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Related Concept Videos

Introduction to Enzymes01:22

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...
Introduction To Enzymes01:22

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...
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...
Enzymes and Activation Energy01:13

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...

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Related Experiment Video

Updated: May 25, 2026

Study of Short Peptide Adsorption on Solution Dispersed Inorganic Nanoparticles Using Depletion Method
09:43

Study of Short Peptide Adsorption on Solution Dispersed Inorganic Nanoparticles Using Depletion Method

Published on: April 11, 2020

Enzymes on material surfaces.

Joey N Talbert1, Julie M Goddard

  • 1Department of Food Science, University of Massachusetts, Amherst, MA 01003, USA.

Colloids and Surfaces. B, Biointerfaces
|January 25, 2012
PubMed
Summary
This summary is machine-generated.

Preserving enzyme activity on material surfaces is crucial for applications like biosensors and drug delivery. This review examines strategies to optimize enzyme function after immobilization, addressing enzyme, material, and interface factors.

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Area of Science:

  • Biotechnology and Materials Science
  • Enzyme Engineering and Immobilization

Background:

  • Enzyme interactions with material surfaces are vital for diverse industrial applications, including food processing, pharmaceuticals, biosensors, and drug delivery systems.
  • Enzyme activity can be compromised upon immobilization due to intrinsic enzyme properties, material characteristics, or the enzyme-material-substrate interface environment.

Purpose of the Study:

  • To review recent advancements in preserving, optimizing, and enhancing enzyme activity on material surfaces.
  • To contextualize these advances within established theories of activity loss post-immobilization.

Main Methods:

  • Systematic breakdown of immobilized enzyme systems into three key components: enzyme, material, and interface.
  • Analysis of potential causes for enzyme activity loss for each component.
  • Identification and description of strategies employed to mitigate activity loss.

Main Results:

  • Detailed examination of factors affecting enzyme activity at the individual component level (enzyme, material, interface).
  • Compilation of various strategies implemented to counteract enzyme deactivation on surfaces.
  • Highlighting the interplay between enzyme properties, material choice, and interfacial conditions.

Conclusions:

  • Summarizes current strategies for maintaining and enhancing enzyme activity in immobilized systems.
  • Identifies critical research gaps and future directions needed to overcome existing limitations in the field.
  • Emphasizes the need for further investigation into enzyme-material interactions for improved biotechnological applications.