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Enzymes

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 Enzymes

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...

Introduction To Enzymes

Introduction To Enzymes

Introduction to Mechanisms of Enzyme Catalysis

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...

Introduction to Mechanisms of Enzyme Catalysis

Introduction to Mechanisms of Enzyme Catalysis

Environmental Applications of Microorganisms

Environmental Applications of Microorganisms

Microorganisms play a pivotal role in maintaining ecosystem balance by recycling essential elements such as carbon, nitrogen, and phosphorus, as well as supporting processes like bioremediation, wastewater treatment, and biofuel production.Microbes in Elemental CyclesIn the carbon cycle, microorganisms decompose organic matter, releasing carbon dioxide via aerobic respiration. This carbon dioxide is subsequently used by photosynthetic organisms to synthesize organic compounds, closing the...

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Related Experiment Video

Updated: Mar 31, 2026

Multi-enzyme Screening Using a High-throughput Genetic Enzyme Screening System

Multi-enzyme Screening Using a High-throughput Genetic Enzyme Screening System

Published on: August 8, 2016

Enzymes: principles and biotechnological applications.

Peter K Robinson¹

¹College of Science and Technology, University of Central Lancashire, Preston PR1 2HE, U.K. pkrobinson@uclan.ac.uk.

Essays in Biochemistry

|October 28, 2015

Summary

Enzymes, or biocatalysts, accelerate biochemical reactions and can be purified for industrial use. This chapter details enzymology principles, enzyme purification, and their commercial applications.

Area of Science:

Biochemistry
Biotechnology

Background:

Enzymes function as biological catalysts (biocatalysts), accelerating biochemical reactions within living organisms.
These biological catalysts can be isolated from cells for diverse industrial applications.

Purpose of the Study:

To provide a comprehensive overview of fundamental enzymology principles.
To discuss techniques for enzyme purification.
To explore the industrial applications of enzymes.

Main Methods:

Review of enzymology principles including classification, structure, kinetics, and inhibition.
Discussion of enzyme purification methodologies.
Overview of industrial enzyme applications.

Main Results:

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Last Updated: Mar 31, 2026

Multi-enzyme Screening Using a High-throughput Genetic Enzyme Screening System

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Enzymes are essential biological catalysts with diverse structures and kinetics.
Various purification techniques enable the isolation of enzymes for specific applications.
Enzymes are crucial for numerous commercially important industrial processes.

Conclusions:

Understanding enzymology principles is key to harnessing biocatalysts.
Effective enzyme purification is critical for successful industrial implementation.
Enzymes offer significant potential for sustainable and efficient industrial catalysis.