Function of different amino acid residues in the reaction mechanism of gentisate 1,2-dioxygenases deduced from the analysis of mutants of the salicylate 1,2-dioxygenase from Pseudaminobacter salicylatoxidans.

Abstract excerpt

The genome of the α-proteobacterium Pseudaminobacter salicylatoxidans codes for a ferrous iron containing ring-fission dioxygenase which catalyzes the 1,2-cleavage of (substituted) salicylate(s), gentisate (2,5-dihydroxybenzoate), and 1-hydroxy-2-naphthoate. Sequence alignments suggested that the "salicylate 1,2-dioxygenase" (SDO) from this strain is homologous to gentisate 1,2-dioxygenases found in bacteria,...

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