FIG. 5.
Dot plot comparisons between segments of pSK41 (x axes) and the small RC plasmids (y axes), pSK108 (A) and pSK89 (B). Dots indicate 20-nt stretches containing at least 17 identities. The genetic organization of the plasmids is illustrated beside the relevant axes. The extents and directions of genes are indicated by arrowed boxes; homologous genes are indicated by equivalent shading. The locations of the SSOA sequences are denoted by open boxes, and the positions of the putative replication nick sites are indicated by an arrow. The locations of the flanking IS257 elements in pSK41 are also shown. The segment of pSK108 orf334 not represented in the comparable pSK41 sequence is indicated by hatching. Sequence numbering for pSK89 and pSK108 starts at the first nucleotide their replication-initiation genes, rep and orf334, respectively. The pSK108 (22) and pSK89 (25) sequences are from the GenBank entries U15783 and M37889, respectively.