Distance tree from an alignment of the proteins by clustalw (Neighbor joining method) showing the position of Amyrel relative to Amy. The Amyrel branch is the bold line. The tree was rooted with a Streptomycete (6). Numbers along branches are bootstrap values (1,000 replicates). [GenBank accession numbers: S. limosus, M18244; A. merus (mosquito), U01210; A. gambiae, L04753; D. virilis, U02029; D. pseudoobscura, X76240; D. melanogaster, X04569; O. nubilalis (moth), U04223; H. sapiens, P04746; M. musculus, P00688; and G. gallus, U63411.]