Article(id=1241356321769968237, tenantId=1146029695717560320, journalId=1192105938417971205, issueId=1241356311292605058, articleNumber=null, orderNo=null, doi=10.13343/j.cnki.wsxb.20230639, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=research-article, receivedDate=1697644800000, receivedDateStr=2023-10-19, revisedDate=null, revisedDateStr=null, acceptedDate=1705593600000, acceptedDateStr=2024-01-19, onlineDate=1773892010394, onlineDateStr=2026-03-19, pubDate=1712160000000, pubDateStr=2024-04-04, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1773892010394, onlineIssueDateStr=2026-03-19, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1773892010394, creator=13701087609, updateTime=1773892010394, updator=13701087609, issue=Issue{id=1241356311292605058, tenantId=1146029695717560320, journalId=1192105938417971205, year='2024', volume='64', issue='4', pageStart='981', pageEnd='1321', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=0, createTime=1773892007897, creator=13701087609, updateTime=1773892637358, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1241358951523087136, tenantId=1146029695717560320, journalId=1192105938417971205, issueId=1241356311292605058, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1241358951523087137, tenantId=1146029695717560320, journalId=1192105938417971205, issueId=1241356311292605058, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=1162, endPage=1174, ext={EN=ArticleExt(id=1241356322130678407, articleId=1241356321769968237, tenantId=1146029695717560320, journalId=1192105938417971205, language=EN, title=Overexpression and functional characterization of ACS
MU and PhaC
MU from
Massilia sp. UMI-21, columnId=1241045257748533520, journalTitle=Acta Microbiologica Sinica, columnName=Research Articles, runingTitle=null, highlight=null, articleAbstract=
[Objective] To obtain the proteins of acetyl-CoA synthase (ACSMU) and PHA synthase (PhaCMU) fromMassilia sp. UMI-21 by structuring anin vitro recombinant expression system, and to elucidate their roles in the biosynthesis of polyhydroxybutyrate (PHB) using the one-phase reaction system (OPRS). [Methods] Seamless cloning was employed to ligate the acetyl-CoA synthase geneacsMU and the PHA synthase genephaCMU amplified fromMassilia sp. UMI-21 to the pQE-80L plasmid to construct the recombinant plasmids. The recombinant plasmids were transformed intoEscherichia coli BL21(DE3), and the recombinant strains were obtained. ACSMU and PhaCMU were purified using a 6×His tag, and their activities were determined by the 5, 5′-dithiobis-(2-nitrobenzoic acid) (DTNB) method. With 3HB as a substrate, the one-phase reaction system (OPRS) was employed to validate the functions of ACSMU and PhaCMU in the biosynthesis of PHB. [Results] The recombinant strains BL21-pQE-80L-acsMU and BL21-pQE-80L-phaCMU were successfully engineered, with the ACSMU and PhaCMU yields of 24.8 mg/L and 25.6 mg/L, respectively. The specific activity of ACSMU was (0.148±0.011) U/mg, and that of PhaCMU for (R)-3HBCoA was (0.102±0.011) U/mg. Nuclear magnetic resonance hydrogen spectroscopy (1H-NMR) results showed that products from the all three PHB synthesis pathways, ACSPt-PCTCP-PhaCRe, ACSMU-PCTCP-PhaCRe, and ACSMU-PCTCP-PhaCMU, in OPRS were PHB. The yields of PHBvia the three pathways were 0.62, 0.76, and 0.64 g/L, respectively. [Conclusion] The genesacsMU andphaCMU can be overexpressed in theE.coli expression system to yield active soluble proteins. Compared with the ACSPt-PCTCP-PhaCRe pathway, substitution of ACSPt with ACSMU increased the PHB yield by 22.58%. The yield of PHB was contingent upon the stability of acetyl-CoA synthase (ACS), which provided acetyl-CoA for reaction under identical PhaC. Replacing PhaCRe with PhaCMU decreased the PHB yield by 15.79% compared with ACSMU-PCTCP-PhaCRe. The polymerase PhaC plays a crucial role in PHB synthesis under identical precursor concentrations.
, correspAuthors=Xuerong HAN, authorNote=null, correspAuthorsNote=
, copyrightStatement=Copyright ©2024 Acta Microbiologica Sinica. All rights reserved., copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=null, magXml=null, pdfUrl=null, pdf=null, pdfFileSize=null, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=null, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=null, mapNumber=null, authorCompany=null, fund=null, authors=null, authorsList=Ming WANG, Xue LI, Xuerong HAN), CN=ArticleExt(id=1241356325314155259, articleId=1241356321769968237, tenantId=1146029695717560320, journalId=1192105938417971205, language=CN, title=来源于马赛菌(
Massilia sp.) UMI-21的ACS
MU和PhaC
MU体外表达及功能研究, columnId=1192149544164012138, journalTitle=微生物学报, columnName=研究报告, runingTitle=null, highlight=null, articleAbstract=
【目的】构建马赛菌(Massilia sp.) UMI-21来源乙酰辅酶A合成酶ACSMU和聚羟基脂肪酸酯(polyhydroxyalkanoate, PHA)合酶PhaCMU的体外重组表达体系并过表达2种酶,利用体外合成体系确定2种酶在Massilia sp. UMI21聚3-羟基丁酸(polyhydroxybutyrate, PHB)合成途径中的主要功能。【方法】利用无缝克隆技术将来源于Massilia sp. UMI-21的乙酰辅酶A合成酶基因acsMU和PHA合酶基因phaCMU扩增后与pQE-80L质粒连接,转导大肠杆菌(Escherichia coli) BL21(DE3)构建2个基因的重组表达体系;利用6×His标签纯化蛋白ACSMU和PhaCMU,并采用5, 5′-二硫双(2-硝基苯甲酸) [5, 5′-dithiobis-(2-nitrobenzoic acid), DTNB]法测定其活性;使用体外单相合成系统(one-phase reaction system, OPRS),以(R)-3HB为底物,验证ACSMU和PhaCMU这2种酶在合成PHB途径中的功能。【结果】成功构建了ACSMU和PhaCMU蛋白重组表达菌株BL21-pQE-80L-acsMU和BL21-pQE-80L-phaCMU,提纯得到过表达蛋白ACSMU和PhaCMU产率分别为24.8 mg/L和25.6 mg/L;ACSMU酶比活力为(0.148±0.011) U/mg。PhaCMU酶对(R)-3HBCoA的比活力为(0.102±0.011) U/mg;核磁共振氢谱(nuclear magnetic resonance hydrogen spectroscopy,1H-NMR)分析结果表明,使用ACSPt-PCTCP-PhaCRe、ACSMU-PCTCP-PhaCRe和ACSMU-PCTCP-PhaCMU这3条OPRS途径均能合成PHB,产量分别为0.62、0.76和0.64 g/L。【结论】acsMU和phaCMU基因可利用大肠杆菌表达体系过表达并可获得具有活性的可溶性蛋白;对比ACSPt-PCTCP-PhaCRe合成体系,ACSMU替代ACSPt合成PHB产量增加22.58%,在聚合酶相同的情况下,PHB的合成产量依赖乙酰辅酶A合成酶(acetyl-CoA synthase, ACS)合成乙酰辅酶A的稳定性。使用PhaCMU代替PhaCRe,对比ACSMU-PCTCP-PhaCRe组合,合成PHB产量减少了15.79%。在聚合前体浓度相同的情况下,PHB合成量依赖聚合酶的活性。
, correspAuthors=韩雪容, authorNote=null, correspAuthorsNote=null, copyrightStatement=版权所有©《微生物学报》编辑部2024, copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=Q628r0fJPzwNRv/j6ppZ9g==, magXml=RhhF/Q237jCd6sTAJq8kJA==, pdfUrl=null, pdf=1fKLihT1z8HGYNFgYvyh3w==, pdfFileSize=682841, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=6qxoAlbuMbYVzWJTxb9X+g==, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=JPMPDRSfuKO3uEfYY1Y58Q==, mapNumber=null, authorCompany=null, fund=null, authors=null, authorsList=王明, 李雪, 韩雪容)}, authors=[Author(id=1241444630546411707, tenantId=1146029695717560320, journalId=1192105938417971205, articleId=1241356321769968237, orderNo=0, firstName=null, middleName=null, lastName=null, nameCn=null, orcid=null, stid=null, country=null, authorPic=null, dead=0, email=null, emailSecond=null, emailThird=null, correspondingAuthor=0, authorType=1, ext={EN=AuthorExt(id=1241444630676435143, tenantId=1146029695717560320, journalId=1192105938417971205, articleId=1241356321769968237, authorId=1241444630546411707, language=EN, stringName=Ming WANG, firstName=Ming, middleName=null, lastName=WANG, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
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Bacillus megaterium, refAbstract=null)], funds=[Fund(id=1241444637722866132, tenantId=1146029695717560320, journalId=1192105938417971205, articleId=1241356321769968237, awardId=31971252, language=EN, fundingSource=National Natural Science Foundation of China(31971252), fundOrder=null, country=null), Fund(id=1241444637831918038, tenantId=1146029695717560320, journalId=1192105938417971205, articleId=1241356321769968237, awardId=31971252, language=CN, fundingSource=国家自然科学基金(31971252), fundOrder=null, country=null)], companyList=[AuthorCompany(id=1241444630273781922, tenantId=1146029695717560320, journalId=1192105938417971205, articleId=1241356321769968237, xref=null, ext=[AuthorCompanyExt(id=1241444630282170531, tenantId=1146029695717560320, journalId=1192105938417971205, articleId=1241356321769968237, companyId=1241444630273781922, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=1 Jilin Province Key Laboratory of Fungal Phenomics, Jilin Agricultural University, Changchun 130118, Jilin, China), AuthorCompanyExt(id=1241444630294753445, tenantId=1146029695717560320, journalId=1192105938417971205, articleId=1241356321769968237, companyId=1241444630273781922, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=1 吉林农业大学 吉林省菌物表型组学重点实验室, 吉林 长春 130118)]), AuthorCompany(id=1241444630412193970, tenantId=1146029695717560320, journalId=1192105938417971205, articleId=1241356321769968237, xref=null, ext=[AuthorCompanyExt(id=1241444630424776882, tenantId=1146029695717560320, journalId=1192105938417971205, articleId=1241356321769968237, companyId=1241444630412193970, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=2 School of Life Science and Technology, Changchun University of Science and Technology, Changchun 130022, Jilin, China), AuthorCompanyExt(id=1241444630437359796, tenantId=1146029695717560320, journalId=1192105938417971205, articleId=1241356321769968237, companyId=1241444630412193970, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=2 长春理工大学生命科学技术学院, 吉林 长春 130022)])], figs=[ArticleFig(id=1241444634388394345, tenantId=1146029695717560320, journalId=1192105938417971205, articleId=1241356321769968237, language=EN, label=Figure 1, caption=
PCR electrophoresis results of genesacsMU andphaCMU. A:acsMU PCR result. M: DL2000 DNA marker; Lane 1: GeneacsMU. B:phaCMU PCR results. M: DNA marker Q; Lane 1 and 2: GenephaCMU., figureFileSmall=Bc1AhomVQAtY1QqiXW7+tA==, figureFileBig=qSm2WxVMw3xfAule4JkWWA==, tableContent=null), ArticleFig(id=1241444634489057646, tenantId=1146029695717560320, journalId=1192105938417971205, articleId=1241356321769968237, language=CN, label=图1, caption=
目的基因acsMU和phaCMU的PCR电泳结果图, figureFileSmall=Bc1AhomVQAtY1QqiXW7+tA==, figureFileBig=qSm2WxVMw3xfAule4JkWWA==, tableContent=null), ArticleFig(id=1241444634690384250, tenantId=1146029695717560320, journalId=1192105938417971205, articleId=1241356321769968237, language=EN, label=Figure 2, caption=
Identification of pQE-80L-acsMU and pQE-80L-phaCMU. A: Identification of pQE-80L-acsMU. M: DL15000 DNA marker; Lane 1: pQE-80L single digestion; Lane 2: pQE-80L-acsMU single digestion. B: Identification of pQE-80L-phaCMU. M: DNA marker Q; Lane 1−3:phaCMU PCR validation., figureFileSmall=9pHHXuC7MmgwBCdOM0ZKvA==, figureFileBig=wzi2/C/M12LZqP8hkksuiA==, tableContent=null), ArticleFig(id=1241444634832990596, tenantId=1146029695717560320, journalId=1192105938417971205, articleId=1241356321769968237, language=CN, label=图2, caption=
pQE-80L-acsMU和pQE-80L-phaCMU鉴定电泳图, figureFileSmall=9pHHXuC7MmgwBCdOM0ZKvA==, figureFileBig=wzi2/C/M12LZqP8hkksuiA==, tableContent=null), ArticleFig(id=1241444634954625419, tenantId=1146029695717560320, journalId=1192105938417971205, articleId=1241356321769968237, language=EN, label=Figure 3, caption=
Electrophoresis results of optimized expression conditions for ACSMU and PhaCMU. A: ACSMU induced expression. M: Protein marker; Lane 1: Supernatant protein without inducer addition; Lane 2: Precipitated protein without added inducer; Lane 3: Supernatant protein with inducer addition; Lane 4: Precipitated protein with added inducer. B: ACSMU expression temperature optimization. M: Protein marker; Lane 1: 37 ℃; Lane 2: 30 ℃; Lane 3: 20 ℃; Lane 4: 15 ℃. C: ACSMU expression inducer concentration optimization. M: Protein marker; Lane 1: 0.2 mmol/L; Lane 2: 0.5 mmol/L; Lane 3: 0.8 mmol/L. D: PhaCMU induced expression. M: Protein marker; Lane 1: Total enzyme solution; Lane 2: Supernatant protein., figureFileSmall=yB0f+OlkOJAD/p/2OYISvw==, figureFileBig=cISsFyWq7f8NhJn651q6Jg==, tableContent=null), ArticleFig(id=1241444635093037456, tenantId=1146029695717560320, journalId=1192105938417971205, articleId=1241356321769968237, language=CN, label=图3, caption=
ACSMU和PhaCMU的表达条件优化电泳结果, figureFileSmall=yB0f+OlkOJAD/p/2OYISvw==, figureFileBig=cISsFyWq7f8NhJn651q6Jg==, tableContent=null), ArticleFig(id=1241444635265003928, tenantId=1146029695717560320, journalId=1192105938417971205, articleId=1241356321769968237, language=EN, label=Figure 4, caption=
Electrophoresis of purification PHA synthesis-related enzymes. A: ACSMU purification result. M: Protein marker; Lane 1: ACSMU. B: ACSPt purification result. M: Protein marker; Lane 1: ACSPt. C: PCTCp purification result. M: Protein marker; Lane 1: PCTCp. D: PhaCRe purification result. M: Protein marker; Lane 1: PhaCRe. E: PhaCMU purification result. M: Protein marker; Lane 1: PhaCMU., figureFileSmall=WxAewv1qfh9ZWr2Ogi1XMQ==, figureFileBig=EdfLzBsah71GWODG7k5YuA==, tableContent=null), ArticleFig(id=1241444635390833059, tenantId=1146029695717560320, journalId=1192105938417971205, articleId=1241356321769968237, language=CN, label=图4, caption=
