3.13.1.4 | 3-sulfinopropanoyl-CoA + H2O = propanoyl-CoA + sulfite |
reaction mechanism, residues Arg84, Asp88 and Gln246 side chains and the isoalloxazine ring of FAD define the enzymatic environment for the desulfination reaction. FAD is not involved in electron transfer during the reaction, essential role of Arg84 in catalysis. The enzymatic reaction might progress with hydrogen-bond formation and charge transfer between the guanidinium cation of Arg84 and 3-sulfinopropanoyl-CoA, which would favour nucleophilic attack of a water molecule on the S atom of the sulfino group |
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