FIG. 3.

Phylogeny of PFK and PFP. This phylogeny shows the robust separation of PFK and PFP sequences into separate clades (demarked by the vertical bars). Monocercomonoides possesses a homolog of PFP, as do Trichomonas, Giardia, and the kinetoplastids. Trichomonas also possesses a homolog of PFK. Sequences from putative excavate taxa are presented in bold, Monocercomonoides sequences are boxed, and anaerobic eukaryotes are denoted by an asterisk. Multiple sequences from the same organism are denoted by numbers preceded by a period (.1, .2, etc.). Values separating PFP and PFK as well as embedding the Monocercomonoides sequence in a subclade of PFP are in bold.