4NZL

Extracellular proteins of Staphylococcus aureus inhibit the neutrophil serine proteases


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.85 Å
  • R-Value Free: 0.207 
  • R-Value Work: 0.166 
  • R-Value Observed: 0.168 

wwPDB Validation 3D Report Full Report



Literature

Staphylococcus aureus secretes a unique class of neutrophil serine protease inhibitors.

Stapels, D.A.Ramyar, K.X.Bischoff, M.von Kockritz-Blickwede, M.Milder, F.J.Ruyken, M.Eisenbeis, J.McWhorter, W.J.Herrmann, M.van Kessel, K.P.Geisbrecht, B.V.Rooijakkers, S.H.

(2014) Proc Natl Acad Sci U S A 111: 13187-13192

  • DOI: 10.1073/pnas.1407616111
  • Primary Citation of Related Structures:  
    4NZL

  • PubMed Abstract: 
  • Neutrophils are indispensable for clearing infections with the prominent human pathogen Staphylococcus aureus. Here, we report that S. aureus secretes a family of proteins that potently inhibits the activity of neutrophil serine proteases (NSPs): neu ...

    Neutrophils are indispensable for clearing infections with the prominent human pathogen Staphylococcus aureus. Here, we report that S. aureus secretes a family of proteins that potently inhibits the activity of neutrophil serine proteases (NSPs): neutrophil elastase (NE), proteinase 3, and cathepsin G. The NSPs, but not related serine proteases, are specifically blocked by the extracellular adherence protein (Eap) and the functionally orphan Eap homologs EapH1 and EapH2, with inhibitory-constant values in the low-nanomolar range. Eap proteins are together essential for NSP inhibition by S. aureus in vitro and promote staphylococcal infection in vivo. The crystal structure of the EapH1/NE complex showed that Eap molecules constitute a unique class of noncovalent protease inhibitors that occlude the catalytic cleft of NSPs. These findings increase our insights into the complex pathogenesis of S. aureus infections and create opportunities to design novel treatment strategies for inflammatory conditions related to excessive NSP activity.


    Organizational Affiliation

    Medical Microbiology, University Medical Center Utrecht, 3584 CX, Utrecht, The Netherlands; s.h.m.rooijakkers@umcutrecht.nl.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Neutrophil elastaseA218Homo sapiensMutation(s): 0 
Gene Names: ELANEELA2
EC: 3.4.21.37
Find proteins for P08246 (Homo sapiens)
Explore P08246 
Go to UniProtKB:  P08246
NIH Common Fund Data Resources
PHAROS  P08246
Protein Feature View
Expand
 ( Mouse scroll to zoom / Hold left click to move )
  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Uncharacterized proteinB114Staphylococcus aureus subsp. aureus Mu50Mutation(s): 0 
Gene Names: SAV2205
Find proteins for A0A0H3K0M1 (Staphylococcus aureus (strain Mu50 / ATCC 700699))
Explore A0A0H3K0M1 
Go to UniProtKB:  A0A0H3K0M1
Protein Feature View
Expand
 ( Mouse scroll to zoom / Hold left click to move )
  • Reference Sequence
Oligosaccharides

Help

Entity ID: 3
MoleculeChainsChain Length2D Diagram Glycosylation
beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-[beta-L-fucopyranose-(1-6)]2-acetamido-2-deoxy-beta-D-glucopyranose
C, D
4 N-Glycosylation
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.85 Å
  • R-Value Free: 0.207 
  • R-Value Work: 0.166 
  • R-Value Observed: 0.168 
  • Space Group: P 61
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 94.952α = 90
b = 94.952β = 90
c = 84.162γ = 120
Software Package:
Software NamePurpose
MAR345data collection
PHASERphasing
PHENIXrefinement
HKL-2000data reduction
HKL-2000data scaling

Structure Validation

View Full Validation Report



Entry History 

Revision History 

  • Version 1.0: 2014-08-20
    Type: Initial release
  • Version 1.1: 2014-10-01
    Changes: Database references
  • Version 1.2: 2017-11-22
    Changes: Advisory, Refinement description
  • Version 2.0: 2020-07-29
    Type: Remediation
    Reason: Carbohydrate remediation
    Changes: Atomic model, Data collection, Database references, Derived calculations, Structure summary