Complete Sequence of pSAM7, an IncX4 Plasmid Carrying a NovelblaCTX-M-14bTransposition Unit Isolated from Escherichia coli and Enterobacter cloacae from Cattle

Abstract

ABSTRACTThe same plasmid carryingblaCTX-M-14bwas identified from anEscherichia coliisolate and anEnterobacter cloacaeisolate collected from cattle in the United Kingdom by complete plasmid sequencing. This 35,341-bp plasmid, pSAM7, had an IncX4 backbone that is 99% identical to that of pJIE143 from a human isolate in Australia. PCR screening identified pSAM7-like plasmids in three otherE. coliisolates of different multilocus sequence types isolated from cattle on different farms in the United Kingdom.