Constitutive display of Candida antarctica lipase B on the cell surface of Aspergillus niger and regulation of its fermentation.

Yuanfeng LI; Shen Jin; Denggang Wang; Shuli Liang; Suiping Zheng; Ying Lin

Return

Constitutive display of Candida antarctica lipase B on the cell surface of Aspergillus niger and regulation of its fermentation.

Author: Yuanfeng LI ¹ ; Shen JIN ¹ ; Denggang WANG ¹ ; Shuli LIANG ¹ ; Suiping ZHENG ¹ ; Ying LIN ¹
Author Information

1. Guangdong Key Laboratory of Fermentation and Enzyme Engineering, School of Biology and Biological Engineering, South China University of Technology, Guangzhou 510006, Guangdong, China.
Publication Type:Journal Article
Keywords: Aspergillus niger; cell surface display; constitutive promoter; lipase
From: Chinese Journal of Biotechnology 2018;34(7):1189-1196
CountryChina
Language:Chinese
Abstract: Displaying Candida antarctica lipase B (CALB) on the cell surface of Aspergillus niger is effectively applied for the industries of food, cosmetics, pharmaceutical and so on. Displaying CALB using induced promoter of glucoamylase on the cell surface of A. niger SH-1 has some problems such as inhibiting its expression under high concentration of glucose, mycelium cleavage and decreasing enzyme activity in the later period of fermentation process. Displaying CALB manipulated by constitutive promoter from glyceraldehyde-3-phosphate dehydrogenase instead of glucoamylase on the cell surface of A. niger SH-1, called AN-GpdA, could solve the above problems effectively. Furthermore, it can not only use glucose, but also xylose as a sole carbon source. Enzyme activity of AN-GpdA using xylose for fermentation reached 1 100.28 U/g of dry cell. We also used lignocellulose such as the hydrolysate of bagasse for fermentation with good performance. The result would provide a novel strategy for the utilization of bagasse.