Biological Assembly 1  

 3D View: Structure | 1D-3D View | Validation Report | Predict Membrane 

Global Symmetry: Cyclic - C4  (3D View)
Global Stoichiometry: Homo 4-mer - A4 

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 7.83 kDa 
• Atom Count: 552 
• Modelled Residue Count: 72 
• Deposited Residue Count: 72 
• Unique protein chains: 1

2H95

Structure of the Amantadine-Blocked Influenza A M2 Proton Channel Trans-membrane Domain by Solid-state NMR spectroscopy

• PDB DOI: 10.2210/pdb2H95/pdb

• Classification: MEMBRANE PROTEIN
• Mutation(s): No 
• Membrane Protein: Yes  MemProtMD


• Deposited: 2006-06-08 Released: 2007-04-24 
• Deposition Author(s): Hu, J., Asbury, T., Cross, T.A.

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Experimental Data Snapshot

• Method: SOLID-STATE NMR
• Conformers Calculated: 72 
• Conformers Submitted: 1 
• Selection Criteria: structures with the lowest energy 

Re-refinement Note

A newer entry is available that reflects an alternative modeling of the original data: 2KQT

Literature

Backbone structure of the amantadine-blocked trans-membrane domain m2 proton channel from influenza a virus.

Hu, J., Asbury, T., Achuthan, S., Li, C., Bertram, R., Quine, J.R., Fu, R., Cross, T.A.

(2007) Biophys J 92: 4335-4343

• PubMed: 17384070 
• DOI: 10.1529/biophysj.106.090183
• Primary Citation of Related Structures:  
  2H95


• PubMed Abstract: 
  

Amantadine is known to block the M2 proton channel of the Influenza A virus. Here, we present a structure of the M2 trans-membrane domain blocked with amantadine, built using orientational constraints obtained from solid-state NMR polarization-inversion-spin-exchange-at-the-magic-angle experiments. The data indicates a kink in the monomer between two helical fragments having 20 degrees and 31 degrees tilt angles with respect to the membrane normal. This monomer structure is then used to construct a plausible model of the tetrameric amantadine-blocked M2 trans-membrane channel. The influence of amantadine binding through comparative cross polarization magic-angle spinning spectra was also observed. In addition, spectra are shown of the amantadine-resistant mutant, S31N, in the presence and absence of amantadine.

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Organizational Affiliation: 

The National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, Maryland, USA.

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Matrix protein 2	A, B, C, D	18	N/A	Mutation(s): 0  Membrane Entity: Yes
UniProt
Find proteins for Q3LZC0 (Influenza A virus) Explore Q3LZC0  Go to UniProtKB:  Q3LZC0

Experimental Data & Validation

Experimental Data

• Method: SOLID-STATE NMR
• Conformers Calculated: 72 
• Conformers Submitted: 1 
• Selection Criteria: structures with the lowest energy 
• OLDERADO: 2H95 Olderado

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2006-06-08 
• Released Date: 2007-04-24 
Deposition Author(s): Hu, J., Asbury, T., Cross, T.A.

Revision History  

• Version 1.0: 2007-04-24
  Type: Initial release
  
• Version 1.1: 2008-05-01
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance
• Version 1.3: 2022-03-09
  Changes: Data collection, Database references, Derived calculations