2LJB

Structure of the influenza AM2-BM2 chimeric channel


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 75 
  • Conformers Submitted: 15 
  • Selection Criteria: structures with the lowest energy 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Structural investigation of rimantadine inhibition of the AM2-BM2 chimera channel of influenza viruses.

Pielak, R.M.Oxenoid, K.Chou, J.J.

(2011) Structure 19: 1655-1663

  • DOI: 10.1016/j.str.2011.09.003
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • The M2 channel of influenza A is a target of the adamantane family antiviral drugs. Two different drug-binding sites have been reported: one inside the pore, and the other is a lipid-facing pocket. A previous study showed that a chimera of M2 variant ...

    The M2 channel of influenza A is a target of the adamantane family antiviral drugs. Two different drug-binding sites have been reported: one inside the pore, and the other is a lipid-facing pocket. A previous study showed that a chimera of M2 variants from influenza A and B that contains only the pore-binding site is sensitive to amantadine inhibition, suggesting that the primary site of inhibition is inside the pore. To obtain atomic details of channel-drug interaction, we determined the structures of the chimeric channel with and without rimantadine. Inside the channel and near the N-terminal end, methyl groups of Val27 and Ala30 from four subunits form a hydrophobic pocket around the adamantane, and the drug amino group appears to be in polar contact with the backbone oxygen of Ala30. The structures also reveal differences between the drug-bound and -unbound states of the channel that can explain drug resistance.


    Organizational Affiliation

    Jack and Eileen Connors Structural Biology Laboratory, Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Boston, MA 02115, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
M2 protein, BM2 protein chimera
A, B, C, D
35Influenza A virus H3N2Influenza B virus
This entity is chimeric
Mutation(s): 1 
Gene Names: M, BM2
Membrane protein
mpstruct
Group: 
TRANSMEMBRANE PROTEINS: ALPHA-HELICAL
Sub Group: 
Channels: Other Ion Channels
Protein: 
M2A-M2B chimeric proton channel (AM2-BM2)
Find proteins for Q9YP62 (Influenza A virus H3N2)
Go to UniProtKB:  Q9YP62
Find proteins for B4UQM4 (Influenza B virus)
Go to UniProtKB:  B4UQM4
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 75 
  • Conformers Submitted: 15 
  • Selection Criteria: structures with the lowest energy 
  • Olderado: 2LJB Olderado

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2011-11-16
    Type: Initial release
  • Version 1.1: 2012-03-21
    Type: Database references