Properties of pGC1, a lac plasmid orginating in Yersinia enterocolitica 842

Abstract
PGC1, a self-transmissible lac plasmid that originated in Y. enterocolitica 842, is described. This plasmid is freely transmissible between strains of Y. enterocolitica and to strains of Escherichia coli. The plasmid is transferred among E. coli strains and back to Y. enterocolitica although at a greatly reduced frequency. pGC1 has a MW of .apprx. 33.0 .times. 106, has a base composition of about 44 mol% guanine plus cytosine, and is fi [lack of inhibition of conjugational transfer mediated by plasmid X].