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Linking protein motion to enzyme catalysis.


ABSTRACT: Enzyme motions on a broad range of time scales can play an important role in various intra- and intermolecular events, including substrate binding, catalysis of the chemical conversion, and product release. The relationship between protein motions and catalytic activity is of contemporary interest in enzymology. To understand the factors influencing the rates of enzyme-catalyzed reactions, the dynamics of the protein-solvent-ligand complex must be considered. The current review presents two case studies of enzymes-dihydrofolate reductase (DHFR) and thymidylate synthase (TSase)-and discusses the role of protein motions in their catalyzed reactions. Specifically, we will discuss the utility of kinetic isotope effects (KIEs) and their temperature dependence as tools in probing such phenomena.

SUBMITTER: Singh P 

PROVIDER: S-EPMC4341894 | biostudies-literature | 2015 Jan

REPOSITORIES: biostudies-literature

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Linking protein motion to enzyme catalysis.

Singh Priyanka P   Abeysinghe Thelma T   Kohen Amnon A  

Molecules (Basel, Switzerland) 20150113 1


Enzyme motions on a broad range of time scales can play an important role in various intra- and intermolecular events, including substrate binding, catalysis of the chemical conversion, and product release. The relationship between protein motions and catalytic activity is of contemporary interest in enzymology. To understand the factors influencing the rates of enzyme-catalyzed reactions, the dynamics of the protein-solvent-ligand complex must be considered. The current review presents two case  ...[more]

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