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Related Concept Videos

Allosteric Regulation01:08

Allosteric Regulation

Allosteric regulation of enzymes occurs when the binding of an effector molecule to a site that is different from the active site causes a change in the enzymatic activity. This alternate site is called an allosteric site, and an enzyme can contain more than one of these sites. Allosteric regulation can either be positive or negative, resulting in an increase or decrease in enzyme activity. Most enzymes that display allosteric regulation are metabolic enzymes involved in the degradation or...
Allosteric Regulation01:08

Allosteric Regulation

Allosteric regulation of enzymes occurs when the binding of an effector molecule to a site that is different from the active site causes a change in the enzymatic activity. This alternate site is called an allosteric site, and an enzyme can contain more than one of these sites. Allosteric regulation can either be positive or negative, resulting in an increase or decrease in enzyme activity. Most enzymes that display allosteric regulation are metabolic enzymes involved in the degradation or...
Allosteric Proteins-ATCase01:19

Allosteric Proteins-ATCase

Binding sites linkages can regulate a protein's function.  For example, enzyme activity is often regulated through a feedback mechanism where the end product of the biochemical process serves as an inhibitor.
Aspartate transcarbamoylase (ATCase) is a cytosolic enzyme that catalyzes the condensation of L-aspartate and carbamoyl phosphate to  N-carbamoyl-L-aspartate. This reaction is the first step in pyrimidine biosynthesis. UTP and CTP, the end products of the pyrimidine synthesis pathway,...
Regulated Protein Degradation02:58

Regulated Protein Degradation

It is vital to regulate the activity of enzymatic as well as non-enzymatic proteins inside the cell. This can be achieved either through creating a balance between their rate of synthesis and degradation or regulating the intrinsic activity of the protein. Both these regulation mechanisms play an essential role in the normal functioning of cells.
Protein degradation plays two important roles in the cells. It helps to protect cells from misfolded or damaged proteins before they lead to a...
Regulated Protein Degradation02:58

Regulated Protein Degradation

It is vital to regulate the activity of enzymatic as well as non-enzymatic proteins inside the cell. This can be achieved either through creating a balance between their rate of synthesis and degradation or regulating the intrinsic activity of the protein. Both these regulation mechanisms play an essential role in the normal functioning of cells.
Protein degradation plays two important roles in the cells. It helps to protect cells from misfolded or damaged proteins before they lead to a...
Ligand Binding and Linkage00:49

Ligand Binding and Linkage

Allosteric proteins have more than one ligand binding site; the binding of a ligand to any of these sites influences the binding of ligands to the other sites. When a protein is allosteric, its binding sites are called coupled or linked.  In the case of enzymes, the site that binds to the substrate is known as the active site and the other site is known as the regulatory site. When a ligand binds to the regulatory site, this leads to conformational changes in the protein that can influence the...

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Related Experiment Video

Updated: Jun 27, 2026

Characterizing Modulators of Protease-Activated Receptors with a Calcium Mobilization Assay Using a Plate Reader
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Characterizing Modulators of Protease-Activated Receptors with a Calcium Mobilization Assay Using a Plate Reader

Published on: May 24, 2024

Allosteric regulation of proteases.

Patrick Hauske1, Christian Ottmann, Michael Meltzer

  • 1Chemical Genomics Centre der Max-Planck-Gesellschaft, Dortmund, Germany.

Chembiochem : a European Journal of Chemical Biology
|November 21, 2008
PubMed
Summary

Allosteric regulation controls enzyme activity via non-active site interactions. Understanding these mechanisms for proteases offers a promising avenue for medicinal chemistry and drug design.

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Published on: May 24, 2024

The Determination of Protease Specificity in Mouse Tissue Extracts by MALDI-TOF Mass Spectrometry: Manipulating PH to Cause Specificity Changes
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Area of Science:

  • Biochemistry and enzymology
  • Medicinal chemistry
  • Structural biology

Background:

  • Allostery is a fundamental mechanism for regulating enzyme activity.
  • Allosteric modulators offer an alternative to traditional enzyme inhibitors/activators.
  • Proteases are key drug targets, making allosteric regulation of interest.

Purpose of the Study:

  • To explore allosteric modulators as a strategy for protease regulation.
  • To investigate the structural basis of allosteric protease regulation.
  • To identify generalizable mechanisms for rational drug design.

Main Methods:

  • Literature review of elucidated structural bases of allosteric protease regulators.
  • Analysis of proteinaceous and small-molecule allosteric regulators.
  • Comparative structural analysis.

Main Results:

  • Allosteric regulation involves interactions at sites distinct from the enzyme's active center.
  • Structural elucidation of some allosteric protease regulators has been achieved.
  • A generalizable mechanism for allosteric protease regulation appears to exist.

Conclusions:

  • Allosteric modulators are a valuable approach for protease drug design.
  • Understanding the structural basis of allostery is key to rational drug discovery.
  • Exploitable general mechanisms for allosteric protease effectors may guide future therapeutic development.