1IV5

New Crystal Form of Human CD81 Large Extracellular Loop.


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.6 Å
  • R-Value Free: 0.282 
  • R-Value Work: 0.229 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Subunit Association and Conformational Flexibility in the Head-subdomain of Human CD81 Large Extracellular Loop.

Kitadokoro, K.Ponassi, M.Galli, G.Petracca, R.Falugi, F.Grandi, G.Bolognesi, M.

(2002) Biol.Chem. 383: 1447-1452

  • DOI: 10.1515/BC.2002.164
  • Also Cited By: 5M4R, 5M3T, 5M3D

  • PubMed Abstract: 
  • The large extracellular loop of human CD81, a tetraspanin mediating hepatitis C virus envelope protein E2 binding to human cells, has been crystallized in a hexagonal form. The three-dimensional structure, solved and refined at 2.6 A resolution (R-fa ...

    The large extracellular loop of human CD81, a tetraspanin mediating hepatitis C virus envelope protein E2 binding to human cells, has been crystallized in a hexagonal form. The three-dimensional structure, solved and refined at 2.6 A resolution (R-factor = 22.8%), shows that the protein adopts a dimeric assembly, based on an association interface built up by tetraspanin-conserved residues. Structural comparisons with the tertiary structure of human CD81 large extracellular loop, previously determined in a different crystal form, show marked conformational fluctuations in the molecular regions thought to be involved in binding to the viral protein, suggesting rules for recognition and assembly within the tetraspan web.


    Organizational Affiliation

    Department of Physics-INFM, Center of Excellence for Biomedical Research, University of Genoa, Italy.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
CD81 antigen
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: 2.6 Å
  • R-Value Free: 0.282 
  • R-Value Work: 0.229 
  • Space Group: P 64
Unit Cell:
Length (Å)Angle (°)
a = 102.052α = 90.00
b = 102.052β = 90.00
c = 35.283γ = 120.00
Software Package:
Software NamePurpose
EPMRphasing
REFMACrefinement
SCALEPACKdata scaling
DENZOdata reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2003-01-28
    Type: Initial release
  • Version 1.1: 2008-04-27
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance