Fig. 2
From: MHC class I evolution; from Northern pike to salmonids
Phylogeny of deduced U lineage alpha 1 domain amino acid sequences. Lineages are shown using roman numbers as defined by Grimholt et al. [8]. Strongly supported clades are shown using coloured boxes. The tree with the highest log likelihood (− 3618,84) is shown. The percentage of trees in which the associated taxa clustered together is shown next to the branches. A discrete Gamma distribution was used to model evolutionary rate differences among sites (5 categories (+ G, parameter = 1,5774)). The tree is drawn to scale, with branch lengths measured in the number of substitutions per site. The analysis involved 59 amino acid sequences. There were a total of 85 positions in the final dataset. Atlantic salmon sequence references not present in Additional file 4 are as follows: UBA*0101 AAN75113, UBA*0201 AF504023, UBA*0301 AAN75116.1, UBA*0701 AAN75109, UBA*0801 AAN75115, UBA*0901 AAN75119, UBA*1001 AAN75118, UBA1101 AF504017.1, UBA*1401 AAN75110, UBA3301 DQ091795.1