4GGF

Crystal structure of Mn2+ bound calprotectin


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.60 Å
  • R-Value Free: 0.202 
  • R-Value Work: 0.177 
  • R-Value Observed: 0.178 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Molecular basis for manganese sequestration by calprotectin and roles in the innate immune response to invading bacterial pathogens.

Damo, S.M.Kehl-Fie, T.E.Sugitani, N.Holt, M.E.Rathi, S.Murphy, W.J.Zhang, Y.Betz, C.Hench, L.Fritz, G.Skaar, E.P.Chazin, W.J.

(2013) Proc Natl Acad Sci U S A 110: 3841-3846

  • DOI: 10.1073/pnas.1220341110
  • Primary Citation of Related Structures:  
    4GGF

  • PubMed Abstract: 
  • The S100A8/S100A9 heterodimer calprotectin (CP) functions in the host response to pathogens through a mechanism termed "nutritional immunity." CP binds Mn(2+) and Zn(2+) with high affinity and starves bacteria of these essential nutrients. Combining biophysical, structural, and microbiological analysis, we identified the molecular basis of Mn(2+) sequestration ...

    The S100A8/S100A9 heterodimer calprotectin (CP) functions in the host response to pathogens through a mechanism termed "nutritional immunity." CP binds Mn(2+) and Zn(2+) with high affinity and starves bacteria of these essential nutrients. Combining biophysical, structural, and microbiological analysis, we identified the molecular basis of Mn(2+) sequestration. The asymmetry of the CP heterodimer creates a single Mn(2+)-binding site from six histidine residues, which distinguishes CP from all other Mn(2+)-binding proteins. Analysis of CP mutants with altered metal-binding properties revealed that, despite both Mn(2+) and Zn(2+) being essential metals, maximal growth inhibition of multiple bacterial pathogens requires Mn(2+) sequestration. These data establish the importance of Mn(2+) sequestration in defense against infection, explain the broad-spectrum antimicrobial activity of CP relative to other S100 proteins, and clarify the impact of metal depletion on the innate immune response to infection.


    Organizational Affiliation

    Department of Biochemistry, and Center for Structural Biology, Vanderbilt University, Nashville, TN 37232-8725, USA.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Protein S100-A8 AKSU93Homo sapiensMutation(s): 0 
Gene Names: S100A8CAGACFAGMRP8
Find proteins for P05109 (Homo sapiens)
Explore P05109 
Go to UniProtKB:  P05109
NIH Common Fund Data Resources
PHAROS:  P05109
Protein Feature View
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Protein S100-A9 CLTV114Homo sapiensMutation(s): 0 
Gene Names: S100A9CAGBCFAGMRP14
Find proteins for P06702 (Homo sapiens)
Explore P06702 
Go to UniProtKB:  P06702
NIH Common Fund Data Resources
PHAROS:  P06702
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 4 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
SO4
Query on SO4

Download Ideal Coordinates CCD File 
K, L, V
SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
 Ligand Interaction
GOL
Query on GOL

Download Ideal Coordinates CCD File 
C, K, S, T
GLYCEROL
C3 H8 O3
PEDCQBHIVMGVHV-UHFFFAOYSA-N
 Ligand Interaction
MN
Query on MN

Download Ideal Coordinates CCD File 
C, L, T, V
MANGANESE (II) ION
Mn
WAEMQWOKJMHJLA-UHFFFAOYSA-N
 Ligand Interaction
CA
Query on CA

Download Ideal Coordinates CCD File 
A, C, K, L, S, T, U, V
CALCIUM ION
Ca
BHPQYMZQTOCNFJ-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.60 Å
  • R-Value Free: 0.202 
  • R-Value Work: 0.177 
  • R-Value Observed: 0.178 
  • Space Group: P 21 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 82.027α = 90
b = 217.002β = 90
c = 53.022γ = 90
Software Package:
Software NamePurpose
HKL-2000data collection
PHASERphasing
REFMACrefinement
XDSdata reduction
XDSdata scaling

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

  • Deposited Date: 2012-08-06 
  • Released Date: 2013-02-20 
  • Deposition Author(s): Damo, S.M., Fritz, G.

Revision History  (Full details and data files)

  • Version 1.0: 2013-02-20
    Type: Initial release
  • Version 1.1: 2013-03-06
    Changes: Database references
  • Version 1.2: 2013-03-27
    Changes: Database references