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Related Concept Videos

Conserved Binding Sites01:49

Conserved Binding Sites

Many proteins’ biological role depends on their interactions with their ligands, small molecules that bind to specific locations on the protein known as ligand-binding sites. Ligand-binding sites are often conserved among homologous proteins as these sites are critical for protein function.
Binding sites are often located in large pockets, and if their location on a protein’s surface is unknown, it can be predicted using various approaches. The energetic method computationally analyses the...
Conserved Binding Sites01:49

Conserved Binding Sites

Many proteins’ biological role depends on their interactions with their ligands, small molecules that bind to specific locations on the protein known as ligand-binding sites. Ligand-binding sites are often conserved among homologous proteins as these sites are critical for protein function.
Binding sites are often located in large pockets, and if their location on a protein’s surface is unknown, it can be predicted using various approaches. The energetic method computationally analyses the...
Ligand Binding Sites02:40

Ligand Binding Sites

Proteins are dynamic macromolecules that carry out a wide variety of essential processes; however, the activities of most proteins depend on their interactions with other molecules or ions, known as ligands.
Protein-ligand interactions are quite specific; even though numerous potential ligands surround a cellular protein at any given time, only a particular ligand can bind to that protein. Moreover, a ligand binds only to a dedicated area on the surface of the protein, known as the...
Ligand Binding Sites02:40

Ligand Binding Sites

Proteins are dynamic macromolecules that carry out a wide variety of essential processes; however, the activities of most proteins depend on their interactions with other molecules or ions, known as ligands.
Protein-ligand interactions are quite specific; even though numerous potential ligands surround a cellular protein at any given time, only a particular ligand can bind to that protein. Moreover, a ligand binds only to a dedicated area on the surface of the protein, known as the...
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...
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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Modeling Ligands into Maps Derived from Electron Cryomicroscopy
09:30

Modeling Ligands into Maps Derived from Electron Cryomicroscopy

Published on: July 19, 2024

Ion binding sites and their representations by reduced models.

Benoît Roux1

  • 1Department of Biochemistry and Molecular Biology, Gordon Center for Integrative Science, University of Chicago, Chicago, Illinois 60637, USA. roux@uchicago.edu

The Journal of Physical Chemistry. B
|April 13, 2012
PubMed
Summary
This summary is machine-generated.

Simplified models of metal ion binding to macromolecules require statistical mechanics. This work presents a formal framework for reduced binding site models, accounting for surrounding influences on ion-ligand interactions.

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Area of Science:

  • Biophysics
  • Computational Chemistry
  • Biochemistry

Background:

  • Metal ion binding to macromolecules is crucial for biological function.
  • Understanding ion selectivity requires detailed molecular insights.
  • Simplified models are valuable but need rigorous theoretical treatment.

Purpose of the Study:

  • To develop a statistical mechanical formulation for reduced binding site models.
  • To formally address the challenges of modeling ion coordination in macromolecules.
  • To define the influence of the macromolecular environment on ion-ligand interactions.

Main Methods:

  • Elaboration of a statistical mechanical framework for reduced binding site models.
  • Adaptation of quasi-chemical theory principles for macromolecular systems.
  • Incorporation of indirect effects from non-explicitly treated protein atoms and solvent.

Main Results:

  • A formal theoretical framework for constructing reduced binding site models was established.
  • The method defines how to incorporate the average effects of the surrounding environment.
  • This approach provides a rigorous basis for studying ion selectivity in complex systems.

Conclusions:

  • A robust statistical mechanical formulation for reduced binding site models is presented.
  • This framework facilitates a deeper understanding of molecular determinants in ion selectivity.
  • The approach offers a valuable tool for analyzing ion-macromolecule interactions.