1NYC

Staphostatins resemble lipocalins, not cystatins in fold.


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.40 Å
  • R-Value Free: 0.226 
  • R-Value Work: 0.201 
  • R-Value Observed: 0.202 

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
  • Structures With Same Primary Citation

  • 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: 
    • 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
    • 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

    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 inhibitorA, B111Staphylococcus aureus subsp. aureus MW2Mutation(s): 0 
Gene Names: staphostatin B (sspC)sspCMW0930
Find proteins for Q7A189 (Staphylococcus aureus (strain MW2))
Explore Q7A189 
Go to UniProtKB:  Q7A189
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
SO4
Query on SO4

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

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

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.40 Å
  • R-Value Free: 0.226 
  • R-Value Work: 0.201 
  • R-Value Observed: 0.202 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 34.196α = 90
b = 77.049β = 90
c = 101.271γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
DENZOdata reduction
SCALEPACKdata scaling
MLPHAREphasing

Structure Validation

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Entry History 

Deposition Data

Revision History 

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