相关实验视频

Updated: Jul 8, 2026

Direct Detection of the Acetate-forming Activity of the Enzyme Acetate Kinase
05:51

Direct Detection of the Acetate-forming Activity of the Enzyme Acetate Kinase

Published on: December 19, 2011

甘氨酸酶I的催化机制:一个理论研究

F Himo1, P E Siegbahn

  • 1Department of Molecular Biology, TPC-15, The Scripps Research Institute, La Jolla, California 92037, USA. fhimo@scripps.edu

Journal of the American Chemical Society
|October 18, 2001
PubMed
概括

人类甘氨酸酶I (GlxI) 使用辅因子来排毒甲基甘氨酸. 混合密度功能理论揭示了特定酶残留物如何抽象基质质子,解释了这一关键反应的立体化学结果.

更多相关视频

Bridging the Bio-Electronic Interface with Biofabrication16:38

Bridging the Bio-Electronic Interface with Biofabrication

Published on: June 6, 2012

Spectrophotometric Methods for the Study of Eukaryotic Glycogen Metabolism07:59

Spectrophotometric Methods for the Study of Eukaryotic Glycogen Metabolism

Published on: August 19, 2021

相关概念视频

Induced-fit Model01:13

Induced-fit Model

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 characteristics of...
Enzyme Inhibition01:30

Enzyme Inhibition

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.
Enzymes02:34

Enzymes

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...
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...
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...