1PV0

Structure of the Sda antikinase


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 50 
  • Conformers Submitted: 25 
  • Selection Criteria: Structures with lowest energy and least restraint violations 

wwPDB Validation   3D Report Full Report


This is version 1.3 of the entry. See complete history


Literature

Structure and mechanism of Sda: an inhibitor of the histidine kinases that regulate initiation of sporulation in Bacillus subtilis

Rowland, S.L.Burkholder, W.F.Cunningham, K.A.Maciejewski, M.W.Grossman, A.D.King, G.F.

(2004) Mol Cell 13: 689-701

  • DOI: 10.1016/s1097-2765(04)00084-x
  • Primary Citation of Related Structures:  
    1PV0

  • PubMed Abstract: 
  • Histidine kinases are used extensively in prokaryotes to monitor and respond to changes in cellular and environmental conditions. In Bacillus subtilis, sporulation-specific gene expression is controlled by a histidine kinase phosphorelay that culminates in phosphorylation of the Spo0A transcription factor ...

    Histidine kinases are used extensively in prokaryotes to monitor and respond to changes in cellular and environmental conditions. In Bacillus subtilis, sporulation-specific gene expression is controlled by a histidine kinase phosphorelay that culminates in phosphorylation of the Spo0A transcription factor. Sda provides a developmental checkpoint by inhibiting this phosphorelay in response to DNA damage and replication defects. We show that Sda acts at the first step in the relay by inhibiting autophosphorylation of the histidine kinase KinA. The structure of Sda, which we determined using NMR, comprises a helical hairpin. A cluster of conserved residues on one face of the hairpin mediates an interaction between Sda and the KinA dimerization/phosphotransfer domain. This interaction stabilizes the KinA dimer, and the two proteins form a stable heterotetramer. The data indicate that Sda forms a molecular barricade that inhibits productive interaction between the catalytic and phosphotransfer domains of KinA.


    Related Citations: 
    • Replication initiation proteins regulate a developmental checkpoint in Bacillus subtilis
      Burkholder, W.F., Kurster, I., Grossman, A.D.
      (2001) Cell 104: 269

    Organizational Affiliation

    Department of Molecular, Microbial and Structural Biology, University of Connecticut Health Center, 263 Farmington Avenue, Farmington, CT 06030 USA.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
SdaA46Bacillus subtilisMutation(s): 0 
Gene Names: sda
UniProt
Find proteins for Q7WY62 (Bacillus subtilis (strain 168))
Explore Q7WY62 
Go to UniProtKB:  Q7WY62
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ7WY62
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 50 
  • Conformers Submitted: 25 
  • Selection Criteria: Structures with lowest energy and least restraint violations 
  • OLDERADO: 1PV0 Olderado

Structure Validation

View Full Validation Report




Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2004-04-13
    Type: Initial release
  • Version 1.1: 2008-04-29
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2022-03-02
    Changes: Database references, Derived calculations