2L0J

Solid State NMR structure of the M2 proton channel from Influenza A Virus in hydrated lipid bilayer


Experimental Data Snapshot

  • Method: SOLID-STATE NMR
  • Conformers Calculated: 
  • Conformers Submitted: 
  • Selection Criteria: structures with the least restraint violations 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Insight into the mechanism of the influenza a proton channel from a structure in a lipid bilayer.

Sharma, M.Yi, M.Dong, H.Qin, H.Peterson, E.Busath, D.D.Zhou, H.X.Cross, T.A.

(2010) Science 330: 509-512

  • DOI: 10.1126/science.1191750

  • PubMed Abstract: 
  • The M2 protein from the influenza A virus, an acid-activated proton-selective channel, has been the subject of numerous conductance, structural, and computational studies. However, little is known at the atomic level about the heart of the functional ...

    The M2 protein from the influenza A virus, an acid-activated proton-selective channel, has been the subject of numerous conductance, structural, and computational studies. However, little is known at the atomic level about the heart of the functional mechanism for this tetrameric protein, a His(37)-Trp(41) cluster. We report the structure of the M2 conductance domain (residues 22 to 62) in a lipid bilayer, which displays the defining features of the native protein that have not been attainable from structures solubilized by detergents. We propose that the tetrameric His(37)-Trp(41) cluster guides protons through the channel by forming and breaking hydrogen bonds between adjacent pairs of histidines and through specific interactions of the histidines with the tryptophan gate. This mechanism explains the main observations on M2 proton conductance.


    Organizational Affiliation

    Department of Chemistry and Biochemistry, Florida State University, Tallahassee, FL 32306, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Matrix protein 2
A, B, C, D
44Influenza A virus (strain A/Udorn/307/1972 H3N2)Mutation(s): 1 
Gene Names: M
Membrane protein
mpstruct
Group: 
TRANSMEMBRANE PROTEINS: ALPHA-HELICAL
Sub Group: 
Channels: Other Ion Channels
Protein: 
M2 proton channel (AM2)
Find proteins for P0DOF5 (Influenza A virus (strain A/Udorn/307/1972 H3N2))
Go to UniProtKB:  P0DOF5
Experimental Data & Validation

Experimental Data

  • Method: SOLID-STATE NMR
  • Conformers Calculated: 
  • Conformers Submitted: 
  • Selection Criteria: structures with the least restraint violations 
  • Olderado: 2L0J Olderado

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2010-11-03
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Version format compliance