5COR

X-RAY STRUCTURE OF MACROPHAGE INFLAMMATORY PROTEIN-1 ALPHA (CCL3) N-TERMINAL-SWITCH POLYMER

  • Classification: CYTOKINE
  • Organism(s): Homo sapiens
  • Expression System: Escherichia coli
  • Mutation(s): No 

  • Deposited: 2015-07-20 Released: 2016-04-13 
  • Deposition Author(s): Liang, W.G., Tang, W.
  • Funding Organization(s): National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.55 Å
  • R-Value Free: 0.220 
  • R-Value Work: 0.180 
  • R-Value Observed: 0.182 

wwPDB Validation   3D Report Full Report


This is version 1.4 of the entry. See complete history


Literature

Structural basis for oligomerization and glycosaminoglycan binding of CCL5 and CCL3.

Liang, W.G.Triandafillou, C.G.Huang, T.Y.Zulueta, M.M.Banerjee, S.Dinner, A.R.Hung, S.C.Tang, W.J.

(2016) Proc Natl Acad Sci U S A 113: 5000-5005

  • DOI: 10.1073/pnas.1523981113
  • Primary Citation of Related Structures:  
    5DNF, 5CMD, 5COY, 5COR, 5D65

  • PubMed Abstract: 
  • CC chemokine ligand 5 (CCL5) and CCL3 are critical for immune surveillance and inflammation. Consequently, they are linked to the pathogenesis of many inflammatory conditions and are therapeutic targets. Oligomerization and glycosaminoglycan (GAG) binding of CCL5 and CCL3 are vital for the functions of these chemokines ...

    CC chemokine ligand 5 (CCL5) and CCL3 are critical for immune surveillance and inflammation. Consequently, they are linked to the pathogenesis of many inflammatory conditions and are therapeutic targets. Oligomerization and glycosaminoglycan (GAG) binding of CCL5 and CCL3 are vital for the functions of these chemokines. Our structural and biophysical analyses of human CCL5 reveal that CCL5 oligomerization is a polymerization process in which CCL5 forms rod-shaped, double-helical oligomers. This CCL5 structure explains mutational data and offers a unified mechanism for CCL3, CCL4, and CCL5 assembly into high-molecular-weight, polydisperse oligomers. A conserved, positively charged BBXB motif is key for the binding of CC chemokines to GAG. However, this motif is partially buried when CCL3, CCL4, and CCL5 are oligomerized; thus, the mechanism by which GAG binds these chemokine oligomers has been elusive. Our structures of GAG-bound CCL5 and CCL3 oligomers reveal that these chemokine oligomers have distinct GAG-binding mechanisms. The CCL5 oligomer uses another positively charged and fully exposed motif, KKWVR, in GAG binding. However, residues from two partially buried BBXB motifs along with other residues combine to form a GAG-binding groove in the CCL3 oligomer. The N termini of CC chemokines are shown to be involved in receptor binding and oligomerization. We also report an alternative CCL3 oligomer structure that reveals how conformational changes in CCL3 N termini profoundly alter its surface properties and dimer-dimer interactions to affect GAG binding and oligomerization. Such complexity in oligomerization and GAG binding enables intricate, physiologically relevant regulation of CC chemokine functions.


    Related Citations: 
    • X-RAY STRUCTURE OF MACROPHAGE INFLAMMATORY PROTEIN-1 ALPHA (CCL3) N-TERMINAL-SWITCH POLYMER
      Liang, W.G., Tang, W.
      () To be published --: --

    Organizational Affiliation

    Ben May Department for Cancer Research, The University of Chicago, Chicago, IL 60637; schung@gate.sinica.edu.tw wtang@uchicago.edu.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
C-C motif chemokine 3
A, B, C, D, E, F, G, H
A, B, C, D, E, F, G, H, I, J
70Homo sapiensMutation(s): 0 
Gene Names: CCL3G0S19-1MIP1ASCYA3
Find proteins for P10147 (Homo sapiens)
Explore P10147 
Go to UniProtKB:  P10147
NIH Common Fund Data Resources
PHAROS:  P10147
Protein Feature View
Expand
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.55 Å
  • R-Value Free: 0.220 
  • R-Value Work: 0.180 
  • R-Value Observed: 0.182 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 57.073α = 90
b = 112.592β = 90
c = 179.074γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
HKL-3000data reduction
HKL-3000data scaling
PHENIXphasing

Structure Validation

View Full Validation Report



Entry History & Funding Information

Deposition Data

  • Deposited Date: 2015-07-20 
  • Released Date: 2016-04-13 
  • Deposition Author(s): Liang, W.G., Tang, W.

Funding OrganizationLocationGrant Number
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)United States--

Revision History  (Full details and data files)

  • Version 1.0: 2016-04-13
    Type: Initial release
  • Version 1.1: 2016-04-20
    Changes: Database references
  • Version 1.2: 2016-05-04
    Changes: Database references
  • Version 1.3: 2016-05-18
    Changes: Database references
  • Version 1.4: 2020-01-15
    Changes: Author supporting evidence, Database references, Derived calculations