Expression, Purification, and Characteristic of Tibetan Sheep Breast Lysozyme UsingExpression System

Asian-Australasian Journal of Animal Sciences

卷:27

Mingfeng Jiang¹  Yong Wang¹  Jianbo Li¹ 

[1]Key Laboratory of Sichuan Province for Qinghai-Tibetan Plateau Animal Genetic Resource Reservation and Exploitation, Chengdu 610041, China

关键词: Clone;    Lysozyme;    Purification;    Secretory Expression;    Tibetan Sheep;   

DOI  :  10.5713/ajas.2013.13529

来源: DOAJ

【 摘 要 】

A lysozyme gene from breast of Tibetan sheep was successfully expressed by secretion using a-factor signal sequence in the methylotrophic yeast, Pichia pastoris GS115. An expression yield and specific activity greater than 500 mg/L and 4,000 U/mg was obtained. Results at optimal pH and temperature showed recombinant lysozyme has higher lytic activity at pH 6.5 and 45°C. This study demonstrates the successful expression of recombinant lysozyme using the eukaryotic host organism P. pastoris paving the way for protein engineering. Additionally, this study shows the feasibility of subsequent industrial manufacture of the enzyme with this expression system together with a high purity scheme for easy high-yield purification.

【 授权许可】

Unknown