Effect of Glycosylation and Additional Domains on the Thermostability of a Family 10 Xylanase Produced by Thermopolyspora flexuosa

被引:44
作者
Anbarasan, Sasikala [1 ]
Janis, Janne [2 ]
Paloheimo, Marja [3 ]
Laitaoja, Mikko [2 ]
Vuolanto, Minna [3 ]
Karimaki, Johanna [1 ]
Vainiotalo, Pirjo [2 ]
Leisola, Matti [1 ]
Turunen, Ossi [1 ]
机构
[1] Aalto Univ, Dept Biotechnol & Chem Technol, Espoo 02015, Finland
[2] Univ Joensuu, Dept Chem, FIN-80101 Joensuu, Finland
[3] Roal Oy, Rajamaki 05201, Finland
基金
芬兰科学院;
关键词
CARBOHYDRATE-BINDING MODULE; NONOMURAEA-FLEXUOSA; THERMOTOGA-MARITIMA; CATALYTIC-ACTIVITY; STABILITY; INCREASES; CLONING; FUSION; THERMOPHILUM; PURIFICATION;
D O I
10.1128/AEM.00357-09
中图分类号
Q81 [生物工程学(生物技术)]; Q93 [微生物学];
学科分类号
071005 ; 0836 ; 090102 ; 100705 ;
摘要
The effects of different structural features on the thermostability of Thermopolyspora flexuosa xylanase XYN10A were investigated. A C-terminal carbohydrate binding module had only a slight effect, whereas a polyhistidine tag increased the thermostability of XYN10A xylanase. In contrast, glycosylation at Asn26, located in an exposed loop, decreased the thermostability of the xylanase. The presence of a substrate increased stability mainly at low pH.
引用
收藏
页码:356 / 360
页数:5
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