Article(id=1320886792472088630, tenantId=1146029695717560320, journalId=1260987677001138203, issueId=1320883859747615068, articleNumber=null, orderNo=null, doi=10.13386/j.issn1002-0306.2025030093, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1741536000000, receivedDateStr=2025-03-10, revisedDate=null, revisedDateStr=null, acceptedDate=null, acceptedDateStr=null, onlineDate=1792853552214, onlineDateStr=2026-10-24, pubDate=1773504000000, pubDateStr=2026-03-15, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1792853552214, onlineIssueDateStr=2026-10-24, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1792853552214, creator=13701087609, updateTime=1792853552214, updator=13701087609, issue=Issue{id=1320883859747615068, tenantId=1146029695717560320, journalId=1260987677001138203, year='2026', volume='47', issue='6', pageStart='1', pageEnd='505', issueExtLink='null', onlineDate='null', pubDate='1773504000000', pubDateStr='2026-03-15', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1792852852999, creator='13701087609', updateTime=1792852852999, updator='13701087609', preIssue=null, nextIssue=null, articleTotal=null, ext=null, issueFiles=null, downloadFileDto=null}, startPage=160, endPage=170, ext={EN=ArticleExt(id=1320886792673415224, articleId=1320886792472088630, tenantId=1146029695717560320, journalId=1260987677001138203, language=EN, title=Effect of Side-chain Groups in Monocyclic Aryl-glucoside Substrate on the Activity of
Aspergillus niger β-Glucosidase, columnId=1261336275769016441, journalTitle=Science and Technology of Food Industry, columnName=Bioengineering, runingTitle=null, highlight=null, articleAbstract=
β-Glucosidase can hydrolyze aryl-glucoside and holds significant application value in the fields of food and biotransformation. To investigate the influence of substrate side-chain groups on the activity of β-glucosidase, the β-D-Glu from Aspergillus niger was cloned and expressed. Through in silico saturation mutagenesis followed by experimental validation, key amino acid was identified within 4 Å of the β-D-Glu binding pocket, molecular docking and molecular dynamics simulations were employed to analyze the structure-activity relationship between the enzyme and substrate. β-D-Glu exhibited significant differences in activity toward structurally similar monocyclic aryl-glycoside substrates with varying side chains. Specifically, the enzymatic activities toward salicin, arbutin, and pNPG were measured at 44.72, 103.97, and 839.02 IU/mL, respectively. Through in silico saturation mutagenesis followed by experimental validation, residue R98 was identified as a key amino acid within 4 Å of the β-D-Glu binding pocket. Mutation at this site exerted substrate-specific effects on catalytic activity towards different substrates. Compared to wild-type enzyme, R98F mutation increased the relative activity towards salicin to 266.08%, while R98I and R98Q mutations decreased the relative activities to 37.62% and 35.05%, respectively. All three mutants showed decreased relative activities towards arbutin, but the relative activities towards pNPG remained almost unchanged. Specifically, the R98F mutant exhibited significantly enhanced activity towards salicin, while its activity towards arbutin and pNPG decreased by 16.44% and 7.54%, respectively. Molecular docking and molecular dynamics simulations revealed that differences in the polarity and electron-donating capacity of the side-chain groups in monocyclic aryl-glucoside substrates lead to distinct binding modes with the enzyme. The R98F mutation modulates both the conformational flexibility at the binding pocket entrance and the binding affinity between catalytic key residues and substrates. It is speculated that the mutation specifically enhances the hydrolytic activity toward salicin by improving both glycosidic bond cleavage efficiency and reaction rate. The results of this study help to reveal the hydrolysis characteristics of β-glucosidase towards different aryl-glucoside substrates and provide a scientific basis for the design and modification of this enzyme.
