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Related Concept Videos

Catalytically Perfect Enzymes01:07

Catalytically Perfect Enzymes

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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.
 
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Evolution of New Traits in Microbes01:24

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Microorganisms evolve rapidly due to their large population sizes and short generation times, often exhibiting measurable changes within days under laboratory conditions. Natural selection acts on standing genetic variation, enabling the retention and amplification of beneficial traits that confer fitness advantages in changing environments.Adaptive Pigment Regulation in RhodobacterIn Rhodobacter, a genus of purple non-sulfur bacteria, light-harvesting pigments such as bacteriochlorophyll and...
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Introduction to Mechanisms of Enzyme Catalysis01:13

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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...
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Bioreactor Controls-III

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Strain improvement is a foundational strategy in industrial microbiology aimed at maximizing microbial productivity, particularly because natural isolates typically yield commercially valuable products in very low concentrations. Although optimizing the culture medium and environmental conditions can improve yields, these adjustments are inherently limited by the organism’s genetic potential. As a result, the focus shifts toward genetic modifications to enhance biosynthetic capacity. The...
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Enzyme Kinetics01:19

Enzyme Kinetics

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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.
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Introduction to Enzymes01:22

Introduction to Enzymes

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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.’
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Related Experiment Video

Updated: Apr 14, 2026

A New Screening Method for the Directed Evolution of Thermostable Bacteriolytic Enzymes
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A New Screening Method for the Directed Evolution of Thermostable Bacteriolytic Enzymes

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Directed evolution 2.0: improving and deciphering enzyme properties.

Feng Cheng1, Leilei Zhu, Ulrich Schwaneberg

  • 1Lehrstuhl für Biotechnologie, RWTH Aachen University, Worringerweg 3, 52074 Aachen, Germany. u.schwaneberg@biotec.rwth-aachen.de.

Chemical Communications (Cambridge, England)
|April 16, 2015
PubMed
Summary
This summary is machine-generated.

Directed evolution is a powerful tool for tailoring enzymes. Newer strategies reduce time and screening, offering molecular insights and improving enzyme engineering.

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Area of Science:

  • Biotechnology
  • Enzyme Engineering
  • Molecular Biology

Background:

  • Directed evolution is an established method for optimizing enzyme properties for diverse applications.
  • Traditional directed evolution involves iterative rounds of diversity generation and screening, which can be time-consuming and resource-intensive.

Purpose of the Study:

  • To review and compare conceptual advances in knowledge-generating directed evolution strategies.
  • To highlight strategies that overcome the limitations of traditional directed evolution methods.
  • To propose a novel 'KnowVolution' strategy for enhanced enzyme engineering.

Main Methods:

  • Analysis of existing directed evolution campaigns and strategies.
  • Comparison of traditional and knowledge-generating approaches.
  • Conceptual synthesis of advances in the field.

Main Results:

  • Traditional directed evolution methods are increasingly being superseded by more efficient strategies.
  • Newer strategies require less time and screening effort.
  • Advanced methods provide deeper molecular understanding of enzyme properties.

Conclusions:

  • Knowledge-gaining directed evolution strategies offer significant advantages over traditional methods.
  • The proposed 'KnowVolution' strategy integrates knowledge generation for more efficient enzyme engineering.
  • Further exploration of these advanced strategies is crucial for maximizing the potential of directed evolution.