FIGURE 2.

Phylogenetic relationship of PtEG16-like proteins in GH16 and census among plant proteomes. A, phylogenetic relationship of EG16s to XTH gene products and licheninases. XTH gene product groups are according to Ref. 11. The confidence at each node in the Bayesian tree is given in posterior probabilities from the Bayesian analysis multiplied by 100. At selected nodes, the bootstrap values from maximum likelihood calculations are indicated in parentheses. A. thaliana, O. sativa, and P. patens identifiers are according to Refs. 9 and 82). Specific EG16 sequence identifiers can be found in supplemental Table 2, and gymnosperm transcripts in Group III-A are denoted by their accession number at TIGR (24). B, occurrence of XTH Group, Group II, Group III-A, Group III-B, and PtEG16-like gene products (hatched) in selected plant in silico proteomes. The number of PtEG16-like members in charophycean green algal proteomes is presently unknown in the absence of genome data; however, corresponding transcripts have been tentatively identified (see “Results”).