Abstract
Streptomyces sp. CS802, recently isolated from Korean soil, produced xylanase in corncob medium. An extracellular xylanase (Xyn802) was purified by a single-step gel filtration and biochemical properties were studied. It showed high activity in extremely alkaline condition with optimum pH at 12.0 and exhibited stability between pH 7.5 and 13.0. It produced xylobiose and xylotriose as the major products from xylan, suggesting its endoxylanase nature. N-terminal amino acid sequences of Xyn802 were ADRNANRD which are significantly different from the reported xylanase. The activity was enhanced by various detergents and a reducing agent and stable in various organic solvents. Xyn802 produced by utilizing corncob, an agro-waste material, might be a novel xylanase based on its peculiar biochemical characteristics, and it can be a suitable candidate for the production of xylooligosaccharides including other useful products.
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This work was supported by research fund from Chosun University, 2012.
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Jaya Ram Simkhada and Hah-Young Yoo contributed equally to this work.
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Simkhada, J.R., Yoo, HY., Choi, Y.H. et al. An Extremely Alkaline Novel Xylanase from a Newly Isolated Streptomyces Strain Cultivated in Corncob Medium. Appl Biochem Biotechnol 168, 2017–2027 (2012). https://doi.org/10.1007/s12010-012-9914-2
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DOI: https://doi.org/10.1007/s12010-012-9914-2