FIG. 2.

Homology of the Gtt1 protein to other fungal transporters. A distance phylogenetic tree was obtained as described in Materials and Methods (parsimony methods gave very similar results). Sequences were aligned by using the CLUSTAL W algorithm (17), and a distance tree of 100 bootstrapped data sets was generated by using the PROTDIST program and the neighbor-joining method (42). Each number on the tree represents the number of times the group located to the right occurred in 100 different trees (12). Branches not supported (<90) were collapsed. Designations in parentheses are GenBank accession numbers. Percentages in parentheses indicate the percent similarity to the Gtt1 protein. A and B indicate groups.