Screening system for chitin synthase II inhibitors from natural resources and its inhibitor prodigiosin

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dc.contributor.authorEui Il Hwang-
dc.contributor.authorYoung Kook Kim-
dc.contributor.authorHyang Bok Lee-
dc.contributor.authorHong Gi Kim-
dc.contributor.authorSung Uk Kim-
dc.date.accessioned2017-04-19T08:57:00Z-
dc.date.available2017-04-19T08:57:00Z-
dc.date.issued2000-
dc.identifier.issn1017-7825-
dc.identifier.urihttps://oak.kribb.re.kr/handle/201005/5068-
dc.description.abstractChitin synthases are identified as key enzymes of chitin biosynthesis in most of the fungi. Among them, chitin synthase II has been reported to be an essential enzyme in chitin biosynthesis, and exists as a membrane-bound form. To search and screen new antifungal agents from natural resources to inhibit chitin synthase II, the assay conditions were established using the enzyme isolated from Saccharomyces cerevisiae ECY38-38A(pAS6) that overproduces only chitin synthase II. This enzyme was activated only by partial proteolysis with trypsin. Its activity reached the maximum at 80 μg/ml of trypsin and was strongly stimulated by 2.0 mM Co2+, 1.0 mM UDP-[14C]-GlcNAc, and 32 mM free-GlcNAc. Under these assay conditions, the highest chitin synthase II activity was observed by incubation at 30°C for 90 min. However, an extremely narrow range of organic solvents up to as much as 25% of DMSO and 25% of MeOH was useful for determining optimal assay conditions. After a search for potent inhibitors of chitin synthase II from natural resources, prodigiosin was isolated from Serratia marcescens and purified by solvent extraction and silica gel column chromatographies. The structure of prodigiosin was determined by UV, IR, Mass spectral, and NMR spectral analyses. Its molecular weight and formula were found to be 323 and C20H25N3O, respectively. Prodigiosin inhibited chitin synthase II by 50% at the concentration of 115 μg/ml.-
dc.publisherKorea Soc-Assoc-Inst-
dc.titleScreening system for chitin synthase II inhibitors from natural resources and its inhibitor prodigiosin-
dc.title.alternativeScreening system for chitin synthase II inhibitors from natural resources and its inhibitor prodigiosin-
dc.typeArticle-
dc.citation.titleJournal of Microbiology and Biotechnology-
dc.citation.number2-
dc.citation.endPage257-
dc.citation.startPage251-
dc.citation.volume10-
dc.contributor.affiliatedAuthorEui Il Hwang-
dc.contributor.affiliatedAuthorYoung Kook Kim-
dc.contributor.affiliatedAuthorSung Uk Kim-
dc.contributor.alternativeName황의일-
dc.contributor.alternativeName김영국-
dc.contributor.alternativeName이향복-
dc.contributor.alternativeName김홍기-
dc.contributor.alternativeName김성욱-
dc.identifier.bibliographicCitationJournal of Microbiology and Biotechnology, vol. 10, no. 2, pp. 251-257-
dc.subject.keywordchitin synthase-
dc.subject.keywordchitin synthase II inhibitor-
dc.subject.keywordantifungal agents-
dc.subject.keywordprodigiosin-
dc.subject.localChitin synthase-
dc.subject.localchitin synthase-
dc.subject.localchitin synthase 2 inhibitor-
dc.subject.localChitin synthase II-
dc.subject.localchitin synthase Ⅱ inhibitors-
dc.subject.localchitin synthase II inhibitor-
dc.subject.localchitin synthase Ⅱ-
dc.subject.localAntifungal agent-
dc.subject.localantifungal agents-
dc.subject.localAntifungal agents-
dc.subject.localantifungal agent-
dc.subject.localProdigiosin-
dc.subject.localprodigiosin-
dc.description.journalClassY-
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