2PSR

HUMAN PSORIASIN (S100A7) CA2+ AND ZN2+ BOUND FORM (CRYSTAL FORM II)


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.05 Å
  • R-Value Free: 0.265 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Zinc-binding site of an S100 protein revealed. Two crystal structures of Ca2+-bound human psoriasin (S100A7) in the Zn2+-loaded and Zn2+-free states.

Brodersen, D.E.Nyborg, J.Kjeldgaard, M.

(1999) Biochemistry 38: 1695-1704

  • DOI: 10.1021/bi982483d
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • The crystal structure of human psoriasin (S100A7) in the native, calcium-bound form has been determined from two crystal forms of the protein crystallized with and without divalent zinc. The overall structures of the dimeric protein closely resemble ...

    The crystal structure of human psoriasin (S100A7) in the native, calcium-bound form has been determined from two crystal forms of the protein crystallized with and without divalent zinc. The overall structures of the dimeric protein closely resemble the previously determined holmium-substituted structure. The structures also reveal a zinc-binding site of the protein, which is formed by three histidines and an aspartate residue. Together, these residues coordinate the zinc ion in a way similar to the pattern seen in certain metalloproteases and in particular the collagenase family of proteins. Sequence comparison suggests that this zinc site is present in a number of the remaining members of the S100 family. The structure of S100A7 crystallized in the absence of zinc further shows that loss of zinc results in a reorganization of the adjacent empty and distorted EF-hand loop, causing it to resemble a calcium-loaded EF-hand.


    Related Citations: 
    • Molecular Cloning, Occurrence, and Expression of a Novel Partially Secreted Protein "Psoriasin" that is Highly Up-Regulated in Psoriatic Skin
      Madsen, P.,Rasmussen, H.H.,Leffers, H.,Honore, B.,Dejgaard, K.,Olsen, E.,Kiil, J.,Walbum, E.,Andersen, A.H.,Basse, B.,Lauridsen, J.B.,Ratz, G.P.,Celis, A.,Vandekerckhove, J.,Celis, J.E.
      (1991) J.Invest.Dermatol. 97: 701
    • EF-Hands at Atomic Resolution: The Structure of Human Psoriasin (S100A7) Solved by MAD Phasing
      Brodersen, D.E.,Etzerodt, M.,Madsen, P.,Celis, J.E.,Thogersen, H.C.,Nyborg, J.,Kjeldgaard, M.
      (1998) Structure 6: 477
    • Crystallization and Preliminary X-Ray Diffraction Studies of Psoriasin
      Nolsoe, S.,Thirup, S.,Etzerodt, M.,Thogersen, H.C.,Nyborg, J.
      (1997) Acta Crystallogr.,Sect.D 53: 119


    Organizational Affiliation

    Macromolecular Crystallography, Institute of Molecular and Structural Biology, Aarhus University, Denmark.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
PSORIASIN
A
100Homo sapiensMutation(s): 0 
Gene Names: S100A7 (PSOR1, S100A7C)
Find proteins for P31151 (Homo sapiens)
Go to Gene View: S100A7
Go to UniProtKB:  P31151
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ZN
Query on ZN

Download SDF File 
Download CCD File 
A
ZINC ION
Zn
PTFCDOFLOPIGGS-UHFFFAOYSA-N
 Ligand Interaction
CA
Query on CA

Download SDF File 
Download CCD File 
A
CALCIUM ION
Ca
BHPQYMZQTOCNFJ-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.05 Å
  • R-Value Free: 0.265 
  • Space Group: P 43 21 2
Unit Cell:
Length (Å)Angle (°)
a = 51.958α = 90.00
b = 51.958β = 90.00
c = 116.027γ = 90.00
Software Package:
Software NamePurpose
DENZOdata reduction
SHELXL-97refinement
AMoREphasing
SCALEPACKdata scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1999-06-15
    Type: Initial release
  • Version 1.1: 2008-03-25
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Derived calculations, Version format compliance