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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...
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.
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 Enzyme Kinetics01:19

Introduction to Enzyme Kinetics

Enzyme kinetics studies the rates of biochemical reactions. Scientists monitor the reaction rates for a particular enzymatic reaction at various substrate concentrations. Additional trials with inhibitors or other molecules that affect the reaction rate may also be performed.
The experimenter can then plot the initial reaction rate or velocity (Vo) of a given trial against the substrate concentration ([S]) to obtain a graph of the reaction properties. For many enzymatic reactions involving a...
Enzyme Kinetics01:19

Enzyme Kinetics

Enzymes speed up reactions by lowering the activation energy of the reactants. The speed at which the enzyme turns reactants into products is called the rate of reaction. Several factors impact the rate of reaction, including the number of available reactants. Enzyme kinetics is the study of how an enzyme changes the rate of a reaction.
Scientists typically study enzyme kinetics with a fixed amount of enzyme in the controlled environment of a test tube. When more reactant, or substrate, is...

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Related Experiment Video

Updated: Jun 14, 2026

Multi-enzyme Screening Using a High-throughput Genetic Enzyme Screening System
08:10

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

Published on: August 8, 2016

[Preface for special issue on enzyme engineering].

Cheng Jin1

  • 1Institute of Microbiology, Chinese Academy of Sciences, Beijing 100101, China. jinc@im.ac.cn

Sheng Wu Gong Cheng Xue Bao = Chinese Journal of Biotechnology
|April 1, 2010
PubMed
Summary
This summary is machine-generated.

Enzyme engineering, a key biotechnology field, has seen recent advances in China. This special issue highlights research in enzymatic conversion, therapeutic enzymes, feed additives, pollution control, and biorefineries.

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Area of Science:

  • Biotechnology
  • Enzymology
  • Chemical Engineering

Context:

  • Enzyme engineering is an interdisciplinary field merging enzymology and engineering.
  • It is a rapidly advancing area within modern biotechnology.
  • China has demonstrated significant progress in enzyme engineering research.

Purpose:

  • To promote enzyme engineering research in China.
  • To provide a comprehensive overview of recent advancements.
  • To consolidate and disseminate key findings in the field.

Summary:

  • This special issue features invited reviews and selected research articles.
  • Topics cover enzymatic conversion, therapeutic enzymes, and feed additives.
  • Focus areas also include organic pollutant degradation and biorefineries.

Impact:

  • Facilitates the growth of enzyme engineering in China.
  • Showcases diverse applications of enzyme technology.
  • Supports innovation in areas like sustainable chemistry and medicine.