2RF5

Crystal structure of human tankyrase 1- catalytic PARP domain


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.30 Å
  • R-Value Free: 0.250 
  • R-Value Work: 0.193 
  • R-Value Observed: 0.197 

Starting Model: experimental
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wwPDB Validation   3D Report Full Report


This is version 1.3 of the entry. See complete history


Literature

Zinc binding catalytic domain of human tankyrase 1.

Lehtio, L.Collins, R.van den Berg, S.Johansson, A.Dahlgren, L.G.Hammarstrom, M.Helleday, T.Holmberg-Schiavone, L.Karlberg, T.Weigelt, J.

(2008) J Mol Biol 379: 136-145

  • DOI: https://doi.org/10.1016/j.jmb.2008.03.058
  • Primary Citation of Related Structures:  
    2RF5

  • PubMed Abstract: 

    Tankyrases are recently discovered proteins implicated in many important functions in the cell including telomere homeostasis and mitosis. Tankyrase modulates the activity of target proteins through poly(ADP-ribosyl)ation, and here we report the structure of the catalytic poly(ADP-ribose) polymerase (PARP) domain of human tankyrase 1. This is the first structure of a PARP domain from the tankyrase subfamily. The present structure reveals that tankyrases contain a short zinc-binding motif, which has not been predicted. Tankyrase activity contributes to telomere elongation observed in various cancer cells and tankyrase inhibition has been suggested as a potential route for cancer therapy. In comparison with other PARPs, significant structural differences are observed in the regions lining the substrate-binding site of tankyrase 1. These findings will be of great value to facilitate structure-based design of selective PARP inhibitors, in general, and tankyrase inhibitors, in particular.


  • Organizational Affiliation

    Structural Genomics Consortium, Department of Medical Biochemistry and Biophysics, Karolinska Institutet, S-17177 Stockholm, Sweden.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Tankyrase-1258Homo sapiensMutation(s): 1 
Gene Names: TNKSPARP5APARPLTIN1TINF1TNKS1
EC: 2.4.2.30 (PDB Primary Data), 2.4.2 (UniProt)
UniProt & NIH Common Fund Data Resources
Find proteins for O95271 (Homo sapiens)
Explore O95271 
Go to UniProtKB:  O95271
PHAROS:  O95271
GTEx:  ENSG00000173273 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupO95271
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.30 Å
  • R-Value Free: 0.250 
  • R-Value Work: 0.193 
  • R-Value Observed: 0.197 
  • Space Group: I 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 79.95α = 90
b = 81.24β = 90
c = 82.72γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
XDSdata scaling
XDSdata reduction
XSCALEdata scaling
MOLREPphasing

Structure Validation

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Entry History 

Revision History  (Full details and data files)

  • Version 1.0: 2007-10-09
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Advisory, Version format compliance
  • Version 1.2: 2021-10-20
    Changes: Database references, Derived calculations
  • Version 1.3: 2023-08-30
    Changes: Data collection, Refinement description