1G44

CRYSTAL STRUCTURE OF A COMPLEMENT CONTROL PROTEIN THAT REGULATES BOTH PATHWAYS OF COMPLEMENT ACTIVATION AND BINDS HEPARAN SULFATE PROTEOGLYCANS


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.6 Å
  • R-Value Free: 0.236 
  • R-Value Work: 0.204 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Crystal structure of a complement control protein that regulates both pathways of complement activation and binds heparan sulfate proteoglycans.

Murthy, K.H.Smith, S.A.Ganesh, V.K.Judge, K.W.Mullin, N.Barlow, P.N.Ogata, C.M.Kotwal, G.J.

(2001) Cell 104: 301-311

  • Primary Citation of Related Structures:  1G40

  • PubMed Abstract: 
  • Vaccinia virus complement control protein (VCP) inhibits both pathways of complement activation through binding the third and fourth components. A homolog of mammalian regulators of complement activation, its ability to bind heparin endows VCP with a ...

    Vaccinia virus complement control protein (VCP) inhibits both pathways of complement activation through binding the third and fourth components. A homolog of mammalian regulators of complement activation, its ability to bind heparin endows VCP with additional activities of significance to viral infectivity. The structure of VCP reveals a highly extended molecule with a putative heparin recognition site at its C-terminal end. A second cluster of positive charges provides a possibly overlapping binding site for both heparin and complement components. Experiments suggested by the structure indicate that VCP can bind heparin and control complement simultaneously. This, the structure of any intact regulator of complement activation, along with attendant functional insights, will stimulate the design of new therapeutic inhibitors of complement.


    Organizational Affiliation

    Center for Biophysical Science and Engineering, University of Alabama at Birmingham, 1918 University Boulevard, Birmingham, AL 35294, USA. murthy@onyx.cmc.uab.edu




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
COMPLEMENT CONTROL PROTEIN
A, B, C
244Vaccinia virus (strain Western Reserve)N/A
Find proteins for P68638 (Vaccinia virus (strain Western Reserve))
Go to UniProtKB:  P68638
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.6 Å
  • R-Value Free: 0.236 
  • R-Value Work: 0.204 
  • Space Group: C 2 2 2
Unit Cell:
Length (Å)Angle (°)
a = 99.200α = 90.00
b = 110.300β = 90.00
c = 268.700γ = 90.00
Software Package:
Software NamePurpose
d*TREKdata scaling
SDMSdata reduction
SDMSdata collection
SOLVEphasing
d*TREKdata reduction
X-PLORrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2001-02-07
    Type: Initial release
  • Version 1.1: 2008-04-27
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance