Article(id=1320166450153771501, tenantId=1146029695717560320, journalId=1260987677001138203, issueId=1320166220377215955, articleNumber=null, orderNo=null, doi=10.13386/j.issn1002-0306.2025100302, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1762099200000, receivedDateStr=2025-11-03, revisedDate=null, revisedDateStr=null, acceptedDate=null, acceptedDateStr=null, onlineDate=1792681809222, onlineDateStr=2026-10-22, pubDate=1780243200000, pubDateStr=2026-06-01, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1792681809222, onlineIssueDateStr=2026-10-22, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1792681809222, creator=13701087609, updateTime=1792681809222, updator=13701087609, issue=Issue{id=1320166220377215955, tenantId=1146029695717560320, journalId=1260987677001138203, year='2026', volume='47', issue='11', pageStart='1', pageEnd='514', issueExtLink='null', onlineDate='null', pubDate='1780243200000', pubDateStr='2026-06-01', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1792681754440, creator='13701087609', updateTime=1792681754440, updator='13701087609', preIssue=null, nextIssue=null, articleTotal=null, ext=null, issueFiles=null, downloadFileDto=null}, startPage=249, endPage=259, ext={EN=ArticleExt(id=1320166450380263918, articleId=1320166450153771501, tenantId=1146029695717560320, journalId=1260987677001138203, language=EN, title=Function and Structure Analysis of Fucosidase PSf1 from the Marine Sulfate-reducing Bacterium
Pontiella sulfatireligans, columnId=1261336275769016441, journalTitle=Science and Technology of Food Industry, columnName=Bioengineering, runingTitle=null, highlight=null, articleAbstract=
Fucosidases play a key role in the biodegradation and functional exploration of fucoidan, yet their catalytic diversity and molecular mechanisms remain unclear. This study aimed to explore novel fucosidases from the marine microorganism Pontiella sulfatireligans, and to analyze their enzymatic characteristics and structural basis. The discovery of glycosidases was conducted through genomic comparison and annotation to identify enzymes involved in fucoidan degradation. The candidate α-L-fucosidase gene, PSf1, was cloned and expressed, and its hydrolytic activity and substrate affinity were measured using p-nitrophenyl fucoside as a substrate. Substrate specificity was assessed through a substrate spectrum analysis. The three-dimensional structure of PSf1 was resolved using X-ray crystallography, and molecular dynamics simulations were performed to analyze its binding mode and stability differences with different substrates. The results showed that when using pNP-Gal as a substrate, PSf1 exhibited a hydrolytic activity of 3 U/mg, with a Km value of 337 μmol/L. Substrate specificity analysis revealed for the first time that PSf1 had dual activity, hydrolyzing both α-fucosidic bonds and β-galactosidic bonds. Structural analysis (2.8 Å, PDB ID: 8Z63) showed that the enzyme existed as a non-mirrored dimer in its active form, where the fucose moiety of the substrate and its structural analog, galactose, bound within the conserved active site via hydrogen bonds and other interactions. Molecular dynamics simulations further demonstrated that PSf1 exhibited higher binding stability and lower binding free energy for the fucose substrate, while its hydrolytic activity towards galactosidic bonds originated from recognition of structural similarity. PSf1 was a multifunctional glycoside hydrolase with both α-fucosidase and β-galactosidase activity. The discovery of this enzyme not only elucidates the metabolic mechanism by which P. sulfatireligans efficiently utilizes fucoidan, but also provides a novel enzymatic resource and theoretical foundation for the functional development of fucoidan and enzyme-based synthesis and modification of human milk oligosaccharides, with significant potential applications.
