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Related Concept Videos

Multi-Step Reactions02:31

Multi-Step Reactions

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Chemical reactions often occur in a stepwise fashion involving two or more distinct reactions taking place in a sequence. A balanced equation indicates the reacting species and the product species, but it reveals no details about how the reaction occurs at the molecular level. The reaction mechanism (or reaction path) provides details regarding the precise, step-by-step process by which a reaction occurs. Each of the steps in a reaction mechanism is called an elementary reaction. These...
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Enzyme Kinetics01:19

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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 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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Catalytically Perfect Enzymes01:07

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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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Reaction Mechanisms03:06

Reaction Mechanisms

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Chemical reactions often occur in a stepwise fashion, involving two or more distinct reactions taking place in a sequence. A balanced equation indicates the reacting species and the product species, but it reveals no details about how the reaction occurs at the molecular level. The reaction mechanism (or reaction path) provides details regarding the precise, step-by-step process by which a reaction occurs.
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Introduction to Enzyme Kinetics01:19

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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.
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Process technology for multi-enzymatic reaction systems.

Rui Xue1, John M Woodley

  • 1Center for Process Engineering and Technology, Department of Chemical and Biochemical Engineering, Technical University of Denmark, DK-2800 Kgs. Lyngby, Denmark.

Bioresource Technology
|April 26, 2012
PubMed
Summary
This summary is machine-generated.

Multi-enzyme systems offer a green alternative for chemical production. This review explores strategies and tools for scaling up these biocatalytic processes, addressing current challenges in industrial application.

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Area of Science:

  • Synthetic organic chemistry
  • Biocatalysis
  • Green chemistry

Background:

  • Biocatalysis is emerging as a sustainable method in organic synthesis.
  • Multi-enzymatic systems are gaining traction for industrial chemical production.
  • Enzymatic synthesis and fermentation present alternatives to traditional chemical catalysis.

Purpose of the Study:

  • To review technology options and strategies for developing multi-enzymatic processes.
  • To discuss challenges associated with scaling up multi-enzymatic systems.
  • To introduce engineering tools for process development and evaluation.

Main Methods:

  • Literature review of current biocatalysis technologies.
  • Discussion of scale-up strategies for multi-enzyme systems.
  • Introduction of engineering tools like kinetic models and operating windows.

Main Results:

  • Identified various technology options and strategies for multi-enzymatic process development.
  • Highlighted challenges in scaling up these complex systems.
  • Presented engineering tools to aid in process design and assessment.

Conclusions:

  • Multi-enzymatic systems hold significant promise for green chemical manufacturing.
  • Further development and application of engineering tools are crucial for successful scale-up.
  • Biocatalysis offers a viable and sustainable pathway for producing pharmaceuticals and fine chemicals.