Crystal structure of 4-oxalocrotonate tautomerase inactivated by 2-oxo-3-pentynoate at 2.4 A resolution: analysis and implications for the mechanism of inactivation and catalysis.

Abstract

The crystal structure of 4-oxalocrotonate tautomerase (4-OT) inactivated by the active site-directed irreversible inhibitor 2-oxo-3-pentynoate (2-OP) has been determined to 2.4 A resolution. The structure of the enzyme covalently modified at Pro-1 by the resulting 2-oxo-3-pentenoate adduct is nearly superimposable on that of the free enzyme and confirms… (More)

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