Mode of Transposition and Expression of 16S rRNA Methyltransferase Gene rmtC Accompanied by IS Ecp1

Abstract
A newly identified 16S rRNA methyltransferase gene, rmtC , was accompanied by an IS Ecp1 element at its 5′ end. This IS Ecp1 element, which contained a transposase gene, tnpA , provided a promoter activity for expression of the adjacent rmtC ; and this structure enabled the rmtC gene to be transposed onto another plasmid in Escherichia coli .