, authors=Xuguang QIN
1, Chunping WANG
1, Xiangfeng PAN
2, Tiantian QIN
1, Jiazhong WANG
1, *, authorsList=Xuguang QIN, Chunping WANG, Xiangfeng PAN, Tiantian QIN, Jiazhong WANG, authorCompany=null, correspAuthors=Jiazhong WANG, 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=1320166452020236799, articleId=1320166450153771501, tenantId=1146029695717560320, journalId=1260987677001138203, language=CN, title=海洋硫酸盐还原菌
Pontiella sulfatireligans岩藻糖苷酶PSf1的功能与结构研究, columnId=1261336277547401341, journalTitle=食品工业科技, columnName=生物工程, runingTitle=null, highlight=null, articleAbstract=
岩藻糖苷酶在岩藻多糖的生物降解与功能发掘中具有关键作用,但其催化多样性特征与分子机制尚不明确。本研究旨在从海洋微生物Pontiella sulfatireligans中发掘新型岩藻糖苷酶,解析其酶学特性与结构基础。糖苷酶的挖掘通过基因组比较与注释鉴定岩藻糖降解相关酶系;从中克隆表达候选α-L-岩藻糖苷酶基因PSf1,以对硝基苯基糖苷为底物测定其水解活性与底物亲和力,并通过底物谱评估其底物特异性;利用X射线晶体衍射解析PSf1的三维结构,结合分子动力学模拟分析其与不同底物的结合模式与稳定性差异。结果表明,以pNP-Gal为底物时,PSf1水解活力达3 U/mg,Km值为337 μmol/L。底物特异性分析首次发现PSf1兼具水解α-岩藻糖苷键与β-乳糖糖苷键的双重活性。PSf1的结构(2.8 Å,PDB ID: 8Z63)分析显示该酶在活性状态下以非镜像二聚体形式存在,底物分子岩藻糖基单元与其结构类似物半乳糖糖基通过氢键等方式结合在保守活性结构域中。分子动力学模拟进一步表明,PSf1对岩藻糖底物具有更高的结合稳定性与更低的结合自由能,其对半乳糖苷键的水解活性源自于底物结构相似性的识别。PSf1是一种兼具α-岩藻糖苷酶与β-半乳糖苷酶活性的多功能糖苷水解酶,该酶的发现不仅阐释了P. sulfatireligans高效利用岩藻多糖的代谢机制,也为岩藻多糖的功能化开发及母乳低聚糖的酶法合成与改造提供了具有应用潜力的新型酶资源与理论依据。
, authors=秦绪光
1, 王春平
1, 潘向峰
2, 秦甜甜
1, 王加众
1, *, authorsList=秦绪光, 王春平, 潘向峰, 秦甜甜, 王加众, authorCompany=null, correspAuthors=王加众, authorNote=
, correspAuthorsNote=
, copyrightStatement=版权所有 © 2026《食品工业科技》编辑部, copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=mGES7QSVIhRZczWBOGdU7g==, magXml=gYj567BpLWmGIdz4QTXx+Q==, pdfUrl=null, pdf=5pRMAuyRsUYyVLAjbmipIw==, pdfFileSize=5504844, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=GrAb7hr7Q55F/gaJr6YKIQ==, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=5eftMqgRbdTbRZpH6dM5og==, mapNumber=null, fund=null)}, authors=[Author(id=1320167020725915816, tenantId=1146029695717560320, journalId=1260987677001138203, articleId=1320166450153771501, orderNo=0, firstName=null, middleName=null, lastName=null, nameCn=null, orcid=null, stid=null, country=null, authorPic=null, dead=0, email=qin99xu99@sina.com, emailSecond=null, emailThird=null, correspondingAuthor=0, authorType=1, ext={EN=AuthorExt(id=1320167020818190506, tenantId=1146029695717560320, journalId=1260987677001138203, articleId=1320166450153771501, authorId=1320167020725915816, language=EN, stringName=Xuguang QIN, firstName=Xuguang, middleName=null, lastName=QIN, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
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1Rizhao Animal Disease Prevention and Control Center, Rizhao 276826, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1320167020910465195, tenantId=1146029695717560320, journalId=1260987677001138203, articleId=1320166450153771501, authorId=1320167020725915816, language=CN, stringName=秦绪光, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
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1日照市动物疫病预防控制中心,山东日照 276826, bio={"content":"
