3MR5

Human DNA polymerase eta - DNA ternary complex with a CPD 1bp upstream of the active site (TT3)


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.8 Å
  • R-Value Free: 0.207 
  • R-Value Work: 0.191 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Structure and mechanism of human DNA polymerase eta.

Biertumpfel, C.Zhao, Y.Kondo, Y.Ramon-Maiques, S.Gregory, M.Lee, J.Y.Masutani, C.Lehmann, A.R.Hanaoka, F.Yang, W.

(2010) Nature 465: 1044-1048

  • DOI: 10.1038/nature09196
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • The variant form of the human syndrome xeroderma pigmentosum (XPV) is caused by a deficiency in DNA polymerase eta (Poleta), a DNA polymerase that enables replication through ultraviolet-induced pyrimidine dimers. Here we report high-resolution cryst ...

    The variant form of the human syndrome xeroderma pigmentosum (XPV) is caused by a deficiency in DNA polymerase eta (Poleta), a DNA polymerase that enables replication through ultraviolet-induced pyrimidine dimers. Here we report high-resolution crystal structures of human Poleta at four consecutive steps during DNA synthesis through cis-syn cyclobutane thymine dimers. Poleta acts like a 'molecular splint' to stabilize damaged DNA in a normal B-form conformation. An enlarged active site accommodates the thymine dimer with excellent stereochemistry for two-metal ion catalysis. Two residues conserved among Poleta orthologues form specific hydrogen bonds with the lesion and the incoming nucleotide to assist translesion synthesis. On the basis of the structures, eight Poleta missense mutations causing XPV can be rationalized as undermining the molecular splint or perturbing the active-site alignment. The structures also provide an insight into the role of Poleta in replicating through D loop and DNA fragile sites.


    Organizational Affiliation

    Laboratory of Molecular Biology, NIDDK, NIH, 9000 Rockville Pike, Building 5, Room B103, Bethesda, Maryland 20892, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure


Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
DNA polymerase eta
A
435Homo 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
DNA (5'-D(*TP*AP*AP*CP*(TTD)P*AP*TP*GP*AP*CP*GP*A)-3')T12N/A
Entity ID: 3
MoleculeChainsLengthOrganism
DNA (5'-D(*AP*CP*GP*TP*CP*AP*TP*AP*A)-3')P9N/A
Small Molecules
Ligands 3 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
GOL
Query on GOL

Download SDF File 
Download CCD File 
A, T
GLYCEROL
GLYCERIN; PROPANE-1,2,3-TRIOL
C3 H8 O3
PEDCQBHIVMGVHV-UHFFFAOYSA-N
 Ligand Interaction
XG4
Query on XG4

Download SDF File 
Download CCD File 
A
2'-deoxy-5'-O-[(R)-hydroxy{[(R)-hydroxy(phosphonooxy)phosphoryl]amino}phosphoryl]guanosine
C10 H17 N6 O12 P3
DWGAAFQEGIMTIA-KVQBGUIXSA-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
TTD
Query on TTD
T
DNA LINKINGC20 H28 N4 O15 P2DT
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.8 Å
  • R-Value Free: 0.207 
  • R-Value Work: 0.191 
  • Space Group: P 61
Unit Cell:
Length (Å)Angle (°)
a = 99.125α = 90.00
b = 99.125β = 90.00
c = 81.703γ = 120.00
Software Package:
Software NamePurpose
CNSrefinement
XDSdata reduction
SERGUIdata collection
XSCALEdata scaling
PHASERphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2010-06-30
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Version format compliance
  • Version 1.2: 2012-03-21
    Type: Database references