Proposal for the Mechanism of Action of Urocanase. Inference from the Inhibition by 2-Methylurocanate
1987 ◽
Vol 42
(4)
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pp. 349-352
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Keyword(s):
Incubation of urocanase with 2-methylurocanate leads, after an initial normal reaction, to a time dependent inactivation of the enzyme. It is suggested that a tautomeric form (1) of the product, 2-methyl-imidazolone propionate, is the actual inhibitor. On the basis of these and of published experimental data a novel mechanism is proposed for the urocanase reaction. The crucial and initial step is the electrophilic addition of enzyme-bound NAD to the 2-position of the imidazole nucleus of urocanate.
2006 ◽
Vol 129
(1)
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pp. 211-215
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Keyword(s):
2007 ◽
Vol 21
(19)
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pp. 1239-1252
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2007 ◽
Vol 20
(12)
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pp. 1778-1786
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2019 ◽
Vol 47
(7)
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pp. 732-742
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2014 ◽
Vol 626
◽
pp. 365-371
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Keyword(s):