2.0 A crystal structure of Staphylococcus aureus Sortase B

Experimental Data Snapshot

  • Resolution: 2.00 Å
  • R-Value Free: 0.248 
  • R-Value Work: 0.237 
  • R-Value Observed: 0.237 

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This is version 1.4 of the entry. See complete history


Structures of sortase B from Staphylococcus aureus and Bacillus anthracis reveal catalytic amino acid triad in the active site.

Zhang, R.Wu, R.Joachimiak, G.Mazmanian, S.K.Missiakas, D.M.Gornicki, P.Schneewind, O.Joachimiak, A.

(2004) Structure 12: 1147-1156

  • DOI: https://doi.org/10.1016/j.str.2004.06.001
  • Primary Citation of Related Structures:  
    1NG5, 1RZ2

  • PubMed Abstract: 

    Surface proteins attached by sortases to the cell wall envelope of bacterial pathogens play important roles during infection. Sorting and attachment of these proteins is directed by C-terminal signals. Sortase B of S. aureus recognizes a motif NPQTN, cleaves the polypeptide after the Thr residue, and attaches the protein to pentaglycine cross-bridges. Sortase B of B. anthracis is thought to recognize the NPKTG motif, and attaches surface proteins to m-diaminopimelic acid cross-bridges. We have determined crystal structure of sortase B from B. anthracis and S. aureus at 1.6 and 2.0 A resolutions, respectively. These structures show a beta-barrel fold with alpha-helical elements on its outside, a structure thus far exclusive to the sortase family. A putative active site located on the edge of the beta-barrel is comprised of a Cys-His-Asp catalytic triad and presumably faces the bacterial cell surface. A putative binding site for the sorting signal is located nearby.

  • Organizational Affiliation

    Structural Biology Center and Midwest Center for Structural Genomics, Argonne National Laboratory, 9700 South Cass Avenue, Building 202, Argonne, IL 60439 USA.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
sortase B
A, B
215Staphylococcus aureus subsp. aureus N315Mutation(s): 0 
Gene Names: SA0982
Find proteins for A0A0H3JPP1 (Staphylococcus aureus (strain N315))
Explore A0A0H3JPP1 
Go to UniProtKB:  A0A0H3JPP1
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupA0A0H3JPP1
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Resolution: 2.00 Å
  • R-Value Free: 0.248 
  • R-Value Work: 0.237 
  • R-Value Observed: 0.237 
  • Space Group: P 21 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 71.158α = 90
b = 104.383β = 90
c = 58.158γ = 90
Software Package:
Software NamePurpose
d*TREKdata reduction
HKL-2000data scaling

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2003-09-23
    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
  • Version 1.3: 2017-10-11
    Changes: Refinement description
  • Version 1.4: 2022-12-21
    Changes: Database references