秦绪光(1979−)男,硕士,高级畜牧师,研究方向:兽医微生物、畜禽疫病防控、畜禽健康养殖,E-mail:qin99xu99@sina.com
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秦绪光(1979−)男,硕士,高级畜牧师,研究方向:兽医微生物、畜禽疫病防控、畜禽健康养殖,E-mail:qin99xu99@sina.com
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1日照市动物疫病预防控制中心,山东日照 276826, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null)}, companyList=[AuthorCompany(id=1320167020507812001, tenantId=1146029695717560320, journalId=1260987677001138203, articleId=1320166450153771501, xref=1, ext=[AuthorCompanyExt(id=1320167020516200610, tenantId=1146029695717560320, journalId=1260987677001138203, articleId=1320166450153771501, companyId=1320167020507812001, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
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1日照市动物疫病预防控制中心,山东日照 276826)])]), Author(id=1320167021220843698, tenantId=1146029695717560320, journalId=1260987677001138203, articleId=1320166450153771501, 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=1320167021300535476, tenantId=1146029695717560320, journalId=1260987677001138203, articleId=1320166450153771501, authorId=1320167021220843698, language=EN, stringName=Xiangfeng PAN, firstName=Xiangfeng, middleName=null, lastName=PAN, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
2, address=
2Rizhao Animal Husbandry and Veterinary Management Service Center, Rizhao 276800, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1320167021392810165, tenantId=1146029695717560320, journalId=1260987677001138203, articleId=1320166450153771501, authorId=1320167021220843698, language=CN, stringName=潘向峰, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
2, address=
2日照市畜牧兽医管理服务中心,山东日照 276800, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null)}, companyList=[AuthorCompany(id=1320167020625252516, tenantId=1146029695717560320, journalId=1260987677001138203, articleId=1320166450153771501, xref=2, ext=[AuthorCompanyExt(id=1320167020637835429, tenantId=1146029695717560320, journalId=1260987677001138203, articleId=1320166450153771501, companyId=1320167020625252516, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
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2日照市畜牧兽医管理服务中心,山东日照 276800)])]), Author(id=1320167021480890551, tenantId=1146029695717560320, journalId=1260987677001138203, articleId=1320166450153771501, 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=1320167021631885497, tenantId=1146029695717560320, journalId=1260987677001138203, articleId=1320166450153771501, authorId=1320167021480890551, language=EN, stringName=Tiantian QIN, firstName=Tiantian, middleName=null, lastName=QIN, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
