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Related Experiment Videos

How do enzymes work?

J Kraut1

  • 1University of California, San Diego, La Jolla 92093.

Science (New York, N.Y.)
|October 28, 1988
PubMed
Summary
This summary is machine-generated.

Enzymes catalyze reactions by binding the transition state more strongly than reactants. This principle, refined by an amended expression, suggests molecular dynamics may also influence enzyme catalysis.

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Area of Science:

  • Biochemistry
  • Chemical Kinetics

Background:

  • The principle of transition-state stabilization is fundamental to understanding enzyme catalysis.
  • Enzymes are proposed to bind transition states more effectively than ground-state reactants.

Purpose of the Study:

  • To review the origin and acceptance of transition-state stabilization theory.
  • To present an amended expression for the relationship between catalysis and binding.
  • To explore implications of transition-state binding, including molecular dynamics.

Main Methods:

  • Review of transition-state theory.
  • Analysis of existing expressions relating catalysis and binding.
  • Exploration of theoretical implications.

Main Results:

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  • A misconception in transition-state theory led to oversimplified expressions.
  • An amended expression highlights the role of transition-state binding.
  • Internal molecular dynamics may contribute to enzyme catalysis, though their magnitude is unknown.

Conclusions:

  • Transition-state stabilization is a key principle in enzymology.
  • An amended theoretical expression provides a more accurate framework.
  • Further research into molecular dynamics in catalysis is warranted.