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Related Concept Videos

Introduction to Enzyme Kinetics01:19

Introduction to Enzyme Kinetics

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Enzyme kinetics studies the rates of biochemical reactions. Scientists monitor the reaction rates for a particular enzymatic reaction at various substrate concentrations. Additional trials with inhibitors or other molecules that affect the reaction rate may also be performed.
The experimenter can then plot the initial reaction rate or velocity (Vo) of a given trial against the substrate concentration ([S]) to obtain a graph of the reaction properties. For many enzymatic reactions involving a...
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Enzymes02:34

Enzymes

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Inside living organisms, enzymes act as catalysts for many biochemical reactions involved in cellular metabolism. The role of enzymes is to reduce the activation energies of biochemical reactions by forming complexes with its substrates. The lowering of activation energies favor an increase in the rates of biochemical reactions.
Enzyme deficiencies can often translate into life-threatening diseases. For example, a genetic abnormality resulting in the deficiency of the enzyme G6PD...
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Enzyme Kinetics01:19

Enzyme Kinetics

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Enzymes speed up reactions by lowering the activation energy of the reactants. The speed at which the enzyme turns reactants into products is called the rate of reaction. Several factors impact the rate of reaction, including the number of available reactants. Enzyme kinetics is the study of how an enzyme changes the rate of a reaction.
Scientists typically study enzyme kinetics with a fixed amount of enzyme in the controlled environment of a test tube. When more reactant, or substrate, is...
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Enzymes and Activation Energy01:13

Enzymes and Activation Energy

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The activation energy (or free energy of activation), abbreviated as Ea, is the small amount of energy input necessary for all chemical reactions to occur. During chemical reactions, certain chemical bonds break, and new ones form. For example, when a glucose molecule breaks down, bonds between the molecule's carbon atoms break. Since these are energy-storing bonds, they release energy when broken. However, the molecule must be somewhat contorted to get into a state that allows the bonds to...
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Introduction to Mechanisms of Enzyme Catalysis01:13

Introduction to Mechanisms of Enzyme Catalysis

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For many years, scientists thought that enzyme-substrate binding took place in a simple "lock-and-key" fashion. This model stated that the enzyme and substrate fit together perfectly in one instantaneous step. However, current research supports a more refined view scientists call induced fit. The induced-fit model expands upon the lock-and-key model by describing a more dynamic interaction between enzyme and substrate. As the enzyme and substrate come together, their interaction causes...
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Induced-fit Model01:13

Induced-fit Model

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Most chemical reactions in cells require enzymes—biological catalysts that speed up the reaction without being consumed or permanently changed. They reduce the activation energy needed to convert the reactants into products. Enzymes are proteins, that usually work by binding to a substrate—a reactant molecule that they act upon.
Enzymes exhibit substrate specificity, meaning that they can only bind to certain substrates. This is mainly determined by the shape and chemical...
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Updated: Jul 24, 2025

Unraveling Entropic Rate Acceleration Induced by Solvent Dynamics in Membrane Enzymes
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Unraveling Entropic Rate Acceleration Induced by Solvent Dynamics in Membrane Enzymes

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Enzyme dynamics-a brief review.

Jeremy R H Tame1

  • 1Protein Design Laboratory, Graduate School of Medical Life Science, Yokohama City University, Suehiro 1-7-29, Tsurumi, Yokohama, 230-0045 Japan.

Biophysical Reviews
|July 3, 2023
PubMed
Summary
This summary is machine-generated.

Internal enzyme motions are crucial for catalysis. Advances in protein design are helping to resolve ongoing scientific debates about their exact role in enzymatic reactions.

Keywords:
CatalysisMagicMotion

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Related Experiment Videos

Last Updated: Jul 24, 2025

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Area of Science:

  • Biochemistry
  • Enzymology
  • Protein Science

Background:

  • The role of internal enzyme motions in catalysis remains a subject of scientific debate.
  • Understanding these dynamics is key to comprehending enzyme function.

Purpose of the Study:

  • To explore the significance of internal thermal motions in enzyme catalysis.
  • To discuss how recent protein design advancements may aid in resolving debates surrounding enzyme dynamics.

Main Methods:

  • Review of existing literature on enzyme dynamics and catalysis.
  • Analysis of recent developments in protein design methodologies.
  • Theoretical considerations of enzyme motion and function.

Main Results:

  • Internal thermal motions are increasingly recognized as important contributors to enzyme catalytic efficiency.
  • Protein design approaches offer new avenues for experimentally probing enzyme dynamics.
  • Progress in the field suggests potential resolution for long-standing questions.

Conclusions:

  • Internal enzyme motions play a significant role in enzymatic catalysis.
  • Protein design innovations are poised to advance our understanding of enzyme dynamics.
  • Further research integrating protein design and biophysical methods is warranted.