4RU9

Crystal structure of human DNA polymerase eta inserting dCMPNPP opposite a MeFapy-dG adducted DNA template


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.65 Å
  • R-Value Free: 0.229 
  • R-Value Work: 0.159 

wwPDB Validation 3D Report Full Report


This is version 1.0 of the entry. See complete history

Literature

Structural Basis for Error-Free Bypass of the 5-N-Methylformamidopyrimidine-dG Lesion by Human DNA Polymerase eta and Sulfolobus solfataricus P2 Polymerase IV.

Patra, A.Banerjee, S.Johnson Salyard, T.L.Malik, C.K.Christov, P.P.Rizzo, C.J.Stone, M.P.Egli, M.

(2015) J.Am.Chem.Soc. 137: 7011-7014

  • DOI: 10.1021/jacs.5b02701
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • N(6)-(2-Deoxy-D-erythro-pentofuranosyl)-2,6-diamino-3,4-dihydro-4-oxo-5-N-methylformamidopyrimidine (MeFapy-dG) arises from N7-methylation of deoxyguanosine followed by imidazole ring opening. The lesion has been reported to persist in animal tissues ...

    N(6)-(2-Deoxy-D-erythro-pentofuranosyl)-2,6-diamino-3,4-dihydro-4-oxo-5-N-methylformamidopyrimidine (MeFapy-dG) arises from N7-methylation of deoxyguanosine followed by imidazole ring opening. The lesion has been reported to persist in animal tissues. Previous in vitro replication bypass investigations of the MeFapy-dG adduct revealed predominant insertion of C opposite the lesion, dependent on the identity of the DNA polymerase (Pol) and the local sequence context. Here we report crystal structures of ternary Pol·DNA·dNTP complexes between MeFapy-dG-adducted DNA template:primer duplexes and the Y-family polymerases human Pol η and P2 Pol IV (Dpo4) from Sulfolobus solfataricus. The structures of the hPol η and Dpo4 complexes at the insertion and extension stages, respectively, are representative of error-free replication, with MeFapy-dG in the anti conformation and forming Watson-Crick pairs with dCTP or dC.


    Organizational Affiliation

    †Department of Biochemistry, Center in Molecular Toxicology, Vanderbilt-Ingram Cancer Center, Vanderbilt Institute of Chemical Biology, Center for Structural Biology, Vanderbilt University School of Medicine, Nashville, Tennessee 37232, United States.




Macromolecules

Find similar proteins by: Sequence  |  Structure


Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
DNA polymerase eta
A
432Homo sapiensMutation(s): 0 
Gene Names: POLH (RAD30, RAD30A, XPV)
EC: 2.7.7.7
Find proteins for Q9Y253 (Homo sapiens)
Go to Gene View: POLH
Go to UniProtKB:  Q9Y253
Entity ID: 2
MoleculeChainsLengthOrganism
Nucleic acids Template: CAT(MF7)ATGACGCTT12synthetic construct
Entity ID: 3
MoleculeChainsLengthOrganism
Nucleic acids Primar: AGCGTCATP8synthetic construct
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
0KX
Query on 0KX

Download SDF File 
Download CCD File 
A
2'-deoxy-5'-O-[(R)-hydroxy{[(R)-hydroxy(phosphonooxy)phosphoryl]amino}phosphoryl]cytidine
C9 H17 N4 O12 P3
STYMTWKSQLVXJN-SHYZEUOFSA-N
 Ligand Interaction
MG
Query on MG

Download SDF File 
Download CCD File 
A
MAGNESIUM ION
Mg
JLVVSXFLKOJNIY-UHFFFAOYSA-N
 Ligand Interaction
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
MF7
Query on MF7
T
DNA LINKINGC11 H18 N5 O8 P

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Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.65 Å
  • R-Value Free: 0.229 
  • R-Value Work: 0.159 
  • Space Group: P 61
Unit Cell:
Length (Å)Angle (°)
a = 98.971α = 90.00
b = 98.971β = 90.00
c = 81.624γ = 120.00
Software Package:
Software NamePurpose
HKL-2000data scaling
REFMACrefinement
HKL-2000data reduction
PHASERphasing
MD2data collection

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

  • Deposited Date: 2014-11-18 
  • Released Date: 2015-08-05 
  • Deposition Author(s): Patra, A., Egli, M.

Revision History 

  • Version 1.0: 2015-08-05
    Type: Initial release