Intracellular subtilisin precursor from B. clausii

Experimental Data Snapshot

  • Resolution: 2.45 Å
  • R-Value Free: 0.274 
  • R-Value Work: 0.197 
  • R-Value Observed: 0.202 

Starting Model: experimental
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This is version 1.2 of the entry. See complete history


Crystal Structure of an Intracellular Subtilisin Reveals Novel Structural Features Unique to This Subtilisin Family.

Vevodova, J.Gamble, M.Kunze, G.Ariza, A.Dodson, E.Jones, D.D.Wilson, K.S.

(2010) Structure 18: 744

  • DOI: https://doi.org/10.1016/j.str.2010.03.008
  • Primary Citation of Related Structures:  
    2WV7, 2WWT, 2X8J

  • PubMed Abstract: 

    The intracellular subtilisin proteases (ISPs) are the only known members of the important and ubiquitous subtilisin family that function exclusively within the cell, constituting a major component of the degradome in many Gram-positive bacteria. The first ISP structure reported herein at a spacing of 1.56 A reveals features unique among subtilisins that has enabled potential functional and physiological roles to be assigned to sequence elements exclusive to the ISPs. Unlike all other subtilisins, ISP from B. clausii is dimeric, with residues from the C terminus making a major contribution to the dimer interface by crossing over to contact the partner subunit. A short N-terminal extension binds back across the active site to provide a potential novel regulatory mechanism of intrinsic proteolytic activity: a proline residue conserved throughout the ISPs introduces a kink in the polypeptide backbone that lifts the target peptide bond out of reach of the catalytic residues.

  • Organizational Affiliation

    Structural Biology Laboratory, Department of Chemistry, University of York, Heslington, York YO10 5YW, UK.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
A, B, C, D, E
A, B, C, D, E, F
329Shouchella clausiiMutation(s): 0 
Find proteins for D0AB41 (Shouchella clausii)
Explore D0AB41 
Go to UniProtKB:  D0AB41
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupD0AB41
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Resolution: 2.45 Å
  • R-Value Free: 0.274 
  • R-Value Work: 0.197 
  • R-Value Observed: 0.202 
  • Space Group: P 31
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 119.829α = 90
b = 119.829β = 90
c = 106.2γ = 120
Software Package:
Software NamePurpose
MOSFLMdata reduction
SCALAdata scaling

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2010-09-08
    Type: Initial release
  • Version 1.1: 2013-11-27
    Changes: Refinement description, Source and taxonomy, Version format compliance
  • Version 1.2: 2023-12-20
    Changes: Data collection, Database references, Derived calculations, Other, Refinement description