Crystal structures of oxime-bound fenamiphos-acetylcholinesterases: Reactivation involving flipping of the His447 ring to form a reactive Glu334–His447–oxime triad
we report the intermolecular interactions between Mus musculus acetylcholinesterase inhibited by the insecticide fenamiphos (fep-mAChE) and HI-6 or Ortho-7 revealed by a combination of crystallography and kinetics. The crystal structures of the two oxime-bound fep-mAChE complexes show that both oximes interact with the peripheral anionic site involving different conformations of Trp286 and different
Enantioselective interaction with acetylcholinesterase of an organophosphate insecticide fenamiphos
作者:Cui Wang、Na Zhang、Ling Li、Quan Zhang、Meirong Zhao、Weiping Liu
DOI:10.1002/chir.20800
日期:——
of FAP were successfully separated and identified as R‐(+)‐FAP and S‐(−)‐FAP. Toxicological assays revealed that R‐(+)‐FAP was 2.4‐fold more toxic than S‐(−)‐FAP to Daphnia magna and approximately threefold more to PC12 cells. Based on molecular docking results, dynamic simulation shows that strong hydrophobic interactions and a key hydrogen bond can only exist between R‐(+)‐FAP and AChE, which helps
The separation of several organophosphate pesticides on immobilized polysaccharide chiral stationary phases
作者:William L. Champion、William L. Watts、Weston J. Umstead
DOI:10.1002/chir.23473
日期:2022.8
enantiomers of widely used pesticides. Of particular note are organophosphorus-based pesticides like fenamiphos and profenofos, as examples. This work explores the enantioselective high-performance liquid chromatography (HPLC) separations of seven such organophosphorus pesticides (OP's) on the library of immobilized polysaccharide-based chiralstationaryphases (CSPs) with normal phase hexane/alcohol mixtures