Putative pentameric open-channel structure of full-length transmembrane domains of human glycine receptor alpha1 subunit

Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 100 
  • Conformers Submitted: 15 
  • Selection Criteria: target function 

wwPDB Validation   3D Report Full Report

This is version 1.3 of the entry. See complete history


Open-Channel Structures of the Human Glycine Receptor alpha 1 Full-Length Transmembrane Domain.

Mowrey, D.D.Cui, T.Jia, Y.Ma, D.Makhov, A.M.Zhang, P.Tang, P.Xu, Y.

(2013) Structure 21: 1897-1904

  • DOI: https://doi.org/10.1016/j.str.2013.07.014
  • Primary Citation of Related Structures:  
    2M6B, 2M6I

  • PubMed Abstract: 

    Glycine receptors play a major role in mediating fast inhibitory neurotransmission in the spinal cord and brain stem, yet their high-resolution structures remain unsolved. We determined open-channel structures of the full-length transmembrane domain (TMD) of the human glycine receptor α1-subunit (hGlyR-α1) using nuclear magnetic resonance (NMR) spectroscopy and electron micrographs. hGlyR-α1 TMD spontaneously forms pentameric Cl(-)-conducting channels, with structures sharing overall topology observed in crystal structures of homologous bacterial and nematode pentameric ligand-gated ion channels (pLGICs). However, the mammalian hGlyR-α1 structures present several distinctive features, including a shorter, pore-lining TM2 helix with helical unwinding near the C-terminal end, a TM3 helical kink at A288 that partially overlaps with the homologous ivermectin-binding site in GluCl, and a highly dynamic segment between S267(15') of TM2 and A288 that likely affects allosteric modulations of channel function. Our structures provide additional templates for identifying potential drug targets in GlyRs and other mammalian pLGICs.

  • Organizational Affiliation

    Department of Computational and Systems Biology, University of Pittsburgh School of Medicine, Pittsburgh, PA 15260, USA.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Full-Length Transmembrane Domains of Human Glycine Receptor alpha1 Subunit
A, B, C, D, E
150Homo sapiensMutation(s): 0 
Membrane Entity: Yes 
UniProt & NIH Common Fund Data Resources
Find proteins for P23415 (Homo sapiens)
Explore P23415 
Go to UniProtKB:  P23415
PHAROS:  P23415
GTEx:  ENSG00000145888 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP23415
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 100 
  • Conformers Submitted: 15 
  • Selection Criteria: target function 

Structure Validation

View Full Validation Report

Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2013-09-04
    Type: Initial release
  • Version 1.1: 2013-09-18
    Changes: Database references
  • Version 1.2: 2013-10-30
    Changes: Database references
  • Version 1.3: 2023-06-14
    Changes: Data collection, Database references, Other