离子强度在大肠杆菌素K吸附中的作用。

Role of ionic strength in colicin K adsorption.

作者信息

Cavard D

出版信息

J Gen Microbiol. 1977 Mar;99(1):13-8. doi: 10.1099/00221287-99-1-13.

Abstract

The rate of colicin K adsorption to Escherichia coli, and consequent death of the bacteria, is progressively inhibited with increasing ionic strength of the medium. Comparison of the kinetics of colicin adsorption with the kinetics of colicin killing suggests that the lethal event provoked by colicin occurs soon after irreversible colicin adsorption. Factors, such as salts, which protect bacteria against the lethal action of colicin act by preventing colicin adsorption.

摘要

大肠杆菌素K吸附到大肠杆菌上的速率以及随之而来的细菌死亡，会随着培养基离子强度的增加而逐渐受到抑制。将大肠杆菌素吸附动力学与大肠杆菌素杀伤动力学进行比较表明，大肠杆菌素引发的致死事件在大肠杆菌素不可逆吸附后不久就会发生。诸如盐等能保护细菌免受大肠杆菌素致死作用的因素，是通过阻止大肠杆菌素吸附来发挥作用的。