PHA合成相关酶的纯化电泳图, figureFileSmall=WxAewv1qfh9ZWr2Ogi1XMQ==, figureFileBig=EdfLzBsah71GWODG7k5YuA==, tableContent=null), ArticleFig(id=1241444635491496359, tenantId=1146029695717560320, journalId=1192105938417971205, articleId=1241356321769968237, language=EN, label=Figure 5, caption=
1H-NMR results ofin vitro synthesis products. A:1H-NMR results of PHB synthesized by ACSPt-PCTCp-PhaCRe. B:1H-NMR results of PHB synthesized by ACSMU-PCTCp-PhaCRe. C:1H-NMR results of PHB synthesis by ACSMU-PCTCp-PhaCMU., figureFileSmall=41ff5hfUmr3aGDbUw+xhsg==, figureFileBig=yIUZcJHTgQzr2ZojPmf9Ig==, tableContent=null), ArticleFig(id=1241444635608936876, tenantId=1146029695717560320, journalId=1192105938417971205, articleId=1241356321769968237, language=CN, label=图5, caption=
体外合成产物的1H-NMR结果, figureFileSmall=41ff5hfUmr3aGDbUw+xhsg==, figureFileBig=yIUZcJHTgQzr2ZojPmf9Ig==, tableContent=null), ArticleFig(id=1241444637131469232, tenantId=1146029695717560320, journalId=1192105938417971205, articleId=1241356321769968237, language=EN, label=Table 1, caption=
Yields and enzyme specific activities of PHB synthesis-related enzymes
, figureFileSmall=null, figureFileBig=null, tableContent=
| Proteins | Concentration (mg/mL) | Yield (mg/L) | Specific activity (U/mg) |
| ACSMU | 6.2 | 24.8 | 0.148±0.011 |
| ACSPt | 14.0 | 70.0 | 0.289±0.015 |
| PCTCp | 12.0 | 70.0 | 0.389±0.026 |
| PhaCRe | 16.0 | 88.0 | 0.246±0.017 |
| PhaCMU | 6.4 | 25.6 | 0.102±0.011 |
), ArticleFig(id=1241444637244715449, tenantId=1146029695717560320, journalId=1192105938417971205, articleId=1241356321769968237, language=CN, label=表1, caption=
PHB合成相关酶产量及酶比活力
, figureFileSmall=null, figureFileBig=null, tableContent=
| Proteins | Concentration (mg/mL) | Yield (mg/L) | Specific activity (U/mg) |
| ACSMU | 6.2 | 24.8 | 0.148±0.011 |
| ACSPt | 14.0 | 70.0 | 0.289±0.015 |
| PCTCp | 12.0 | 70.0 | 0.389±0.026 |
| PhaCRe | 16.0 | 88.0 | 0.246±0.017 |
| PhaCMU | 6.4 | 25.6 | 0.102±0.011 |
), ArticleFig(id=1241444637387321794, tenantId=1146029695717560320, journalId=1192105938417971205, articleId=1241356321769968237, language=EN, label=Table 2, caption=
Extraction results of products of PHB byin vitro OPRS
, figureFileSmall=null, figureFileBig=null, tableContent=
| Enzymes in PHB synthetic pathways | Dry weight of product (mg) | Yield (g/L) |
| ACSPt, PCTCp, PhaCRe | 3.10 | 0.62 |
| ACSMU, PCTCp, PhaCRe | 3.80 | 0.76 |
| ACSMU, PCTCp, PhaCMU | 3.20 | 0.64 |
), ArticleFig(id=1241444637496373704, tenantId=1146029695717560320, journalId=1192105938417971205, articleId=1241356321769968237, language=CN, label=表2, caption=
PHB的体外合成产物提取结果
, figureFileSmall=null, figureFileBig=null, tableContent=
| Enzymes in PHB synthetic pathways | Dry weight of product (mg) | Yield (g/L) |
| ACSPt, PCTCp, PhaCRe | 3.10 | 0.62 |
| ACSMU, PCTCp, PhaCRe | 3.80 | 0.76 |
| ACSMU, PCTCp, PhaCMU | 3.20 | 0.64 |
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