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China Surfactant Detergent & Cosmetics ›› 2021, Vol. 51 ›› Issue (4): 299-305.doi: 10.3969/j.issn.1001-1803.2021.04.006

• Development and application • Previous Articles     Next Articles

Molecular dynamics simulation of protease PB92 for washing before and after substrate binding

GUO Yu-fei1(),ZHANG Jian1(),YU Wen2   

  1. 1. College of Chemistry and Chemical Engineering, Shanxi University, Taiyuan, Shanxi 030006, China
    2. Shanghai Kaimi Technology Co., Ltd., Shanghai 201808, China
  • Received:2020-06-25 Revised:2021-03-26 Online:2021-04-22 Published:2021-04-27
  • Contact: Jian ZHANG E-mail:18434390383@163.com;zhangjian@sxu.edu.cn

Abstract:

Based on the structure of protease PB92, molecular dynamics (MD) simulations were performed on protease PB92 without substrate binding and with substrate binding to study its dynamic characteristics, and the structure of protease PB92 with or without substrate binding was obtained. Properties and comparisons were made to evaluate a series of changes in the structural characteristics and stability of protease PB92 after binding to the substrate. The experimental results show that during the kinetic simulation process, the conformation of protease PB92 with substrate binding is more compact and stable than the conformation of protease PB92 without substrate binding, showing a pattern that conforms to the “induced fit” reaction. The article provides a theoretical basis and guidance for the development of protease properties and structures that are more suitable for the detergent industry in the future.

Key words: protease PB92, molecular dynamics simulation, Root Mean Square Deviation

CLC Number: 

  • TQ423