2R8K

Structure of the Eukaryotic DNA Polymerase eta in complex with 1,2-d(GpG)-cisplatin containing DNA


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.3 Å
  • R-Value Free: 0.267 
  • R-Value Work: 0.230 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Bypass of DNA lesions generated during anticancer treatment with cisplatin by DNA polymerase eta

Alt, A.Lammens, K.Chiocchini, C.Lammens, A.Pieck, J.C.Kuch, D.Hopfner, K.P.Carell, T.

(2007) Science 318: 967-970

  • DOI: 10.1126/science.1148242
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • DNA polymerase eta (Pol eta) is a eukaryotic lesion bypass polymerase that helps organisms to survive exposure to ultraviolet (UV) radiation, and tumor cells to gain resistance against cisplatin-based chemotherapy. It allows cells to replicate across ...

    DNA polymerase eta (Pol eta) is a eukaryotic lesion bypass polymerase that helps organisms to survive exposure to ultraviolet (UV) radiation, and tumor cells to gain resistance against cisplatin-based chemotherapy. It allows cells to replicate across cross-link lesions such as 1,2-d(GpG) cisplatin adducts (Pt-GG) and UV-induced cis-syn thymine dimers. We present structural and biochemical analysis of how Pol eta copies Pt-GG-containing DNA. The damaged DNA is bound in an open DNA binding rim. Nucleotidyl transfer requires the DNA to rotate into an active conformation, driven by hydrogen bonding of the templating base to the dNTP. For the 3'dG of the Pt-GG, this step is accomplished by a Watson-Crick base pair to dCTP and is biochemically efficient and accurate. In contrast, bypass of the 5'dG of the Pt-GG is less efficient and promiscuous for dCTP and dATP as a result of the presence of the rigid Pt cross-link. Our analysis reveals the set of structural features that enable Pol eta to replicate across strongly distorting DNA lesions.


    Organizational Affiliation

    Munich Center for Integrated Protein Science (CiPS), Ludwig Maximilians University, D-81377 Munich, Germany.




Macromolecules

Find similar proteins by: Sequence  |  Structure


Entity ID: 3
MoleculeChainsSequence LengthOrganismDetails
DNA polymerase eta
A, B
554Saccharomyces cerevisiae (strain ATCC 204508 / S288c)Mutation(s): 0 
Gene Names: RAD30 (DBH1)
EC: 2.7.7.7
Find proteins for Q04049 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Go to UniProtKB:  Q04049
Entity ID: 1
MoleculeChainsLengthOrganism
5'-D(*DGP*DTP*DGP*DGP*DTP*DGP*DAP*DGP*DC)-3'Q,P9N/A
Entity ID: 2
MoleculeChainsLengthOrganism
5'-D(P*DGP*DGP*DCP*DTP*DCP*DAP*DCP*DCP*DAP*DC)-3'U,T10N/A
Small Molecules
Ligands 3 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
CPT
Query on CPT

Download SDF File 
Download CCD File 
T, U
Cisplatin
diammine(dichloro)platinum
Cl2 H6 N2 Pt
LXZZYRPGZAFOLE-UHFFFAOYSA-L
 Ligand Interaction
DTP
Query on DTP

Download SDF File 
Download CCD File 
A, B
2'-DEOXYADENOSINE 5'-TRIPHOSPHATE
C10 H16 N5 O12 P3
SUYVUBYJARFZHO-RRKCRQDMSA-N
 Ligand Interaction
CA
Query on CA

Download SDF File 
Download CCD File 
A, B
CALCIUM ION
Ca
BHPQYMZQTOCNFJ-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.3 Å
  • R-Value Free: 0.267 
  • R-Value Work: 0.230 
  • Space Group: P 41 21 2
Unit Cell:
Length (Å)Angle (°)
a = 103.740α = 90.00
b = 103.740β = 90.00
c = 292.810γ = 90.00
Software Package:
Software NamePurpose
PHASERphasing
XDSdata scaling
CNSrefinement
XDSdata reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2007-12-11
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Non-polymer description, Version format compliance