5ZB8

Crystal structure of the novel lesion-specific endonuclease PfuEndoQ from Pyrococcus furiosus

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.50 Å
  • R-Value Free: 0.209 
  • R-Value Work: 0.176 
  • R-Value Observed: 0.178 

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This is version 1.2 of the entry. See complete history. 


Literature

Crystal structure of the novel lesion-specific endonuclease PfuEndoQ from Pyrococcus furiosus.

Miyazono, K.I., Ishino, S., Makita, N., Ito, T., Ishino, Y., Tanokura, M.

(2018) Nucleic Acids Res 46: 4807-4818

  • DOI: 10.1093/nar/gky261
  • Primary Citation of Related Structures:  
    5ZB8

  • PubMed Abstract: 

    • Because base deaminations, which are promoted by high temperature, ionizing radiation, aerobic respiration and nitrosative stress, produce mutations during replication, deaminated bases must be repaired quickly to maintain genome integrity. Recently, we identified a novel lesion-specific endonuclease, PfuEndoQ, from Pyrococcus furiosus, and PfuEndoQ may be involved in the DNA repair pathway in Thermococcales of Archaea ...

    Because base deaminations, which are promoted by high temperature, ionizing radiation, aerobic respiration and nitrosative stress, produce mutations during replication, deaminated bases must be repaired quickly to maintain genome integrity. Recently, we identified a novel lesion-specific endonuclease, PfuEndoQ, from Pyrococcus furiosus, and PfuEndoQ may be involved in the DNA repair pathway in Thermococcales of Archaea. PfuEndoQ recognizes a deaminated base and cleaves the phosphodiester bond 5' of the lesion site. To elucidate the structural basis of the substrate recognition and DNA cleavage mechanisms of PfuEndoQ, we determined the structure of PfuEndoQ using X-ray crystallography. The PfuEndoQ structure and the accompanying biochemical data suggest that PfuEndoQ recognizes a deaminated base using a highly conserved pocket adjacent to a Zn2+-binding site and hydrolyses a phosphodiester bond using two Zn2+ ions. The PfuEndoQ-DNA complex is stabilized by a Zn-binding domain and a C-terminal helical domain, and the complex may recruit downstream proteins in the DNA repair pathway.

    Organizational Affiliation: 

    Laboratory of Basic Science on Healthy Longevity, Department of Applied Biological Chemistry, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo 113-8657, Japan.



Macromolecules
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(by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
PfuEndoQA, B, C, D, E400Pyrococcus furiosusMutation(s): 0 
UniProt
Find proteins for Q8U0N5 (Pyrococcus furiosus (strain ATCC 43587 / DSM 3638 / JCM 8422 / Vc1))
Explore Q8U0N5 
Go to UniProtKB:  Q8U0N5
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ8U0N5
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
SM
Query on SM
Download Ideal Coordinates CCD File 
AA [auth E],
L [auth B],
P [auth C],
Q [auth C],
U [auth D],
AA [auth E],
L [auth B],
P [auth C],
Q [auth C],
U [auth D],
Y [auth E],
Z [auth E]
SAMARIUM (III) ION
Sm
DOSGOCSVHPUUIA-UHFFFAOYSA-N		 Ligand Interaction
ZN
Query on ZN
Download Ideal Coordinates CCD File 
F [auth A],
G [auth A],
H [auth A],
I [auth B],
J [auth B],
F [auth A],
G [auth A],
H [auth A],
I [auth B],
J [auth B],
K [auth B],
M [auth C],
N [auth C],
O [auth C],
R [auth D],
S [auth D],
T [auth D],
V [auth E],
W [auth E],
X [auth E]
ZINC ION
Zn
PTFCDOFLOPIGGS-UHFFFAOYSA-N		 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.50 Å
  • R-Value Free: 0.209 
  • R-Value Work: 0.176 
  • R-Value Observed: 0.178 
  • Space Group: C 1 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 257.354α = 90
b = 82.245β = 109.13
c = 116.581γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
Aimlessdata scaling
PDB_EXTRACTdata extraction
XDSdata reduction
SHARPphasing

Structure Validation

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Entry History & Funding Information

Deposition Data

Funding OrganizationLocationGrant Number
The Ministry of Education, Culture, Sports, Science, and TechnologyJapanthe Platform for Drug Discovery, Informatics, and Structural Life Science

Revision History  (Full details and data files)

  • Version 1.0: 2018-04-04
    Type: Initial release
  • Version 1.1: 2018-05-02
    Changes: Data collection, Database references
  • Version 1.2: 2018-06-06
    Changes: Data collection, Database references