, authors=Ruilin HUANG
1, Cheng PENG
1, Yiling TANG
1, Hui NI
1, 2, 3, 4, Lijun LI
1, 2, 3, *, authorsList=Ruilin HUANG, Cheng PENG, Yiling TANG, Hui NI, Lijun LI, authorCompany=null, correspAuthors=Lijun LI, authorNote=null, correspAuthorsNote=null, copyrightStatement=Copyright © 2026 Science and Technology of Food Industry. 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, fund=null), CN=ArticleExt(id=1320886795840114763, articleId=1320886792472088630, tenantId=1146029695717560320, journalId=1260987677001138203, language=CN, title=单环芳基葡萄糖苷类底物侧链基团对黑曲霉
β-葡萄糖苷酶活性的影响, columnId=1261336277547401341, journalTitle=食品工业科技, columnName=生物工程, runingTitle=null, highlight=null, articleAbstract=
β-葡萄糖苷酶能水解芳基葡萄糖苷,在食品和生物转化领域具有重要应用价值。为了探究底物侧链基团对β-葡萄糖苷酶活性的影响,克隆表达了黑曲霉β-葡萄糖苷酶(β-D-Glu)。通过虚拟饱和突变结合实验验证,在β-D-Glu结合口袋4 Å范围内鉴定出关键氨基酸,利用分子对接和分子动力学模拟分析酶与底物的构效关系。β-D-Glu对结构相似但侧链不同的单环芳基葡萄糖苷底物存在显著差异,对水杨苷、熊果苷和pNPG的酶活分别为44.72、103.97和839.02 IU/mL。关键氨基酸残基R98突变对不同底物的催化活性呈现特异性影响:R98F突变使水杨苷活性提升至原始酶的266.08%,而R98I和R98Q则分别降低至37.62%和35.05%;3个突变体对熊果苷的活性均有所下降,但对pNPG的活性则基本保持不变。其中,R98F突变体对水杨苷的催化活性显著提高,同时对熊果苷和pNPG的活性分别降低16.44%和7.54%。分子对接和分子动力学模拟结果表明,单环芳基葡萄糖苷类底物侧链基团的极性和给电子能力差异使底物与酶结合模式不同;R98F改变了结合口袋入口处构象柔性及催化关键氨基酸与底物的结合强度,推测突变通过提高对水杨苷糖苷键的断键能力和水解反应速度,从而特异性提高了其水解活性。本研究结果有助于揭示β-葡萄糖苷酶对不同芳基葡萄糖苷类底物的水解特征,为该酶设计改造提供科学依据。
, authors=黄瑞琳
1, 彭程
1, 唐艺玲
1, 倪辉
1, 2, 3, 4, 李利君
1, 2, 3, *, authorsList=黄瑞琳, 彭程, 唐艺玲, 倪辉, 李利君, authorCompany=null, correspAuthors=李利君, authorNote=
, correspAuthorsNote=
, copyrightStatement=版权所有 © 2026《食品工业科技》编辑部, copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=/40nLc6Xq8sGcxXE4Sj6Gw==, magXml=Zx5YDCtl2ZSip7+x2uYrZQ==, pdfUrl=null, pdf=3eAj3UOTz27cA4UvtShw2g==, pdfFileSize=10473256, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=6dIHYC/sC2F+pU8dOcKPEw==, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=KYLerWzpC4ryuZt/Q/jyPw==, mapNumber=null, fund=null)}, authors=[Author(id=1320886796356014169, tenantId=1146029695717560320, journalId=1260987677001138203, articleId=1320886792472088630, orderNo=0, firstName=null, middleName=null, lastName=null, nameCn=null, orcid=null, stid=null, country=null, authorPic=null, dead=0, email=Huangruilin5@163.com, emailSecond=null, emailThird=null, correspondingAuthor=0, authorType=1, ext={EN=AuthorExt(id=1320886796435705947, tenantId=1146029695717560320, journalId=1260987677001138203, articleId=1320886792472088630, authorId=1320886796356014169, language=EN, stringName=Ruilin HUANG, firstName=Ruilin, middleName=null, lastName=HUANG, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
1, address=
1College of Ocean Food and Biological Engineering, Jimei University, Xiamen 361021, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1320886796519592028, tenantId=1146029695717560320, journalId=1260987677001138203, articleId=1320886792472088630, authorId=1320886796356014169, language=CN, stringName=黄瑞琳, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
1, address=
1集美大学海洋食品与生物工程学院,福建厦门 361021, bio={"content":"
黄瑞琳(1999−),女,硕士研究生,研究方向:食品科学,E-mail:Huangruilin5@163.com
