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Phylogenetic relationships among the reference cbhI-encoded protein sequences, environmental clones, and best BLAST P matches. The data set included 178 characters. Shown is 1 of 411 most-parsimonious trees. Bootstrap frequencies of >50% are shown at supported branches. Asterisks indicate branches that collapse in strict consensus. The tree is rooted with an outgroup of GH7 endocellulases.