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Bacteroides thetaiotaomicron[J]. Biochemistry, 2014, 53(9): 1447−1455., articleTitle=null, refAbstract=null)], funds=null, companyList=[AuthorCompany(id=1320167020507812001, tenantId=1146029695717560320, journalId=1260987677001138203, articleId=1320166450153771501, xref=1, ext=[AuthorCompanyExt(id=1320167020516200610, tenantId=1146029695717560320, journalId=1260987677001138203, articleId=1320166450153771501, companyId=1320167020507812001, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
1Rizhao Animal Disease Prevention and Control Center, Rizhao 276826, China), AuthorCompanyExt(id=1320167020528783523, tenantId=1146029695717560320, journalId=1260987677001138203, articleId=1320166450153771501, companyId=1320167020507812001, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
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2Rizhao Animal Husbandry and Veterinary Management Service Center, Rizhao 276800, China), AuthorCompanyExt(id=1320167020650418342, tenantId=1146029695717560320, journalId=1260987677001138203, articleId=1320166450153771501, companyId=1320167020625252516, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
2日照市畜牧兽医管理服务中心,山东日照 276800)])], figs=[ArticleFig(id=1320167024542732490, tenantId=1146029695717560320, journalId=1260987677001138203, articleId=1320166450153771501, language=EN, label=Fig.1, caption=
Results of purity and domain structure of PSf1, figureFileSmall=jpu3/hKpVNeZauA3+3ehSg==, figureFileBig=ct40r8zVsHOpAlFAFdvvMQ==, tableContent=null), ArticleFig(id=1320167024605647051, tenantId=1146029695717560320, journalId=1260987677001138203, articleId=1320166450153771501, language=CN, label=图1, caption=
PSf1蛋白纯度与结构域结果注:a:PSf1蛋白质纯化SDS-PAGE凝胶电泳图;泳道1:PSf1-cut,泳道2:PSf1,泳道M:marker;b:PSf1 具有一个α-L-fucosidase domains以及Tat信号肽结构域;Tat信号肽有3个功能域,包括N-region(MPIQNINRRS)、H-region(LLCSGAATTAALAVS)、E-region(PSVFG);c:PSf1与信号肽缺失型PSf1的生物活性分析;****表示两组蛋白的活性分析均为三次重复的情况下,PSf1与截短蛋白活性的显著性差异P<0.01,表明后者没有生物学催化功能。
, figureFileSmall=jpu3/hKpVNeZauA3+3ehSg==, figureFileBig=ct40r8zVsHOpAlFAFdvvMQ==, tableContent=null), ArticleFig(id=1320167024697921740, tenantId=1146029695717560320, journalId=1260987677001138203, articleId=1320166450153771501, language=EN, label=Fig.2, caption=
Chemical structure of pNP-linked sugar, figureFileSmall=g7+dHjJ54mPqw1LZACPo/A==, figureFileBig=pMtVV0HYGnq5+vKsmeGHKw==, tableContent=null), ArticleFig(id=1320167024786002125, tenantId=1146029695717560320, journalId=1260987677001138203, articleId=1320166450153771501, language=CN, label=图2, caption=
对硝基苯酚连接的寡糖化合物结构, figureFileSmall=g7+dHjJ54mPqw1LZACPo/A==, figureFileBig=pMtVV0HYGnq5+vKsmeGHKw==, tableContent=null), ArticleFig(id=1320167024869888206, tenantId=1146029695717560320, journalId=1260987677001138203, articleId=1320166450153771501, language=EN, label=Fig.3, caption=
TLC of PSf1 with various sugar substrate, figureFileSmall=FMeiBvex/2cNdHTnU+89SA==, figureFileBig=F21fEYbr6L+NDyIMKILosg==, tableContent=null), ArticleFig(id=1320167024932802767, tenantId=1146029695717560320, journalId=1260987677001138203, articleId=1320166450153771501, language=CN, label=图3, caption=
