Biological Assembly 1  

 3D View: Structure | Electron Density | Ligand Interaction

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 1 assigned by authors and generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 29.57 kDa 
• Atom Count: 1767 
• Residue Count: 207 
• Unique protein chains: 1

2RF5

Crystal structure of human tankyrase 1- catalytic PARP domain

• DOI: 10.2210/pdb2RF5/pdb

• Classification: TRANSFERASE
• Organism(s): Homo sapiens
• Expression System: Escherichia coli
• Mutation(s): Yes 


• Deposited: 2007-09-28 Released: 2007-10-09 
• Deposition Author(s): Lehtio, L., Karlberg, T., Arrowsmith, C.H., Berglund, H., Busam, R., Collins, R., Dahlgren, L.G., Edwards, A.M., Flodin, S., Flores, A., Graslund, S., Hammarstrom, M., Herman, M.D., Holmberg-Schiavone, L., Johansson, I., Kallas, A., Kotenyova, T., Moche, M., Nordlund, P., Nyman, T., Persson, C., Sagemark, J., Sundstrom, M., Thorsell, A.G., Tresaugues, L., van den Berg, S., Welin, M., Weigelt, J., Structural Genomics Consortium (SGC)

---

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 

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

• PubMed: 18436240 
• DOI: 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

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Tankyrase-1	A	258	Homo sapiens	Mutation(s): 1  Gene Names: TNKS, PARP5A, PARPL, TIN1, TINF1, TNKS1 EC: 2.4.2.30 (PDB Primary Data), 2.4.2 (UniProt)
Find proteins for O95271 (Homo sapiens) Explore O95271  Go to UniProtKB:  O95271
NIH Common Fund Data Resources
PHAROS:  O95271 GTEx:  ENSG00000173273

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
GOL	A	GLYCEROL C3 H8 O3 PEDCQBHIVMGVHV-UHFFFAOYSA-N
ZN	A	ZINC ION Zn PTFCDOFLOPIGGS-UHFFFAOYSA-N

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 = 79.95	α = 90
b = 81.24	β = 90
c = 82.72	γ = 90

Software Package:

Software Name	Purpose
REFMAC	refinement
XDS	data scaling
XDS	data reduction
XSCALE	data scaling
MOLREP	phasing

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2007-09-28 
• Released Date: 2007-10-09 
Deposition Author(s): Lehtio, L., Karlberg, T., Arrowsmith, C.H., Berglund, H., Busam, R., Collins, R., Dahlgren, L.G., Edwards, A.M., Flodin, S., Flores, A., Graslund, S., Hammarstrom, M., Herman, M.D., Holmberg-Schiavone, L., Johansson, I., Kallas, A., Kotenyova, T., Moche, M., Nordlund, P., Nyman, T., Persson, C., Sagemark, J., Sundstrom, M., Thorsell, A.G., Tresaugues, L., van den Berg, S., Welin, M., Weigelt, J., Structural Genomics Consortium (SGC)

Revision History 

• Version 1.0: 2007-10-09
  Type: Initial release
  
• Version 1.1: 2011-07-13
  Changes: Advisory, Version format compliance