2Z3X

Structure of a Protein-DNA Complex Essential for DNA Protection in Spore of Bacillus Species


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.10 Å
  • R-Value Free: 0.283 
  • R-Value Work: 0.257 
  • R-Value Observed: 0.257 

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This is version 1.3 of the entry. See complete history


Literature

Structure of a protein-DNA complex essential for DNA protection in spores of Bacillus species.

Lee, K.S.Bumbaca, D.Kosman, J.Setlow, P.Jedrzejas, M.J.

(2008) Proc Natl Acad Sci U S A 105: 2806-2811

  • DOI: 10.1073/pnas.0708244105
  • Primary Citation of Related Structures:  
    2Z3X

  • PubMed Abstract: 
  • The DNA-binding alpha/beta-type small acid-soluble proteins (SASPs) are a major factor in the resistance and long-term survival of spores of Bacillus species by protecting spore DNA against damage due to desiccation, heat, toxic chemicals, enzymes, and UV radiation ...

    The DNA-binding alpha/beta-type small acid-soluble proteins (SASPs) are a major factor in the resistance and long-term survival of spores of Bacillus species by protecting spore DNA against damage due to desiccation, heat, toxic chemicals, enzymes, and UV radiation. We now report the crystal structure at 2.1 A resolution of an alpha/beta-type SASP bound to a 10-bp DNA duplex. In the complex, the alpha/beta-type SASP adopt a helix-turn-helix motif, interact with DNA through minor groove contacts, bind to approximately 6 bp of DNA as a dimer, and the DNA is in an A-B type conformation. The structure of the complex provides important insights into the molecular details of both DNA and alpha/beta-type SASP protection in the complex and thus also in spores.


    Organizational Affiliation

    Children's Hospital Oakland Research Institute, Oakland, CA 94609, USA.



Macromolecules

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Entity ID: 3
MoleculeChainsSequence LengthOrganismDetailsImage
Small, acid-soluble spore protein CC [auth A],
D [auth B],
E [auth C]
63Bacillus subtilisMutation(s): 2 
Gene Names: sspC
UniProt
Find proteins for P02958 (Bacillus subtilis (strain 168))
Explore P02958 
Go to UniProtKB:  P02958
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP02958
Protein Feature View
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  • Reference Sequence

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Entity ID: 1
MoleculeChainsLengthOrganismImage
5'-D(*GP*GP*GP*GP*GP*GP*GP*GP*GP*GP*A)-3'A [auth D]11synthetic construct
Protein Feature View
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  • Reference Sequence

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Entity ID: 2
MoleculeChainsLengthOrganismImage
5'-D(*CP*CP*CP*CP*CP*CP*CP*CP*CP*CP*A)-3'B [auth E]11synthetic construct
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.10 Å
  • R-Value Free: 0.283 
  • R-Value Work: 0.257 
  • R-Value Observed: 0.257 
  • Space Group: P 61 2 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 86.962α = 90
b = 86.962β = 90
c = 144.669γ = 120
Software Package:
Software NamePurpose
CNSrefinement
HKL-2000data collection
HKL-2000data reduction
SCALEPACKdata scaling
SnBphasing

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2008-02-12
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Version format compliance
  • Version 1.2: 2018-10-24
    Changes: Data collection, Database references, Source and taxonomy
  • Version 1.3: 2021-11-10
    Changes: Database references