Partial sequences of the ParB protein of P1 ParB family members. The regions are homologs of P1 parB residues 281 to 309. The shaded sequences are identical in all species. Where known, the maximum extents of the DRSs are underlined. The BoxB2 sequences are identical to BoxB1 in all cases except for pWR100 (BoxB1, TCGCCA; BoxB2, TCGCCT) and P7 (BoxB1, GTCCCG; BoxB2, TTCCCA).