1RWZ

Crystal Structure of Proliferating Cell Nuclear Antigen (PCNA) from A. fulgidus


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.80 Å
  • R-Value Free: 0.238 
  • R-Value Work: 0.219 
  • R-Value Observed: 0.221 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Structural Basis for FEN-1 Substrate Specificity and PCNA-Mediated Activation in DNA Replication and Repair

Chapados, B.R.Hosfield, D.J.Han, S.Qiu, J.Yelent, B.Shen, B.Tainer, J.A.

(2004) Cell 116: 39-50

  • DOI: 10.1016/s0092-8674(03)01036-5
  • Primary Citation of Related Structures:  
    1RXM, 1RXV, 1RWZ, 1RXZ, 1RXW

  • PubMed Abstract: 
  • Flap EndoNuclease-1 (FEN-1) and the processivity factor proliferating cell nuclear antigen (PCNA) are central to DNA replication and repair. To clarify the molecular basis of FEN-1 specificity and PCNA activation, we report here structures of FEN-1:D ...

    Flap EndoNuclease-1 (FEN-1) and the processivity factor proliferating cell nuclear antigen (PCNA) are central to DNA replication and repair. To clarify the molecular basis of FEN-1 specificity and PCNA activation, we report here structures of FEN-1:DNA and PCNA:FEN-1-peptide complexes, along with fluorescence resonance energy transfer (FRET) and mutational results. FEN-1 binds the unpaired 3' DNA end (3' flap), opens and kinks the DNA, and promotes conformational closing of a flexible helical clamp to facilitate 5' cleavage specificity. Ordering of unstructured C-terminal regions in FEN-1 and PCNA creates an intermolecular beta sheet interface that directly links adjacent PCNA and DNA binding regions of FEN-1 and suggests how PCNA stimulates FEN-1 activity. The DNA and protein conformational changes, composite complex structures, FRET, and mutational results support enzyme-PCNA alignments and a kinked DNA pivot point that appear suitable to coordinate rotary handoffs of kinked DNA intermediates among enzymes localized by the three PCNA binding sites.


    Organizational Affiliation

    Department of Molecular Biology and Skaggs Institute for Chemical Biology, The Scripps Research Institute, La Jolla, CA 92122, USA.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
DNA polymerase sliding clampA245Archaeoglobus fulgidusMutation(s): 0 
Gene Names: pcnAF0335
Find proteins for O29912 (Archaeoglobus fulgidus (strain ATCC 49558 / VC-16 / DSM 4304 / JCM 9628 / NBRC 100126))
Explore O29912 
Go to UniProtKB:  O29912
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.80 Å
  • R-Value Free: 0.238 
  • R-Value Work: 0.219 
  • R-Value Observed: 0.221 
  • Space Group: F 41 3 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 244.355α = 90
b = 244.355β = 90
c = 244.355γ = 90
Software Package:
Software NamePurpose
DENZOdata reduction
SCALEPACKdata scaling
AMoREphasing
CNSrefinement

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2004-01-27
    Type: Initial release
  • Version 1.1: 2008-04-29
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Derived calculations, Version format compliance