Fig. 7. Phylogenetic analyses of relationships based on comparisons of complete amino acid sequences representing 21 different sarco(endo)plasmic reticulum Ca²⁺-ATPases (SERCAs). The analyses include the SERCA from Drosophila melanogaster, the SERCAs from other invertebrates as well as the three different vertebrate isoforms from representative species. (A) Phylogram of the most parsimonius unrooted PHYLO_WIN tree recovered (1369 steps), where horizontal branch lengths are proportional to the amount of divergence along a lineage. The topology of this tree was identical to the Neighbor Joining tree (data not shown). In Panels A and B SERCAs are depicted as `ATA' followed by the type number (for vertebrate sequences) and the abbreviation of the species. (B) Unrooted cladogram illustrating the pattern of relationships. This tree was recovered following Bootstrap analysis (5 replicates). The number of each node indicates the percentage recovery for the node during resampling. Species code: Drosophila, Dm; blood fluke, Sm; yesso scallop, Py; crayfish, Pc; human, Hs; dog, Cf; cat, Fc; chicken, Gg; blue marlin, Mn; mouse, Mm; rabbit, Oc; edible frog, Re; Wistar rat, Rn; pig, Ss.

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