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黄瑞琳(1999−),女,硕士研究生,研究方向:食品科学,E-mail:Huangruilin5@163.com
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1集美大学海洋食品与生物工程学院,福建厦门 361021)])]), Author(id=1320886796599283806, tenantId=1146029695717560320, journalId=1260987677001138203, articleId=1320886792472088630, orderNo=1, 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=1320886796674781280, tenantId=1146029695717560320, journalId=1260987677001138203, articleId=1320886792472088630, authorId=1320886796599283806, language=EN, stringName=Cheng PENG, firstName=Cheng, middleName=null, lastName=PENG, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
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1集美大学海洋食品与生物工程学院,福建厦门 361021, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null)}, companyList=[AuthorCompany(id=1320886796045635660, tenantId=1146029695717560320, journalId=1260987677001138203, articleId=1320886792472088630, xref=1, ext=[AuthorCompanyExt(id=1320886796054024269, tenantId=1146029695717560320, journalId=1260987677001138203, articleId=1320886792472088630, companyId=1320886796045635660, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
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1集美大学海洋食品与生物工程学院,福建厦门 361021)])]), Author(id=1320886796813193315, tenantId=1146029695717560320, journalId=1260987677001138203, articleId=1320886792472088630, orderNo=2, 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=1320886796880302181, tenantId=1146029695717560320, journalId=1260987677001138203, articleId=1320886792472088630, authorId=1320886796813193315, language=EN, stringName=Yiling TANG, firstName=Yiling, middleName=null, lastName=TANG, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
1, address=
1College of Ocean Food and Biological Engineering, Jimei University, Xiamen 361021, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1320886796943216742, tenantId=1146029695717560320, journalId=1260987677001138203, articleId=1320886792472088630, authorId=1320886796813193315, language=CN, stringName=唐艺玲, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
1, address=
1集美大学海洋食品与生物工程学院,福建厦门 361021, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null)}, companyList=[AuthorCompany(id=1320886796045635660, tenantId=1146029695717560320, journalId=1260987677001138203, articleId=1320886792472088630, xref=1, ext=[AuthorCompanyExt(id=1320886796054024269, tenantId=1146029695717560320, journalId=1260987677001138203, articleId=1320886792472088630, companyId=1320886796045635660, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
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1集美大学海洋食品与生物工程学院,福建厦门 361021)])]), Author(id=1320886797039685736, tenantId=1146029695717560320, journalId=1260987677001138203, articleId=1320886792472088630, orderNo=3, 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=1320886797119377517, tenantId=1146029695717560320, journalId=1260987677001138203, articleId=1320886792472088630, authorId=1320886797039685736, language=EN, stringName=Hui NI, firstName=Hui, middleName=null, lastName=NI, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
