1SZT

ATOMIC STRUCTURE OF A THERMOSTABLE SUBDOMAIN OF HIV-1 GP41


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.4 Å
  • R-Value Free: 0.269 
  • R-Value Work: 0.208 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Atomic structure of a thermostable subdomain of HIV-1 gp41.

Tan, K.Liu, J.Wang, J.Shen, S.Lu, M.

(1997) Proc.Natl.Acad.Sci.USA 94: 12303-12308

  • DOI: 10.1073/pnas.94.23.12303
  • Also Cited By: 1CE0

  • PubMed Abstract: 
  • Infection by HIV-1 involves the fusion of viral and cellular membranes with subsequent transfer of viral genetic material into the cell. The HIV-1 envelope glycoprotein that mediates fusion consists of the surface subunit gp120 and the transmembrane ...

    Infection by HIV-1 involves the fusion of viral and cellular membranes with subsequent transfer of viral genetic material into the cell. The HIV-1 envelope glycoprotein that mediates fusion consists of the surface subunit gp120 and the transmembrane subunit gp41. gp120 directs virion attachment to the cell-surface receptors, and gp41 then promotes viral-cell membrane fusion. A soluble, alpha-helical, trimeric complex within gp41 composed of N-terminal and C-terminal extraviral segments has been proposed to represent the core of the fusion-active conformation of the HIV-1 envelope. A thermostable subdomain denoted N34(L6)C28 can be formed by the N-34 and C-28 peptides connected by a flexible linker in place of the disulfide-bonded loop region. Three-dimensional structure of N34(L6)C28 reveals that three molecules fold into a six-stranded helical bundle. Three N-terminal helices within the bundle form a central, parallel, trimeric coiled coil, whereas three C-terminal helices pack in the reverse direction into three hydrophobic grooves on the surface of the N-terminal trimer. This thermostable subdomain displays the salient features of the core structure of the isolated gp41 subunit and thus provides a possible target for therapeutics designed selectively to block HIV-1 entry.


    Related Citations: 
    • Core Structure of Gp41 from the HIV Envelope Glycoprotein
      Chan, D.C.,Fass, D.,Berger, J.M.,Kim, P.S.
      (1997) Cell 89: 263
    • Atomic Structure of the Ectodomain from HIV-1 Gp41
      Weissenhorn, W.,Dessen, A.,Harrison, S.C.,Skehel, J.J.,Wiley, D.C.
      (1997) Nature 387: 426
    • A Trimeric Structural Domain of the HIV-1 Transmembrane Glycoprotein
      Lu, M.,Blacklow, S.C.,Kim, P.S.
      (1995) Nat.Struct.Mol.Biol. 2: 1075


    Organizational Affiliation

    Laboratory of Immunobiology, Dana-Farber Cancer Institute, Boston, MA 02115, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
HIV-1 ENVELOPE GLYCOPROTEIN GP41
A
68Human immunodeficiency virus 1Mutation(s): 0 
Gene Names: env
Find proteins for Q3I1N2 (Human immunodeficiency virus 1)
Go to UniProtKB:  Q3I1N2
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.4 Å
  • R-Value Free: 0.269 
  • R-Value Work: 0.208 
  • Space Group: H 3
Unit Cell:
Length (Å)Angle (°)
a = 53.070α = 90.00
b = 53.070β = 90.00
c = 60.580γ = 120.00
Software Package:
Software NamePurpose
DENZOdata reduction
X-PLORmodel building
X-PLORphasing
SCALEPACKdata scaling
X-PLORrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1997-12-24
    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