2P5O

Crystal structure of RB69 GP43 in complex with DNA containing an abasic site analog


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.8 Å
  • R-Value Free: 0.290 
  • R-Value Work: 0.245 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

Crystallographic snapshots of a replicative DNA polymerase encountering an abasic site.

Hogg, M.Wallace, S.S.Doublie, S.

(2004) Embo J. 23: 1483-1493

  • DOI: 10.1038/sj.emboj.7600150
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Abasic sites are common DNA lesions, which are strong blocks to replicative polymerases and are potentially mutagenic when bypassed. We report here the 2.8 A structure of the bacteriophage RB69 replicative DNA polymerase attempting to process an abas ...

    Abasic sites are common DNA lesions, which are strong blocks to replicative polymerases and are potentially mutagenic when bypassed. We report here the 2.8 A structure of the bacteriophage RB69 replicative DNA polymerase attempting to process an abasic site analog. Four different complexes were captured in the crystal asymmetric unit: two have DNA in the polymerase active site whereas the other two molecules are in the exonuclease mode. When compared to complexes with undamaged DNA, the DNA surrounding the abasic site reveals distinct changes suggesting why the lesion is so poorly bypassed: the DNA in the polymerase active site has not translocated and is therefore stalled, precluding extension. All four molecules exhibit conformations that differ from the previously published structures. The polymerase incorporates dAMP across the lesion under crystallization conditions, indicating that the different conformations observed in the crystal may be part of the active site switching reaction pathway.


    Organizational Affiliation

    Department of Microbiology and Molecular Genetics, Markey Center for Molecular Genetics, University of Vermont, Burlington, VT, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure


Entity ID: 3
MoleculeChainsSequence LengthOrganismDetails
DNA polymerase
A, B, C, D
903Enterobacteria phage RB69Mutation(s): 2 
Gene Names: 43
EC: 2.7.7.7, 3.1.11.-
Find proteins for Q38087 (Enterobacteria phage RB69)
Go to UniProtKB:  Q38087
Entity ID: 1
MoleculeChainsLengthOrganism
Template DNAE,G,I,K18N/A
Entity ID: 2
MoleculeChainsLengthOrganism
Primer DNAF,H,J,L15N/A
Small Molecules
Modified Residues  2 Unique
IDChainsTypeFormula2D DiagramParent
3DR
Query on 3DR
E, G, I, K
DNA LINKINGC5 H11 O6 P

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MSE
Query on MSE
A, B, C, D
L-PEPTIDE LINKINGC5 H11 N O2 SeMET
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.8 Å
  • R-Value Free: 0.290 
  • R-Value Work: 0.245 
  • Space Group: P 1 21 1
Unit Cell:
Length (Å)Angle (°)
a = 133.018α = 90.00
b = 123.209β = 95.82
c = 165.616γ = 90.00
Software Package:
Software NamePurpose
SCALEPACKdata scaling
CNSphasing
CBASSdata collection
CNSrefinement
DENZOdata reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2007-04-03
    Type: Initial release
  • Version 1.1: 2008-05-01
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance
  • Version 1.3: 2014-09-10
    Type: Database references