1, 2, 3, 4, address=
1College of Ocean Food and Biological Engineering, Jimei University, Xiamen 361021, China
2Fujian Provincial Key Laboratory of Food Microbiology and Enzyme Engineering, Xiamen 361021, China
3Research Center of Food Biotechnology of Xiamen City, Xiamen 361021, China
4School of Marine Biology, Xiamen Ocean Vocational College, Xiamen 361021, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1320886797194874990, tenantId=1146029695717560320, journalId=1260987677001138203, articleId=1320886792472088630, authorId=1320886797039685736, language=CN, stringName=倪辉, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
1, 2, 3, 4, address=
1集美大学海洋食品与生物工程学院,福建厦门 361021
2福建省食品微生物与酶工程重点实验室,福建厦门 361021
3厦门市食品生物工程技术研究中心,福建厦门 361021
4厦门海洋职业技术学院海洋生物学院,福建厦门 361021, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null)}, companyList=[AuthorCompany(id=1320886796045635660, tenantId=1146029695717560320, journalId=1260987677001138203, articleId=1320886792472088630, xref=1, ext=[AuthorCompanyExt(id=1320886796054024269, tenantId=1146029695717560320, journalId=1260987677001138203, articleId=1320886792472088630, companyId=1320886796045635660, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
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1集美大学海洋食品与生物工程学院,福建厦门 361021)]), AuthorCompany(id=1320886796116938831, tenantId=1146029695717560320, journalId=1260987677001138203, articleId=1320886792472088630, xref=2, ext=[AuthorCompanyExt(id=1320886796125327440, tenantId=1146029695717560320, journalId=1260987677001138203, articleId=1320886792472088630, companyId=1320886796116938831, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
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2福建省食品微生物与酶工程重点实验室,福建厦门 361021)]), AuthorCompany(id=1320886796196630610, tenantId=1146029695717560320, journalId=1260987677001138203, articleId=1320886792472088630, xref=3, ext=[AuthorCompanyExt(id=1320886796205019219, tenantId=1146029695717560320, journalId=1260987677001138203, articleId=1320886792472088630, companyId=1320886796196630610, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
3Research Center of Food Biotechnology of Xiamen City, Xiamen 361021, China), AuthorCompanyExt(id=1320886796213407828, tenantId=1146029695717560320, journalId=1260987677001138203, articleId=1320886792472088630, companyId=1320886796196630610, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
3厦门市食品生物工程技术研究中心,福建厦门 361021)]), AuthorCompany(id=1320886796272128085, tenantId=1146029695717560320, journalId=1260987677001138203, articleId=1320886792472088630, xref=4, ext=[AuthorCompanyExt(id=1320886796276322390, tenantId=1146029695717560320, journalId=1260987677001138203, articleId=1320886792472088630, companyId=1320886796272128085, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
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4厦门海洋职业技术学院海洋生物学院,福建厦门 361021)])]), Author(id=1320886797261983856, tenantId=1146029695717560320, journalId=1260987677001138203, articleId=1320886792472088630, orderNo=4, firstName=null, middleName=null, lastName=null, nameCn=null, orcid=null, stid=null, country=null, authorPic=null, dead=0, email=ljli@jmu.edu.cn, emailSecond=null, emailThird=null, correspondingAuthor=1, authorType=1, ext={EN=AuthorExt(id=1320886797366841460, tenantId=1146029695717560320, journalId=1260987677001138203, articleId=1320886792472088630, authorId=1320886797261983856, language=EN, stringName=Lijun LI, firstName=Lijun, middleName=null, lastName=LI, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
1, 2, 3, *, address=
1College of Ocean Food and Biological Engineering, Jimei University, Xiamen 361021, China
2Fujian Provincial Key Laboratory of Food Microbiology and Enzyme Engineering, Xiamen 361021, China
3Research Center of Food Biotechnology of Xiamen City, Xiamen 361021, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1320886797454921845, tenantId=1146029695717560320, journalId=1260987677001138203, articleId=1320886792472088630, authorId=1320886797261983856, language=CN, stringName=李利君, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
1, 2, 3, *, address=
1集美大学海洋食品与生物工程学院,福建厦门 361021
2福建省食品微生物与酶工程重点实验室,福建厦门 361021
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β-glucosidase with high substrate specificity for the aryltetralin lignan podophyllotoxin[J]. Biochimica et Biophysica Acta (BBA)-Proteins and Proteomics, 2003, 1646(1): 157−163., articleTitle=null, refAbstract=null)], funds=null, companyList=[AuthorCompany(id=1320886796045635660, tenantId=1146029695717560320, journalId=1260987677001138203, articleId=1320886792472088630, xref=1, ext=[AuthorCompanyExt(id=1320886796054024269, tenantId=1146029695717560320, journalId=1260987677001138203, articleId=1320886792472088630, companyId=1320886796045635660, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
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4厦门海洋职业技术学院海洋生物学院,福建厦门 361021)])], figs=[ArticleFig(id=1320886799870840960, tenantId=1146029695717560320, journalId=1260987677001138203, articleId=1320886792472088630, language=EN, label=Fig.1, caption=
Structures of the monocyclic aryl-glucoside substrates salicin (A), arbutin (B) and pNPG (C), figureFileSmall=33HsSwe8bn53BK28r6lDIA==, figureFileBig=6dIHYC/sC2F+pU8dOcKPEw==, tableContent=null), ArticleFig(id=1320886799967309953, tenantId=1146029695717560320, journalId=1260987677001138203, articleId=1320886792472088630, language=CN, label=图1, caption=
单环芳基葡萄糖苷类底物水杨苷(A)、熊果苷(B)和pNPG(C)的结构图, figureFileSmall=33HsSwe8bn53BK28r6lDIA==, figureFileBig=6dIHYC/sC2F+pU8dOcKPEw==, tableContent=null), ArticleFig(id=1320886800265105538, tenantId=1146029695717560320, journalId=1260987677001138203, articleId=1320886792472088630, language=EN, label=Fig.2, caption=
SDS-PAGE of β-D-Glu, figureFileSmall=IJ8/Z0AeT5F6u7Cw0Zbsaw==, figureFileBig=t2B+zMXTJYihp0kGO3ok8g==, tableContent=null), ArticleFig(id=1320886800332214403, tenantId=1146029695717560320, journalId=1260987677001138203, articleId=1320886792472088630, language=CN, label=图2, caption=
β-D-Glu的 SDS-PAGE注:M为蛋白Marker;1为β-D-Glu。
, figureFileSmall=IJ8/Z0AeT5F6u7Cw0Zbsaw==, figureFileBig=t2B+zMXTJYihp0kGO3ok8g==, tableContent=null), ArticleFig(id=1320886800411906180, tenantId=1146029695717560320, journalId=1260987677001138203, articleId=1320886792472088630, language=EN, label=Fig.3, caption=
Optimal temperature (A), temperature stability (B), optimal pH (C), pH stability (D) for β-D-Glu, figureFileSmall=5BtQENDT7QFQ3f9lfZJuVQ==, figureFileBig=7fwLBffrXvXOR6PIk7wLsw==, tableContent=null), ArticleFig(id=1320886800487403653, tenantId=1146029695717560320, journalId=1260987677001138203, articleId=1320886792472088630, language=CN, label=图3, caption=
β-D-Glu的最适温度(A)、温度稳定性(B)、最适pH(C)、pH稳定性(D), figureFileSmall=5BtQENDT7QFQ3f9lfZJuVQ==, figureFileBig=7fwLBffrXvXOR6PIk7wLsw==, tableContent=null), ArticleFig(id=1320886800567095430, tenantId=1146029695717560320, journalId=1260987677001138203, articleId=1320886792472088630, language=EN, label=Fig.4, caption=
Relative enzyme activity of the 98th mutant of β-D-Glu, figureFileSmall=d4r581zd5k6QAdIQQ+Z+SQ==, figureFileBig=OhzzqL/I2fcInDpgkeEvwg==, tableContent=null), ArticleFig(id=1320886800630009991, tenantId=1146029695717560320, journalId=1260987677001138203, articleId=1320886792472088630, language=CN, label=图4, caption=
β-D-Glu第98位突变体相对酶活注:每个突变体各为一组,相同字母表示组间差异不显著,不同字母表示组间存在显著差异,P<0.05。
, figureFileSmall=d4r581zd5k6QAdIQQ+Z+SQ==, figureFileBig=OhzzqL/I2fcInDpgkeEvwg==, tableContent=null), ArticleFig(id=1320886800701313160, tenantId=1146029695717560320, journalId=1260987677001138203, articleId=1320886792472088630, language=EN, label=Fig.5, caption=
2D diagram of the interaction between β-D-Glu and R98F with salicin, arbutin and pNPG, figureFileSmall=FdX38I+MisJFaDN8YtHCRg==, figureFileBig=n5z3S8oxM/pfVwpl/ewSVw==, tableContent=null), ArticleFig(id=1320886800772616329, tenantId=1146029695717560320, journalId=1260987677001138203, articleId=1320886792472088630, language=CN, label=图5, caption=
β-D-Glu和R98F与水杨苷、熊果苷、pNPG的相互作用2D图注:A、B、C分别为β-D-Glu与水杨苷、熊果苷、pNPG;D、E、F分别为R98F与水杨苷、熊果苷、pNPG;G、H、I分别为R98I与水杨苷、熊果苷、pNPG;J、K、L分别为R98Q与水杨苷、熊果苷、pNPG。深绿色为氢键作用力;绿色为范德华力;浅绿色为C-H键作用力;紫色为Pi-Sigma作用力;洋红色为Pi-Pi Stacked/T-shaped作用力;粉色为Pi-Alkyl作用力;黄色为Pi-Sulfur作用力。
, figureFileSmall=FdX38I+MisJFaDN8YtHCRg==, figureFileBig=n5z3S8oxM/pfVwpl/ewSVw==, tableContent=null), ArticleFig(id=1320886800835530890, tenantId=1146029695717560320, journalId=1260987677001138203, articleId=1320886792472088630, language=EN, label=Fig.6, caption=
RMSD (A) and Rg (B) of β-D-Glu binding to different substrates and RMSD (C) and Rg (D) of R98F binding to different substrates, figureFileSmall=ARKI8EPWyl/qfZ9hsSSkfg==, figureFileBig=I59x9J4sbvcHFs7dNGYLAA==, tableContent=null), ArticleFig(id=1320886800894251147, tenantId=1146029695717560320, journalId=1260987677001138203, articleId=1320886792472088630, language=CN, label=图6, caption=
