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Updated: Aug 16, 2026

Unraveling Entropic Rate Acceleration Induced by Solvent Dynamics in Membrane Enzymes
Published on: January 16, 2016
Binding of the coenzyme and formation of the transketolase active center
G A Kochetov1, I A Sevostyanova
1A.N.Belozersky Institute of Physico-Chemical Biology, Moscow State University, Russia. kochetov@genebee.msu.ru
Abstract:
Transketolase (TK) is a homodimer, the simplest representative of thiamine diphosphate (ThDP)-dependent enzymes. It was first ThDP-dependent enzymes the crystal structure of which has been solved and revealed the general fold for this class of enzymes and the interactions of the non-covalently bound coenzyme ThDP with the protein component. Transketolase is a convenient model to study the structure(s) of the active center and the mechanism of action of ThDP-dependent enzymes. This review summarizes the results of studies on the kinetics of the interaction of ThDP with TK from Saccharomyces cerevisiae as well as the generation of the catalytically active form of the coenzyme within the holoenzyme and formation of the enzyme's active center.
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