2MNA

The structural basis of DNA binding by the single-stranded DNA-binding protein from Sulfolobus solfataricus


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 10000 
  • Conformers Submitted: 10 
  • Selection Criteria: structures with the lowest energy 

wwPDB Validation 3D Report Full Report


This is version 1.0 of the entry. See complete history

Literature

The structural basis of DNA binding by the single-stranded DNA-binding protein from Sulfolobus solfataricus

Gamsjaeger, R.Kariawasam, R.Gimenez, A.X.Touma, C.McIlwain, E.Bernardo, R.E.Shepherd, N.E.Ataide, S.F.Dong, Q.Richard, D.J.White, M.F.Cubeddu, L.

(2015) Biochem.J. 465: 337-346

  • DOI: 10.1042/BJ20141140

  • PubMed Abstract: 
  • Canonical single-stranded DNA-binding proteins (SSBs) from the oligosaccharide/oligonucleotide-binding (OB) domain family are present in all known organisms and are critical for DNA replication, recombination and repair. The SSB from the hyperthermop ...

    Canonical single-stranded DNA-binding proteins (SSBs) from the oligosaccharide/oligonucleotide-binding (OB) domain family are present in all known organisms and are critical for DNA replication, recombination and repair. The SSB from the hyperthermophilic crenarchaeote Sulfolobus solfataricus (SsoSSB) has a 'simple' domain organization consisting of a single DNA-binding OB fold coupled to a flexible C-terminal tail, in contrast with other SSBs in this family that incorporate up to four OB domains. Despite the large differences in the domain organization within the SSB family, the structure of the OB domain is remarkably similar all cellular life forms. However, there are significant differences in the molecular mechanism of ssDNA binding. We have determined the structure of the SsoSSB OB domain bound to ssDNA by NMR spectroscopy. We reveal that ssDNA recognition is modulated by base-stacking of three key aromatic residues, in contrast with the OB domains of human RPA and the recently discovered human homologue of SsoSSB, hSSB1. We also demonstrate that SsoSSB binds ssDNA with a footprint of five bases and with a defined binding polarity. These data elucidate the structural basis of DNA binding and shed light on the molecular mechanism by which these 'simple' SSBs interact with ssDNA.


    Organizational Affiliation

    *School of Science and Health, University of Western Sydney, Penrith, NSW 2751, Australia.,§Institute of Health and Biomedical Innovation, Translational Research Institute, Queensland University of Technology, Woolloongabba 4102, Australia.,║Biomolecular Sciences Research Complex, University of St Andrews, St Andrews, KY16 9ST, U.K.,†School of Molecular Bioscience, University of Sydney, Sydney, NSW 2006, Australia.




Macromolecules

Find similar proteins by: Sequence  |  Structure


Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Single-stranded DNA binding protein (SSB)
A
117Saccharolobus solfataricus (strain ATCC 35092 / DSM 1617 / JCM 11322 / P2)Mutation(s): 0 
Gene Names: ssb
Find proteins for Q97W73 (Saccharolobus solfataricus (strain ATCC 35092 / DSM 1617 / JCM 11322 / P2))
Go to UniProtKB:  Q97W73
Entity ID: 1
MoleculeChainsLengthOrganism
ssDNAB6N/A
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 10000 
  • Conformers Submitted: 10 
  • Selection Criteria: structures with the lowest energy 

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2014-12-17
    Type: Initial release