1AIK

HIV GP41 CORE STRUCTURE


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2 Å
  • R-Value Free: 0.266 
  • R-Value Work: 0.238 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Core structure of gp41 from the HIV envelope glycoprotein.

Chan, D.C.Fass, D.Berger, J.M.Kim, P.S.

(1997) Cell 89: 263-273


  • PubMed Abstract: 
  • The envelope glycoprotein of human immunodeficiency virus type 1 (HIV-1) consists of a complex of gp120 and gp41. gp120 determines viral tropism by binding to target-cell receptors, while gp41 mediates fusion between viral and cellular membranes. Pre ...

    The envelope glycoprotein of human immunodeficiency virus type 1 (HIV-1) consists of a complex of gp120 and gp41. gp120 determines viral tropism by binding to target-cell receptors, while gp41 mediates fusion between viral and cellular membranes. Previous studies identified an alpha-helical domain within gp41 composed of a trimer of two interacting peptides. The crystal structure of this complex, composed of the peptides N36 and C34, is a six-helical bundle. Three N36 helices form an interior, parallel coiled-coil trimer, while three C34 helices pack in an oblique, antiparallel manner into highly conserved, hydrophobic grooves on the surface of this trimer. This structure shows striking similarity to the low-pH-induced conformation of influenza hemagglutinin and likely represents the core of fusion-active gp41. Avenues for the design/discovery of small-molecule inhibitors of HIV infection are directly suggested by this structure.


    Organizational Affiliation

    Whitehead Institute for Biomedical Research, Cambridge, Massachusetts 02142, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
HIV-1 GP41 GLYCOPROTEIN
N
37Human immunodeficiency virus type 1 group M subtype BGene Names: env
Find proteins for P04578 (Human immunodeficiency virus type 1 group M subtype B)
Go to UniProtKB:  P04578
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
HIV-1 GP41 GLYCOPROTEIN
C
35Human immunodeficiency virus type 1 group M subtype BGene Names: env
Find proteins for P04578 (Human immunodeficiency virus type 1 group M subtype B)
Go to UniProtKB:  P04578
Small Molecules
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
ACE
Query on ACE
C, N
NON-POLYMERC2 H4 O

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Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2 Å
  • R-Value Free: 0.266 
  • R-Value Work: 0.238 
  • Space Group: P 3 2 1
Unit Cell:
Length (Å)Angle (°)
a = 49.500α = 90.00
b = 49.500β = 90.00
c = 55.300γ = 120.00
Software Package:
Software NamePurpose
SCALEPACKdata scaling
X-PLORmodel building
X-PLORphasing
DENZOdata reduction
X-PLORrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1997-06-16
    Type: Initial release
  • Version 1.1: 2008-03-24
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Derived calculations, Version format compliance