Cloning, characterization and phylogenetic relationships of stxI, a endoxylanase-encoding gene from Streptomyces thermonitrificans NTU-88

被引：17

作者：

Cheng, Hsueh-Ling

Wang, Pei-Min

Chen, Yu-Chi ^{[1
]}

Yang, Shang-Shyng

Chen, Yo-Chia

机构：

[1] Natl Pingtung Univ Sci & Technol, Inst Biotechnol, Pingtung, Taiwan

[2] Natl Pingtung Univ Sci & Technol, Dept Food Sci, Pingtung, Taiwan

[3] Natl Taiwan Univ, Dept Biochem Sci & Technol, Taipei 10764, Taiwan

来源：

BIORESOURCE TECHNOLOGY | 2008年 / 99卷 / 01期

关键词：

Streptomyces thermonitrificans; xylanase gene; phylogenetic analysis; glycosyl hydrolase family 11;

D O I：

10.1016/j.biortech.2006.11.023

中图分类号：

S2 [农业工程];

学科分类号：

0828 [农业工程];

摘要：

A thermostable xylanase gene (stxl) obtained from Streptomyces thermonitrificans NTU-88 on domain analysis revealed an N-terminal catalytic domain featuring homology to a known xylanase within the glycoside hydrolase family 11. Recombinant STXI retained more than 60% of its activity following its incubation for at 60 degrees C for 24 h. These characteristics were close to thermophile and mesophile Streptomyces strains. The main hydrolysis products of xylan degraded by STXI included large xylooligosaccharide fragments. These results indicated that STXI was a typical endoxylanase. As regards the phylogenetic relationships of GH11, STXI and the other xylanase deriving from Streptomyces were included in a subgroup of the aerobic bacterial group. This result implied that the evolutionary relationships between the various xylanases deriving from Streptomyces strains were convergent. (c) 2006 Elsevier Ltd. All rights reserved.

引用

页码：227 / 231

页数：5

共 16 条

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