Phylogenetic tree of the WHAMM proteins. The phylogenetic tree of the WHAMM protein family was calculated with MrBayes from the multiple sequence alignment of the full-length WHAMM sequences excluding the low-complexity insertion of the WMD domain. Posterior probabilities are only given for some major branches because for lack of space. The unrooted tree was drawn with FigTree and branches were coloured according to class and taxonomic distributions. For the extended tree including all posterior probability values see Additional file 1.