1JMC

SINGLE STRANDED DNA-BINDING DOMAIN OF HUMAN REPLICATION PROTEIN A BOUND TO SINGLE STRANDED DNA, RPA70 SUBUNIT, RESIDUES 183-420

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.40 Å
  • R-Value Free: 0.330 
  • R-Value Work: 0.100 
  • R-Value Observed: 0.212 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history. 


Literature

Structure of the single-stranded-DNA-binding domain of replication protein A bound to DNA.

Bochkarev, A., Pfuetzner, R.A., Edwards, A.M., Frappier, L.

(1997) Nature 385: 176-181

  • DOI: https://doi.org/10.1038/385176a0
  • Primary Citation of Related Structures:  
    1JMC

  • PubMed Abstract: 

    The single-stranded-DNA-binding proteins (SSBs) are essential for DNA function in prokaryotic and eukaryotic cells, mitochondria, phages and viruses. The structures of four SSBs have been solved, but the molecular details of the interaction of SSBs with DNA remain speculative. We report here the crystal structure at 2.4 A resolution of the single-stranded-DNA-binding domain of human replication protein A (RPA) bound to DNA. Replication protein A is a heterotrimeric SSB that is highly conserved in eukaryotes. The largest subunit, RPA70, binds to single-stranded (ss)DNA and mediates interactions with many cellular and viral proteins. The DNA-binding domain, which lies in the middle of RPA70, comprises two structurally homologous subdomains oriented in tandem. The ssDNA lies in a channel that extends from one subdomain to the other. The structure of each RPA70 subdomain is similar to those of the bacteriophage SSBs, indicating that the mechanism of ssDNA-binding is conserved.

    • Organizational Affiliation: 

    Institute for Molecular Biology and Biotechnology, Cancer Research Group, McMaster University, Hamilton, Ontario, Canada.


Macromolecules

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Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
PROTEIN (REPLICATION PROTEIN A (RPA))B [auth A]246Homo sapiensMutation(s): 0 
UniProt & NIH Common Fund Data Resources
Find proteins for P27694 (Homo sapiens)
Explore P27694 
Go to UniProtKB:  P27694
PHAROS:  P27694
GTEx:  ENSG00000132383 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP27694
Sequence Annotations
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  • Reference Sequence

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Entity ID: 1
MoleculeChains LengthOrganismImage
DNA (5'-D(*CP*CP*CP*CP*CP*CP*CP*C)-3')A [auth B]8N/A
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.40 Å
  • R-Value Free: 0.330 
  • R-Value Work: 0.100 
  • R-Value Observed: 0.212 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 34.25α = 90
b = 77.99β = 90
c = 95.36γ = 90
Software Package:
Software NamePurpose
DENZOdata reduction
SCALEPACKdata scaling
PHASESphasing
X-PLORrefinement

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 1997-10-16
    Type: Initial release
  • Version 1.1: 2008-05-22
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance