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Selected mutagenesis of acetylcholinesterase (AChE; EC 3.1.1.7) may enable one to develop more effective scavenging agents in which AChE itself, in combination with an oxime, will complete a catalytic cycle of hydrolysis of the organophosphate by rapid conjugation followed by enhanced nucleophile-mediated hydrolysis of the phosphonyl enzyme conjugate. Through enlargement of the active site gorge of...
We show here with a congeneric series of Rp- and Sp-alkoxymethyl phosphonothiolates of known absolute stereochemistry that chiral selectivity in their reaction with acetylcholinesterase can be described in terms of discrete orientational and steric requirements. Stereoselectivity depends on acyl pocket dimensions, which govern leaving group orientation and a productive association of the phosphonyl...
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