2LP7

Structure of gp41-M-MAT, a membrane associated MPER trimer from HIV-1 gp41.


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 400 
  • Conformers Submitted: 11 
  • Selection Criteria: structures with the least restraint violations 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Structure of an HIV-1-neutralizing antibody target, the lipid-bound gp41 envelope membrane proximal region trimer.

Reardon, P.N.Sage, H.Dennison, S.M.Martin, J.W.Donald, B.R.Alam, S.M.Haynes, B.F.Spicer, L.D.

(2014) Proc Natl Acad Sci U S A 111: 1391-1396

  • DOI: 10.1073/pnas.1309842111
  • Primary Citation of Related Structures:  
    2LP7, 2M7W

  • PubMed Abstract: 
  • The membrane proximal external region (MPER) of HIV-1 glycoprotein (gp) 41 is involved in viral-host cell membrane fusion. It contains short amino acid sequences that are binding sites for the HIV-1 broadly neutralizing antibodies 2F5, 4E10, and 10E8 ...

    The membrane proximal external region (MPER) of HIV-1 glycoprotein (gp) 41 is involved in viral-host cell membrane fusion. It contains short amino acid sequences that are binding sites for the HIV-1 broadly neutralizing antibodies 2F5, 4E10, and 10E8, making these binding sites important targets for HIV-1 vaccine development. We report a high-resolution structure of a designed MPER trimer assembled on a detergent micelle. The NMR solution structure of this trimeric domain, designated gp41-M-MAT, shows that the three MPER peptides each adopt symmetric α-helical conformations exposing the amino acid side chains of the antibody binding sites. The helices are closely associated at their N termini, bend between the 2F5 and 4E10 epitopes, and gradually separate toward the C termini, where they associate with the membrane. The mAbs 2F5 and 4E10 bind gp41-M-MAT with nanomolar affinities, consistent with the substantial exposure of their respective epitopes in the trimer structure. The traditional structure determination of gp41-M-MAT using the Xplor-NIH protocol was validated by independently determining the structure using the DISCO sparse-data protocol, which exploits geometric arrangement algorithms that guarantee to compute all structures and assignments that satisfy the data.


    Organizational Affiliation

    Department of Biochemistry, Duke Human Vaccine Institute, Duke Department of Medicine, and Department of Radiology, Duke University School of Medicine, Durham, NC 27710.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Envelope glycoproteinABC59Human immunodeficiency virus 1Mutation(s): 0 
Find proteins for M1E1E4 (Human immunodeficiency virus 1)
Explore M1E1E4 
Go to UniProtKB:  M1E1E4
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 400 
  • Conformers Submitted: 11 
  • Selection Criteria: structures with the least restraint violations 
  • OLDERADO: 2LP7 Olderado

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

  • Deposited Date: 2012-02-03 
  • Released Date: 2013-02-06 
  • Deposition Author(s): Reardon, P.N.

Revision History 

  • Version 1.0: 2013-02-06
    Type: Initial release
  • Version 1.1: 2014-01-15
    Changes: Database references
  • Version 1.2: 2014-03-05
    Changes: Database references