DC Field | Value | Language |
---|---|---|
dc.contributor.author | Temuujin, Uyangaa | ko |
dc.contributor.author | Chi, Won-Jae | ko |
dc.contributor.author | Chang, YongKeun | ko |
dc.contributor.author | Hong, Soon-Kwang | ko |
dc.date.accessioned | 2013-03-12T02:18:26Z | - |
dc.date.available | 2013-03-12T02:18:26Z | - |
dc.date.created | 2012-03-08 | - |
dc.date.created | 2012-03-08 | - |
dc.date.issued | 2012-01 | - |
dc.identifier.citation | JOURNAL OF BACTERIOLOGY, v.194, no.1, pp.142 - 149 | - |
dc.identifier.issn | 0021-9193 | - |
dc.identifier.uri | http://hdl.handle.net/10203/101071 | - |
dc.description.abstract | Streptomyces coelicolor can degrade agar, the main cell wall component of red macroalgae, for growth. To constitute a crucial carbon source for bacterial growth, the alternating alpha-(1,3) and beta-(1,4) linkages between the 3,6-anhydro-L-galactoses and D-galactoses of agar must be hydrolyzed by alpha/beta-agarases. In S. coelicolor, DagA was confirmed to be an endo-type beta-agarase that degrades agar into neoagarotetraose and neoagarohexaose. Genomic sequencing data of S. coelicolor revealed that Sco3487, annotated as a putative hydrolase, has high similarity to the glycoside hydrolase (GH) GH50 beta-agarases. Sco3487 encodes a primary translation product (88.5 kDa) of 798 amino acids, including a 45-amino-acid signal peptide. The sco3487 gene was cloned and expressed under the control of the ermE promoter in Streptomyces lividans TK24. beta-Agarase activity was detected in transformant culture broth using the artificial chromogenic substrate p-nitrophenyl-beta-D-galactopyranoside. Mature Sco3487 (83.9 kDa) was purified 52-fold with a yield of 66% from the culture broth. The optimum pH and temperature for Sco3487 activity were 7.0 and 40 degrees C, respectively. The K(m) and V(max) for agarose were 4.87 mg/ml (4 x 10(-5) M) and 10.75 U/mg, respectively. Sco3487 did not require metal ions for its activity, but severe inhibition by Mn(2+) and Cu(2+) was observed. Thin-layer chromatography analysis, matrix-assisted laser desorption ionization-time of flight mass spectrometry, and Fourier transform-nuclear magnetic resonance spectrometry of the Sco3487 hydrolysis products revealed that Sco3487 is both an exo- and endo-type beta-agarase that degrades agarose, neoagarotetraose, and neoagarohexaose into neoagarobiose. | - |
dc.language | English | - |
dc.publisher | AMER SOC MICROBIOLOGY | - |
dc.subject | AGARIVORANS-ALBUS YKW-34 | - |
dc.subject | ALPHA-AGARASE | - |
dc.subject | PSEUDOMONAS-ATLANTICA | - |
dc.subject | ENZYMATIC-PROPERTIES | - |
dc.subject | AGAROSE OLIGOMERS | - |
dc.subject | PURIFICATION | - |
dc.subject | EXPRESSION | - |
dc.subject | GENE | - |
dc.subject | CLONING | - |
dc.subject | NUCLEOTIDE | - |
dc.title | Identification and Biochemical Characterization of Sco3487 from Streptomyces coelicolor A3(2), an Exo- and Endo-Type beta-Agarase-Producing Neoagarobiose | - |
dc.type | Article | - |
dc.identifier.wosid | 000298350800016 | - |
dc.identifier.scopusid | 2-s2.0-84855869668 | - |
dc.type.rims | ART | - |
dc.citation.volume | 194 | - |
dc.citation.issue | 1 | - |
dc.citation.beginningpage | 142 | - |
dc.citation.endingpage | 149 | - |
dc.citation.publicationname | JOURNAL OF BACTERIOLOGY | - |
dc.identifier.doi | 10.1128/JB.05978-11 | - |
dc.contributor.localauthor | Chang, YongKeun | - |
dc.contributor.nonIdAuthor | Temuujin, Uyangaa | - |
dc.contributor.nonIdAuthor | Chi, Won-Jae | - |
dc.contributor.nonIdAuthor | Hong, Soon-Kwang | - |
dc.type.journalArticle | Article | - |
dc.subject.keywordPlus | AGARIVORANS-ALBUS YKW-34 | - |
dc.subject.keywordPlus | ALPHA-AGARASE | - |
dc.subject.keywordPlus | PSEUDOMONAS-ATLANTICA | - |
dc.subject.keywordPlus | ENZYMATIC-PROPERTIES | - |
dc.subject.keywordPlus | AGAROSE OLIGOMERS | - |
dc.subject.keywordPlus | PURIFICATION | - |
dc.subject.keywordPlus | EXPRESSION | - |
dc.subject.keywordPlus | GENE | - |
dc.subject.keywordPlus | CLONING | - |
dc.subject.keywordPlus | NUCLEOTIDE | - |
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