Unrooted Bayesian tree of the 529 kinesins based on their motor domain ami no-acid-plus-gap-characters. Support values from each parsimony and Bayesian analysis are presented adjacent to the nodes. Support values above each branch correspond to Bayesian posterior probabilities whereas values below each branch correspond to parsimony jackknife support. In both cases the leftmost values are for the amino-acid-plus-gap-characters analyses and the rightmost values are for amino-acid-characters analyses. Bayesian posterior probabilities for the amino-acid-plus-gap-characters are also shown in bold. If a branch was unresolved in one of the other three analyses, it is indicated by "-" at the respective node. If a branch was contradicted in one of these other three analyses, it is indicated by underlined red font at the respective node with the single highest posterior probability or jackknife support value for the contradicting clade(s) shown. Ungrouped kinesins are presented on the left side of the main polytomy, with the exception of the plant-specific ungrouped family that is shown on the upper right of the tree. The Ps and Lm unresolved blocks each contain 4 and 9 sequences, respectively (See Additional files 7 and 11 these sequence IDs). Brackets denote the major eukaryotic groupings in accordance with Baldauf's nomenclature . Blue brackets indicate taxa that are from multiple groups, black brackets indicate protozoan species and red brackets are reserved for opisthokonts. Although Pt00151235 is grouped within this family by Bayesian analysis, we favor the parsimony resolution of it as a member of the Kinesin-10 family. For full names of species see Fig. 1 legend.