FIG. 6.

Phylogenetic analysis of bacteriophage putative and actual large-subunit terminases. The sequences were aligned with ClustalW and then analyzed with TreeCon, with the putative terminase from Methanobacterium phage psiM2 (GenBank accession no. AF65411) used to root the tree. The symbol at the upper left indicates 10% change in sequence. Shown are phi-105 orf22 (AB016282), phi-C31 gp33 (AJ006589), A2 orf5 (X97563), hypothetical Rhodobacter (AF010496) and E. coli (YMFN_ECOLI; P75978) proteins, D29 gp13 (AF022214), sk1 (AF011378), SPP1 (AB023396), P21 (P36693), lambda (P03708), 933W (AAD25456.1), DT1 (AAD21880.1), P2 (AAD03269.1), P008 (AAC63033.1), 186 (AAC34148.1), bIL170 (AAC27181.1), N15 gp2 (AAC19038.1), HP1 (P51718), phi41 (AAB41467.1), TM4 gp4 (AAD17572.1), phiCTX orf2 (BAA36228.1), and PBSX (P39786).