Title : Halogen substituents enhance oxime nucleophilicity for reactivation of cholinesterases inhibited by nerve agents.

Pub. Date : 2022 Aug 5

PMID : 35526478






5 Functional Relationships(s)
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1 Compared to non-halogenated oximes, halogenated oximes showed lower pKa of the oxime group (fluorinated < chlorinated < non-halogenated) along with higher level of oximate anion formation at the physiological pH, and had a higher binding affinity of both AChE and BChE. Oximes acetylcholinesterase (Cartwright blood group) Homo sapiens
2 Compared to non-halogenated oximes, halogenated oximes showed lower pKa of the oxime group (fluorinated < chlorinated < non-halogenated) along with higher level of oximate anion formation at the physiological pH, and had a higher binding affinity of both AChE and BChE. Oximes acetylcholinesterase (Cartwright blood group) Homo sapiens
3 Compared to non-halogenated oximes, halogenated oximes showed lower pKa of the oxime group (fluorinated < chlorinated < non-halogenated) along with higher level of oximate anion formation at the physiological pH, and had a higher binding affinity of both AChE and BChE. Oximes acetylcholinesterase (Cartwright blood group) Homo sapiens
4 The advantage of halogen substituents in the stabilization of oxime in a position optimal for in-line nucleophilic attack were confirmed by extensive molecular modelling of pre-reactivation complexes between the analogue oximes and phosphorylated AChE and BChE. Oximes acetylcholinesterase (Cartwright blood group) Homo sapiens
5 The advantage of halogen substituents in the stabilization of oxime in a position optimal for in-line nucleophilic attack were confirmed by extensive molecular modelling of pre-reactivation complexes between the analogue oximes and phosphorylated AChE and BChE. Oximes acetylcholinesterase (Cartwright blood group) Homo sapiens