Crystal Structures of Acetylcholinesterase in Complex with Organophosphorus Compounds Suggest that the Acyl Pocket Modulates the Aging Reaction by Precluding the Formation of the Trigonal Bipyramidal Transition State.
Hornberg, A., Tunemalm, A.-K., Ekstrom, F.(2007) Biochemistry 46: 4815
- PubMed: 17402711 
- DOI: 10.1021/bi0621361
- Primary Citation of Related Structures:  
2JGE, 2JGF, 2JGI, 2JGJ, 2JGK, 2JGL, 2JGM - PubMed Abstract: 
Organophosphorus compounds (OPs), such as nerve agents and a group of insecticides, irreversibly inhibit the enzyme acetylcholinesterase (AChE) by a rapid phosphorylation of the catalytic Ser203 residue. The formed AChE-OP conjugate subsequently undergoes an elimination reaction, termed aging, that results in an enzyme completely resistant to oxime-mediated reactivation by medical antidotes ...