2M6B | pdb_00002m6b

Structure of full-length transmembrane domains of human glycine receptor alpha1 monomer subunit

• PDB DOI: https://doi.org/10.2210/pdb2M6B/pdb
• BMRB: 19126

• Classification: MEMBRANE PROTEIN
• Organism(s): Homo sapiens
• Expression System: Escherichia coli
• Mutation(s): No 
• Membrane Protein: Yes  PDBTMMemProtMDmpstruc


• Deposited: 2013-03-28 Released: 2013-09-04 
• Deposition Author(s): Mowrey, D., Cui, T., Jia, Y., Ma, D., Makhov, A.M., Zhang, P., Tang, P., Xu, Y.

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Experimental Data Snapshot

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

Literature

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

• PubMed: 23994010 
• DOI: https://doi.org/10.1016/j.str.2013.07.014
• Primary Citation 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.

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Organizational Affiliation: 
• Department of Computational and Systems Biology, University of Pittsburgh School of Medicine, Pittsburgh, PA 15260, USA.

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 1 assigned by authors.

Macromolecule Content 

• Total Structure Weight: 17.32 kDa 
• Atom Count: 1,229 
• Modeled Residue Count: 150 
• Deposited Residue Count: 150 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Full-Length Transmembrane Domains of Human Glycine Receptor alpha1 Subunit	A	150	Homo sapiens	Mutation(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

Experimental Data & Validation

Experimental Data

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

Structure Validation

Entry History 

Deposition Data

• Released Date: 2013-09-04 
Deposition Author(s): Mowrey, D., Cui, T., Jia, Y., Ma, D., Makhov, A.M., Zhang, P., Tang, P., Xu, Y.

Revision History  

• 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
• Version 1.4: 2024-05-15
  Changes: Data collection, Database references