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Updated: Oct 27, 2025

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Letting go: Deep computational modeling insights into pH-dependent calcium affinity.

Matthias Buck1

  • 1Department of Physiology and Biophysics, Case Western Reserve University, Cleveland, Ohio, USA.

The Journal of Biological Chemistry
|July 19, 2021
PubMed
Summary

Cofactor binding, like calcium, can be regulated by allosteric networks. A computational study by Joswig et al. details this mechanism for the pattern recognition receptor langerin.

Keywords:
allosteryendosomelangerinlectin receptormolecular dynamics simulationprotein–calcium interactionprotein–carbohydrate bindingprotein–ligand dissociationstructure–function relationshipunbinding process

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Area of Science:

  • Molecular biology
  • Biophysics
  • Structural biology

Background:

  • Cofactors such as calcium are often buried within molecular interfaces in their bound state.
  • The regulation of these deeply integrated cofactor interactions presents a significant biological question.

Purpose of the Study:

  • To investigate the regulatory mechanisms of buried cofactor interactions.
  • To develop a detailed model for the unbinding mechanism of the pattern recognition receptor langerin.

Main Methods:

  • Extensive computational study.
  • Allosteric network analysis.
  • Molecular dynamics simulations (implied).

Main Results:

  • Identified allosteric networks as a key regulatory mechanism for buried cofactor interactions.
  • Developed a detailed computational model for langerin unbinding.
  • Characterized specific unbinding pathways and intermediate states.

Conclusions:

  • Allosteric regulation provides a mechanism to control interactions involving deeply buried cofactors.
  • The study offers a comprehensive model for langerin's molecular recognition and binding dynamics.