Biochemical and Molecular Characterization of Secreted α-Xylosidase from Aspergillus niger

被引:23
|
作者
Scott-Craig, John S.
Borrusch, Melissa S.
Banerjee, Goutami
Harvey, Christopher M.
Walton, Jonathan D. [1 ]
机构
[1] Michigan State Univ, Dept Energy, Plant Res Lab, E Lansing, MI 48824 USA
关键词
XYLOGLUCAN OLIGOSACCHARIDES; DEGRADING ENZYMES; CLASSIFICATION; DECONSTRUCTION; PURIFICATION; MIXTURES; PROTEINS; REVEALS; CLONING;
D O I
10.1074/jbc.M111.307397
中图分类号
Q5 [生物化学]; Q7 [分子生物学];
学科分类号
071010 ; 081704 ;
摘要
Background: Microbial secreted alpha-xylosidases are rare. Results: An alpha-xylosidase of Aspergillus niger (AxlA) was purified and expressed in Pichia pastoris. Conclusion: Native and recombinant AxlA act on pNP alpha X and isoprimeverose. Together with beta-glucosidase, AxlA degrades xyloglucan (XG) heptasaccharide. Together with xyloglucanase, beta-galactosidase, and beta-glucosidase, it degrades tamarind XG. Significance: The biochemical function of AxlA is established.
引用
收藏
页码:42848 / 42854
页数:7
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