1MP6 | pdb_00001mp6

Structure of the transmembrane region of the M2 protein H+ channel by solid state NMR spectroscopy

• PDB DOI: https://doi.org/10.2210/pdb1MP6/pdb

• Classification: MEMBRANE PROTEIN
• Organism(s): Influenza A virus (strain A/Udorn/307/1972 H3N2)
• Mutation(s): No 
• Membrane Protein: Yes  MemProtMD


• Deposited: 2002-09-11 Released: 2002-09-25 
• Deposition Author(s): Wang, J., Kim, S., Kovacs, F., Cross, T.A.

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Experimental Data Snapshot

• Method: SOLID-STATE NMR
• Conformers Calculated: 30 
• Conformers Submitted: 1 
• Selection Criteria: The lowest energy conformer with backbone and C beta atoms is deposited, preferred rotameric states of side chains were used during the backbone structure refinement but the side chain atoms were not included in the pdb file. 

Literature

Structure of the transmembrane region of the M2 protein H(+) channel.

Wang, J., Kim, S., Kovacs, F., Cross, T.A.

(2001) Protein Sci 10: 2241-2250

• PubMed: 11604531 
• DOI: https://doi.org/10.1110/ps.17901
• Primary Citation Related Structures: 
  1MP6


• PubMed Abstract: 
  

  The transmembrane domain of the M2 protein from influenza A virus forms a nearly uniform and ideal helix in a liquid crystalline bilayer environment. The exposure of the hydrophilic backbone structure is minimized through uniform hydrogen bond geometry imposed by the low dielectric lipid environment. A high-resolution structure of the monomer backbone and a detailed description of its orientation with respect to the bilayer were achieved using orientational restraints from solid-state NMR. With this unique information, the tetrameric structure of this H(+) channel is constrained substantially. Features of numerous published models are discussed in light of the experimental structure of the monomer and derived features of the tetrameric bundle.

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Organizational Affiliation: 
• Institute of Molecular Biophysics, Florida State University, Tallahassee, Florida 32310, USA.

Biological Assembly 1  

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

Biological assembly 1 assigned by authors.

Macromolecule Content 

• Total Structure Weight: 2.73 kDa 
• Atom Count: 124 
• Modeled Residue Count: 25 
• Deposited Residue Count: 25 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Matrix protein M2	A	25	N/A	Mutation(s): 0  Membrane Entity: Yes
UniProt
Find proteins for P0DOF5 (Influenza A virus (strain A/Udorn/307/1972 H3N2)) Explore P0DOF5  Go to UniProtKB:  P0DOF5

Experimental Data & Validation

Experimental Data

• Method: SOLID-STATE NMR
• Conformers Calculated: 30 
• Conformers Submitted: 1 
• Selection Criteria: The lowest energy conformer with backbone and C beta atoms is deposited, preferred rotameric states of side chains were used during the backbone structure refinement but the side chain atoms were not included in the pdb file. 

Structure Validation

Entry History 

Deposition Data

• Released Date: 2002-09-25 
Deposition Author(s): Wang, J., Kim, S., Kovacs, F., Cross, T.A.

Revision History  

• Version 1.0: 2002-09-25
  Type: Initial release
  
• Version 1.1: 2008-04-28
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance
• Version 1.3: 2022-02-23
  Changes: Database references, Derived calculations
• Version 1.4: 2024-05-22
  Changes: Data collection