Article(id=1241053878695809131, tenantId=1146029695717560320, journalId=1192105938417971205, issueId=1241053870428844598, articleNumber=null, orderNo=null, doi=10.13343/j.cnki.wsxb.20230450, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=research-article, receivedDate=1688400000000, receivedDateStr=2023-07-04, revisedDate=null, revisedDateStr=null, acceptedDate=1698249600000, acceptedDateStr=2023-10-26, onlineDate=1773819902346, onlineDateStr=2026-03-18, pubDate=1706976000000, pubDateStr=2024-02-04, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1773819902346, onlineIssueDateStr=2026-03-18, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1773819902346, creator=13701087609, updateTime=1773819902346, updator=13701087609, issue=Issue{id=1241053870428844598, tenantId=1146029695717560320, journalId=1192105938417971205, year='2024', volume='64', issue='2', pageStart='331', pageEnd='632', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=0, createTime=1773819900376, creator=13701087609, updateTime=1773820055293, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1241054520269140366, tenantId=1146029695717560320, journalId=1192105938417971205, issueId=1241053870428844598, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1241054520269140367, tenantId=1146029695717560320, journalId=1192105938417971205, issueId=1241053870428844598, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=502, endPage=515, ext={EN=ArticleExt(id=1241053879685664886, articleId=1241053878695809131, tenantId=1146029695717560320, journalId=1192105938417971205, language=EN, title=Characterization and biotransformation of cytochrome P450 CYP154C34 from
Streptomyces nanshensis, columnId=1241045257748533520, journalTitle=Acta Microbiologica Sinica, columnName=Research Articles, runingTitle=null, highlight=null, articleAbstract=
[Objective] Cytochrome P450 can catalyze the oxidation of unactivated C−H bonds in complex compounds with high regio- and stereoselectivity under mild conditions. They are multifunctional biocatalysts which play important roles in the synthesis of chemical raw materials, the degradation of environmental pollutants, and drug synthesis. This paper probed into the functions of a novel cytochrome P450 enzyme named CYP154C34 fromStreptomyces nanshensis by heterologous expression and whole-cell biotransformation.[Methods] We constructed two recombinant BL21(DE3) strains for whole-cell biotransformation harboring pET28a-CYP154C34-RhFRED and pET28a-CYP154C34+pACYCDuet-Pdx/PdR, respectively. Additionally, we generated a recombinant BL21(DE3) strain for heterologous expression containing pET28a-CYP154C34. We employed whole-cell biotransformation to screen the substrates and analyzed product structures using standard methods. We then compared the substrate conversion rates of the two strains of whole-cell biotransformation with those of enzyme reactions. Finally, we analyzed the substrate affinity and analogues of CYP154C34.[Results] Nine steroids hydroxylated at the 16α position by CYP154C34 were identified, including progesterone, testosterone, and androstenedione. The BL21(DE3) strain carrying pET28a-CYP154C34-RhFRED showed the highest substrate conversion rate, achieving over 90% conversion rates for seven substrates including progesterone, testosterone, and androstenedione. In addition, CYP154C34 had stronger affinity to its substrates than the analogues.[Conclusion] This study constructed two recombinant strains of CYP154C34 for whole-cell biotransformation and identified their catalytic functions. CYP154C34 can efficiently hydroxylate a wide range of steroid substrates at the 16α position with high conversion rates and excellent regio- and stereoselectivity, serving as a promising candidate for industrial applications.
