1AFO | pdb_00001afo

DIMERIC TRANSMEMBRANE DOMAIN OF HUMAN GLYCOPHORIN A, NMR, 20 STRUCTURES

• PDB DOI: https://doi.org/10.2210/pdb1AFO/pdb

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


• Deposited: 1997-03-11 Released: 1997-09-17 
• Deposition Author(s): Mackenzie, K.R., Prestegard, J.H., Engelman, D.M.

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Experimental Data Snapshot

• Method: SOLUTION NMR
• Conformers Calculated: 38 
• Conformers Submitted: 20 
• Selection Criteria: LEAST RESTRAINT VIOLATIONS 

Literature

A transmembrane helix dimer: structure and implications.

MacKenzie, K.R., Prestegard, J.H., Engelman, D.M.

(1997) Science 276: 131-133

• PubMed: 9082985 
• DOI: https://doi.org/10.1126/science.276.5309.131
• Primary Citation Related Structures: 
  1AFO


• PubMed Abstract: 
  

  The three-dimensional structure of the dimeric transmembrane domain of glycophorin A (GpA) was determined by solution nuclear magnetic resonance spectroscopy of a 40-residue peptide solubilized in aqueous detergent micelles. The GpA membrane-spanning alpha helices cross at an angle of -40 degrees and form a small but well-packed interface that lacks intermonomer hydrogen bonds. The structure provides an explanation for the previously characterized sequence dependence of GpA dimerization and demonstrates that van der Waals interactions alone can mediate stable and specific associations between transmembrane helices.

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Organizational Affiliation: 
• Department of Molecular Biophysics and Biochemistry, Yale University, New Haven, CT 06520-8114, USA.

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Homo 2-mer - A2 

Biological assembly 1 assigned by authors.

Macromolecule Content 

• Total Structure Weight: 8.91 kDa 
• Atom Count: 628 
• Modeled Residue Count: 80 
• Deposited Residue Count: 80 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
GLYCOPHORIN A	A, B	40	Homo sapiens	Mutation(s): 0  Membrane Entity: Yes
UniProt & NIH Common Fund Data Resources
Find proteins for P02724 (Homo sapiens) Explore P02724  Go to UniProtKB:  P02724
PHAROS:  P02724 GTEx:  ENSG00000170180

Experimental Data & Validation

Experimental Data

• Method: SOLUTION NMR
• Conformers Calculated: 38 
• Conformers Submitted: 20 
• Selection Criteria: LEAST RESTRAINT VIOLATIONS 

Structure Validation

Entry History 

Deposition Data

• Released Date: 1997-09-17 
Deposition Author(s): Mackenzie, K.R., Prestegard, J.H., Engelman, D.M.

Revision History  

• Version 1.0: 1997-09-17
  Type: Initial release
  
• Version 1.1: 2008-03-24
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance
• Version 1.3: 2021-10-27
  Changes: Data collection, Database references, Derived calculations, Other
• Version 1.4: 2024-05-22
  Changes: Data collection