Fig. 2.

 Phylogeny of Bilateria small heat shock proteins (sHsps) according to Bayesian inference. A hidden Markov model was built of the 10 human sHsps and used to search the nonredundant protein database and align the resulting proteins. Bayesian inference phylogenetic analysis was conducted to ascertain the evolutionary relationships among these sHsps. Support values in the form of Bayesian posterior probabilities are shown next to each node. The tree is midpoint rooted, consistent with using the Arthropod and Nematode sHsps as out-groups. Clades with triangles have been collapsed for brevity; however, the number of proteins in that clade is indicated in parentheses. Relevant taxonomic groupings, gene names, and GenInfo identifiers are supplied where relevant. See text for additional details