, correspAuthors=Lianhua XU, 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=Qilin GAO, Jian YANG, Rong LI, Gang LAI, Lianhua XU), CN=ArticleExt(id=1241053884865630514, articleId=1241053878695809131, tenantId=1146029695717560320, journalId=1192105938417971205, language=CN, title=南沙链霉菌来源细胞色素P450酶CYP154C34的表征及生物转化, columnId=1192149544164012138, journalTitle=微生物学报, columnName=研究报告, runingTitle=null, highlight=null, articleAbstract=
【目的】P450酶作为一种多功能生物催化剂,可在温和条件下高区域和立体选择性地催化复杂化合物中未活化的C−H键,因此P450酶在化工原料合成、环境污染物降解及药物合成等领域都具有重要作用。本文对南沙链霉菌基因组中的一个新颖的P450酶CYP154C34进行研究,通过构建异源表达和全细胞生物转化重组菌探究其功能。【方法】构建2种全细胞生物转化BL21(DE3)重组菌(含pET28a-CYP154C34-RhFRED和pET28a-CYP154C34+pACYCDuet-Pdx/PdR)和1种异源表达BL21(DE3)重组菌(含pET28a-CYP154C34)。通过全细胞生物转化的方式筛选底物,分析催化功能及产物结构。比较2种全细胞生物转化重组菌和体外酶反应对底物的转化率。分析CYP154C34和不同底物及底物类似物的亲和力。【结果】通过底物筛选和产物鉴定发现CYP154C34可催化包括孕酮、睾酮、雄烯二酮在内的9种甾体化合物16α位羟基化。通过2种不同还原伴侣的全细胞体系及体外酶反应对底物转化率的比较,发现含有pET28a-CYP154C34-RhFRED的BL21(DE3)重组菌的转化率最高,可对孕酮、睾酮、雄烯二酮等7种底物实现超过90%的转化率。通过亲和力分析发现CYP154C34对底物化合物的亲和力比类似物高。【结论】本研究构建了2种CYP154C34的全细胞生物转化重组菌并鉴定其功能。CYP154C34催化的底物谱宽并且具有极高的区域和立体选择性及较高的转化率,具有良好的工业应用前景。
, correspAuthors=许莲花, 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=/qxk7ZlItNiziQTxtRv/uw==, magXml=r18/v9lypsw6Ak2BCv1JxQ==, pdfUrl=null, pdf=tDrn8wAMs4Db2d0rIMnckg==, pdfFileSize=1157771, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=DXH/0aaDb9B4hbVOcKJRSA==, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=hDYu34oMtqACghjxEIUYUw==, mapNumber=null, authorCompany=null, fund=null, authors=null, authorsList=高齐霖, 杨建, 李蓉, 赖刚, 许莲花)}, authors=[Author(id=1241083587919933548, tenantId=1146029695717560320, journalId=1192105938417971205, articleId=1241053878695809131, 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, 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Candidate steroid compounds for substrate screening., figureFileSmall=Nd3pf73xeonPOr0JDPsWXA==, figureFileBig=1O92Qe7P/HU45nPMKLskwA==, tableContent=null), ArticleFig(id=1241083594060394825, tenantId=1146029695717560320, journalId=1192105938417971205, articleId=1241053878695809131, language=CN, label=图1, caption=
用于底物筛选的候选甾体化合物, figureFileSmall=Nd3pf73xeonPOr0JDPsWXA==, figureFileBig=1O92Qe7P/HU45nPMKLskwA==, tableContent=null), ArticleFig(id=1241083594186223956, tenantId=1146029695717560320, journalId=1192105938417971205, articleId=1241053878695809131, language=EN, label=Figure 2, caption=
Electrophoretic maps of each fragment were generated during the construction of CYP154C34 recombinant bacteria. M in the figure stands for marker. A: The geneRhFRED was amplified using pET28b-RhFRED as a template, while the geneCYP154C34 was amplified using the genome ofStreptomyces nanshensis SCSIO 01066 as a template. B: To amplify the linearized pET28a withNde I andXho I restriction sites at both ends, the circular pET28a was used as a template to amplify. C: ThePdR andPdx genes were amplified using pET19b-PdR and pET28b-Pdx as templates, respectively. D: TheCYP154C34 containing pET28a homology arms at both ends was amplified using pET28a-CYP154C34-RhFRED as a template. The DNA sequence ofCYP154C34 was amplified using pET28a-CYP154C34-RhFRED as a template. The amplified product contains homology arms at both ends of the CYP154C34 sequence., figureFileSmall=qI5YsN97/j5bVNBPKd4t4Q==, figureFileBig=UEThPjmjTzPHip0lk2eXig==, tableContent=null), ArticleFig(id=1241083594307858780, tenantId=1146029695717560320, journalId=1192105938417971205, articleId=1241053878695809131, language=CN, label=图2, caption=
