114891707 A CN114891707 A CN 114891707A
Authority
CN
China
Prior art keywords
ala
leu
glu
gly
lys
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
CN202210568351.7A
Other languages
English (en)
Other versions
CN114891707B (zh
Inventor
朱俊歌
吴胜
陶勇
翟丽萍
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.)
Institute of Microbiology of CAS
Original Assignee
Institute of Microbiology of CAS
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 Institute of Microbiology of CAS filed Critical Institute of Microbiology of CAS
Priority to CN202210568351.7A priority Critical patent/CN114891707B/zh
Publication of CN114891707A publication Critical patent/CN114891707A/zh
Application granted granted Critical
Publication of CN114891707B publication Critical patent/CN114891707B/zh
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

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
    • 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
    • C12N15/11DNA or RNA fragments; Modified forms thereof; Non-coding nucleic acids having a biological activity
    • C12N15/113Non-coding nucleic acids modulating the expression of genes, e.g. antisense oligonucleotides; Antisense DNA or RNA; Triplex- forming oligonucleotides; Catalytic nucleic acids, e.g. ribozymes; Nucleic acids used in co-suppression or gene silencing
    • 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
    • C12N15/11DNA or RNA fragments; Modified forms thereof; Non-coding nucleic acids having a biological activity
    • C12N15/52Genes encoding for enzymes or proenzymes
    • 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
    • C12N9/0004Oxidoreductases (1.)
    • C12N9/0006Oxidoreductases (1.) acting on CH-OH groups as donors (1.1)
    • 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
    • C12N9/0004Oxidoreductases (1.)
    • C12N9/001Oxidoreductases (1.) acting on the CH-CH group of donors (1.3)
    • 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
    • C12N9/0004Oxidoreductases (1.)
    • C12N9/0071Oxidoreductases (1.) acting on paired donors with incorporation of molecular oxygen (1.14)
    • C12N9/0083Miscellaneous (1.14.99)
    • 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
    • C12P17/00Preparation of heterocyclic carbon compounds with only O, N, S, Se or Te as ring hetero atoms
    • C12P17/16Preparation of heterocyclic carbon compounds with only O, N, S, Se or Te as ring hetero atoms containing two or more hetero rings
    • C12P17/165Heterorings having nitrogen atoms as the only ring heteroatoms
    • CCHEMISTRY; METALLURGY
    • C12BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12YENZYMES
    • C12Y101/00Oxidoreductases acting on the CH-OH group of donors (1.1)
    • C12Y101/01Oxidoreductases acting on the CH-OH group of donors (1.1) with NAD+ or NADP+ as acceptor (1.1.1)
    • C12Y101/01049Glucose-6-phosphate dehydrogenase (1.1.1.49)
    • CCHEMISTRY; METALLURGY
    • C12BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12YENZYMES
    • C12Y101/00Oxidoreductases acting on the CH-OH group of donors (1.1)
    • C12Y101/99Oxidoreductases acting on the CH-OH group of donors (1.1) with other acceptors (1.1.99)
    • C12Y101/9901Glucose dehydrogenase (acceptor) (1.1.99.10)
    • CCHEMISTRY; METALLURGY
    • C12BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12YENZYMES
    • C12Y103/00Oxidoreductases acting on the CH-CH group of donors (1.3)
    • C12Y103/01Oxidoreductases acting on the CH-CH group of donors (1.3) with NAD+ or NADP+ as acceptor (1.3.1)
    • C12Y103/01024Biliverdin reductase (1.3.1.24)
    • CCHEMISTRY; METALLURGY
    • C12BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12YENZYMES
    • C12Y114/00Oxidoreductases acting on paired donors, with incorporation or reduction of molecular oxygen (1.14)
    • C12Y114/99Miscellaneous (1.14.99)
    • C12Y114/99003Heme oxygenase (1.14.99.3)

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Genetics & Genomics (AREA)
  • Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Zoology (AREA)
  • Wood Science & Technology (AREA)
  • Bioinformatics & Cheminformatics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Health & Medical Sciences (AREA)
  • Biochemistry (AREA)
  • Biomedical Technology (AREA)
  • Biotechnology (AREA)
  • Molecular Biology (AREA)
  • Microbiology (AREA)
  • Physics & Mathematics (AREA)
  • Biophysics (AREA)
  • Plant Pathology (AREA)
  • Medicinal Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Enzymes And Modification Thereof (AREA)

Abstract

本发明属于生物催化技术领域。本发明公开了一株重组菌株HO‑BVR‑GDH pZG‑BW25113及其利用该菌株全细胞催化生产胆红素的方法,所述重组菌株HO‑BVR‑GDH pZG‑BW25113是将质粒pBAD‑HO‑BVR‑GDH转化至底盘细胞pZG‑BW25113中获得。本发明的方法通过构建辅因子循环再生体系,无需额外添加辅因子,进一步降低生产成本;同时具有底物原料充足,生产成本低、反应温和、转化率高、生产效率高等特点,适合胆红素的工业化生产。

