Figure 3

Comparison of vacuolar/archaeal ATPase A subunit and small subunit ribosomal RNA phylogenies. The phylogeny depicted in (A) was calculated from the extein portions of the genes only; (B) was calculated from small subunit ribosomal RNAs. The trees were calculated as unrooted, but are depicted as rooted using the eukaryotes as an outgroup to the Archaea (A), or the Crenarchaeota as an outgroup to the Euryarchaeota (B). Numbers give bootstrap values calculated from 100 bootstrapped samples analyzed using parsimony analysis. Values are only given for groups with more than 50% support. Asterisks denote branches that in the maximum likelihood evaluation were not at least 3 or 2 times larger, respectively, than their estimated standard error. All other branches were at least three times larger than their standard deviation. See experimental procedures for further details on the phylogenetic reconstruction methods used. Species whose A-subunit contains an intein are indicated by arrows.