5N85

Structure of RPA70N in complex with PrimPol (fragment 514-525)


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2 Å
  • R-Value Free: 0.228 
  • R-Value Work: 0.187 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Molecular basis for PrimPol recruitment to replication forks by RPA.

Guilliam, T.A.Brissett, N.C.Ehlinger, A.Keen, B.A.Kolesar, P.Taylor, E.M.Bailey, L.J.Lindsay, H.D.Chazin, W.J.Doherty, A.J.

(2017) Nat Commun 8: 15222-15222

  • DOI: 10.1038/ncomms15222
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • DNA damage and secondary structures can stall the replication machinery. Cells possess numerous tolerance mechanisms to complete genome duplication in the presence of such impediments. In addition to translesion synthesis (TLS) polymerases, most euka ...

    DNA damage and secondary structures can stall the replication machinery. Cells possess numerous tolerance mechanisms to complete genome duplication in the presence of such impediments. In addition to translesion synthesis (TLS) polymerases, most eukaryotic cells contain a multifunctional replicative enzyme called primase-polymerase (PrimPol) that is capable of directly bypassing DNA damage by TLS, as well as repriming replication downstream of impediments. Here, we report that PrimPol is recruited to reprime through its interaction with RPA. Using biophysical and crystallographic approaches, we identify that PrimPol possesses two RPA-binding motifs and ascertained the key residues required for these interactions. We demonstrate that one of these motifs is critical for PrimPol's recruitment to stalled replication forks in vivo. In addition, biochemical analysis reveals that RPA serves to stimulate the primase activity of PrimPol. Together, these findings provide significant molecular insights into PrimPol's mode of recruitment to stalled forks to facilitate repriming and restart.


    Organizational Affiliation

    Genome Damage and Stability Centre, School of Life Sciences, University of Sussex, Brighton BN1 9RQ, UK.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Replication protein A 70 kDa DNA-binding subunit
A
123Homo sapiensMutation(s): 1 
Gene Names: RPA1 (REPA1, RPA70)
Find proteins for P27694 (Homo sapiens)
Go to Gene View: RPA1
Go to UniProtKB:  P27694
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
DNA-directed primase/polymerase protein
B
15Homo sapiensMutation(s): 0 
Gene Names: PRIMPOL (CCDC111)
EC: 2.7.7.-
Find proteins for Q96LW4 (Homo sapiens)
Go to Gene View: PRIMPOL
Go to UniProtKB:  Q96LW4
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2 Å
  • R-Value Free: 0.228 
  • R-Value Work: 0.187 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 37.860α = 90.00
b = 53.090β = 90.00
c = 54.630γ = 90.00
Software Package:
Software NamePurpose
Cootmodel building
CrystalCleardata collection
MOSFLMdata reduction
SCALAdata scaling
PHENIXrefinement
PHASERphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
Biotechnology and Biological Sciences Research CouncilUnited KingdomBB/H019723/1
Biotechnology and Biological Sciences Research CouncilUnited KingdomBB/M008800/1
Biotechnology and Biological Sciences Research CouncilUnited KingdomBB/M004236/1

Revision History 

  • Version 1.0: 2017-06-07
    Type: Initial release
  • Version 1.1: 2017-08-30
    Type: Author supporting evidence