Description

重组菌株及其全细胞催化生产胆红素的方法
技术领域
本发明属于生物催化技术领域。
背景技术
胆红素(bilirubin,C33H36N4O8,CAS:635-65-4)是一个具有直链四吡咯结构的二烯胆素类化合物,是胆汁中的主要色素,为淡橙色或深红棕色的单斜晶体,是哺乳类动物体内血红蛋白辅基血红素的代谢产物,具有很多重要的药理作用。它不仅能够镇静,镇惊,降压,解热等作用,还可治疗血清肝炎,肝硬化等疾病。近年来研究发现其还具有促进红细胞新生、抗癌、抗病毒和抗氧化作用等,在化妆品,保健品等领域也逐渐开发应用。
天然牛黄是牛的胆结石,在我国具有二千多年的药用历史,是一味珍贵的中药材,在我国很多中药名方中,天然牛黄都起着不可替代的作用,如安宫牛黄丸、回天再造丸等。目前市场上的牛黄有天然牛黄、体外培育牛黄、人工牛黄等。鉴于天然牛黄、体外培育牛黄来之不易以及价格居高不下,所以国内牛黄市场以人工牛黄的应用为主,其中国内约650种中成药含有人工牛黄。因此,人工牛黄的应用市场前景广阔。
胆红素是天然牛黄、体外培育牛黄的主要有效成份和人工牛黄不可缺少的原料。经研究,人工牛黄中胆红素含量约0.7%,远低于天然牛黄(>25%)和体外培育牛黄(>35%)中胆红素的含量标准,因此,人工牛黄的药效明显差于天然牛黄和体外培育牛黄的药用价值。鉴于胆红素的来源有限,药物配制中主要以价格适中,原料易得的人工牛黄的广泛使用为主。
胆红素以钾、钠、钙盐的形式存在于猪、牛、羊、马等动物的胆汁或胆结石中,且含量甚微。如猪胆汁中含量约0.5‰,受目前广泛使用的技术所限,提取1公斤高纯度的胆红素需要近于4吨的粗猪胆,导致生产胆红素的成本较高,价格昂贵,因此急需开发合适的替代工艺实现大规模生产。
全球胆红素市场年需求量约5吨。由于胆红素的空间结构复杂,关于其化学合成的工艺至今尚未成熟开发。目前围绕胆红素的生产方法主要有两种:一种方法是物理提取,即以猪胆等动物胆汁作为原料通过有机溶剂提取,是目前市场上胆红素的主要获取方法。该模式几乎是目前国内胆红素生产厂家采用的通用方法。鉴于胆红素在动物胆汁中的含量甚微,这种方法需要消耗大量的胆源,从而导致生产成本居高不下,纯利润低。另一种方法是酶催化,用纯酶或粗酶液催化新鲜的动物血液或者血红素生产胆红素,目前关于酶催化的研究侧重于文章发表,专利较少,但共同不足之处在于底物投料量低,成本高,产业化前景渺茫。如公开号CN 103114110A的中国专利以血红素为底物,在外加辅因子NADPH下,用固定化的血红素加氧酶和胆绿素还原酶催化0.1mM血红素转变成胆红素。由于投料量低且需要额外添加昂贵的辅因子,由此导致成本并无明显下降。
发明内容
有鉴于此,本发明提供了一株重组菌株HO-BVR-GDH pZG-BW25113,所述重组菌株HO-BVR-GDH pZG-BW25113是将质粒pBAD-HO-BVR-GDH转化至底盘细胞pZG-BW25113中获得;所述质粒pBAD-HO-BVR-GDH是用T4DNA连接酶连接HO基因片段、BVR基因片段、GDH基因片段和pBAD线性载体后获得;所述HO基因的氨基酸序列如SEQ ID NO.6所示;所述BVR基因的氨基酸序列如SEQ ID NO.8所示;所述GDH基因的氨基酸序列如SEQ ID NO.10所示;所述底盘细胞pZG-BW25113是由大肠杆菌BW25113菌株敲除pgi基因、在zwf基因前插入araC启动子基因和在gndA基因前插入araC启动子基因获得;所述pgi基因的氨基酸序列如SEQ ID NO.13所示;所述zwf基因的氨基酸序列如SEQ ID NO.2所示;所述gndA基因的氨基酸序列如SEQID NO.4所示;所述araC启动子基因的核苷酸序列如SEQ ID NO.11所示。
同时,本发明还提供了一种全细胞催化生产胆红素的方法,包括如下步骤:重组菌株HO-BVR-GDH pZG-BW25113在葡萄糖和PB缓冲溶液中催化羟高铁血红素变成胆红素。
在本发明的具体实施例中,所述重组菌株HO-BVR-GDH pZG-BW25113加入量为1g。
在本发明的具体实施例中,所述羟高铁血红素的终浓度为1g/L。
在本发明的具体实施例中,所述加入葡萄糖与羟高铁血红素的物质量比为1:2。
在本发明的具体实施例中,所述PB缓冲溶液为50mM。
在本发明的具体实施例中,所述催化的反应条件为:pH为7.0。
在本发明的具体实施例中,所述催化的反应条件为:温度为25℃。
本发明具有以下有益效果:
(1)底物投料量高,反应时间短,操作简单,产物转化率高,且无任何副产物生成;
(2)实现了辅酶NAPDH/NADP+再生的高效全细胞催化生产胆红素,无需额外添加昂贵的辅酶,比现有已报道的生物催化的成本明显减低;
(3)解除原料匮乏对胆红素生产的影响,胆红素的产业化生产不再受猪胆等原料的限制。本发明的实施将为胆红素的规模化生产开辟新的道路。
附图说明
图1.全细胞催化生产胆红素的路线图。
图2.胆红素的液-质色谱分析图。
图3.胆红素的液-质色谱分析图。
具体实施方式
以下结合实施例对本发明作进一步详细说明,但并不因此将本发明限制在所述的实施例范围之中。
大肠杆菌BW25113菌株购自上海泽叶生物科技有限公司。
Escherichia coli K-12、pKD46和pCP20质粒购自北京润泽康生物科技有限公司。
pBAD载体购自北京庄盟国际生物基因科技有限公司。
5×蛋白胶上样缓冲液购自北京华博德亿生物技术有限公司,
SDS-PAGE蛋白分离胶制备参考《分子生物学实验指南》。
未特别说明的实验步骤均按照试剂说明书或参考《分子生物学实验指南》操作。
实施例1
底盘菌株pZG-BW25113的构建
利用Red-同源重组技术,将按照以下步骤构建相应底盘菌株。
1.构建Δpgi BW25113底盘菌株
(1)准备打靶片段。
以大肠杆菌BW25113菌株为模板,设计基于pgi基因的PCR扩增引物。所述pgi基因的核苷酸序列如SEQ ID NO.12所示和氨基酸序列如SEQ ID NO.13所示。
打靶片段的PCR扩增引物上下游均含有长约30bp的同源序列,且含有卡那抗性基因用于LB平板阳性克隆筛选。
(2)制备pKD46-BW25113电转感受态细胞。
将质粒pKD46转入BW25113感受态细胞中,后涂于氨苄抗性LB平板,30℃培养过夜。次日随机挑取单菌落,转入50ml LB液体培养基中,37℃、200r/min培养至OD600约0.5时离心收集菌体,按照电转化操作流程,获得pKD46-BW25113电转感受态细胞。
(3)电转化打靶片段。
按照电转操作流程,将打靶片段转入制备的pKD46-BW25113感受态细胞中,30℃、150r/min培养1h后,涂含卡那霉素抗性的LB平板,30℃静置培养过夜。随后挑取单克隆,PCR扩增,琼脂糖凝胶电泳验证打靶片段整合成功的单菌落涂无抗性LB平板,42℃静置培养过夜。
(4)消除抗性。
按照化转感受态制备过程获得kana-ΔmazG BW25113感受态细胞,转入含氨苄抗性pCP20质粒,LB平板静置培养过夜后,随机挑取单菌落转入5mlLLB液体试管中,加入质量浓度0.5%L-阿拉伯糖培养10h后涂卡那霉素抗性LB平板,无菌斑明显出现的平板表明Δpgi基因敲除成功。
2.构建paraC zwf-Δpgi BW25113底盘菌株
(1)准备打靶片段。
以Δpgi BW25113底盘菌株为模板,设计基于zwf基因的PCR扩增引物。所述zwf基因的核苷酸序列如如SEQ ID NO.1所示和氨基酸序列如SEQ ID NO.2所示。
打靶片段的PCR扩增引物上下游均含有长约30bp的同源序列,含有araC启动子基因序列以及卡那霉素抗性基因序列用于LB平板阳性克隆筛选。所述araC启动子基因的核苷酸序列如SEQ ID NO.11所示。
(2)制备pKD46-Δpgi BW25113电转感受态细胞。
将氨苄抗性的质粒pKD46转入大肠杆菌Δpgi BW25113底盘菌株中,后涂于氨苄抗性LB平板,30℃培养过夜。次日随机挑取单菌落,转入50ml LB液体培养基中,37℃、200r/min培养至OD600约0.5时离心收集菌体,按照电转感受态操作步骤,获得pKD46-ΔpgiBW25113电转感受态细胞。(3)电转化打靶片段。
按照电转操作流程,将打靶片段转入pKD46-Δpgi BW25113感受态细胞中,30℃、150r/min培养1h后,涂含卡那霉素抗性的LB平板,30℃静置培养过夜。
(4)消除抗性。
按照化转感受态制备过程获得kana-paraC zwf-Δpgi BW25113感受态细胞,转入含氨苄抗性pCP20质粒,LB平板静置培养过夜后,随机挑取单菌落转入5mlLLB液体试管中,加入质量浓度0.5%L-阿拉伯糖培养10h后涂卡那霉素抗性LB平板,无菌斑明显出现的平板表明paraC zwf-Δpgi BW25113底盘菌株构建成功。
2.构建pZG BW25113底盘菌株
(1)准备打靶片段。
以paraC zwf-Δpgi BW25113底盘菌株为模板,设计基于gndA基因的PCR扩增引物。所述gndA基因的核苷酸序列如SEQ ID NO.3所示和氨基酸序列如SEQ ID NO.4所示。
打靶片段的PCR扩增引物上下游均含有长约30bp的同源序列,含有araC启动子基因序列以及卡那霉素抗性基因用于LB平板阳性克隆筛选。所述araC启动子基因的碱基序列如SEQ ID NO.11。
(2)制备pKD46-paraC zwf-Δpgi BW25113电转感受态细胞。
按照电转感受态操作步骤,获得pKD46-paraC zwf-Δpgi BW25113电转感受态细胞。
(3)按照电转操作流程,将打靶片段转入制备的pKD46-paraC zwf-Δpgi BW25113感受态细胞中,30℃、150r/min培养1h后,涂含卡那霉素抗性的LB平板,30℃静置培养过夜。
(4)消除抗性。
按照化转感受态制备过程获得kana-paraC zwf-paraC gndA-Δpgi BW25113感受态细胞,转入含氨苄抗性pCP20质粒,LB平板静置培养过夜后,随机挑取单菌落转入5mlLLB液体试管中,加入0.5%L-阿拉伯糖培养10h后涂卡那霉素抗性LB平板,无菌斑明显出现的平板表明pZG-BW25113底盘菌株构建成功。
实施例2
重组菌株HO-BVR-GDH pZG-BW25113的构建
1.血红素加氧酶HO、胆绿素还原酶BVR和葡萄糖脱氢酶GDH共表达载体pBAD-HO-BVR-GDH的构建
来源于Macaca mulatta的血红素加氧酶HO基因,其基因的核苷酸序列如SEQ IDNO.5,氨基酸序列如SEQ ID NO.6;
设计引物对如下:
5’-ctagctagcatgtcagcggaagtggaaacc-3’,
和5’-ccatcgattcacatgtagtaccaggccaag-3’;
来源于Epinephelus lanceolatus(LOC117254844)的胆绿素还原酶BVR基因,其基因序列如SEQ ID NO.7,氨基酸序列如SEQ ID NO.8;
设计引物对如下:
5’-ccatcgattctagagaaagaggggacaaactagatggagacagagaagaagactcagcca-3’,
和5’-ccctcgagttaaaaagcaaaggctcctacgctgactgtggccagaaccacaaaaagtcct-3’;
来源于Bacillus megaterium(ATCC 14581)的葡萄糖脱氢酶GDH基因,其基因序列如SEQ ID NO.9,氨基酸序列如SEQ ID NO.10;
设计引物对如下:
5’-ccctcgagtctagagaaagatccgatgtactagatgtatacagatttaaaagataaagta-3’,
和5’-cgggtaccttagcctcttcctgcttggaaagaagggtacagcgtcataccaccatcagc-3’;
通过PCR进行扩增,用NcoI和NheI、NheI和XhoI、XhoI和KpnI分别进行酶切基因片段,PCR得到的基因序列两端分别带有NcoI和NheI、NheI和XhoI、XhoI和KpnI两个酶切位点,PCR产物经琼脂糖凝胶DNA回收试剂盒回收目的片段。
NcoI、KpnI酶切pBAD质粒载体,用T4 DNA连接酶连接HO基因片段、BVR基因片段、GDH基因片段和pBAD线性载体,连接产物转化DH5α后涂氨苄霉素抗性平板,37℃过夜培养后挑单菌落至装有5mL LB的试管培养,用质粒提取试剂盒提取质粒,PCR扩增验证基因片段大小正确后送测序,测序正确的质粒命名为质粒pBAD-HO-BVR-GDH。
2.重组菌株的转化
按照化转操作流程,将质粒pBAD-HO-BVR-GDH转化至底盘细胞pZG-BW25113中,获得重组菌株HO-BVR-GDH pZG-BW25113,并以甘油菌菌种形式保存,得甘油管菌种HO-BVR-GDH pZG-BW25113。
实施例3
重组菌株的发酵培养
吸取少量实施例2中的甘油菌种HO-BVR-GDH pZG-BW25113,加入5mL,含100μg/mL氨苄霉素的LB液体试管中,37℃、200rpm过夜活化。
将过夜活化的种子液按1%比例接种到800mL,含100μg/mL氨苄霉素的TB发酵培养基,37℃、200rpm培养至OD600约0.6左右时加入终浓度质量浓度为1%L-阿拉伯糖,30℃、200rpm继续诱导培养8-10h,离心收集细胞,得全细胞催化剂菌体HO-BVR-GDH pZGBW25113。
实施例4
高效全细胞催化生产胆红素
重组菌株HO-BVR-GDH pZG-BW25113全细胞催化血红素至胆红素
在50mM,pH7.0,10mL的PB缓冲溶液中加入实施例3制备的全细胞催化剂菌体HO-BVR-GDH pZGBW25113 1.0g,加入羟高铁血红素0.01g,加入0.5倍于羟高铁血红素量的葡萄糖(摩尔比),控制pH在7.0、25℃的条件下反应,HPLC监控反应进程直至全部转变成胆红素。
胆红素的检测分析条件:取上述样品溶液300ul,12000rpm高速离心2min后取上清溶液,用0.22um水相过滤器过滤,使用高效液相色谱仪分析,所用色谱柱为Agilent ZORBAXC18 3.5μm色谱柱,流动相为甲醇:甲酸水溶液(pH 5)=50:50,流速0.8ml/min,色谱柱温度为35℃,λmax=435nm。
将上述样品溶液移入分液漏斗中,加入2倍体积的氯仿萃取3次,合并有机相,加入无水Na2SO4过夜干燥后旋蒸至恒重,即可得到胆红素产品0.85g。产物摩尔收率为95.1%,纯度为98.3%。
本发明的方法通过构建辅因子循环再生体系,无需额外添加辅因子,进一步降低生产成本;同时具有底物原料充足,生产成本低、反应温和、转化率高、生产效率高等特点,适合胆红素的工业化生产。
以上所述仅是本发明的优选实施方式,本发明的保护范围并不仅局限于上述实施例,凡属于本发明思路下的技术方案均属于本发明的保护范围。应当指出,对于本技术领域的普通技术人员来说,在不脱离本发明原理前提下的若干改进和润饰,这些改进和润饰也应视为本发明的保护范围。
序列表
<110> 中国科学院微生物研究所
<120> 重组菌株及其全细胞催化生产胆红素的方法
<130> IM2022043I
<160> 13
<170> SIPOSequenceListing 1.0
<210> 1
<211> 1476
<212> DNA
<213> 人工序列(Artificial Sequence)
<400> 1
atggcggtaa cgcaaacagc ccaggcctgt gacctggtca ttttcggcgc gaaaggcgac 60
cttgcgcgtc gtaaattgct gccttccctg tatcaactgg aaaaagccgg tcagctcaac 120
ccggacaccc ggattatcgg cgtagggcgt gctgactggg ataaagcggc atataccaaa 180
gttgtccgcg aggcgctcga aactttcatg aaagaaacca ttgatgaagg tttatgggac 240
accctgagtg cacgtctgga tttttgtaat ctcgatgtca atgacactgc tgcattcagc 300
cgtctcggcg cgatgctgga tcaaaaaaat cgtatcacca ttaactactt tgccatgccg 360
cccagcactt ttggcgcaat ttgcaaaggg cttggcgagg caaaactgaa tgctaaaccg 420
gcacgcgtag tcatggagaa accgctgggg acgtcgctgg cgacctcgca ggaaatcaat 480
gatcaggttg gcgaatactt cgaggagtgc caggtttacc gtatcgacca ctatcttggt 540
aaagaaacgg tgctgaacct gttggcgctg cgttttgcta actccctgtt tgtgaataac 600
tgggacaatc gcaccattga tcatgttgag attaccgtgg cagaagaagt ggggatcgaa 660
gggcgctggg gctattttga taaagccggt cagatgcgcg acatgatcca gaaccacctg 720
ctgcaaattc tttgcatgat tgcgatgtct ccgccgtctg acctgagcgc agacagcatc 780
cgcgatgaaa aagtgaaagt actgaagtct ctgcgccgca tcgaccgctc caacgtacgc 840
gaaaaaaccg tacgcgggca atatactgcg ggcttcgccc agggcaaaaa agtgccggga 900
tatctggaag aagagggcgc gaacaagagc agcaatacag aaactttcgt ggcgatccgc 960
gtcgacattg ataactggcg ctgggccggt gtgccattct acctgcgtac tggtaaacgt 1020
ctgccgacca aatgttctga agtcgtggtc tatttcaaaa cacctgaact gaatctgttt 1080
aaagaatcgt ggcaggatct gccgcagaat aaactgacta tccgtctgca acctgatgaa 1140
ggcgtggata tccaggtact gaataaagtt cctggccttg accacaaaca taacctgcaa 1200
atcaccaagc tggatctgag ctattcagaa acctttaatc agacgcatct ggcggatgcc 1260
tatgaacgtt tgctgctgga aaccatgcgt ggtattcagg cactgtttgt acgtcgcgac 1320
gaagtggaag aagcctggaa atgggtagac tccattactg aggcgtgggc gatggacaat 1380
gatgcgccga aaccgtatca ggccggaacc tggggacccg ttgcctcggt ggcgatgatt 1440
acccgtgatg gtcgttcctg gaatgagttt gagtaa 1476
<210> 2
<211> 491
<212> PRT
<213> 人工序列(Artificial Sequence)
<400> 2
Met Ala Val Thr Gln Thr Ala Gln Ala Cys Asp Leu Val Ile Phe Gly
1 5 10 15
Ala Lys Gly Asp Leu Ala Arg Arg Lys Leu Leu Pro Ser Leu Tyr Gln
20 25 30
Leu Glu Lys Ala Gly Gln Leu Asn Pro Asp Thr Arg Ile Ile Gly Val
35 40 45
Gly Arg Ala Asp Trp Asp Lys Ala Ala Tyr Thr Lys Val Val Arg Glu
50 55 60
Ala Leu Glu Thr Phe Met Lys Glu Thr Ile Asp Glu Gly Leu Trp Asp
65 70 75 80
Thr Leu Ser Ala Arg Leu Asp Phe Cys Asn Leu Asp Val Asn Asp Thr
85 90 95
Ala Ala Phe Ser Arg Leu Gly Ala Met Leu Asp Gln Lys Asn Arg Ile
100 105 110
Thr Ile Asn Tyr Phe Ala Met Pro Pro Ser Thr Phe Gly Ala Ile Cys
115 120 125
Lys Gly Leu Gly Glu Ala Lys Leu Asn Ala Lys Pro Ala Arg Val Val
130 135 140
Met Glu Lys Pro Leu Gly Thr Ser Leu Ala Thr Ser Gln Glu Ile Asn
145 150 155 160
Asp Gln Val Gly Glu Tyr Phe Glu Glu Cys Gln Val Tyr Arg Ile Asp
165 170 175
His Tyr Leu Gly Lys Glu Thr Val Leu Asn Leu Leu Ala Leu Arg Phe
180 185 190
Ala Asn Ser Leu Phe Val Asn Asn Trp Asp Asn Arg Thr Ile Asp His
195 200 205
Val Glu Ile Thr Val Ala Glu Glu Val Gly Ile Glu Gly Arg Trp Gly
210 215 220
Tyr Phe Asp Lys Ala Gly Gln Met Arg Asp Met Ile Gln Asn His Leu
225 230 235 240
Leu Gln Ile Leu Cys Met Ile Ala Met Ser Pro Pro Ser Asp Leu Ser
245 250 255
Ala Asp Ser Ile Arg Asp Glu Lys Val Lys Val Leu Lys Ser Leu Arg
260 265 270
Arg Ile Asp Arg Ser Asn Val Arg Glu Lys Thr Val Arg Gly Gln Tyr
275 280 285
Thr Ala Gly Phe Ala Gln Gly Lys Lys Val Pro Gly Tyr Leu Glu Glu
290 295 300
Glu Gly Ala Asn Lys Ser Ser Asn Thr Glu Thr Phe Val Ala Ile Arg
305 310 315 320
Val Asp Ile Asp Asn Trp Arg Trp Ala Gly Val Pro Phe Tyr Leu Arg
325 330 335
Thr Gly Lys Arg Leu Pro Thr Lys Cys Ser Glu Val Val Val Tyr Phe
340 345 350
Lys Thr Pro Glu Leu Asn Leu Phe Lys Glu Ser Trp Gln Asp Leu Pro
355 360 365
Gln Asn Lys Leu Thr Ile Arg Leu Gln Pro Asp Glu Gly Val Asp Ile
370 375 380
Gln Val Leu Asn Lys Val Pro Gly Leu Asp His Lys His Asn Leu Gln
385 390 395 400
Ile Thr Lys Leu Asp Leu Ser Tyr Ser Glu Thr Phe Asn Gln Thr His
405 410 415
Leu Ala Asp Ala Tyr Glu Arg Leu Leu Leu Glu Thr Met Arg Gly Ile
420 425 430
Gln Ala Leu Phe Val Arg Arg Asp Glu Val Glu Glu Ala Trp Lys Trp
435 440 445
Val Asp Ser Ile Thr Glu Ala Trp Ala Met Asp Asn Asp Ala Pro Lys
450 455 460
Pro Tyr Gln Ala Gly Thr Trp Gly Pro Val Ala Ser Val Ala Met Ile
465 470 475 480
Thr Arg Asp Gly Arg Ser Trp Asn Glu Phe Glu
485 490
<210> 3
<211> 1407
<212> DNA
<213> 人工序列(Artificial Sequence)
<400> 3
atgtccaagc aacagatcgg cgtagtcggt atggcagtga tgggacgcaa ccttgcgctc 60
aacatcgaaa gccgtggtta taccgtctct attttcaacc gttcccgtga gaagacggaa 120
gaagtgattg ccgaaaatcc aggcaagaaa ctggttcctt actatacggt gaaagagttt 180
gtcgaatctc tggaaacgcc tcgtcgcatc ctgttaatgg tgaaagcagg tgcaggcacg 240
gatgctgcta ttgattccct caaaccatat ctcgataaag gagacatcat cattgatggt 300
ggtaacacct tcttccagga cactattcgt cgtaatcgtg agctttcagc agagggcttt 360
aacttcatcg gtaccggtgt ttctggcggt gaagaggggg cgctgaaagg tccttctatt 420
atgcctggtg gccagaaaga agcctatgaa ttggtagcac cgatcctgac caaaatcgcc 480
gccgtagctg aagacggtga accatgcgtt acctatattg gtgccgatgg cgcaggtcac 540
tatgtgaaga tggttcacaa cggtattgaa tacggcgata tgcagctgat tgctgaagcc 600
tattctctgc ttaaaggtgg cctgaacctc accaacgaag aactggcgca gacctttacc 660
gagtggaata acggtgaact gagcagttac ctgatcgaca tcaccaaaga tatcttcacc 720
aaaaaagatg aagacggtaa ctacctggtt gatgtgatcc tggatgaagc ggctaacaaa 780
ggtaccggta aatggaccag ccagagcgcg ctggatctcg gcgaaccgct gtcgctgatt 840
accgagtctg tgtttgcacg ttatatctct tctctgaaag atcagcgtgt tgccgcatct 900
aaagttctct ctggtccgca agcacagcca gcaggcgaca aggctgagtt catcgaaaaa 960
gttcgtcgtg cgctgtatct gggcaaaatc gtttcttacg cccagggctt ctctcagctg 1020
cgtgctgcgt ctgaagagta caactgggat ctgaactacg gcgaaatcgc gaagattttc 1080
cgtgctggct gcatcatccg tgcgcagttc ctgcagaaaa tcaccgatgc ttatgccgaa 1140
aatccacaga tcgctaacct gttgctggct ccgtacttca agcaaattgc cgatgactac 1200
cagcaggcgc tgcgtgatgt cgttgcttat gcagtacaga acggtattcc ggttccgacc 1260
ttctccgcag cggttgccta ttacgacagc taccgtgctg ctgttctgcc tgcgaacctg 1320
atccaggcac agcgtgacta ttttggtgcg catacttata agcgtattga taaagaaggt 1380
gtgttccata ccgaatggct ggattaa 1407
<210> 4
<211> 468
<212> PRT
<213> 人工序列(Artificial Sequence)
<400> 4
Met Ser Lys Gln Gln Ile Gly Val Val Gly Met Ala Val Met Gly Arg
1 5 10 15
Asn Leu Ala Leu Asn Ile Glu Ser Arg Gly Tyr Thr Val Ser Ile Phe
20 25 30
Asn Arg Ser Arg Glu Lys Thr Glu Glu Val Ile Ala Glu Asn Pro Gly
35 40 45
Lys Lys Leu Val Pro Tyr Tyr Thr Val Lys Glu Phe Val Glu Ser Leu
50 55 60
Glu Thr Pro Arg Arg Ile Leu Leu Met Val Lys Ala Gly Ala Gly Thr
65 70 75 80
Asp Ala Ala Ile Asp Ser Leu Lys Pro Tyr Leu Asp Lys Gly Asp Ile
85 90 95
Ile Ile Asp Gly Gly Asn Thr Phe Phe Gln Asp Thr Ile Arg Arg Asn
100 105 110
Arg Glu Leu Ser Ala Glu Gly Phe Asn Phe Ile Gly Thr Gly Val Ser
115 120 125
Gly Gly Glu Glu Gly Ala Leu Lys Gly Pro Ser Ile Met Pro Gly Gly
130 135 140
Gln Lys Glu Ala Tyr Glu Leu Val Ala Pro Ile Leu Thr Lys Ile Ala
145 150 155 160
Ala Val Ala Glu Asp Gly Glu Pro Cys Val Thr Tyr Ile Gly Ala Asp
165 170 175
Gly Ala Gly His Tyr Val Lys Met Val His Asn Gly Ile Glu Tyr Gly
180 185 190
Asp Met Gln Leu Ile Ala Glu Ala Tyr Ser Leu Leu Lys Gly Gly Leu
195 200 205
Asn Leu Thr Asn Glu Glu Leu Ala Gln Thr Phe Thr Glu Trp Asn Asn
210 215 220
Gly Glu Leu Ser Ser Tyr Leu Ile Asp Ile Thr Lys Asp Ile Phe Thr
225 230 235 240
Lys Lys Asp Glu Asp Gly Asn Tyr Leu Val Asp Val Ile Leu Asp Glu
245 250 255
Ala Ala Asn Lys Gly Thr Gly Lys Trp Thr Ser Gln Ser Ala Leu Asp
260 265 270
Leu Gly Glu Pro Leu Ser Leu Ile Thr Glu Ser Val Phe Ala Arg Tyr
275 280 285
Ile Ser Ser Leu Lys Asp Gln Arg Val Ala Ala Ser Lys Val Leu Ser
290 295 300
Gly Pro Gln Ala Gln Pro Ala Gly Asp Lys Ala Glu Phe Ile Glu Lys
305 310 315 320
Val Arg Arg Ala Leu Tyr Leu Gly Lys Ile Val Ser Tyr Ala Gln Gly
325 330 335
Phe Ser Gln Leu Arg Ala Ala Ser Glu Glu Tyr Asn Trp Asp Leu Asn
340 345 350
Tyr Gly Glu Ile Ala Lys Ile Phe Arg Ala Gly Cys Ile Ile Arg Ala
355 360 365
Gln Phe Leu Gln Lys Ile Thr Asp Ala Tyr Ala Glu Asn Pro Gln Ile
370 375 380
Ala Asn Leu Leu Leu Ala Pro Tyr Phe Lys Gln Ile Ala Asp Asp Tyr
385 390 395 400
Gln Gln Ala Leu Arg Asp Val Val Ala Tyr Ala Val Gln Asn Gly Ile
405 410 415
Pro Val Pro Thr Phe Ser Ala Ala Val Ala Tyr Tyr Asp Ser Tyr Arg
420 425 430
Ala Ala Val Leu Pro Ala Asn Leu Ile Gln Ala Gln Arg Asp Tyr Phe
435 440 445
Gly Ala His Thr Tyr Lys Arg Ile Asp Lys Glu Gly Val Phe His Thr
450 455 460
Glu Trp Leu Asp
465
<210> 5
<211> 951
<212> DNA
<213> Hevea brasiliensis
<400> 5
atgtcagcgg aagtggaaac ctcagagggg gtagacgaat cagagaaaaa gaactctggg 60
gccttagaaa aggagaacca aatgagaatg gctgacctct cggagctcct gaaggaaggg 120
accaaggaag cacacgaccg ggcagaaaac acccagtttg tcaaggactt cttgaaaggc 180
aacattaaga aggagctgtt taagctggcc accacggcac tttactttac atactcagcc 240
ctcgaggagg aaatggagcg caacaaggac catccagcct ttgccccctt gtacttcccc 300
atggagctgc accggaagga ggcgttgacc aaggacatgg aatatttctt tggtgaaaac 360
tgggaggagc aggtgcagtg ccccaaggct gccaaaaagt acgtggagcg gatccactac 420
atagggcaga atgagccgga gctactggtg gcccatgcgt acacccgcta catgggggac 480
ctctcggggg gccaggtgct gaagaaggtg gcccagcgag cactgaaact ccccagcaca 540
ggggaaggga cccagttcta cctgtttgag aatgtggaca atgcccagca gttcaagcag 600
ctctaccgag ccaggatgaa cgccctggac ctgaacatga agaccaaaga gaggatcgtg 660
gaggaggcca acaaggcttt tgagtataac atgcagatat tcaatgaact ggaccaggcc 720
ggctccacgc tggccagaga gaccttggag gatgggttcc ctgtacacga tgggaaagga 780
gacatgcgta aatgcccttt ctacgctggt gagcaagaca aaggtgccct ggagggcagc 840
agctgtccct tccgaacagc catggctgtg ctgaggaagc ccagcctcca gttcatcctg 900
gccgctggca tggccctagc tgctggactc ttggcctggt actacatgtg a 951
<210> 6
<211> 316
<212> PRT
<213> Hevea brasiliensis
<400> 6
Met Ser Ala Glu Val Glu Thr Ser Glu Gly Val Asp Glu Ser Glu Lys
1 5 10 15
Lys Asn Ser Gly Ala Leu Glu Lys Glu Asn Gln Met Arg Met Ala Asp
20 25 30
Leu Ser Glu Leu Leu Lys Glu Gly Thr Lys Glu Ala His Asp Arg Ala
35 40 45
Glu Asn Thr Gln Phe Val Lys Asp Phe Leu Lys Gly Asn Ile Lys Lys
50 55 60
Glu Leu Phe Lys Leu Ala Thr Thr Ala Leu Tyr Phe Thr Tyr Ser Ala
65 70 75 80
Leu Glu Glu Glu Met Glu Arg Asn Lys Asp His Pro Ala Phe Ala Pro
85 90 95
Leu Tyr Phe Pro Met Glu Leu His Arg Lys Glu Ala Leu Thr Lys Asp
100 105 110
Met Glu Tyr Phe Phe Gly Glu Asn Trp Glu Glu Gln Val Gln Cys Pro
115 120 125
Lys Ala Ala Lys Lys Tyr Val Glu Arg Ile His Tyr Ile Gly Gln Asn
130 135 140
Glu Pro Glu Leu Leu Val Ala His Ala Tyr Thr Arg Tyr Met Gly Asp
145 150 155 160
Leu Ser Gly Gly Gln Val Leu Lys Lys Val Ala Gln Arg Ala Leu Lys
165 170 175
Leu Pro Ser Thr Gly Glu Gly Thr Gln Phe Tyr Leu Phe Glu Asn Val
180 185 190
Asp Asn Ala Gln Gln Phe Lys Gln Leu Tyr Arg Ala Arg Met Asn Ala
195 200 205
Leu Asp Leu Asn Met Lys Thr Lys Glu Arg Ile Val Glu Glu Ala Asn
210 215 220
Lys Ala Phe Glu Tyr Asn Met Gln Ile Phe Asn Glu Leu Asp Gln Ala
225 230 235 240
Gly Ser Thr Leu Ala Arg Glu Thr Leu Glu Asp Gly Phe Pro Val His
245 250 255
Asp Gly Lys Gly Asp Met Arg Lys Cys Pro Phe Tyr Ala Gly Glu Gln
260 265 270
Asp Lys Gly Ala Leu Glu Gly Ser Ser Cys Pro Phe Arg Thr Ala Met
275 280 285
Ala Val Leu Arg Lys Pro Ser Leu Gln Phe Ile Leu Ala Ala Gly Met
290 295 300
Ala Leu Ala Ala Gly Leu Leu Ala Trp Tyr Tyr Met
305 310 315
<210> 7
<211> 840
<212> DNA
<213> Epinephelus lanceolatus
<400> 7
atggagacag agaagaagac tcagccaaca gcagagcagc tgactgacat ggatctgtca 60
gagcaaatca aaaaggtgac aaaggatagt cacgtcagag cagaaaacac agaactgatg 120
ctgagcttcc agaggggacg agtctccctg ccgcagtaca agctcctcct gtgctcactg 180
tatgagatct accaggcctt ggaggaagag atggacagga attccgacca ccctggtgtc 240
gcacccattt acttcccagc tgaactggcc agactgaagg ctatcgaaaa agacctggaa 300
tatttctacg gccaggactg gagagagaag attgttgtcc ctgcagcaac taaaagatac 360
tgccacaggc tcagacaaat tggaaaagaa aaccctgaat ttctggttgc ccacgcttac 420
acacggtacc taggtgacct gtctggaggg cagatcctgg gtcgaattgc tcagaagtcc 480
atggggctga agagcggcga gggtctgtcc ttctttgcct tccctggtgt gtccagcccc 540
aacctgttca aacagctgta tcgcagccgc atgaacagca tcgagttgac ggaggaggag 600
aggaacggcg tgttggagga ggctgtcaga gcctttgagt ttaacattca ggtctttgac 660
gatttgcaga cattgctgag tgtcaccgaa aaccagccac agacctgttt gacacgctcc 720
acaccagtga agacactcca gatgcccgaa gccatcttta aaactgtccc actgctcagg 780
atggtgctag gactttttgt ggttctggcc acagtcagcg taggagcctt tgctttttaa 840
<210> 8
<211> 279
<212> PRT
<213> Epinephelus lanceolatus
<400> 8
Met Glu Thr Glu Lys Lys Thr Gln Pro Thr Ala Glu Gln Leu Thr Asp
1 5 10 15
Met Asp Leu Ser Glu Gln Ile Lys Lys Val Thr Lys Asp Ser His Val
20 25 30
Arg Ala Glu Asn Thr Glu Leu Met Leu Ser Phe Gln Arg Gly Arg Val
35 40 45
Ser Leu Pro Gln Tyr Lys Leu Leu Leu Cys Ser Leu Tyr Glu Ile Tyr
50 55 60
Gln Ala Leu Glu Glu Glu Met Asp Arg Asn Ser Asp His Pro Gly Val
65 70 75 80
Ala Pro Ile Tyr Phe Pro Ala Glu Leu Ala Arg Leu Lys Ala Ile Glu
85 90 95
Lys Asp Leu Glu Tyr Phe Tyr Gly Gln Asp Trp Arg Glu Lys Ile Val
100 105 110
Val Pro Ala Ala Thr Lys Arg Tyr Cys His Arg Leu Arg Gln Ile Gly
115 120 125
Lys Glu Asn Pro Glu Phe Leu Val Ala His Ala Tyr Thr Arg Tyr Leu
130 135 140
Gly Asp Leu Ser Gly Gly Gln Ile Leu Gly Arg Ile Ala Gln Lys Ser
145 150 155 160
Met Gly Leu Lys Ser Gly Glu Gly Leu Ser Phe Phe Ala Phe Pro Gly
165 170 175
Val Ser Ser Pro Asn Leu Phe Lys Gln Leu Tyr Arg Ser Arg Met Asn
180 185 190
Ser Ile Glu Leu Thr Glu Glu Glu Arg Asn Gly Val Leu Glu Glu Ala
195 200 205
Val Arg Ala Phe Glu Phe Asn Ile Gln Val Phe Asp Asp Leu Gln Thr
210 215 220
Leu Leu Ser Val Thr Glu Asn Gln Pro Gln Thr Cys Leu Thr Arg Ser
225 230 235 240
Thr Pro Val Lys Thr Leu Gln Met Pro Glu Ala Ile Phe Lys Thr Val
245 250 255
Pro Leu Leu Arg Met Val Leu Gly Leu Phe Val Val Leu Ala Thr Val
260 265 270
Ser Val Gly Ala Phe Ala Phe
275
<210> 9
<211> 786
<212> DNA
<213> Bacillus megaterium
<400> 9
atgtatacag atttaaaaga taaagtagtt gtaattacag gtggatcaac aggtttagga 60
cgcgcaatgg ctgttcgttt cggtcaagaa gaagcaaaag ttgttattaa ctattacaac 120
aatgaagaag aagctttaga tgcgaaaaaa gaagtagaag aagcaggcgg acaagcaatc 180
atcgttcaag gcgacgtaac aaaagaagaa gatgttgtaa accttgttca aacagctatt 240
aaagaattcg gtacattaga cgttatgatt aataacgctg gtgttgaaaa cccagttcct 300
tctcatgagt tatctttaga caactggaat aaagtaatcg atacaaactt aacgggcgca 360
tttttaggaa gccgcgaagc gattaaatat tttgttgaaa acgacattaa aggaaacgtt 420
attaacatgt ctagtgttca tgaaatgatt ccttggccat tatttgttca ttacgcagca 480
agtaaaggcg gtatgaaact aatgacgaaa acattggctc ttgaatatgc gccaaaaggt 540
atccgcgtaa ataacattgg accaggtgcg atgaacacac caattaacgc agagaaattt 600
gcagatcctg tacaacgtgc agacgtagaa agcatgattc caatgggtta catcggtaaa 660
ccagaagaag tagcagcagt tgcagcattc ttagcatcat cacaagcaag ctatgtaaca 720
ggtattacat tatttgctga tggtggtatg acgctgtacc cttctttcca agcaggaaga 780
ggctaa 786
<210> 10
<211> 261
<212> PRT
<213> Bacillus megaterium
<400> 10
Met Tyr Thr Asp Leu Lys Asp Lys Val Val Val Ile Thr Gly Gly Ser
1 5 10 15
Thr Gly Leu Gly Arg Ala Met Ala Val Arg Phe Gly Gln Glu Glu Ala
20 25 30
Lys Val Val Ile Asn Tyr Tyr Asn Asn Glu Glu Glu Ala Leu Asp Ala
35 40 45
Lys Lys Glu Val Glu Glu Ala Gly Gly Gln Ala Ile Ile Val Gln Gly
50 55 60
Asp Val Thr Lys Glu Glu Asp Val Val Asn Leu Val Gln Thr Ala Ile
65 70 75 80
Lys Glu Phe Gly Thr Leu Asp Val Met Ile Asn Asn Ala Gly Val Glu
85 90 95
Asn Pro Val Pro Ser His Glu Leu Ser Leu Asp Asn Trp Asn Lys Val
100 105 110
Ile Asp Thr Asn Leu Thr Gly Ala Phe Leu Gly Ser Arg Glu Ala Ile
115 120 125
Lys Tyr Phe Val Glu Asn Asp Ile Lys Gly Asn Val Ile Asn Met Ser
130 135 140
Ser Val His Glu Met Ile Pro Trp Pro Leu Phe Val His Tyr Ala Ala
145 150 155 160
Ser Lys Gly Gly Met Lys Leu Met Thr Lys Thr Leu Ala Leu Glu Tyr
165 170 175
Ala Pro Lys Gly Ile Arg Val Asn Asn Ile Gly Pro Gly Ala Met Asn
180 185 190
Thr Pro Ile Asn Ala Glu Lys Phe Ala Asp Pro Val Gln Arg Ala Asp
195 200 205
Val Glu Ser Met Ile Pro Met Gly Tyr Ile Gly Lys Pro Glu Glu Val
210 215 220
Ala Ala Val Ala Ala Phe Leu Ala Ser Ser Gln Ala Ser Tyr Val Thr
225 230 235 240
Gly Ile Thr Leu Phe Ala Asp Gly Gly Met Thr Leu Tyr Pro Ser Phe
245 250 255
Gln Ala Gly Arg Gly
260
<210> 11
<211> 879
<212> DNA
<213> 人工序列(Artificial Sequence)
<400> 11
atggctgaag cgcaaaatga tcccctgctg ccgggatact cgtttaacgc ccatctggtg 60
gcgggtttaa cgccgattga ggccaacggt tatctcgatt tttttatcga ccgaccgctg 120
ggaatgaaag gttatattct caatctcacc attcgcggtc agggggtggt gaaaaatcag 180
ggacgagaat ttgtctgccg accgggtgat attttgctgt tcccgccagg agagattcat 240
cactacggtc gtcatccgga ggctcgcgaa tggtatcacc agtgggttta ctttcgtccg 300
cgcgcctact ggcatgaatg gcttaactgg ccgtcaatat ttgccaatac gggtttcttt 360
cgcccggatg aagcgcacca gccgcatttc agcgacctgt ttgggcaaat cattaacgcc 420
gggcaagggg aagggcgcta ttcggagctg ctggcgataa atctgcttga gcaattgtta 480
ctgcggcgca tggaagcgat taacgagtcg ctccatccac cgatggataa tcgggtacgc 540
gaggcttgtc agtacatcag cgatcacctg gcagacagca attttgatat cgccagcgtc 600
gcacagcatg tttgcttgtc gccgtcgcgt ctgtcacatc ttttccgcca gcagttaggg 660
attagcgtct taagctggcg cgaggaccaa cgcattagtc aggcgaagct gcttttgagc 720
actacccgga tgcctatcgc caccgtcggt cgcaatgttg gttttgacga tcaactctat 780
ttctcgcgag tatttaaaaa atgcaccggg gccagcccga gcgagtttcg tgccggttgt 840
gaagaaaaag tgaatgatgt agccgtcaag ttgtcataa 879
<210> 12
<211> 1650
<212> DNA
<213> 人工序列(Artificial Sequence)
<400> 12
atgaaaaaca tcaatccaac gcagaccgct gcctggcagg cactacagaa acacttcgat 60
gaaatgaaag acgttacgat cgccgatctt tttgctaaag acggcgatcg tttttctaag 120
ttctccgcaa ccttcgacga tcagatgctg gtggattact ccaaaaaccg catcactgaa 180
gagacgctgg cgaaattaca ggatctggcg aaagagtgcg atctggcggg cgcgattaag 240
tcgatgttct ctggcgagaa gatcaaccgc actgaaaacc gcgccgtgct gcacgtagcg 300
ctgcgtaacc gtagcaatac cccgattttg gttgatggca aagacgtaat gccggaagtc 360
aacgcggtgc tggagaagat gaaaaccttc tcagaagcga ttatttccgg tgagtggaaa 420
ggttataccg gcaaagcaat cactgacgta gtgaacatcg ggatcggcgg ttctgacctc 480
ggcccataca tggtgaccga agctctgcgt ccgtacaaaa accacctgaa catgcacttt 540
gtttctaacg tcgatgggac tcacatcgcg gaagtgctga aaaaagtaaa cccggaaacc 600
acgctgttct tggtagcatc taaaaccttc accactcagg aaactatgac caacgcccat 660
agcgcgcgtg actggttcct gaaagcggca ggtgatgaaa aacacgttgc aaaacacttt 720
gcggcgcttt ccaccaatgc caaagccgtt ggcgagtttg gtattgatac tgccaacatg 780
ttcgagttct gggactgggt tggcggccgt tactctttgt ggtcagcgat tggcctgtcg 840
attgttctct ccatcggctt tgataacttc gttgaactgc tttccggcgc acacgcgatg 900
gacaagcatt tctccaccac gcctgccgag aaaaacctgc ctgtactgct ggcgctgatt 960
ggcatctggt acaacaattt ctttggtgcg gaaactgaag cgattctgcc gtatgaccag 1020
tatatgcacc gtttcgcggc gtacttccag cagggcaata tggagtccaa cggtaagtat 1080
gttgaccgta acggtaacgt tgtggattac cagactggcc cgattatctg gggtgaacca 1140
ggcactaacg gtcagcacgc gttctaccag ctgatccacc agggaaccaa aatggtaccg 1200
tgcgatttca tcgctccggc tatcacccat aacccgctct ctgatcatca ccagaaactg 1260
ctgtctaact tcttcgccca gaccgaagcg ctggcgtttg gtaaatcccg cgaagtggtt 1320
gagcaggaat atcgtgatca gggtaaagat ccggcaacgc ttgactacgt ggtgccgttc 1380
aaagtattcg aaggtaaccg cccgaccaac tccatcctgc tgcgtgaaat cactccgttc 1440
agcctgggtg cgttgattgc gctgtatgag cacaaaatct ttactcaggg cgtgatcctg 1500
aacatcttca ccttcgacca gtggggcgtg gaactgggta aacagctggc gaaccgtatt 1560
ctgccagagc tgaaagatga taaagaaatc agcagccacg atagctcgac caatggtctg 1620
attaaccgct ataaagcgtg gcgcggttaa 1650
<210> 13
<211> 549
<212> PRT
<213> 人工序列(Artificial Sequence)
<400> 13
Met Lys Asn Ile Asn Pro Thr Gln Thr Ala Ala Trp Gln Ala Leu Gln
1 5 10 15
Lys His Phe Asp Glu Met Lys Asp Val Thr Ile Ala Asp Leu Phe Ala
20 25 30
Lys Asp Gly Asp Arg Phe Ser Lys Phe Ser Ala Thr Phe Asp Asp Gln
35 40 45
Met Leu Val Asp Tyr Ser Lys Asn Arg Ile Thr Glu Glu Thr Leu Ala
50 55 60
Lys Leu Gln Asp Leu Ala Lys Glu Cys Asp Leu Ala Gly Ala Ile Lys
65 70 75 80
Ser Met Phe Ser Gly Glu Lys Ile Asn Arg Thr Glu Asn Arg Ala Val
85 90 95
Leu His Val Ala Leu Arg Asn Arg Ser Asn Thr Pro Ile Leu Val Asp
100 105 110
Gly Lys Asp Val Met Pro Glu Val Asn Ala Val Leu Glu Lys Met Lys
115 120 125
Thr Phe Ser Glu Ala Ile Ile Ser Gly Glu Trp Lys Gly Tyr Thr Gly
130 135 140
Lys Ala Ile Thr Asp Val Val Asn Ile Gly Ile Gly Gly Ser Asp Leu
145 150 155 160
Gly Pro Tyr Met Val Thr Glu Ala Leu Arg Pro Tyr Lys Asn His Leu
165 170 175
Asn Met His Phe Val Ser Asn Val Asp Gly Thr His Ile Ala Glu Val
180 185 190
Leu Lys Lys Val Asn Pro Glu Thr Thr Leu Phe Leu Val Ala Ser Lys
195 200 205
Thr Phe Thr Thr Gln Glu Thr Met Thr Asn Ala His Ser Ala Arg Asp
210 215 220
Trp Phe Leu Lys Ala Ala Gly Asp Glu Lys His Val Ala Lys His Phe
225 230 235 240
Ala Ala Leu Ser Thr Asn Ala Lys Ala Val Gly Glu Phe Gly Ile Asp
245 250 255
Thr Ala Asn Met Phe Glu Phe Trp Asp Trp Val Gly Gly Arg Tyr Ser
260 265 270
Leu Trp Ser Ala Ile Gly Leu Ser Ile Val Leu Ser Ile Gly Phe Asp
275 280 285
Asn Phe Val Glu Leu Leu Ser Gly Ala His Ala Met Asp Lys His Phe
290 295 300
Ser Thr Thr Pro Ala Glu Lys Asn Leu Pro Val Leu Leu Ala Leu Ile
305 310 315 320
Gly Ile Trp Tyr Asn Asn Phe Phe Gly Ala Glu Thr Glu Ala Ile Leu
325 330 335
Pro Tyr Asp Gln Tyr Met His Arg Phe Ala Ala Tyr Phe Gln Gln Gly
340 345 350
Asn Met Glu Ser Asn Gly Lys Tyr Val Asp Arg Asn Gly Asn Val Val
355 360 365
Asp Tyr Gln Thr Gly Pro Ile Ile Trp Gly Glu Pro Gly Thr Asn Gly
370 375 380
Gln His Ala Phe Tyr Gln Leu Ile His Gln Gly Thr Lys Met Val Pro
385 390 395 400
Cys Asp Phe Ile Ala Pro Ala Ile Thr His Asn Pro Leu Ser Asp His
405 410 415
His Gln Lys Leu Leu Ser Asn Phe Phe Ala Gln Thr Glu Ala Leu Ala
420 425 430
Phe Gly Lys Ser Arg Glu Val Val Glu Gln Glu Tyr Arg Asp Gln Gly
435 440 445
Lys Asp Pro Ala Thr Leu Asp Tyr Val Val Pro Phe Lys Val Phe Glu
450 455 460
Gly Asn Arg Pro Thr Asn Ser Ile Leu Leu Arg Glu Ile Thr Pro Phe
465 470 475 480
Ser Leu Gly Ala Leu Ile Ala Leu Tyr Glu His Lys Ile Phe Thr Gln
485 490 495
Gly Val Ile Leu Asn Ile Phe Thr Phe Asp Gln Trp Gly Val Glu Leu
500 505 510
Gly Lys Gln Leu Ala Asn Arg Ile Leu Pro Glu Leu Lys Asp Asp Lys
515 520 525
Glu Ile Ser Ser His Asp Ser Ser Thr Asn Gly Leu Ile Asn Arg Tyr
530 535 540
Lys Ala Trp Arg Gly
545

Claims (7)

1.重组菌株HO-BVR-GDH pZG-BW25113,其特征在于,所述重组菌株HO-BVR-GDH pZG-BW25113是将质粒pBAD-HO-BVR-GDH转化至底盘细胞pZG-BW25113中获得;
所述质粒pBAD-HO-BVR-GDH是用T4 DNA连接酶连接HO基因片段、BVR基因片段、GDH基因片段和pBAD线性载体后获得;所述HO基因的氨基酸序列如SEQ ID NO.6所示;所述BVR基因的氨基酸序列如SEQ ID NO.8所示;所述GDH基因的氨基酸序列如SEQ ID NO.10所示;
所述底盘细胞pZG-BW25113是由大肠杆菌BW25113菌株敲除pgi基因、在zwf基因前插入araC启动子基因和在gndA基因前插入araC启动子基因获得;所述pgi基因的氨基酸序列如SEQ ID NO.13所示;所述zwf基因的氨基酸序列如SEQ ID NO.2所示;所述gndA基因的氨基酸序列如SEQ ID NO.4所示;所述araC启动子基因的核苷酸序列如SEQ ID NO.11所示。
2.全细胞催化生产胆红素的方法,其特征在于,包括如下步骤:
权利要求1所述重组菌株HO-BVR-GDH pZG-BW25113在葡萄糖和PB缓冲溶液中催化羟高铁血红素变成胆红素。
3.依据权利要求2所述全细胞催化生产胆红素的方法,其特征在于,所述重组菌株HO-BVR-GDH pZG-BW25113与羟高铁血红素加入量的质量比为100:1。
4.依据权利要求2所述全细胞催化生产胆红素的方法,其特征在于,所述加入葡萄糖与羟高铁血红素的物质量比为1:2。
5.依据权利要求2所述全细胞催化生产胆红素的方法,其特征在于,所述PB缓冲溶液为50mM。
6.依据权利要求2所述全细胞催化生产胆红素的方法,其特征在于,所述催化的反应条件为:pH为7.0。
7.依据权利要求2所述全细胞催化生产胆红素的方法,其特征在于,所述催化的反应条件为:温度为25℃。
CN202210568351.7A 2022-05-20 2022-05-20 重组菌株及其全细胞催化生产胆红素的方法 Active CN114891707B (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210568351.7A CN114891707B (zh) 2022-05-20 2022-05-20 重组菌株及其全细胞催化生产胆红素的方法