构建CYP154C34重组菌过程中的各片段电泳图, figureFileSmall=qI5YsN97/j5bVNBPKd4t4Q==, figureFileBig=UEThPjmjTzPHip0lk2eXig==, tableContent=null), ArticleFig(id=1241083594429493603, tenantId=1146029695717560320, journalId=1192105938417971205, articleId=1241053878695809131, language=EN, label=Figure 3, caption=
HPLC analysis and substrate screening. A and B represent two typical substrates that can be catalyzed by CYP154C34. A: CYP154C34 can completely convert testosterone into products within 24 h. B: CYP154C34 cannot fully convert 17α-hydroxyprogesterone into products within 24 h. C: Steroid substrates that can be catalyzed by CYP154C34., figureFileSmall=W5IDGIidAXkiL/b1DRIaHA==, figureFileBig=+2aIFim6AsI0ceemz5kIlA==, tableContent=null), ArticleFig(id=1241083594500796777, tenantId=1146029695717560320, journalId=1192105938417971205, articleId=1241053878695809131, language=CN, label=图3, caption=
HPLC分析及底物筛选, figureFileSmall=W5IDGIidAXkiL/b1DRIaHA==, figureFileBig=+2aIFim6AsI0ceemz5kIlA==, tableContent=null), ArticleFig(id=1241083594593071467, tenantId=1146029695717560320, journalId=1192105938417971205, articleId=1241053878695809131, language=EN, label=Figure 4, caption=
HPLC analysis and identification of product structure. A, B, and C show that CYP154C34 converts progesterone, androstenedione, and testosterone to generate 16α-hydroxylated products compared with the standard compounds. a shows the HPLC analysis of the conversion substrates using BL21(DE3) harboring pET28a-RhFRED, serving as a control; b shows the HPLC analysis of the conversion substrates by BL21(DE3) harboring pET28a-CYP154C34-RhFRED; c shows the standard compounds of the 16α-hydroxylated products., figureFileSmall=QSh6ycGNr00lzPQjDtSn/w==, figureFileBig=H+8IKWwiZJ5iLMP1PbfG7w==, tableContent=null), ArticleFig(id=1241083594735677812, tenantId=1146029695717560320, journalId=1192105938417971205, articleId=1241053878695809131, language=CN, label=图4, caption=
HPLC分析及产物结构鉴定, figureFileSmall=QSh6ycGNr00lzPQjDtSn/w==, figureFileBig=H+8IKWwiZJ5iLMP1PbfG7w==, tableContent=null), ArticleFig(id=1241083594861506935, tenantId=1146029695717560320, journalId=1192105938417971205, articleId=1241053878695809131, language=EN, label=Figure 5, caption=
NMR data for 16α-hydroxyestradiol.13C-NMR spectrum (A) and1H-NMR spectrum (B) are shown. A:13C NMR (151 MHz, DMSO-d6) δ 155.35, 137.61, 130.88, 126.43, 115.42, 113.21, 89.24, 77.20, 47.79, 43.99, 43.82, 38.71, 37.15, 34.54, 29.62, 27.43, 26.18, 12.89. B:1H NMR (600 MHz, DMSO-d6) δ 7.03 (d,J=8.5 Hz, 1H), 6.50 (dd,J=8.4, 2.6 Hz, 1H), 6.42 (d,J=2.6 Hz, 1H), 3.86–3.80 (m, 1H), 3.29 (d,J=5.6 Hz, 1H), 2.70 (dd,J=10.5, 5.8 Hz, 2H), 2.21 (dt,J=9.6, 3.8 Hz, 1H), 2.13–2.07 (m, 1H), 1.77 (d,J=3.3 Hz, 0H), 1.75 (d,J=3.8 Hz, 0H), 1.73 (dd,J=6.7, 4.0 Hz, 1H), 1.67 (d,J=9.1 Hz, 1H), 1.64 (s, 0H), 1.41 (qd,J=7.8, 2.2 Hz, 2H), 1.29 (d,J=3.6 Hz, 0H), 1.27 (d,J=3.5 Hz, 0H), 1.24 (s, 1H), 1.23 (s, 1H), 1.21 (s, 0H), 1.20–1.17 (m, 0H), 0.66 (s, 3H)., figureFileSmall=XEHCv5HulxfQX7DwsT1spQ==, figureFileBig=qdVk7O8pish7rurXgeKQeA==, tableContent=null), ArticleFig(id=1241083594962170237, tenantId=1146029695717560320, journalId=1192105938417971205, articleId=1241053878695809131, language=CN, label=图5, caption=
16α-雌二醇的碳谱(A)和氢谱(B), figureFileSmall=XEHCv5HulxfQX7DwsT1spQ==, figureFileBig=qdVk7O8pish7rurXgeKQeA==, tableContent=null), ArticleFig(id=1241083595062833537, tenantId=1146029695717560320, journalId=1192105938417971205, articleId=1241053878695809131, language=EN, label=Figure 6, caption=
Purification and enzymatic property analysis of CYP154C34. A: The results of SDS-PAGE electrophoresis for CYP154C34 showed that the protein bands were singlular, and the molecular weight of the protein was approximately 50 kDa. B: The spectra were measured in a 50 mmol/L sodium phosphate buffer (pH 7.4) containing 10% (V/V) glycerol. Resting state (dash line), reducing state solid line, and reducing+CO state (dotted line) are depicted. Inset: CO difference spectrum ((reducing+CO state)–reducing state). C: The graph depicts the change in absorbance at 446 nm over a period of 200 s, with the absorption level eventually returning to its initial state., figureFileSmall=0fdVJ9idn+OPvzJQgqGAsQ==, figureFileBig=2yguRW+kNrJQRQNhLwsitw==, tableContent=null), ArticleFig(id=1241083595150913930, tenantId=1146029695717560320, journalId=1192105938417971205, articleId=1241053878695809131, language=CN, label=图6, caption=
CYP154C34的纯化及酶学性质分析, figureFileSmall=0fdVJ9idn+OPvzJQgqGAsQ==, figureFileBig=2yguRW+kNrJQRQNhLwsitw==, tableContent=null), ArticleFig(id=1241083595238994317, tenantId=1146029695717560320, journalId=1192105938417971205, articleId=1241053878695809131, language=EN, label=Figure 7, caption=
Comparison of conversion rate of CYP154C34 in whole-cell conversion (invivo) and enzymatic conversion (invitro). The conversion rate of 10 steroid compounds was analyzed using three catalytic systems and presented in a heat map. The color intensity represents the level of conversion rate, with darker shades indicating higher rates. The calculation of conversion rate was based on the ratio of product peak to the sum of product peak and remaining substrate peak in the reaction product., figureFileSmall=iu9fn+MOQJQh3ai5tCB/SQ==, figureFileBig=Bz58Kd0NS7oT0X7Sr6tszw==, tableContent=null), ArticleFig(id=1241083595381600662, tenantId=1146029695717560320, journalId=1192105938417971205, articleId=1241053878695809131, language=CN, label=图7, caption=
CYP154C34在全细胞转化和酶法转化中转化率的比较, figureFileSmall=iu9fn+MOQJQh3ai5tCB/SQ==, figureFileBig=Bz58Kd0NS7oT0X7Sr6tszw==, tableContent=null), ArticleFig(id=1241083595473875353, tenantId=1146029695717560320, journalId=1192105938417971205, articleId=1241053878695809131, language=EN, label=Figure 8, caption=
