Figure 3

Bayesian phylogenetic analyses of cell cycle proteins. (a) Phylogeny of cyclin A, B, D and E proteins. Tree shown (consensus of 951 best trees) is based on an alignment of 189 amino acids. Parameter means: α = 1.78, pI = 0.05 and lnL = -16804.13. (b) Phylogeny of CDK proteins. Tree shown (consensus of 951 best trees) is based on an alignment of 285 amino acids. Parameter means: α = 1.22, pI = 0.12 and lnL = -12586.10. (c) Phylogeny of PLK proteins. Tree shown (consensus of 931 best trees) is based on an alignment of 250 amino acids. Parameter means: α = 1.33, pI = 0.1 and lnL = -10286.85. Blue, red and green names indicate animals, fungi and plants, respectively. Thickened branches refer to posterior probabilities from 0.95 to 1.0. Protein identifiers for D. pulex sequences (in bold) are in Additional File 2.