β-D-Glu与不同底物结合的RMSD值(A)和Rg值(B)和R98F与不同底物结合的RMSD值(C)和Rg值(D), figureFileSmall=ARKI8EPWyl/qfZ9hsSSkfg==, figureFileBig=I59x9J4sbvcHFs7dNGYLAA==, tableContent=null), ArticleFig(id=1320886800978137228, tenantId=1146029695717560320, journalId=1260987677001138203, articleId=1320886792472088630, language=EN, label=Fig.7, caption=
RMSF of β-D-Glu and R98F complexed with salicin (A), arbutin (B) and pNPG (C), figureFileSmall=S5HHrO2GvVlAayFbnFpC7g==, figureFileBig=w62Cgl3DzVCeaWxc3iIrPg==, tableContent=null), ArticleFig(id=1320886801045246093, tenantId=1146029695717560320, journalId=1260987677001138203, articleId=1320886792472088630, language=CN, label=图7, caption=
β-D-Glu和R98F与水杨苷(A)、熊果苷(B)、pNPG(C)复合物的RMSF值注:β-D-Glu复合物体系的RMSF差值是由β-D-Glu复合物体系减去纯蛋白体系得出,R98F复合物体系的RMSF差值是由R98F复合物体系减去β-D-Glu复合物体系得出;TIM桶状结构域(22~356),α/β夹心结构域(385~588),FnIII结构域(654~860);区域a(301~310),区域b(716~723、736~749),区域c(193~216),区域d(510~520),区域e(716~725)。
, figureFileSmall=S5HHrO2GvVlAayFbnFpC7g==, figureFileBig=w62Cgl3DzVCeaWxc3iIrPg==, tableContent=null), ArticleFig(id=1320886801133326478, tenantId=1146029695717560320, journalId=1260987677001138203, articleId=1320886792472088630, language=EN, label=Fig.8, caption=
Stacking diagrams of β-D-Glu and R98F complexed with 3 substrate systems (A, B) and stacking diagrams of salicin, arbutin, and pNPG with β-D-Glu and R98F complex systems and best conformation diagram (C, D, E), figureFileSmall=1CftFf5azWAwlApElGky3Q==, figureFileBig=Cu8nnADnuN4yjylTL+qHjw==, tableContent=null), ArticleFig(id=1320886801217212559, tenantId=1146029695717560320, journalId=1260987677001138203, articleId=1320886792472088630, language=CN, label=图8, caption=
β-D-Glu和R98F与3个底物复合物体系叠合图(A、B)和水杨苷、熊果苷、pNPG分别与β-D-Glu和R98F复合物体系叠合图及最佳构象图(C、D、E)注:底物:紫红色为水杨苷;黄色为熊果苷;橙色为pNPG。作用力:深绿色为氢键作用力;绿色为范德华力;浅绿色为C-H键作用力;洋红色为Pi-Pi Stacked/T-shaped作用力;粉色为Pi-Alkyl作用力;黄色为Pi-Sulfur作用力。
, figureFileSmall=1CftFf5azWAwlApElGky3Q==, figureFileBig=Cu8nnADnuN4yjylTL+qHjw==, tableContent=null), ArticleFig(id=1320886801334653072, tenantId=1146029695717560320, journalId=1260987677001138203, articleId=1320886792472088630, language=EN, label=Table 1, caption=
Relative enzyme activities of β-D-Glu mutants towards 3 substrates (%)
, figureFileSmall=null, figureFileBig=null, tableContent=
| 样品 | 水杨苷 | 熊果苷 | pNPG |
|---|
| β-D-Glu | 100.00 | 100.00 | 100.00 |
| E69W | 125.72±16.03b | 45.14±1.94d | 49.25±6.90d |
| E69Y | 70.10±4.12c | 62.21±2.94b | 57.72±2.44c |
| R98F | 266.08±2.73a | 83.56±3.87a | 92.46±0.41b |
| R98I | 37.62±2.91d | 56.63±1.62c | 110.98±3.86a |
| R98Q | 35.05±2.43d | 63.90±3.28b | 93.54±3.55b |
| D99M | 58.04±5.46c | 0.37±0.67g | 4.88±0.20e |
| D99Y | 48.39±4.77d | 0.14±0.00g | 5.10±0.10e |
| L141K | 37.94±9.21d | 0.72±0.25g | 0.72±0.00e |
| D437W | 72.83±7.50c | 40.25±2.88e | 61.31±3.05c |
| Y511W | 71.70±3.21c | 29.61±0.70f | 49.25±3.45d |
), ArticleFig(id=1320886801418539153, tenantId=1146029695717560320, journalId=1260987677001138203, articleId=1320886792472088630, language=CN, label=表1, caption=
β-D-Glu突变体对3个底物的相对酶活(%)
, figureFileSmall=null, figureFileBig=null, tableContent=
