[Complementation analysis of derepressed mutants of F-like plasmids of Escherichia coli]. / Komplementatsionnyi analiz derepressirovannykh mutantov F-podobnykh plazmid Escherichia coli.

ABSTRACT

Complementation analysis of a number of conjugative transfer functions was performed in derepressed (drd) mutants of E. coli F-like plasmids. The major part of double plasmid complexes investigated has revealed the formation of complementation transfer inhibitor of Fin V-type, or less frequently--the formation of Fin U-type inhibitor. An additional complementation analysis of drd plasmids defective at Fin V region genes has demonstrated at least three genes (denoted A, B, C) in the structure of this region.