FIG. 10.

Phylogenetic tree of archaetidylinositol synthase and archaetidylglycerol synthase constructed by the maximum-likelihood method. The sequence is indicated by the source name and GI number from the National Center for Biotechnology Information. The presence or absence of archaetidylinositol (AI) or archaetidylglycerol (AG)/archaetidylglycerophosphate (AGP) in each species is indicated by a symbol, “+” or “−,” after the source name and GI number. The symbol “?” indicates that the lipid composition has not been reported for the species. For the characters “A,” “B,” “C,” and “X,” see reference 17. PIS, phosphatidylinositol synthase; PGS, phosphatidyglycerol synthase; AIS, archaetidylinositol synthase; AGS, archaetidylglycerol synthase. (Reprinted from reference 17 by permission of the publisher.)