| 样品 | 水杨苷 | 熊果苷 | pNPG |
|---|
| β-D-Glu | 100.00 | 100.00 | 100.00 |
| E69W | 125.72±16.03b | 45.14±1.94d | 49.25±6.90d |
| E69Y | 70.10±4.12c | 62.21±2.94b | 57.72±2.44c |
| R98F | 266.08±2.73a | 83.56±3.87a | 92.46±0.41b |
| R98I | 37.62±2.91d | 56.63±1.62c | 110.98±3.86a |
| R98Q | 35.05±2.43d | 63.90±3.28b | 93.54±3.55b |
| D99M | 58.04±5.46c | 0.37±0.67g | 4.88±0.20e |
| D99Y | 48.39±4.77d | 0.14±0.00g | 5.10±0.10e |
| L141K | 37.94±9.21d | 0.72±0.25g | 0.72±0.00e |
| D437W | 72.83±7.50c | 40.25±2.88e | 61.31±3.05c |
| Y511W | 71.70±3.21c | 29.61±0.70f | 49.25±3.45d |
), ArticleFig(id=1320886801506619538, tenantId=1146029695717560320, journalId=1260987677001138203, articleId=1320886792472088630, language=EN, label=Table 2, caption=
Docking binding energies of β-D-Glu and mutants with different substrates (kcal/mol)
, figureFileSmall=null, figureFileBig=null, tableContent=
| 样品 | 水杨苷 | 熊果苷 | pNPG |
|---|
| β-D-Glu | –6.2 | –6.4 | –6.8 |
| R98F | –6.9 | –6.7 | –7.2 |
| R98I | –7.0 | –7.1 | –7.0 |
| R98Q | –6.7 | –6.7 | –7.0 |
), ArticleFig(id=1320886801573728403, tenantId=1146029695717560320, journalId=1260987677001138203, articleId=1320886792472088630, language=CN, label=表2, caption=
β-D-Glu及突变体与不同底物的对接结合能(kcal/mol)
, figureFileSmall=null, figureFileBig=null, tableContent=
| 样品 | 水杨苷 | 熊果苷 | pNPG |
|---|
| β-D-Glu | –6.2 | –6.4 | –6.8 |
| R98F | –6.9 | –6.7 | –7.2 |
| R98I | –7.0 | –7.1 | –7.0 |
| R98Q | –6.7 | –6.7 | –7.0 |
), ArticleFig(id=1320886801661808788, tenantId=1146029695717560320, journalId=1260987677001138203, articleId=1320886792472088630, language=EN, label=Table 3, caption=
Free energy of binding of β-D-Glu and R98F with different substrate complex system (kJ/mol)
, figureFileSmall=null, figureFileBig=null, tableContent=
结合自由能 贡献项 | β-D-Glu | | R98F |
|---|
| 水杨苷 | 熊果苷 | pNPG | | 水杨苷 | 熊果苷 | pNPG |
|---|
| ∆EvdW | –71.634 | –64.973 | –66.839 | | –55.039 | –60.702 | –66.806 |
| ∆Eelec | –552.960 | –459.769 | –542.581 | | –557.855 | –427.500 | –450.385 |
| ∆EPB | 277.050 | 229.719 | 311.734 | | 215.120 | 196.242 | 221.970 |
| ∆ESASA | –15.145 | –14.413 | –14.879 | | –14.391 | –13.992 | –13.306 |
| ∆Ebind | –362.689 | –309.436 | –312.566 | | –412.166 | –305.952 | –308.526 |
), ArticleFig(id=1320886801745694869, tenantId=1146029695717560320, journalId=1260987677001138203, articleId=1320886792472088630, language=CN, label=表3, caption=
β-D-Glu和R98F与不同底物复合物体系结合自由能(kJ/mol)
, figureFileSmall=null, figureFileBig=null, tableContent=
结合自由能 贡献项 | β-D-Glu | | R98F |
|---|
| 水杨苷 | 熊果苷 | pNPG | | 水杨苷 | 熊果苷 | pNPG |
|---|
| ∆EvdW | –71.634 | –64.973 | –66.839 | | –55.039 | –60.702 | –66.806 |
| ∆Eelec | –552.960 | –459.769 | –542.581 | | –557.855 | –427.500 | –450.385 |
| ∆EPB | 277.050 | 229.719 | 311.734 | | 215.120 | 196.242 | 221.970 |
| ∆ESASA | –15.145 | –14.413 | –14.879 | | –14.391 | –13.992 | –13.306 |
| ∆Ebind | –362.689 | –309.436 | –312.566 | | –412.166 | –305.952 | –308.526 |
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