2IZO

Structure of an Archaeal PCNA1-PCNA2-FEN1 Complex


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.9 Å
  • R-Value Free: 0.312 
  • R-Value Work: 0.250 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Structure of an Archaeal PCNA1-PCNA2-Fen1 Complex: Elucidating PCNA Subunit and Client Enzyme Specificity.

Dore, A.S.Kilkenny, M.L.Jones, S.A.Oliver, A.W.Roe, S.M.Bell, S.D.Pearl, L.H.

(2006) Nucleic Acids Res. 34: 4515

  • DOI: 10.1093/nar/gkl623

  • PubMed Abstract: 
  • The archaeal/eukaryotic proliferating cell nuclear antigen (PCNA) toroidal clamp interacts with a host of DNA modifying enzymes, providing a stable anchorage and enhancing their respective processivities. Given the broad range of enzymes with which P ...

    The archaeal/eukaryotic proliferating cell nuclear antigen (PCNA) toroidal clamp interacts with a host of DNA modifying enzymes, providing a stable anchorage and enhancing their respective processivities. Given the broad range of enzymes with which PCNA has been shown to interact, relatively little is known about the mode of assembly of functionally meaningful combinations of enzymes on the PCNA clamp. We have determined the X-ray crystal structure of the Sulfolobus solfataricus PCNA1-PCNA2 heterodimer, bound to a single copy of the flap endonuclease FEN1 at 2.9 A resolution. We demonstrate the specificity of interaction of the PCNA subunits to form the PCNA1-PCNA2-PCNA3 heterotrimer, as well as providing a rationale for the specific interaction of the C-terminal PIP-box motif of FEN1 for the PCNA1 subunit. The structure explains the specificity of the individual archaeal PCNA subunits for selected repair enzyme 'clients', and provides insights into the co-ordinated assembly of sequential enzymatic steps in PCNA-scaffolded DNA repair cascades.


    Organizational Affiliation

    CR-UK DNA Repair Enzymes Group, Section of Structural Biology, The Institute of Cancer Research, 237 Fulham Road, Chelsea, London, SW3 6JB, UK. Andrew.Dore@icr.ac.uk




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
FLAP STRUCTURE-SPECIFIC ENDONUCLEASE
A
346Sulfolobus solfataricus (strain ATCC 35092 / DSM 1617 / JCM 11322 / P2)Gene Names: fen
EC: 3.1.-.-
Find proteins for Q980U8 (Sulfolobus solfataricus (strain ATCC 35092 / DSM 1617 / JCM 11322 / P2))
Go to UniProtKB:  Q980U8
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
DNA POLYMERASE SLIDING CLAMP C
B
246Sulfolobus solfataricus (strain ATCC 35092 / DSM 1617 / JCM 11322 / P2)Gene Names: pcn2 (pcnA-2)
Find proteins for Q97Z84 (Sulfolobus solfataricus (strain ATCC 35092 / DSM 1617 / JCM 11322 / P2))
Go to UniProtKB:  Q97Z84
Entity ID: 3
MoleculeChainsSequence LengthOrganismDetails
DNA POLYMERASE SLIDING CLAMP B
C
249Sulfolobus solfataricus (strain ATCC 35092 / DSM 1617 / JCM 11322 / P2)Gene Names: pcn1 (pcnA-like)
Find proteins for P57766 (Sulfolobus solfataricus (strain ATCC 35092 / DSM 1617 / JCM 11322 / P2))
Go to UniProtKB:  P57766
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ZN
Query on ZN

Download SDF File 
Download CCD File 
A, B, C
ZINC ION
Zn
PTFCDOFLOPIGGS-UHFFFAOYSA-N
 Ligand Interaction
MG
Query on MG

Download SDF File 
Download CCD File 
A, B, C
MAGNESIUM ION
Mg
JLVVSXFLKOJNIY-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.9 Å
  • R-Value Free: 0.312 
  • R-Value Work: 0.250 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 93.986α = 90.00
b = 99.774β = 90.00
c = 99.958γ = 90.00
Software Package:
Software NamePurpose
SCALAdata scaling
MOSFLMdata reduction
REFMACrefinement
PHASERphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2006-09-06
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Advisory, Version format compliance