1GKG

Structure Determination and Rational Mutagenesis reveal binding surface of immune adherence receptor, CR1 (CD35)


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 120 
  • Conformers Submitted: 24 
  • Selection Criteria: LOWEST ENERGY 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Structure of the C3B Binding Site of Cr1 (Cd35), the Immune Adherence Receptor

Smith, B.Mallin, R.Krych-Goldberg, M.Wang, X.Hauhart, R.Bromek, K.Uhrin, D.Atkinson, J.Barlow, P.

(2002) Cell 108: 769

  • Primary Citation of Related Structures:  1GKN

  • PubMed Abstract: 
  • Complement receptor type 1 (CR1 or CD35) is a multiple modular protein that mediates the immune adherence phenomenon, a fundamental event for destroying microbes and initiating an immunological response. It fulfills this role through binding C3b/C4b- ...

    Complement receptor type 1 (CR1 or CD35) is a multiple modular protein that mediates the immune adherence phenomenon, a fundamental event for destroying microbes and initiating an immunological response. It fulfills this role through binding C3b/C4b-opsonized foreign antigens. The structure of the principal C3b/C4b binding site (residues 901-1095) of CR1 is reported, revealing three complement control protein modules (modules 15-17) in an extended head-to-tail arrangement with flexibility at the 16-17 junction. Structure-guided mutagenesis identified a positively charged surface region on module 15 that is critical for C4b binding. This patch, together with basic side chains of module 16 exposed on the same face of CR1, is required for C3b binding. These studies reveal the initial structural details of one of the first receptor-ligand interactions to be identified in immunobiology.


    Organizational Affiliation

    Edinburgh Protein Interaction Centre, Joseph Black Chemistry Building, University of Edinburgh, West Mains Road, Edinburgh EH9 3JR, United Kingdom.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
COMPLEMENT RECEPTOR TYPE 1
A
136Homo sapiensGene Names: CR1 (C3BR)
Find proteins for P17927 (Homo sapiens)
Go to Gene View: CR1
Go to UniProtKB:  P17927
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 120 
  • Conformers Submitted: 24 
  • Selection Criteria: LOWEST ENERGY 
  • Olderado: 1GKG Olderado

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2002-04-18
    Type: Initial release
  • Version 1.1: 2011-05-08
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance