3BZJ

UVDE K229L


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.30 Å
  • R-Value Free: 0.244 
  • R-Value Work: 0.188 
  • R-Value Observed: 0.190 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

Involvement of a carboxylated lysine in UV damage endonuclease

Meulenbroek, E.M.Paspaleva, K.Thomassen, E.A.Abrahams, J.P.Goosen, N.Pannu, N.S.

(2009) Protein Sci 18: 549-558

  • DOI: 10.1002/pro.54
  • Structures With Same Primary Citation

  • PubMed Abstract: 
  • UV damage endonuclease is a DNA repair enzyme that can both recognize damage such as UV lesions and introduce a nick directly 5' to them. Recently, the crystal structure of the enzyme from Thermus thermophilus was solved. In the electron density map ...

    UV damage endonuclease is a DNA repair enzyme that can both recognize damage such as UV lesions and introduce a nick directly 5' to them. Recently, the crystal structure of the enzyme from Thermus thermophilus was solved. In the electron density map of this structure, unexplained density near the active site was observed at the tip of Lys229. Based on this finding, it was proposed that Lys229 is post-translationally modified. In this article, we give evidence that this modification is a carboxyl group. By combining activity assays and X-ray crystallography on several point mutants, we show that the carboxyl group assists in metal binding required for catalysis by donating negative charge to the metal-coordinating residue His231. Moreover, functional and structural analysis of the K229R mutant reveals that if His231 shifts away, an increased activity results on both damaged and undamaged DNA. Taken together, the results show that T. thermophilus ultraviolet damage endonuclease is carboxylated and the modified lysine is required for proper catalysis and preventing increased incision of undamaged DNA.


    Organizational Affiliation

    Biophysical Structural Chemistry, Leiden Institute of Chemistry, RA Leiden, The Netherlands.



Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
UV endonucleaseA301Thermus thermophilusMutation(s): 1 
Find proteins for Q746K1 (Thermus thermophilus (strain HB27 / ATCC BAA-163 / DSM 7039))
Explore Q746K1 
Go to UniProtKB:  Q746K1
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
SO4
Query on SO4

Download CCD File 
A
SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
 Ligand Interaction
MN
Query on MN

Download CCD File 
A
MANGANESE (II) ION
Mn
WAEMQWOKJMHJLA-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.30 Å
  • R-Value Free: 0.244 
  • R-Value Work: 0.188 
  • R-Value Observed: 0.190 
  • Space Group: P 61 2 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 113.39α = 90
b = 113.39β = 90
c = 89.39γ = 120
Software Package:
Software NamePurpose
REFMACrefinement
BESTdata collection
iMOSFLMdata reduction
SCALAdata scaling
MOLREPphasing

Structure Validation

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Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2008-12-09
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Version format compliance