Related Experiment Video
Updated: Jul 10, 2026

09:42
Unraveling Entropic Rate Acceleration Induced by Solvent Dynamics in Membrane Enzymes
Published on: January 16, 2016
[Structure-activity relationships in multienzyme complexes]
Molekuliarnaia Biologiia
|May 1, 1995
Summary
This study analyzes 2-oxo acid dehydrogenase complexes, revealing that identical subunits in self-assembling structures maintain consistent contacts and environments. This arrangement creates a defined symmetry within the enzyme complex, aiding in understanding its functional mechanisms.
Area of Science:
- Biochemistry and structural biology.
- Molecular kinetics and enzyme complex assembly.
Context:
- Analysis of multienzyme complexes, specifically 2-oxo acid dehydrogenase complexes.
- Investigating the relationship between subunit structure and self-assembly in biological systems.
Purpose:
- To analyze the structures and molecular kinetic models of 2-oxo acid dehydrogenase complexes.
- To propose a model where identical subunits in self-assembling complexes have uniform interactions and environments.
- To understand how subunit arrangement dictates overall complex symmetry and function.
Summary:
- Identical protein subunits within multienzyme complexes exhibit consistent contacts and environments, facilitating self-assembly.
- Peripheral components arrange on a core structure, establishing a defined symmetry based on the core's architecture and symmetry principles.
- The number of conformational classes is determined by the core's design and symmetry considerations.
Impact:
- Provides insights into the mechanisms governing the functioning of complex enzyme systems.
- Establishes a framework for understanding the structural basis of symmetry and self-assembly in multienzyme complexes.
- Discusses specific examples to illustrate the proposed models and their implications.
Related Concept Videos
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...
Enzyme deficiencies can often translate into life-threatening diseases. For example, a genetic abnormality resulting in the deficiency of the enzyme G6PD...
Introduction to Enzymes
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 bind the substrates and convert them into products. Many enzymes also...
Most enzymes are proteins that speed up biochemical reactions without being consumed. Enzymes contain one or more active sites that bind the substrates and convert them into products. Many enzymes also...
Enzymes and Activation Energy
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...
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 Enzymes
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 bind the substrates and convert them into products. Many enzymes also...
Most enzymes are proteins that speed up biochemical reactions without being consumed. Enzymes contain one or more active sites that bind the substrates and convert them into products. Many enzymes also...
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...

