C-terminal end variation in Cox1.

A C-terminal amino acid sequences of Cox1 exhibit noticeable variations compared to the rather minor differences in all other mitochondrial genes examined; different variant groups can be identified. B Amino acid accessibility scale profiles indicate the potential for functional interaction sites in this region (for comparison see examples for full-length Cox1 amino acid accessibility in Supplementary Figure S4 in File S1). Position values are related to residue positions in the alignment, scores are normalized (0,1) with a higher score indicating higher accessibility.