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210568351.7A CN114891707B (zh) 2022-05-20 2022-05-20 重组菌株及其全细胞催化生产胆红素的方法

Publications (2)

Publication Number Publication Date
CN114891707A true CN114891707A (zh) 2022-08-12
CN114891707B CN114891707B (zh) 2024-04-05

Family

ID=82723693

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202210568351.7A Active CN114891707B (zh) 2022-05-20 2022-05-20 重组菌株及其全细胞催化生产胆红素的方法

Country Status (1)

Country Link
CN (1) CN114891707B (zh)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114703109A (zh) * 2022-05-10 2022-07-05 山东中医药大学 一种耐受牛胆汁的牛黄转化菌筛选培养基、配制方法及应用

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050119205A1 (en) * 2001-12-21 2005-06-02 Maines Mahin D. Methods of modulating heme oxygenase-1 expression and treating heme oxygenase-1 mediated conditions
CN103114110A (zh) * 2012-10-17 2013-05-22 邦泰生物工程(深圳)有限公司 利用固定化酶合成胆红素的方法
CN106978379A (zh) * 2016-01-15 2017-07-25 中国科学院天津工业生物技术研究所 一种产异丁醇和乙醇的大肠杆菌及其制备方法
CN110643555A (zh) * 2019-08-14 2020-01-03 浙江大学 一种基因工程菌及其构建方法及其在生产尼龙12单体12-氨基月桂酸中的应用
CN110684789A (zh) * 2019-10-24 2020-01-14 南京林业大学 融合基因、重组载体及其制备方法、镉离子全细胞生物传感器及其制备方法与应用
CN112057470A (zh) * 2014-09-29 2020-12-11 弗莱德哈钦森癌症研究中心 使用应激蛋白质诱导剂诱导获得性细胞抗性的组合物、试剂盒及方法

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050119205A1 (en) * 2001-12-21 2005-06-02 Maines Mahin D. Methods of modulating heme oxygenase-1 expression and treating heme oxygenase-1 mediated conditions
CN103114110A (zh) * 2012-10-17 2013-05-22 邦泰生物工程(深圳)有限公司 利用固定化酶合成胆红素的方法
CN112057470A (zh) * 2014-09-29 2020-12-11 弗莱德哈钦森癌症研究中心 使用应激蛋白质诱导剂诱导获得性细胞抗性的组合物、试剂盒及方法
CN106978379A (zh) * 2016-01-15 2017-07-25 中国科学院天津工业生物技术研究所 一种产异丁醇和乙醇的大肠杆菌及其制备方法
CN110643555A (zh) * 2019-08-14 2020-01-03 浙江大学 一种基因工程菌及其构建方法及其在生产尼龙12单体12-氨基月桂酸中的应用
CN110684789A (zh) * 2019-10-24 2020-01-14 南京林业大学 融合基因、重组载体及其制备方法、镉离子全细胞生物传感器及其制备方法与应用

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114703109A (zh) * 2022-05-10 2022-07-05 山东中医药大学 一种耐受牛胆汁的牛黄转化菌筛选培养基、配制方法及应用
CN114703109B (zh) * 2022-05-10 2023-09-01 山东中医药大学 一种耐受牛胆汁的牛黄转化菌筛选培养基、配制方法及应用

Also Published As

Publication number Publication date
CN114891707B (zh) 2024-04-05

Similar Documents

Publication Publication Date Title
US10865404B1 (en) Aspartase mutant, recombinant expression vector and recombinant bacterium containing aspartase mutant, and use thereof
CN111607623B (zh) 一种代谢工程改造大肠杆菌制备α-酮异戊酸的方法
CN105331642B (zh) 一种利用L-谷氨酸氧化酶催化生产α-酮戊二酸的方法
CN109266595B (zh) 一种转化l-苏氨酸生产l-2-氨基丁酸的重组菌的构建及应用
CN112143764B (zh) 一种生物酶催化制备布瓦西坦中间体化合物的方法
CN112662637B (zh) 一种甲酸脱氢酶突变体及其制备方法和应用
CN113151230A (zh) 一种甲醛裂合酶的突变体蛋白及其应用
CN114134134B (zh) L-苏氨酸醛缩酶突变体及其在合成L-syn-对甲砜基苯丝氨酸中的应用
CN114891707B (zh) 重组菌株及其全细胞催化生产胆红素的方法
CN113355367B (zh) 酮酸还原酶在合成手性芳香2-羟酸中的应用
CN111454918B (zh) 一种烯醇还原酶突变体及其在制备(r)-香茅醛中的应用
CN105602913B (zh) 重组羰基还原酶突变体ReCR-Mut、编码基因、工程菌及应用
CN114940964B (zh) 工程菌及其高效催化cdca生产udca的方法
CN116814572A (zh) 一种羰基还原酶及其突变体及其在制备手性(r)-8-氯-6-羟基辛酸乙酯中的应用
CN114908129B (zh) 用于制备(r)-4-氯-3-羟基丁酸乙酯的脱氢酶
CN114934061A (zh) 工程菌及其在全细胞催化酮基泛解酸内酯生产d-泛解酸内酯中的应用
CN109370969B (zh) 一种重组克雷伯氏杆菌在制备1,3-丙二醇中的应用
CN107287256A (zh) 全细胞催化合成l-2-哌啶甲酸的方法
CN114958894B (zh) 一种基于CcmK2纤维状蛋白的亚精胺合成多酶复合体的构建方法及其应用
CN110004119B (zh) ε-酮酯还原酶突变体及其催化合成(R)-α-硫辛酸前体的应用
CN114196642B (zh) 谷氨酸脱氢酶变体及其在制备l-氨基酸中的应用
CN113817761B (zh) 一种无三羧酸循环的大肠杆菌底盘菌及其构建方法与应用
CN114150009B (zh) 用于制备麻黄碱的工程菌的构建及麻黄碱的制备方法
CN112481229B (zh) 一种ω转氨酶及其突变体、重组质粒、基因工程菌及其应用
CN108588043B (zh) 一种单加氧酶复合体及其在手性亚砜合成中的应用

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