1NYC

Staphostatins resemble lipocalins, not cystatins in fold.


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.4 Å
  • R-Value Free: 0.226 
  • R-Value Work: 0.201 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Staphostatins resemble lipocalins, not cystatins in fold.

Rzychon, M.Filipek, R.Sabat, A.Kosowska, K.Dubin, A.Potempa, J.Bochtler, M.

(2003) Protein Sci. 12: 2252-2256

  • DOI: 10.1110/ps.03247703

  • PubMed Abstract: 
  • Staphostatins are the endogenous inhibitors of the major secreted cysteine proteases of Staphylococcus aureus, the staphopains. Here, we present the 1.4 A crystal structure of staphostatin B and show that the fold can be described as a fully closed, ...

    Staphostatins are the endogenous inhibitors of the major secreted cysteine proteases of Staphylococcus aureus, the staphopains. Here, we present the 1.4 A crystal structure of staphostatin B and show that the fold can be described as a fully closed, highly sheared eight-stranded beta-barrel. Thus, staphostatin B is related to beta-barrel domains that are involved in the inhibition or regulation of proteases of various catalytic types and to the superfamily of lipocalins/cytosolic fatty acid binding proteins. Unexpectedly for a cysteine protease inhibitor, staphostatin B is not significantly similar to cystatins.


    Related Citations: 
    • Staphostatins: an expanding new group of proteinase inhibitors with a unique specificity for the regulation of staphopains, Staphylococcus spp. cysteine proteinases.
      Rzychon, M.,Sabat, A.,Kosowska, K.,Potempa, J.,Dubin, A.
      (2003) Mol.Microbiol. 49: 1051
    • Identification of a novel maturation mechanism and restricted substrate specificity for the SspB cysteine protease of Staphylococcus aureus
      Massimi, I.,Park, E.,Rice, K.,Mueller-Esterl, W.,Sauder, D.,McGavin, M.J.
      (2002) J.Biol.Chem. 277: 41770


    Organizational Affiliation

    International Institute of Molecular and Cell Biology, 02109 Warsaw, Poland.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
cysteine protease inhibitor
A, B
111Staphylococcus aureus (strain MW2)Gene Names: sspC
Find proteins for Q7A189 (Staphylococcus aureus (strain MW2))
Go to UniProtKB:  Q7A189
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
SO4
Query on SO4

Download SDF File 
Download CCD File 
A
SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
 Ligand Interaction
CL
Query on CL

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Download CCD File 
A
CHLORIDE ION
Cl
VEXZGXHMUGYJMC-UHFFFAOYSA-M
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.4 Å
  • R-Value Free: 0.226 
  • R-Value Work: 0.201 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 34.196α = 90.00
b = 77.049β = 90.00
c = 101.271γ = 90.00
Software Package:
Software NamePurpose
MLPHAREphasing
SCALEPACKdata scaling
REFMACrefinement
DENZOdata reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2003-09-30
    Type: Initial release
  • Version 1.1: 2008-04-29
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Source and taxonomy, Version format compliance