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Incorporating Target Protein Structure Flexibility and Dynamics in Computational Drug Discovery Using Ensemble-Based Docking Analysis
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Incorporating Target Protein Structure Flexibility and Dynamics in Computational Drug Discovery Using Ensemble-Based Docking Analysis

Published on: June 20, 2025

p38γ activation triggers dynamical changes in allosteric docking sites.

Ramiro G Rodriguez Limardo1, Dardo N Ferreiro, Adrián E Roitberg

  • 1Departamento de Química Inorgánica, Analítica y Química Física/INQUIMAE-CONICET, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, Pabellón 2, Buenos Aires, Argentina.

Biochemistry
|January 18, 2011
PubMed
Summary
This summary is machine-generated.

Mitogen-activated protein kinases (MAPKs) dynamics are crucial for their function. This study reveals how phosphorylation and ATP binding regulate p38γ MAPK plasticity and domain movements, impacting signaling networks.

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Published on: October 26, 2015

Area of Science:

  • Biochemistry
  • Molecular Biology
  • Structural Biology

Background:

  • Mitogen-activated protein kinases (MAPKs) are key regulators of cellular processes.
  • p38 MAPKs, involved in proliferation and differentiation, require specific activation mechanisms.
  • Understanding MAPK dynamics is crucial for deciphering signal transduction pathways.

Purpose of the Study:

  • To investigate the dynamical changes associated with p38γ MAPK activation.
  • To elucidate the role of phosphorylation and ATP binding in MAPK dynamics.
  • To understand how these dynamics influence protein function and interactions.

Main Methods:

  • Molecular dynamics (MD) simulations were employed.
  • Simulations were performed on p38γ in active (ATP-bound, ATP-free) and inactive states.
  • Analysis focused on conformational changes, domain movements, and allosteric regulation.

Main Results:

  • Dynamical fluctuations of docking sites are allosterically regulated by active site changes.
  • Phosphorylated and ATP-bound p38γ exhibit concerted domain motions, unlike the inactive state.
  • ATP binding influences domain reorientation and protein plasticity.

Conclusions:

  • MAPK activation involves regulated correlated dynamics beyond simple conformational changes.
  • Phosphorylation and ATP binding are critical regulators of p38γ MAPK plasticity.
  • MAPK plasticity influences catalytic activity, specificity, and protein-protein interactions, affecting cellular signaling outcomes.