1DF4

INTERACTIONS BETWEEN HIV-1 GP41 CORE AND DETERGENTS AND THEIR IMPLICATIONS FOR MEMBRANE FUSION


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.45 Å
  • R-Value Free: 0.245 
  • R-Value Work: 0.200 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

Interactions between HIV-1 gp41 core and detergents and their implications for membrane fusion.

Shu, W.Ji, H.Lu, M.

(2000) J.Biol.Chem. 275: 1839-1845

  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • The gp41 envelope protein mediates entry of human immunodeficiency virus type 1 (HIV-1) into the cell by promoting membrane fusion. The crystal structure of a gp41 ectodomain core in its fusion-active state is a six-helix bundle in which a N-terminal ...

    The gp41 envelope protein mediates entry of human immunodeficiency virus type 1 (HIV-1) into the cell by promoting membrane fusion. The crystal structure of a gp41 ectodomain core in its fusion-active state is a six-helix bundle in which a N-terminal trimeric coiled coil is surrounded by three C-terminal outer helices in an antiparallel orientation. Here we demonstrate that the N34(L6)C28 model of the gp41 core is stabilized by interaction with the ionic detergent sodium dodecyl sulfate (SDS) or the nonionic detergent n-octyl-beta-D-glucopyranoside (betaOG). The high resolution x-ray structures of N34(L6)C28 crystallized from two different detergent micellar media reveal a six-helix bundle conformation very similar to that of the molecule in water. Moreover, N34(L6)C28 adopts a highly alpha-helical conformation in lipid vesicles. Taken together, these results suggest that the six-helix bundle of the gp41 core displays substantial affinity for lipid bilayers rather than unfolding in the membrane environment. This characteristic may be important for formation of the fusion-active gp41 core structure and close apposition of the viral and cellular membranes for fusion.


    Organizational Affiliation

    Department of Biochemistry, Weill Medical College of Cornell University, New York, New York, 10021, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
HIV-1 ENVELOPE GLYCOPROTEIN GP41
A
68Human immunodeficiency virus type 1 group M subtype BMutation(s): 0 
Gene Names: env
Find proteins for P04578 (Human immunodeficiency virus type 1 group M subtype B)
Go to UniProtKB:  P04578
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.45 Å
  • R-Value Free: 0.245 
  • R-Value Work: 0.200 
  • Space Group: H 3
Unit Cell:
Length (Å)Angle (°)
a = 52.383α = 90.00
b = 52.383β = 90.00
c = 60.982γ = 120.00
Software Package:
Software NamePurpose
SCALEPACKdata scaling
DENZOdata reduction
REFMACrefinement
AMoREphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

  • Deposited Date: 1999-11-17 
  • Released Date: 1999-11-24 
  • Deposition Author(s): Shu, W., Ji, H., Lu, M.

Revision History 

  • Version 1.0: 1999-11-24
    Type: Initial release
  • Version 1.1: 2008-04-27
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Derived calculations, Version format compliance
  • Version 1.3: 2017-08-09
    Type: Refinement description, Source and taxonomy