FIG. 7.

Comparison of res-containing regions of Tn4656-related transposons. Sequence data were obtained in this study (AB062597) and from references 1, 7, 16, 23, and 30. The numbers on the right are the base positions; the upstream KpnI site (Fig. 3) was defined as position 1. The dots represent nucleotides identical to nucleotides of Tn4656, whereas the dashes represent gaps that result in maximum matching. Three putative resolvase-binding sites are enclosed in boxes, and the putative crossover point based on the data for Tn1722 (22) is indicated by a vertical arrow. Note that Tn1404 and Tn4653 are defective in cointegrate resolution because of a lack of crossover points (23, 30). The predicted start of the Tn4656 tnpR gene is indicated by a horizontal arrow, and the predicted promoter and ribosome-binding (SD) sequences for the tnpR gene are overlined. The ATG codon of Tn4656 mentioned in the text and the NcoI site are underlined.