PSf1水解不同底物糖分子的TLC注:1:岩藻糖;2:半乳糖;3:葡萄糖;4:乳糖;5:2'-岩藻基乳糖;6:3'-岩藻基乳糖;7:血型Ⅱ糖;8:乳-N-二岩藻己糖;9:PSf1与乳糖共孵育;10:PSf1与2'-岩藻基乳糖共孵育;11:PSf1与3'-岩藻基乳糖共孵育;12:PSf1与血型Ⅱ糖共孵育;13:PSf1与乳-N-二岩藻己糖共孵育。
, figureFileSmall=FMeiBvex/2cNdHTnU+89SA==, figureFileBig=F21fEYbr6L+NDyIMKILosg==, tableContent=null), ArticleFig(id=1320167025008300240, tenantId=1146029695717560320, journalId=1260987677001138203, articleId=1320166450153771501, language=EN, label=Fig.4, caption=
Optimal temperature, pH and kinetic assay of PSf1 with pNP-Gal, figureFileSmall=0uWaZMXt9hbyfKVsww0pzg==, figureFileBig=59tra/B3/eAt/pQCEoO2TQ==, tableContent=null), ArticleFig(id=1320167025100574929, tenantId=1146029695717560320, journalId=1260987677001138203, articleId=1320166450153771501, language=CN, label=图4, caption=
PSf1最适温度与pH以及PSf1水解pNP-Gal的动力学分析注:a:PSf1不同温度下的酶活性;b:PSf1不同pH下的酶活性;c:PSf1不同底物浓度下最大反应速率。
, figureFileSmall=0uWaZMXt9hbyfKVsww0pzg==, figureFileBig=59tra/B3/eAt/pQCEoO2TQ==, tableContent=null), ArticleFig(id=1320167025180266706, tenantId=1146029695717560320, journalId=1260987677001138203, articleId=1320166450153771501, language=EN, label=Fig.5, caption=
Crystal structure assay of PSf1, figureFileSmall=AVIqyTWaTCpuqlmOF7Tgvw==, figureFileBig=dcTFfjBDfQAvn8okAgwb0w==, tableContent=null), ArticleFig(id=1320167025247375571, tenantId=1146029695717560320, journalId=1260987677001138203, articleId=1320166450153771501, language=CN, label=图5, caption=
PSf1三维结构分析注:a:PSf1在活性状态下以不对称二聚体形式存在,活性区域为由7个β-折叠片组成的TIM结构域;b:GH29家族岩藻糖苷酶5K9H(紫色)和PSf1(蓝色)结构比对;图中虚线区域内的不规则loop在PSf1中代替了第六条β-折叠片。
, figureFileSmall=AVIqyTWaTCpuqlmOF7Tgvw==, figureFileBig=dcTFfjBDfQAvn8okAgwb0w==, tableContent=null), ArticleFig(id=1320167025331261652, tenantId=1146029695717560320, journalId=1260987677001138203, articleId=1320166450153771501, language=EN, label=Fig.6, caption=
Sequence and domain active site of PSf1 and other fucodiase from GH29 family, figureFileSmall=r10MWGZLmcd2R/O+Bydezg==, figureFileBig=ZYeyI4kxOUoxkp6NBBa2BA==, tableContent=null), ArticleFig(id=1320167025410953429, tenantId=1146029695717560320, journalId=1260987677001138203, articleId=1320166450153771501, language=CN, label=图6, caption=
PSf1与GH29家族其他糖苷酶的序列与结构域活性位点注:a:PSf1与GH29家族糖苷酶氨基酸序列比对分析,星号标记的氨基酸残基是非常保守的关键氨基酸,motif xWxDx在糖苷酶中是高保守的区域;b:绿色标记的氨基酸残基表明GH29家族糖苷酶的保守酸碱催化体;c:GH29家族糖苷酶PSf1(PDB:8Z63,蓝色)、Tmα-Fuc(PDB:1HL8,绿色)、FgFco1(PDB:4NI3,橘色)、E1_10125(PDB:6TR3,黄色)的结构与保守氨基酸比对;d:PSf1与突变体PSf1(D237A)、PSf1(E286A)的酶活分析;****表示两组蛋白的活性分析均为三次重复的情况下,两种突变体蛋白活性的显著性差异,P<0.01,表明突变体D237A没有生物学催化功能。
, figureFileSmall=r10MWGZLmcd2R/O+Bydezg==, figureFileBig=ZYeyI4kxOUoxkp6NBBa2BA==, tableContent=null), ArticleFig(id=1320167025473867990, tenantId=1146029695717560320, journalId=1260987677001138203, articleId=1320166450153771501, language=EN, label=Fig.7, caption=
Substrate binding site assay of PSf1, figureFileSmall=u5x0MSAPo+qDA/se/C0K+g==, figureFileBig=wJa5Fs7282+2aVaWC9l7Zg==, tableContent=null), ArticleFig(id=1320167025549365463, tenantId=1146029695717560320, journalId=1260987677001138203, articleId=1320166450153771501, language=CN, label=图7, caption=
