Related Experiment Video

Updated: Aug 8, 2026

Proteomics to Identify Proteins Interacting with P2X2 Ligand-Gated Cation Channels
16:36

Proteomics to Identify Proteins Interacting with P2X2 Ligand-Gated Cation Channels

Published on: May 18, 2009

The monomers of the P2X1 receptor model and KcsA protein share a similar structural fold

Peter P Mager1, Anje Weber, Luis Sanchez

  • 1Institute of Pharmacology and Toxicology, University of Leipzig, Saxony, Germany. magp@medizin.uni-leipzig.de

Protein and Peptide Letters
|February 4, 2006
PubMed

Insights

The P2X1 receptor

Area of Science:

  • Structural biology
  • Biophysics
  • Computational chemistry

Background:

  • The P2X1 receptor subunit plays a role in apoptosis, platelet aggregation, and smooth muscle contraction.
  • Understanding the P2X1 receptor's structure is crucial for elucidating its function.
  • Previous studies have implicated P2X1 in various physiological processes.

Purpose of the Study:

  • To predict the three-dimensional conformation of the membrane-embedded mouse P2X1 glycoprotein.
  • To provide a structural model for the ligand-gated cation channel-forming receptor.
  • To make the optimized P2X1 receptor subunit structure available to researchers.

Main Methods:

  • Secondary structure prediction.
  • Conversion of secondary structure to 3D geometry.
  • Optimization using quantum chemistry (RHF/3-21G) and molecular mechanics (AMBER96).
  • Simulation of membrane-embedded protein fold with dielectric.
  • Refinement using conjugate gradient minimization.

Main Results:

  • A predicted three-dimensional conformation of the mouse P2X1 receptor subunit was generated.
  • The overall fold of P2X1 was found to be similar to the KcsA protein, despite differences in size.
  • The geometry-optimized P2X1 structure is available in PDB format.

Conclusions:

  • The study successfully predicted the structure of the mouse P2X1 receptor subunit.
  • The provided structural model can aid further research into P2X1 receptor function.
  • The availability of the P2X1 structure facilitates academic research in related fields.

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