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dc.contributor.authorPeng, Huizh_CN
dc.contributor.authorYang, Mingzh_CN
dc.contributor.authorHuang, Wen-Shuzh_CN
dc.contributor.authorDing, Jianzh_CN
dc.contributor.authorQu, Hai-Dongzh_CN
dc.contributor.authorCai, Jing-Jingzh_CN
dc.contributor.authorZhang, Naizh_CN
dc.contributor.authorWang, Ke-Jianzh_CN
dc.contributor.author王克坚zh_CN
dc.date.accessioned2011-04-26T08:02:24Z
dc.date.available2011-04-26T08:02:24Z
dc.date.issued2010-03zh_CN
dc.identifier.citationPROTEIN EXPRESSION AND PURIFICATION,2010,70(1):109-115zh_CN
dc.identifier.issn1046-5928zh_CN
dc.identifier.urihttp://dx.doi.org/doi: 10.1016/j.pep.2009.09.008zh_CN
dc.identifier.urihttps://dspace.xmu.edu.cn/handle/2288/1831
dc.description.abstractScygonadin is an anionic antimicrobial peptide recently identified from the seminal plasma of Scylla serrata. To gain more detailed information on its antimicrobial activity, scygonadin mature peptide was expressed in Escherichia coli in order to obtain a large quantity of biologically active product. An approximately 43 kDa fusion protein CKS-scygonadin was obtained in a highly stable and soluble form. The soluble component of the fusion CKS-scygonadin was purified by immobilized metal affinity chromatography (IMAC). A single 11 kDa recombinant scygonadin was cleaved from CKS-scygonadin and purified from the cleavage mixture using an affinity chromatography column with a yield of 10.6 mg/L. Alternatively, a recombinant scygonadin was purified from pET28-scygonadin by one-step Ni2+ affinity chromatography and 65.9 mg/L pure recombinant scygonadin was obtained which was higher than that purified from pTrc-CKS/scygonadin in bacteria culture. The recombinant scygonadin was confirmed using SDS-PAGE analysis and MS-fingerprinting. Both recombinant products of scygonadin from different expressed plasmids showed the activity against both Gram-positive and Gram-negative bacteria, but no activity against yeast and fungi tested. The kinetic studies showed that the recombinant scygonadin was strong active against Staphylococcus aureus and the killing of S. aureus appeared time and dose dependent. Considering the quantity of recombinant product and the applicability of purification, the pET28-scygonadin expression system is a better choice to produce large quantities of recombinant scygonadin for commercial use in future. This is the first report on the heterologous expression of antimicrobial peptide scygonadin in E coli. (C) 2009 Elsevier Inc. All rights reserved.zh_CN
dc.description.sponsorshipNational Natural Science Foundation of China (NSFC) [40676083]; National High Technology Research and Development Program of China (863 Program) [2007AA 091406]zh_CN
dc.language.isoenzh_CN
dc.publisherACADEMIC PRESS INC ELSEVIER SCIENCEzh_CN
dc.subjectScylla serratazh_CN
dc.subjectScygonadinzh_CN
dc.subjectRecombinant expressionzh_CN
dc.subjectAntimicrobial activityzh_CN
dc.titleSoluble expression and purification of a crab antimicrobial peptide scygonadin in different expression plasmids and analysis of its antimicrobial activityzh_CN
dc.typeArticlezh_CN


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