4CIJ

Structure of Rolling Circle Replication Initiator Protein from Geobacillus stearothermophilus.


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.30 Å
  • R-Value Free: 0.235 
  • R-Value Work: 0.193 
  • R-Value Observed: 0.195 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Structures of Replication Initiation Proteins from Staphylococcal Antibiotic Resistance Plasmids Reveal Protein Asymmetry and Flexibility are Necessary for Replication.

Carr, S.B.Phillips, S.E.Thomas, C.D.

(2016) Nucleic Acids Res 44: 2417

  • DOI: https://doi.org/10.1093/nar/gkv1539
  • Primary Citation of Related Structures:  
    4CIJ, 4CWC, 4CWE

  • PubMed Abstract: 

    Antibiotic resistance in pathogenic bacteria is a continual threat to human health, often residing in extrachromosomal plasmid DNA. Plasmids of the pT181 family are widespread and confer various antibiotic resistances to Staphylococcus aureus. They replicate via a rolling circle mechanism that requires a multi-functional, plasmid-encoded replication protein to initiate replication, recruit a helicase to the site of initiation and terminate replication after DNA synthesis is complete. We present the first atomic resolution structures of three such replication proteins that reveal distinct, functionally relevant conformations. The proteins possess a unique active site and have been shown to contain a catalytically essential metal ion that is bound in a manner distinct from that of any other rolling circle replication proteins. These structures are the first examples of the Rep_trans Pfam family providing insights into the replication of numerous antibiotic resistance plasmids from Gram-positive bacteria, Gram-negative phage and the mobilisation of DNA by conjugative transposons.


  • Organizational Affiliation

    Research Complex at Harwell, Rutherford Appleton Laboratory, Harwell Oxford, Didcot, Oxfordshire OX11 0FA, UK Stephen.carr@rc-harwell.ac.uk.


Macromolecules
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Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
GST REP
A, B, C, D
271Geobacillus stearothermophilusMutation(s): 0 
EC: 5.99.1.2
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.30 Å
  • R-Value Free: 0.235 
  • R-Value Work: 0.193 
  • R-Value Observed: 0.195 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 66.111α = 90
b = 136.848β = 90
c = 149.157γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
XDSdata reduction
Aimlessdata scaling
SHARPphasing

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2014-12-24
    Type: Initial release
  • Version 1.1: 2016-02-03
    Changes: Database references
  • Version 1.2: 2016-03-30
    Changes: Database references