Phylogenetic analysis of P-type II amino acid sequences of various taxonomic origins. P-type II ATPase genes, obtained from arbuscular mycorrhizal fungi, were compared with previously published sequences belonging to all P-Type II sub-families. The main P-type II sub-families are circled. The placement of AMF sequences within the tree is shown by bold circles. Branches in bold had bootstrap support above 90 for both neighbour-joining and minimum evolution genetic distances. Scale bar represents 0.1 amino acid changes per site.