Fig. 1.

Map of the sprE region. Numbers below the map refer to kilobase pairs of sequence. The sites of HimarEm2 and Tn4351 insertions are indicated by open triangles and closed circles, respectively. The orientations of HimarEm2 insertions are indicated by the direction in which the triangles are pointing. As drawn, FJ149 and FJ160 both have inverted repeat IR1 on the right side of the transposons. The sprE mutants FJ149 and FJ160 were derived from wild-type strain FJ1, and the sprE mutant CJ986 was derived from wild-type strain MM101. The region of DNA carried by the complementing plasmid pNap2 is indicated beneath the map.