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Related Concept Videos

Enzyme Kinetics01:19

Enzyme Kinetics

106.1K
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...
106.1K
Introduction to Enzymes01:22

Introduction to Enzymes

34.8K
The use of enzymes by humans dates to 7000 BCE. Humans first used enzymes to ferment sugars and produce alcohol without knowing that this was an enzyme-catalyzed reaction. Wilhelm Kuhne coined the term 'enzyme' in 1877 from the Greek words ‘en’ meaning ‘in’ or ‘within’ and ‘zyme’ meaning ‘yeast.’
Most enzymes are proteins that speed up biochemical reactions without being consumed. Enzymes contain one or more active sites that...
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Enzyme-linked Receptors01:00

Enzyme-linked Receptors

89.0K
Enzyme-linked receptors are proteins that act as both receptor and enzyme, activating multiple intracellular signals. This is a large group of receptors that include the receptor tyrosine kinase (RTK) family. Many growth factors and hormones bind to and activate the RTKs.
Neurotrophin (NT) receptors are a family of RTKs, including trkA, trkB, and trkC (tropomyosin-related kinase) receptors. TrkA is specific for nerve growth factor (NGF), neurotrophin-6, and neurotrophin-7. TrkB binds...
89.0K
Introduction to Enzyme Kinetics01:19

Introduction to Enzyme Kinetics

35.9K
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...
35.9K
Enzyme Inhibition01:30

Enzyme Inhibition

95.0K
Inhibitors are molecules that reduce enzyme activity by binding to the enzyme. In a normally functioning cell, enzymes are regulated by a variety of inhibitors. Drugs and other toxins can also inhibit enzymes. Some inhibitors bind to the enzyme’s active site, while others inhibit enzymatic activity by binding to other sites on the protein structure.
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Updated: Apr 1, 2026

Single Liposome Measurements for the Study of Proton-Pumping Membrane Enzymes Using Electrochemistry and Fluorescent Microscopy
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SINGLE MOLECULE ENZYMOLOGY FINDS ITS STRIDE.

Jeffrey Perkel

    Biotechniques
    |October 14, 2015
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    Summary

    Scientists are advancing biophysics techniques to study single molecules. This exploration into the micro-world reveals new insights into molecular behavior and function.

    Area of Science:

    • Biophysics
    • Molecular Biology
    • Nanotechnology

    Background:

    • Advancements in biophysics are enabling unprecedented exploration of single molecules.
    • New techniques are crucial for understanding molecular mechanisms at the smallest scales.

    Discussion:

    • Researchers are developing innovative methods to probe molecular interactions.
    • The focus is on overcoming challenges in observing and manipulating single molecules.

    Key Insights:

    • The development of novel techniques is pushing the boundaries of molecular analysis.
    • Understanding single molecules is key to unlocking complex biological processes.

    Outlook:

    • Continued innovation in biophysics promises deeper insights into the micro-world.

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  • Future research will likely focus on applying these techniques to solve biological problems.