PSf1 与底物分子结合结构域注:a:PSf1与pNP-Gal的结合状态;b:PSf1与CNP-Fuc的结合状态。
, figureFileSmall=u5x0MSAPo+qDA/se/C0K+g==, figureFileBig=wJa5Fs7282+2aVaWC9l7Zg==, tableContent=null), ArticleFig(id=1320167025616474328, tenantId=1146029695717560320, journalId=1260987677001138203, articleId=1320166450153771501, language=EN, label=Fig.8, caption=
Molecular dynamics simulation analysis of PSf1 complex with substrate within 100 ns, figureFileSmall=onNoBD3KZlTzmbKJ1f7SGQ==, figureFileBig=zwpQucZsJ10ZIYFjbQiMHQ==, tableContent=null), ArticleFig(id=1320167025679388889, tenantId=1146029695717560320, journalId=1260987677001138203, articleId=1320166450153771501, language=CN, label=图8, caption=
复合物100 ns分子动力学模拟分析注:a:复合物的RMSD曲线;b:小分子的RMSD曲线;c:复合物的Rg曲线;d:复合物的SASA曲线;e:蛋白的RMSF曲线;f:复合物的氢键变化曲线;g:PSf1_CNP-Fuc复合物快照分析:h:PSf1_pNP-Gal复合物快照分析。
, figureFileSmall=onNoBD3KZlTzmbKJ1f7SGQ==, figureFileBig=zwpQucZsJ10ZIYFjbQiMHQ==, tableContent=null), ArticleFig(id=1320167025750692058, tenantId=1146029695717560320, journalId=1260987677001138203, articleId=1320166450153771501, language=EN, label=Table 1, caption=
Data collection and indicator of PSf1 crystal structure
, figureFileSmall=null, figureFileBig=null, tableContent=
| 蛋白数据编号 | 8Z63 | 总反射数 | 113483(11118) |
|---|
| 空间群 | P2 | 独立反射数 | 17505(1483) |
| 分辨率范围 | 47.8 - 2.822(2.922 - 2.822) | 多重性 | 6.5(6.5) |
| 晶胞参数 | 52.0607 79.8223 89.724 90 98.8458 90 | 完整度(%) | 94.78(84.65) |
| 合并R因子 | 0.1097(0.8923) | 平均信噪比(I) | 12.27(2.41) |
| 冗余合并R因子 | 0.1193(0.9682) | 总体温度因子 | 60.44 |
| 精度指示合并R因子 | 0.04621(0.3728) | 精修反射数 | 16715(1483) |
| 半数据集相关系数 | 0.997(0.757) | R-free反射数 | 817(75) |
| 氢键原子数 | 5407 | 工作R因子 | 0.2233(0.3401) |
| 非氢原子 | 5407 | 自由R因子 | 0.2500(0.3744) |
| 氨基酸残基 | 670 | 主链二面角不允许区域(%) | 0.15 |
| 键长均方根差 | 0.006 | 残基侧链构像(%) | 6.15 |
| 键角均方根差 | 0.96 | 空间冲突分数 | 11.83 |
| 主链二面角区域(%) | 94.44 | 平均温度因子 | 64.63 |
| 主链二面角允许区域(%) | 5.41 | 蛋白质平均B因子 | 64.63 |
), ArticleFig(id=1320167025817800923, tenantId=1146029695717560320, journalId=1260987677001138203, articleId=1320166450153771501, language=CN, label=表1, caption=
PSf1 晶体结构的数据参数与指标
, figureFileSmall=null, figureFileBig=null, tableContent=
| 蛋白数据编号 | 8Z63 | 总反射数 | 113483(11118) |
|---|
| 空间群 | P2 | 独立反射数 | 17505(1483) |
| 分辨率范围 | 47.8 - 2.822(2.922 - 2.822) | 多重性 | 6.5(6.5) |
| 晶胞参数 | 52.0607 79.8223 89.724 90 98.8458 90 | 完整度(%) | 94.78(84.65) |
| 合并R因子 | 0.1097(0.8923) | 平均信噪比(I) | 12.27(2.41) |
| 冗余合并R因子 | 0.1193(0.9682) | 总体温度因子 | 60.44 |
| 精度指示合并R因子 | 0.04621(0.3728) | 精修反射数 | 16715(1483) |
| 半数据集相关系数 | 0.997(0.757) | R-free反射数 | 817(75) |
| 氢键原子数 | 5407 | 工作R因子 | 0.2233(0.3401) |
| 非氢原子 | 5407 | 自由R因子 | 0.2500(0.3744) |
| 氨基酸残基 | 670 | 主链二面角不允许区域(%) | 0.15 |
| 键长均方根差 | 0.006 | 残基侧链构像(%) | 6.15 |
| 键角均方根差 | 0.96 | 空间冲突分数 | 11.83 |
| 主链二面角区域(%) | 94.44 | 平均温度因子 | 64.63 |
| 主链二面角允许区域(%) | 5.41 | 蛋白质平均B因子 | 64.63 |
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