Authors:
DL Foxall, KM Brindle, ID Campbell, RJ Simpson
Journal name: 
Biochim Biophys Acta
Citation info: 
804(2):209-215
Abstract: 
The kinetics of inhibition of human erythrocyte glyceraldehyde-3-phosphate dehydrogenase by iodoacetate were studied in the intact cell and in vitro. The kinetics were determined using 1H-NMR to follow solvent exchange of 1H and 2H at the C-2 position of lactate. The exchange occurs via a series of enzyme-catalysed reactions, including that catalysed by glyceraldehyde-3-phosphate dehydrogenase. A direct assay with quenching of the inhibition was also used to check the results. Iodoacetate was shown to act as an active site-directed inhibitor of the dehydrogenase. The enzyme inhibition patterns, which are characterised by a binding step and a kinetic step, are similar in situ and in vitro. Membrane binding, however, was found to alter the inhibition pattern for the enzyme in vitro.
DOI: 
http://doi.org/10.1016/0167-4889(84)90151-4
Research group: 
Brindle Group
E-pub date: 
31 May 1984
Users with this publication listed: 
Kevin Brindle