Related Experiment Video

Updated: Oct 3, 2026

Unraveling Entropic Rate Acceleration Induced by Solvent Dynamics in Membrane Enzymes
09:42

Unraveling Entropic Rate Acceleration Induced by Solvent Dynamics in Membrane Enzymes

Published on: January 16, 2016

[The kinetic and catalytic properties of Penicillium vitale catalase]

N V Latyshko, L V Gudkova

    Ukrainskii Biokhimicheskii Zhurnal (1978)
    |March 1, 1996
    PubMed

    More Related Videos

    Ecotoxicological Methodologies to Evaluate Biomarkers at Different Scales in Neotropical Anurans08:14

    Ecotoxicological Methodologies to Evaluate Biomarkers at Different Scales in Neotropical Anurans

    Published on: April 28, 2023

    Elucidating β-1,3-Glucanase and Peroxidase Physicochemical Properties of Wheat Cell Wall Defense Mechanism Against Diuraphis noxia Infestation10:26

    Elucidating β-1,3-Glucanase and Peroxidase Physicochemical Properties of Wheat Cell Wall Defense Mechanism Against Diuraphis noxia Infestation

    Published on: July 26, 2024

    Related Concept Videos

    Catalysis02:50

    Catalysis

    The presence of a catalyst affects the rate of a chemical reaction. A catalyst is a substance that can increase the reaction rate without being consumed during the process. A basic comprehension of a catalysts’ role during chemical reactions can be understood from the concept of reaction mechanisms and energy diagrams.
    Catalytically Perfect Enzymes01:07

    Catalytically Perfect Enzymes

    The theory of catalytically perfect enzymes was first proposed by W.J. Albery and J. R. Knowles in 1976. These enzymes catalyze biochemical reactions at high-speed. Their catalytic efficiency values range from 108-109 M-1s-1. These enzymes are also called 'diffusion-controlled' as the only rate-limiting step in the catalysis is that of the substrate diffusion into the active site. Examples include triose phosphate isomerase, fumarase, and superoxide dismutase.
    Introduction to Mechanisms of Enzyme Catalysis01:13

    Introduction to Mechanisms of Enzyme Catalysis

    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 a mild...
    Turnover Number and Catalytic Efficiency01:19

    Turnover Number and Catalytic Efficiency

    The turnover number of an enzyme is the maximum number of substrate molecules it can transform per unit time. Turnover numbers for most enzymes range from 1 to 1000 molecules per second. Catalase has the known highest turnover number, capable of converting up to 2.8×106 molecules of hydrogen peroxide into water and oxygen per second. Lysozyme has the lowest known turnover number of half a molecule per second.
    Chymotrypsin is a pancreatic enzyme that breaks down proteins during digestion. The...
    Introduction to Mechanisms of Enzyme Catalysis01:13

    Introduction to Mechanisms of Enzyme Catalysis

    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 a mild...
    Catalysis01:27

    Catalysis

    Catalysis influences the rate of chemical reactions by providing an alternative reaction pathway with lower activation energy. A catalyst speeds up a reaction, but it is not consumed during the process. The fundamental principle of catalysis is the ability of a catalyst to alter the reaction mechanism, often introducing a more efficient pathway than the uncatalyzed process.In a catalyzed reaction, the catalyst participates directly in the reaction mechanism. It interacts with reactants to form...