Crystal Structure of Human Monocyte Chemoattractant Protein 4 (MCP-4/CCL13)

Experimental Data Snapshot

  • Resolution: 1.70 Å
  • R-Value Free: 0.216 
  • R-Value Work: 0.180 
  • R-Value Observed: 0.182 

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Structure of human monocyte chemoattractant protein 4 (MCP-4/CCL13).

Barinka, C.Prahl, A.Lubkowski, J.

(2008) Acta Crystallogr D Biol Crystallogr 64: 273-278

  • DOI: https://doi.org/10.1107/S0907444907066164
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 

    Monocyte chemoattractant proteins (MCPs) belong to the CC chemokine family and are involved in many (patho)physiological processes characterized by mononuclear cell infiltration, including tissue remodeling, atherosclerosis and cancer metastasis. Here, the crystal structure of human monocyte chemoattractant protein 4 (MCP-4) refined at 1.70 A resolution is reported with crystallographic values R = 0.180 and R free = 0.212. The overall MCP-4 fold reveals the typical tertiary features of the CC chemokine family. A central three-stranded antiparallel beta-sheet is C-terminally flanked by an overlaying alpha-helix, while the N-terminal part of the molecule forms an extended loop that is anchored to the rest of the molecule via two disulfide bridges, Cys11-Cys35 and Cys12-Cys51. The crystal packing suggests the existence of MCP-4 dimers with a dimerization interface similar to those previously reported for the X-ray structures of MCP-1 and MCP-2.

  • Organizational Affiliation

    National Cancer Institute at Frederick, Center for Cancer Research, Frederick, MD 21702, USA.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Small-inducible cytokine A13
A, B
76Homo sapiensMutation(s): 0 
Gene Names: CCL13MCP4NCC1SCYA13
UniProt & NIH Common Fund Data Resources
Find proteins for Q99616 (Homo sapiens)
Explore Q99616 
Go to UniProtKB:  Q99616
PHAROS:  Q99616
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ99616
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Resolution: 1.70 Å
  • R-Value Free: 0.216 
  • R-Value Work: 0.180 
  • R-Value Observed: 0.182 
  • Space Group: I 4
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 74.673α = 90
b = 74.673β = 90
c = 51.65γ = 90
Software Package:
Software NamePurpose
HKL-2000data collection
HKL-2000data reduction
HKL-2000data scaling

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2008-03-18
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Advisory, Version format compliance
  • Version 1.2: 2023-08-30
    Changes: Data collection, Database references, Derived calculations, Refinement description