Studies of a plasmid coding for tetracycline resistance and hydrogen sulfide production incompatible with the prophage P1

Abstract
The plasmid pIP231, determining tetracycline resistance and hydrogen sulfide production is shown to belong to incompatibility group Y and to code for a restriction and modification system. Unlike the IneY plasmids, P7 and P15B, plasmid pIP231 shows only little genetic and physical homology with P1 prophage.