Spectroscopic analysis and comparison of the substrate binding affinity. Equilibrium dissociation constants between CYP154C34 and the substrates were determined by substrate titration. A: The titration curve of progesterone, a representative substrate, showed a continuous decrease in the 418 nm absorption peak of the protein spectrum and a simultaneous increase in the 386 nm absorption peak with an increase in substrate concentration. Eventually, the spectrum stabilizes at a completely high-spin state. B: The difference spectrum between each spectrum and the original spectrum. C: The titration curve was generated by measuring the difference in absorption at 418 nm and 386 nm in the difference spectrum, and plotting it against the concentration of progesterone. TheKd value was calculated as 1.65 μmol/L using curve fitting. D: Comparison of theKd values for seven different compounds., figureFileSmall=4yazVDozoyDSPWW+vc0NAA==, figureFileBig=5feaOCmlYTn2u9l7klQjkg==, tableContent=null), ArticleFig(id=1241083595591315867, tenantId=1146029695717560320, journalId=1192105938417971205, articleId=1241053878695809131, language=CN, label=图8, caption=
光谱分析及底物结合亲和力比较, figureFileSmall=4yazVDozoyDSPWW+vc0NAA==, figureFileBig=5feaOCmlYTn2u9l7klQjkg==, tableContent=null), ArticleFig(id=1241083595775865252, tenantId=1146029695717560320, journalId=1192105938417971205, articleId=1241053878695809131, language=EN, label=Table 1, caption=
Primers used in this study
, figureFileSmall=null, figureFileBig=null, tableContent=
| Oligonucleotide | Primer sequence (5′→3′) |
| pET28a-NdeI | ATGGCTGCCGCGCGGCACCAG |
| pET28a-XhoI | GAGCACCACCACCACCACCACTGAGATCCG |
| CYP154C34-F | CGCGCGGCAGCCATATGATGAGCCCTACGCCGAACCC |
| CYP154C34-R | GCAGCACGCCGCCGTGCAGCCG |
| RhFRED-F | ACGGCGGCGTGCTGCACCGCCATCAACCG |
| RhFRED-R | GGTGGTGGTGCTCGAGTCAGAGGCGCAGGGCCAGCC |
| PdR-F | GCCAGGATCCGAATTCTATGAACGCAAACGACAACGTGGTCATCGT |
| PdR-R | ATGCGGCCGCAAGCTTTTAGGCACTACTCAGTTCAGCTTTGGCGGCG |
| Pdx-F | AAGGAGATATACATAATGTCTAAAGTAGTGTATGTGTCACATGATGGAACGC |
| Pdx-R | GCGTGGCCGGCCGATATCTCACCATTGCCTATCGGGAACATCGACCAC |
| CYP154C34-single-F | CGCGCGGCAGCCATATGAGCCCCTACGCCGAACCC |
| CYP154C34-single-R | GGTGGTGGTGCTCGAGTCAGCCGCCGTGCAGCCG |
), ArticleFig(id=1241083595889111464, tenantId=1146029695717560320, journalId=1192105938417971205, articleId=1241053878695809131, language=CN, label=表1, caption=
本研究所用引物
, figureFileSmall=null, figureFileBig=null, tableContent=
| Oligonucleotide | Primer sequence (5′→3′) |
| pET28a-NdeI | ATGGCTGCCGCGCGGCACCAG |
| pET28a-XhoI | GAGCACCACCACCACCACCACTGAGATCCG |
| CYP154C34-F | CGCGCGGCAGCCATATGATGAGCCCTACGCCGAACCC |
| CYP154C34-R | GCAGCACGCCGCCGTGCAGCCG |
| RhFRED-F | ACGGCGGCGTGCTGCACCGCCATCAACCG |
| RhFRED-R | GGTGGTGGTGCTCGAGTCAGAGGCGCAGGGCCAGCC |
| PdR-F | GCCAGGATCCGAATTCTATGAACGCAAACGACAACGTGGTCATCGT |
| PdR-R | ATGCGGCCGCAAGCTTTTAGGCACTACTCAGTTCAGCTTTGGCGGCG |
| Pdx-F | AAGGAGATATACATAATGTCTAAAGTAGTGTATGTGTCACATGATGGAACGC |
| Pdx-R | GCGTGGCCGGCCGATATCTCACCATTGCCTATCGGGAACATCGACCAC |
| CYP154C34-single-F | CGCGCGGCAGCCATATGAGCCCCTACGCCGAACCC |
| CYP154C34-single-R | GGTGGTGGTGCTCGAGTCAGCCGCCGTGCAGCCG |
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