Fig 8.

Phylogenetic trees of single-stranded DNA annealing proteins and cognate exonucleases encoded by gene pairs found in sequenced microbial, plasmid, and bacteriophage genomes. (A) Recombination proteins containing a RecT domain. (B) Exonucleases containing a YqaJ domain. Label colors indicate orders of bacterial strains in which each protein was found (inner wheel). Outer color strips indicate the element carrying each protein (outer wheel). Filled and open circles indicate the presence and absence, respectively, of Gam. Relevant elements are indicated by arrows. Bootstrap values of >80 are indicated.