1VVC

C-TERMINAL HALF OF VACCINIA VIRUS COMPLEMENT CONTROL PROTEIN, NMR, MINIMIZED AVERAGE STRUCTURE


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 50 
  • Conformers Submitted: 
  • Selection Criteria: < 2 NOE VIOLATIONS > 0.5 A; NO DIHEDRAL ANGLE VIOLATIONS > 5 DEGREES 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

NMR studies of a viral protein that mimics the regulators of complement activation.

Wiles, A.P.Shaw, G.Bright, J.Perczel, A.Campbell, I.D.Barlow, P.N.

(1997) J Mol Biol 272: 253-265

  • DOI: 10.1006/jmbi.1997.1241
  • Primary Citation of Related Structures:  
    1VVE, 1VVD, 1VVC

  • PubMed Abstract: 
  • Vaccinia virus complement control protein (VCP) is a 243-residue protein that is similar in sequence to the regulators of complement activation; its role is to defend the virus against attack by the host complement system. A fragment of this protein spanning the two complement protein (CP)-modules (residues 126 to 243) which make up the C-terminal half of VCP has been expressed in Pichia pastoris ...

    Vaccinia virus complement control protein (VCP) is a 243-residue protein that is similar in sequence to the regulators of complement activation; its role is to defend the virus against attack by the host complement system. A fragment of this protein spanning the two complement protein (CP)-modules (residues 126 to 243) which make up the C-terminal half of VCP has been expressed in Pichia pastoris. A 15N-labelled sample was purified for the purposes of structure determination and measurements of dynamics in solution using NMR. Structures were calculated on the basis of 1767 NMR-derived distance and angle restraints, with a longer than normal high-temperature simulated annealing (SA) protocol which improved convergence. The viral CP-modules are structurally very similar to the 15th and 16th CP-modules of human factor H (fH; average r.m.s.d., for invariant Trp and Cys, four pair-wise comparisons,=1.2 A) but less similar to the fifth CP-module of fH (average r.m.s.d.=2.2 A). In the VCP fragment, the orientation of one module with respect to the other is clearly defined by the experimental data, and T1 measurements are consistent with only limited flexibility at the module-module interface. The r.m.s.d. over all of the 118 residues (backbone atoms) is 0.73 A. The intermodular orientation is better defined than, and significantly different from, that observed in a CP-module pair from fH (re-calculated using the extended SA protocol). In VCP the long axis of the second module is tilted by 59(+/-4) degrees with respect to the first module (50(+/-13) degrees in the fH pair), and twisted with respect to the first module by 22(+/-6) degrees (223(+/-17) degrees in fH). The differences between the human and viral proteins may be rationalised in terms of the lack of hydrogen-bond stabilised secondary structure in the N-terminal portion of fH module 16, and the number and type of amino acid side-chains which make up the interface. A similar intermodular interface may be predicted between the third and fourth module of human C4 binding protein and, probably, between the third and fourth modules of the guinea pig acrosomal matrix protein 67; but the formulation of general rules for predicting the structure of interfaces between CP-modules awaits further experimental data.


    Organizational Affiliation

    The Edinburgh Centre for Protein Technology, The University of Edinburgh The James Black Building The King's Buildings, West Mains Road, Edinburgh, EH9 3JJ, UK.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
VACCINIA VIRUS COMPLEMENT CONTROL PROTEINA118Vaccinia virusMutation(s): 0 
Gene Names: C21L
UniProt
Find proteins for P68638 (Vaccinia virus (strain Western Reserve))
Explore P68638 
Go to UniProtKB:  P68638
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 50 
  • Conformers Submitted: 
  • Selection Criteria: < 2 NOE VIOLATIONS > 0.5 A; NO DIHEDRAL ANGLE VIOLATIONS > 5 DEGREES 
  • OLDERADO: 1VVC Olderado

Structure Validation

View Full Validation Report




Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 1997-12-03
    Type: Initial release
  • Version 1.1: 2008-03-24
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance