Author:
Willetts N. S.,Finnegan D. J.
Abstract
SUMMARYThe interrelationship between an F prime and an F-like or I-like R factor was studied inEscherichia coliK 12 strains carrying both. The donorability of such strains suggested that these plasmids were transferred independently by their own transfer systems. Plaque formation by several male- and female-specific phage was tested; the inhibition by Flacof several female-specific phage was not affected by an F-like R factor. Neither did an R factor affect the incompatibility between Flacand Fhis. However, the surface exclusion characteristic of Flacwas lost in the presence of an F-like R factor. This is probably closely related to the simultaneous loss of donorability, the F-pilus, and the f+antigen: all may be the result of the inhibition by an R product of the formation or activity of a single F product.
Subject
Genetics,General Medicine
Cited by
66 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献