BofC from Bacillus subtilis

Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 100 
  • Conformers Submitted: 25 
  • Selection Criteria: ENERGY 

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The structure of bypass of forespore C, an intercompartmental signaling factor during sporulation in Bacillus.

Patterson, H.M.Brannigan, J.A.Cutting, S.M.Wilson, K.S.Wilkinson, A.J.Ab, E.Diercks, T.de Jong, R.N.Truffault, V.Folkers, G.E.Kaptein, R.

(2005) J Biol Chem 280: 36214-36220

  • DOI: https://doi.org/10.1074/jbc.M506910200
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 

    Sporulation in Bacillus subtilis begins with an asymmetric cell division giving rise to smaller forespore and larger mother cell compartments. Different programs of gene expression are subsequently directed by compartment-specific RNA polymerase sigma-factors. In the final stages, spore coat proteins are synthesized in the mother cell under the control of RNA polymerase containing sigma(K), (Esigma(K)). sigma(K) is synthesized as an inactive zymogen, pro-sigma(K), which is activated by proteolytic cleavage. Processing of pro-sigma(K) is performed by SpoIVFB, a metalloprotease that resides in a complex with SpoIVFA and bypass of forespore (Bof)A in the outer forespore membrane. Ensuring coordination of events taking place in the two compartments, pro-sigma(K) processing in the mother cell is delayed until appropriate signals are received from the forespore. Cell-cell signaling is mediated by SpoIVB and BofC, which are expressed in the forespore and secreted to the intercompartmental space where they regulate pro-sigma(K) processing by mechanisms that are not yet fully understood. Here we present the three-dimensional structure of BofC determined by solution state NMR. BofC is a monomer made up of two domains. The N-terminal domain, containing a four-stranded beta-sheet onto one face of which an alpha-helix is packed, closely resembles the third immunoglobulin-binding domain of protein G from Streptococcus. The C-terminal domain contains a three-stranded beta-sheet and three alpha-helices in a novel domain topology. The sequence connecting the domains contains a conserved DISP motif to which mutations that affect BofC activity map. Possible roles for BofC in the sigma(K) checkpoint are discussed in the light of sequence and structure comparisons.

  • Organizational Affiliation

    Structural Biology Laboratory, Department of Chemistry, University of York, York YO10 5YW, United Kingdom.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
BYPASS OF FORESPORE C140Bacillus subtilisMutation(s): 0 
Find proteins for O05391 (Bacillus subtilis (strain 168))
Explore O05391 
Go to UniProtKB:  O05391
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Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupO05391
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 100 
  • Conformers Submitted: 25 
  • Selection Criteria: ENERGY 

Structure Validation

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Entry History 

Revision History  (Full details and data files)

  • Version 1.0: 2005-09-15
    Type: Initial release
  • Version 1.1: 2011-05-08
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2018-05-09
    Changes: Data collection, Database references
  • Version 1.4: 2024-05-15
    Changes: Data collection, Database references, Other