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Phylogenetic tree as inferred from partial acsF amino acid sequences (312 amino acids). The tree was computed using a neighbor-joining algorithm. Species with shorter sequences obtained by PCR (marked with an asterisk) were added later to the tree. Numbers above protein trees indicate bootstrap values (1,000 replicates). Roseinatronob., Roseinatronobacter; Syn., Synechocystis sp.
