2BDN

Crystal structure of human MCP-1 bound to a blocking antibody, 11K2


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.53 Å
  • R-Value Free: 0.277 
  • R-Value Work: 0.219 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

Structure activity relationships of monocyte chemoattractant proteins in complex with a blocking antibody.

Reid, C.Rushe, M.Jarpe, M.van Vlijmen, H.Dolinski, B.Qian, F.Cachero, T.G.Cuervo, H.Yanachkova, M.Nwankwo, C.Wang, X.Etienne, N.Garber, E.Bailly, V.de Fougerolles, A.Boriack-Sjodin, P.A.

(2006) Protein Eng.Des.Sel. 19: 317-324

  • DOI: 10.1093/protein/gzl015

  • PubMed Abstract: 
  • Monocyte chemoattractant proteins (MCPs) are cytokines that direct immune cells bearing appropriate receptors to sites of inflammation or injury and are therefore attractive therapeutic targets for inhibitory molecules. 11K2 is a blocking mouse monoc ...

    Monocyte chemoattractant proteins (MCPs) are cytokines that direct immune cells bearing appropriate receptors to sites of inflammation or injury and are therefore attractive therapeutic targets for inhibitory molecules. 11K2 is a blocking mouse monoclonal antibody active against several human and murine MCPs. A 2.5 A structure of the Fab fragment of this antibody in complex with human MCP-1 has been solved. The Fab blocks CCR2 receptor binding to MCP-1 through an adjacent but distinct binding site. The orientation of the Fab indicates that a single MCP-1 dimer will bind two 11K2 antibodies. Several key residues on the antibody and on human MCPs were predicted to be involved in antibody selectivity. Mutational analysis of these residues confirms their involvement in the antibody-chemokine interaction. In addition to mutations that decreased or disrupted binding, one antibody mutation resulted in a 70-fold increase in affinity for human MCP-2. A key residue missing in human MCP-3, a chemokine not recognized by the antibody, was identified and engineering the preferred residue into the chemokine conferred binding to the antibody.


    Organizational Affiliation

    Department of Research, Biogen Idec, Inc. 12 Cambridge Center, Cambridge, MA 02142, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Small inducible cytokine A2
A
76Homo sapiensMutation(s): 0 
Gene Names: CCL2 (MCP1, SCYA2)
Find proteins for P13500 (Homo sapiens)
Go to Gene View: CCL2
Go to UniProtKB:  P13500
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Antibody light chain 11K2
L
214N/AMutation(s): 0 
Protein Feature View is not available: No corresponding UniProt sequence found.
Entity ID: 3
MoleculeChainsSequence LengthOrganismDetails
Antibody heavy chain 11K2
H
217N/AMutation(s): 0 
Protein Feature View is not available: No corresponding UniProt sequence found.
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.53 Å
  • R-Value Free: 0.277 
  • R-Value Work: 0.219 
  • Space Group: C 2 2 21
Unit Cell:
Length (Å)Angle (°)
a = 86.360α = 90.00
b = 89.100β = 90.00
c = 176.240γ = 90.00
Software Package:
Software NamePurpose
DENZOdata reduction
AMoREphasing
PDB_EXTRACTdata extraction
CNXrefinement
SCALEPACKdata scaling
CNSrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2006-06-13
    Type: Initial release
  • Version 1.1: 2008-05-01
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance
  • Version 1.3: 2018-01-24
    Type: Structure summary