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FIG. 6.

FIG. 6

Unrooted phylogenetic tree of the translated products of repA genes from the extended RepFIIA family. Alignments were generated using the CLUSTAL program (DNAStar). Incompatibility groups are shown in parentheses. The replication initiator protein from rolling-circle replicating plasmid pT181 (31, 32) is included as an unrelated protein for a control. Buchnera aphidicola plasmids (50, 58) and their RepA (GenBank) accession numbers are as follows: pBPp1, CAA07300; pBTs1, CAA72701; and pBTc1, CAA72709. Other plasmids and their RepA (GenBank) accession numbers are as follows: pCD1, AAC69762; pYVe227, AF102990; pNR1, CAA26168; pSU316, AAA98204; pCol1b-P9, AAA23191; pMU707, AAA98176; pMU407.1, AAA87028; pR387, AAA98310; pYVe8081, AY026194; pYVeWA, AY026195; and p307, AAB17112.