Macromolecule Content

• Total Structure Weight: 2.77 kDa 
• Atom Count: 173 
• Residue Count: 23 
• Unique protein chains: 1

2NR1

TRANSMEMBRANE SEGMENT 2 OF NMDA RECEPTOR NR1, NMR, 10 STRUCTURES

• DOI: 10.2210/pdb2NR1/pdb

• Classification: RECEPTOR
• Organism(s): Homo sapiens
• Expression System: Escherichia coli BL21
• Mutation(s): No 


• Deposited: 1997-12-22 Released: 1998-04-29 
• Deposition Author(s): Gesell, J.J., Sun, W., Montal, M., Opella, S.

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Experimental Data Snapshot

• Method: SOLUTION NMR
• Conformers Calculated: 30 
• Conformers Submitted: 10 
• Selection Criteria: LOWEST ENERGY 

Literature

Structures of the M2 channel-lining segments from nicotinic acetylcholine and NMDA receptors by NMR spectroscopy.

Opella, S.J., Marassi, F.M., Gesell, J.J., Valente, A.P., Kim, Y., Oblatt-Montal, M., Montal, M.

(1999) Nat Struct Biol 6: 374-379

• PubMed: 10201407 
• DOI: 10.1038/7610
• Primary Citation of Related Structures:  
  2NR1, 1A11, 1EQ8, 1CEK


• PubMed Abstract: 
  

The structures of functional peptides corresponding to the predicted channel-lining M2 segments of the nicotinic acetylcholine receptor (AChR) and of a glutamate receptor of the NMDA subtype (NMDAR) were determined using solution NMR experiments on micelle samples, and solid-state NMR experiments on bilayer samples. Both M2 segments form straight transmembrane alpha-helices with no kinks. The AChR M2 peptide inserts in the lipid bilayer at an angle of 12 degrees relative to the bilayer normal, with a rotation about the helix long axis such that the polar residues face the N-terminal side of the membrane, which is assigned to be intracellular. A model built from these solid-state NMR data, and assuming a symmetric pentameric arrangement of M2 helices, results in a funnel-like architecture for the channel, with the wide opening on the N-terminal intracellular side.

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Organizational Affiliation: 

Department of Chemistry, University of Pennsylvania, Philadelphia 19014, USA. [e-mail]

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
NR1 M2	A	27	Homo sapiens	Mutation(s): 0  Gene Names: GRIN1, NMDAR1
Find proteins for Q05586 (Homo sapiens) Explore Q05586  Go to UniProtKB:  Q05586
NIH Common Fund Data Resources
PHAROS:  Q05586 GTEx:  ENSG00000176884

Experimental Data & Validation

Experimental Data

• Method: SOLUTION NMR
• Conformers Calculated: 30 
• Conformers Submitted: 10 
• Selection Criteria: LOWEST ENERGY 
• OLDERADO: 2NR1 Olderado

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 1997-12-22 
• Released Date: 1998-04-29 
Deposition Author(s): Gesell, J.J., Sun, W., Montal, M., Opella, S.

Revision History 

• Version 1.0: 1998-04-29
  Type: Initial release
  
• Version 1.1: 2008-03-24
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance