1G8Q

CRYSTAL STRUCTURE OF HUMAN CD81 EXTRACELLULAR DOMAIN, A RECEPTOR FOR HEPATITIS C VIRUS


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.6 Å
  • R-Value Free: 0.238 
  • R-Value Work: 0.188 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

CD81 extracellular domain 3D structure: insight into the tetraspanin superfamily structural motifs.

Kitadokoro, K.Bordo, D.Galli, G.Petracca, R.Falugi, F.Abrignani, S.Grandi, G.Bolognesi, M.

(2001) EMBO J. 20: 12-18

  • DOI: 10.1093/emboj/20.1.12
  • Also Cited By: 5M4R, 5M3T, 5M3D, 2AVZ

  • PubMed Abstract: 
  • Human CD81, a known receptor for hepatitis C virus envelope E2 glycoprotein, is a transmembrane protein belonging to the tetraspanin family. The crystal structure of human CD81 large extracellular domain is reported here at 1.6 A resolution. Each sub ...

    Human CD81, a known receptor for hepatitis C virus envelope E2 glycoprotein, is a transmembrane protein belonging to the tetraspanin family. The crystal structure of human CD81 large extracellular domain is reported here at 1.6 A resolution. Each subunit within the homodimeric protein displays a mushroom-like structure, composed of five alpha-helices arranged in 'stalk' and 'head' subdomains. Residues known to be involved in virus binding can be mapped onto the head subdomain, providing a basis for the design of antiviral drugs and vaccines. Sequence analysis of 160 tetraspanins indicates that key structural features and the new protein fold observed in the CD81 large extracellular domain are conserved within the family. On these bases, it is proposed that tetraspanins may assemble at the cell surface into homo- and/or hetero-dimers through a conserved hydrophobic interface located in the stalk subdomain, while interacting with other liganding proteins, including hepatitis C virus E2, through the head subdomain. The topology of such interactions provides a rationale for the assembly of the so-called tetraspan-web.


    Organizational Affiliation

    Department of Physics, INFM and Advanced Biotechnology Center, University of Genoa, Via Dodecaneso, 33, I-16146 Genova, Switzerland.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
CD81 ANTIGEN, EXTRACELLULAR DOMAIN
A, B
90Homo sapiensMutation(s): 0 
Gene Names: CD81 (TAPA1, TSPAN28)
Find proteins for P60033 (Homo sapiens)
Go to Gene View: CD81
Go to UniProtKB:  P60033
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.6 Å
  • R-Value Free: 0.238 
  • R-Value Work: 0.188 
  • Space Group: P 1 21 1
Unit Cell:
Length (Å)Angle (°)
a = 31.485α = 90.00
b = 77.172β = 107.39
c = 38.462γ = 90.00
Software Package:
Software NamePurpose
REFMACrefinement
SHARPphasing
SCALEPACKdata scaling
DENZOdata reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2001-02-21
    Type: Initial release
  • Version 1.1: 2008-04-27
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance
  • Version 1.3: 2018-04-04
    Type: Advisory, Data collection