Neighbor-Joining Tree for Dayhoff PAM Distances among a Representative Set of Complete MutS/MSH Protein Sequences.
Gaps and regions of ambiguous alignment were excluded from the analysis. Numbers above each branch represent the number of times the branch was found in 100 bootstrap replicas. The Gram-positive Bacillus subtilis and Streptococcus pneumoniae MutS protein sequences were used as an outgroup. All eukaryotic MutS homologs are encoded by the nuclear genome except for the mitochondrially encoded SgMSH1. At, A. thaliana; Av, Azotobacter vinelandii; Bs, B. subtilis; Ec, E. coli; Hi, Haemophilus influenzae; Hs, H. sapiens; Rp, Rickettsia prowazekii; Sc, S. cerevisiae; Sg, Sarcophytom glaucum; Sp (SW14), Saccharomyces pombe; Sp (MutS), S. pneumoniae; Ss, Synechocystis sp; Ta, Thermus aquaticus; Xl, Xenopus leavis; Zm, Z. mays.