1TH8

Crystal Structures of the ADP and ATP bound forms of the Bacillus Anti-sigma factor SpoIIAB in complex with the Anti-anti-sigma SpoIIAA: inhibitory complex with ADP, crystal form II


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.4 Å
  • R-Value Free: 0.253 
  • R-Value Work: 0.214 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Crystal Structures of the ADP and ATP Bound Forms of the Bacillus Anti-sigma Factor SpoIIAB in Complex with the Anti-anti-sigma SpoIIAA.

Masuda, S.Murakami, K.S.Wang, S.Olson, C.A.Donigian, J.Leon, F.Darst, S.A.Campbell, E.A.

(2004) J.Mol.Biol. 340: 941-956

  • DOI: 10.1016/j.jmb.2004.05.040
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Cell type-specific transcription during Bacillus sporulation is established by sigma(F), the activity of which is controlled by a regulatory circuit involving the anti-sigma factor and serine kinase SpoIIAB, and the anti-anti-sigma SpoIIAA. When ATP ...

    Cell type-specific transcription during Bacillus sporulation is established by sigma(F), the activity of which is controlled by a regulatory circuit involving the anti-sigma factor and serine kinase SpoIIAB, and the anti-anti-sigma SpoIIAA. When ATP is present in the nucleotide-binding site of SpoIIAB, SpoIIAA is phosphorylated, followed by dissociation. The nucleotide-binding site of SpoIIAB is left bound to ADP. SpoIIAB(ADP) can bind an unphosphorylated molecule of SpoIIAA as a stable binding partner. Thus, in this circuit, SpoIIAA plays a dual role as a substrate of the SpoIIAB kinase activity, as well as a tight binding inhibitor. Crystal structures of both the pre-phosphorylation complex and the inhibitory complex, SpoIIAB(ATP) and SpoIIAB(ADP) bound to SpoIIAA, respectively, have been determined. The structural differences between the two forms are subtle and confined to interactions with the phosphoryl groups of the nucleotides. The structures reveal details of the SpoIIAA:SpoIIAB interactions and how phosphorylated SpoIIAA dissociates from SpoIIAB(ADP). Finally, the results confirm and expand upon the docking model for SpoIIAA function as an anti-anti-sigma in releasing sigma(F) from SpoIIAB.


    Organizational Affiliation

    The Rockefeller University, 1230 York Avenue, New York, NY 10021, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Anti-sigma F factor
A
145Geobacillus stearothermophilusMutation(s): 0 
Gene Names: spoIIAB
EC: 2.7.11.1
Find proteins for O32727 (Geobacillus stearothermophilus)
Go to UniProtKB:  O32727
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Anti-sigma F factor antagonist
B
116Geobacillus stearothermophilusMutation(s): 0 
Gene Names: spoIIAA
Find proteins for O32726 (Geobacillus stearothermophilus)
Go to UniProtKB:  O32726
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ADP
Query on ADP

Download SDF File 
Download CCD File 
A
ADENOSINE-5'-DIPHOSPHATE
C10 H15 N5 O10 P2
XTWYTFMLZFPYCI-KQYNXXCUSA-N
 Ligand Interaction
MG
Query on MG

Download SDF File 
Download CCD File 
A
MAGNESIUM ION
Mg
JLVVSXFLKOJNIY-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.4 Å
  • R-Value Free: 0.253 
  • R-Value Work: 0.214 
  • Space Group: H 3 2
Unit Cell:
Length (Å)Angle (°)
a = 153.646α = 90.00
b = 153.646β = 90.00
c = 97.517γ = 120.00
Software Package:
Software NamePurpose
DENZOdata reduction
CNSphasing
SCALEPACKdata scaling
CNSrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2004-06-15
    Type: Initial release
  • Version 1.1: 2008-04-30
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance