Catalytic properties of the cloned amylase from Bacillus licheniformis

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dc.contributor.authorIn-Cheol Kim-
dc.contributor.authorJae-Ho Cha-
dc.contributor.authorJung-Ryul Kim-
dc.contributor.authorSo-Young Jang-
dc.contributor.authorByung-Cheol Seo-
dc.contributor.authorTae-Kyou Cheong-
dc.contributor.authorDae Sil Lee-
dc.contributor.authorYang Do Choi-
dc.contributor.authorKwan-Hwa Park-
dc.coverage.temporal20170101-20171231-
dc.date.accessioned2017-04-19T08:44:06Z-
dc.date.available2017-04-19T08:44:06Z-
dc.date.issued1992-
dc.identifier.issn0021-9258-
dc.identifier.urihttps://oak.kribb.re.kr/handle/201005/3170-
dc.description.abstractA gene encoding a new amylolytic enzyme of Bacillus licheniformis (BLMA) has been cloned, and we characterized the enzyme expressed in Escherichia coli. The genomic DNA of B. licheniformis was double-digested with EcoRI and BamHI and ligated the pBR322. The transformed E. coli was selected by its amylolytic activity, which carries the recombinant plasmid pIJ322 containing a 3.5-kilobase fragment of B. licheniformis DNA. The purified enzyme encoded by pIJ322 was capable of hydrolyzing pullulan and cyclodextrin as well as starch. It was active over a pH range of 6-8 and its optimum temperature was 50 °C. The molecular weight of the enzyme was 64,000, and the isoelectric point was 5.4. It degraded soluble starch by cleaving maltose units preferentially but did not attack α-1,6-linkage. The enzyme also hydrolyzed pullulan to panose units exclusively. In the presence of glucose, however, it transferred the panosyl moiety to glucose with the formation of α-1,6- linkage. The specificity of transferring activity is evident from the result of the maltosyl-transferring reaction which produces isopanose from maltotriose and glucose. The molecular structure of the enzyme deduced from the nucleotide sequence of the clone maintains limited similarity in the conserved regions to the other amylolytic enzymes.-
dc.publisherAmer Soc Biochemistry Molecular Biology Inc-
dc.titleCatalytic properties of the cloned amylase from Bacillus licheniformis-
dc.title.alternativeCatalytic properties of the cloned amylase from Bacillus licheniformis-
dc.typeArticle-
dc.citation.titleJournal of Biological Chemistry-
dc.citation.number31-
dc.citation.endPage22114-
dc.citation.startPage22108-
dc.citation.volume267-
dc.contributor.affiliatedAuthorDae Sil Lee-
dc.contributor.alternativeName김인철-
dc.contributor.alternativeName차재호-
dc.contributor.alternativeName김정렬-
dc.contributor.alternativeName장소영-
dc.contributor.alternativeName서병철-
dc.contributor.alternativeName정태규-
dc.contributor.alternativeName이대실-
dc.contributor.alternativeName최양도-
dc.contributor.alternativeName박관화-
dc.identifier.bibliographicCitationJournal of Biological Chemistry, vol. 267, no. 31, pp. 22108-22114-
dc.subject.keywordamylase-
dc.subject.keywordbacillus licheniformis-
dc.subject.keywordamylases-
dc.subject.keywordbacillus-
dc.subject.localAmylase-
dc.subject.localamylase-
dc.subject.localamylases-
dc.subject.localBacillus licheniformis-
dc.subject.localbacillus licheniformis-
dc.subject.localAmylase-
dc.subject.localamylase-
dc.subject.localamylases-
dc.subject.localBacillus-
dc.subject.localbacillus-
dc.description.journalClassY-
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