4GGF

Crystal structure of Mn2+ bound calprotectin


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.6 Å
  • R-Value Free: 0.202 
  • R-Value Work: 0.177 

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.USA 110: 3841-3846

  • DOI: 10.1073/pnas.1220341110

  • 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 ...

    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: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Protein S100-A8
A, K, S, U
93Homo sapiensMutation(s): 0 
Gene Names: S100A8 (CAGA, CFAG, MRP8)
Find proteins for P05109 (Homo sapiens)
Go to Gene View: S100A8
Go to UniProtKB:  P05109
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Protein S100-A9
C, L, T, V
114Homo sapiensMutation(s): 0 
Gene Names: S100A9 (CAGB, CFAG, MRP14)
Find proteins for P06702 (Homo sapiens)
Go to Gene View: S100A9
Go to UniProtKB:  P06702
Small Molecules
Ligands 4 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
MN
Query on MN

Download SDF File 
Download CCD File 
C, L, T, V
MANGANESE (II) ION
Mn
WAEMQWOKJMHJLA-UHFFFAOYSA-N
 Ligand Interaction
SO4
Query on SO4

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

Download SDF File 
Download CCD File 
C, K, S, T
GLYCEROL
GLYCERIN; PROPANE-1,2,3-TRIOL
C3 H8 O3
PEDCQBHIVMGVHV-UHFFFAOYSA-N
 Ligand Interaction
CA
Query on CA

Download SDF File 
Download 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: 1.6 Å
  • R-Value Free: 0.202 
  • R-Value Work: 0.177 
  • Space Group: P 21 21 2
Unit Cell:
Length (Å)Angle (°)
a = 82.027α = 90.00
b = 217.002β = 90.00
c = 53.022γ = 90.00
Software Package:
Software NamePurpose
HKL-2000data collection
XDSdata reduction
REFMACrefinement
XDSdata scaling
PHASERphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

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

Revision History 

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