Genetic map location of the Escherichia coli dnaG gene

Abstract

The dnaG locus is one of at least four loci whose gene products are needed for the elongation reactions of deoxyribonucleic acid replication. The dnaG locus of E. coli K 12 has been mapped at about 60 min on the genetic map by three factor crosses using P1 transduction. In crosses selecting for dnaG+, the cotransduction frequency with the tolC marker is 15% and that with the uxaC marker is 49%. The gene order is tolC dnaG uxaC.