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자료유형
학술저널
저자정보
Lee, Yong-Seok (Department of Biotechnology, Dong-a University) Zhou, Y. (Department of Biotechnology, Dong-a University) Park, In-Hye (Department of Biotechnology, Dong-a University) Chandra, Muni Ramanna Gari Subhosh (Department of Biotechnology, Dong-a University) Ahn, Soon-Cheol (School of Medicine, Pusan National University) Choi, Yong-Lark (Department of Biotechnology, Dong-a University)
저널정보
한국응용생명화학회 Applied Biological Chemistry Applied Biological Chemistry 제53권 제1호
발행연도
2010.1
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1 - 7 (7page)

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A bacterium, ZY-08 that produced extracellular mannanase, was isolated and identified as Paenibacillus illinoisensis (P. illinoisensis) on the basis of 16S rDNA phylogenetic analysis. The enzyme was purified to apparent homogeneity by ultrafiltration, DEAE-Sepharose chromatography, and Sephadex G-50 chromatography procedures. The $\beta$-mannanase was purified 3.5 fold to homogeneity with a final recovery of 22% and specificity of 9.3 U/mg protein as judged by SDS-polyacrylamide gel electrophoresis. The molecular mass was about 60 kDa. It was active at $60^{\circ}C$ and pH 6.0 and it's retained about 40% of activity at $70^{\circ}C$, with a broad pH range of 3.0-6.0. The mannanase was highly specific towards glucomannan and galactomannan, but exhibited very low activity towards starch, carboxy-methyl cellulose, and birchwood xylan. Result of thin-layer chromatography analysis showed that the enzyme produced various kinds of oligosacchrides. These unique properties of the thermostable mannanase and broad substrate specificity (low activity towards cellulosic substrates) from P. illinoisensis ZY-08 make this enzyme attractive for biotechnological applications.

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