Slow, Tight-Binding Inhibition of Acetylcholinessterase (AChe) By Aryl trifluoromethyl Ketones.
Abstract
Acetylcholinesterases from Torpedo californica (TC-AChE) and Electrophorus electricus (EE-AChE) are inhibited by aryl trifluoroketones, m-XPhCOCF3. Trifluoroacetophenone (TFA; X = H) is a rapid competitive inhibitor; K(i) values are 210 nM and 520 nm for respective inhibitions of EE-AChE and TC-AChE. m-Dimethylamino trifluoroacetophenone (DMTFA, X = Me2N) and m-trimethylamino trifluoroacetophenone (TMTFA, X = Me3N+) are slow, tight binding inhibitors. The kinetics of inhibition by DMTFA are described.
Document Details
- Document Type
- Technical Report
- Publication Date
- May 13, 1993
- Accession Number
- ADP008853
Entities
People
- B. P. Doctor
- D. M. Quinn
- H. Nair
- J. Servalli
- K. Lee
Organizations
- University of Iowa