Figure 1

Phylogenetic trees corresponding to animal cullin sequences. The figure corresponds to the NJ tree, but the MP and ML results were topologically so similar that they are also included here. Numbers in the branches refer to bootstrap support, in percentages (order: NJ/MP/ML). Numbers in brackets refer to the number of sequences within each group. Five genes (red) have been found in all animal groups. Two other (orange) are vertebrate-specific or Drosophila-specific. Details of the sequences can be found in Additional File 3.