The ColE1-like plasmids of Rahnella form a sub-family. Phylogenetic trees were constructed based on RNA II (A) or the mrs (B). In both trees most ColE1-like plasmids isolated from Rahnella (shown in bold letters) formed a cluster with pECA1039, a plasmid of Pectobacterium artrosepticum. (C) Alignment of the multimer resolution sites. The ArgR, FIS, XerC and XerD binding sites are boxed and conserved A-T stretches responsible for DNA bending are underlined. The -10 and -35 boxes of the ColE1 P
promoter are underlined and the start of the Rcd coding region is indicated by an arrow. Nucleotides conserved in at least 50% of the sequences are shown in bold and invariant sites are marked with an asterisk.