1KO9

Native Structure of the Human 8-oxoguanine DNA Glycosylase hOGG1


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.15 Å
  • R-Value Free: 0.252 
  • R-Value Work: 0.206 
  • R-Value Observed: 0.210 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Reciprocal "flipping" underlies substrate recognition and catalytic activation by the human 8-oxo-guanine DNA glycosylase.

Bjoras, M.Seeberg, E.Luna, L.Pearl, L.H.Barrett, T.E.

(2002) J Mol Biol 317: 171-177

  • DOI: 10.1006/jmbi.2002.5400
  • Primary Citation of Related Structures:  
    1KO9

  • PubMed Abstract: 
  • Both 8oxo-guanine and formamidopyrimidines are major products of oxidative DNA damage that can result in the fixation of transversion mutations following replication if left unrepaired. These lesions are targeted by the N-DNA glycosylase hOgg1, which cat ...

    Both 8oxo-guanine and formamidopyrimidines are major products of oxidative DNA damage that can result in the fixation of transversion mutations following replication if left unrepaired. These lesions are targeted by the N-DNA glycosylase hOgg1, which catalyses excision of the aberrant base followed by cleavage of the phosphate backbone directly 5' to the resultant abasic site in a context, dependent manner. We present the crystal structure of native hOgg1 refined to 2.15 A resolution that reveals a number of highly significant conformational changes on association with DNA that are clearly required for substrate recognition and specificity. Changes of this magnitude appear to be unique to hOgg1 and have not been observed in any of the DNA-glycosylase structures analysed to date where both native and DNA-bound forms are available. It has been possible to identify a mechanism whereby the catalytic residue Lys 249 is "primed" for nucleophilic attack of the N-glycosidic bond.


    Organizational Affiliation

    Department of Molecular Biology, Institute of Medical Microbiology, University of Oslo, The National Hospital, Norway.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
8-oxoguanine DNA glycosylase A345Homo sapiensMutation(s): 0 
Gene Names: OGG1MMHMUTMOGH1
EC: 3.2.2 (PDB Primary Data), 4.2.99.18 (UniProt)
Find proteins for O15527 (Homo sapiens)
Explore O15527 
Go to UniProtKB:  O15527
NIH Common Fund Data Resources
PHAROS:  O15527
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
SO4
Query on SO4

Download Ideal Coordinates CCD File 
A
SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.15 Å
  • R-Value Free: 0.252 
  • R-Value Work: 0.206 
  • R-Value Observed: 0.210 
  • Space Group: P 65
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 105.513α = 90
b = 105.513β = 90
c = 47.597γ = 120
Software Package:
Software NamePurpose
AMoREphasing
CNSrefinement
DENZOdata reduction
SCALEPACKdata scaling

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2002-01-09
    Type: Initial release
  • Version 1.1: 2008-04-27
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance