5GP7

Structural basis for the binding between Tankyrase-1 and USP25


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.502 Å
  • R-Value Free: 0.207 
  • R-Value Work: 0.172 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

USP25 regulates Wnt signaling by controlling the stability of tankyrases

Xu, D.Liu, J.Fu, T.Shan, B.Qian, L.Pan, L.Yuan, J.

(2017) Genes Dev. 31: 1024-1035

  • DOI: 10.1101/gad.300889.117

  • PubMed Abstract: 
  • Aberrant activation of the Wnt signaling pathway plays an important role in human cancer development. Wnt signaling is negatively regulated by Axin, a scaffolding protein that controls a rate-limiting step in the destruction of β-catenin, the central ...

    Aberrant activation of the Wnt signaling pathway plays an important role in human cancer development. Wnt signaling is negatively regulated by Axin, a scaffolding protein that controls a rate-limiting step in the destruction of β-catenin, the central activator of the Wnt pathway. In Wnt-stimulated cells, Axin is rapidly modified by tankyrase-mediated poly(ADP-ribosyl)ation, which promotes the proteolysis of Axin and consequent stabilization of β-catenin. Thus, regulation of the levels and activity of tankyrases is mechanistically important in controlling Wnt signaling. Here, we identify ubiquitin-specific protease 25 (USP25) as a positive regulator of Wnt/β-catenin signaling. We found that USP25 directly interacted with tankyrases to promote their deubiquitination and stabilization. We demonstrated that USP25 deficiency could promote the degradation of tankyrases and consequent stabilization of Axin to antagonize Wnt signaling. We further characterized the interaction between TNKS1 and USP25 by X-ray crystal structure determination. Our results provide important new insights into the molecular mechanism that regulates the turnover of tankyrases and the possibility of targeting the stability of tankyrases by antagonizing their interaction with USP25 to modulate the Wnt/β-catenin pathway.


    Organizational Affiliation

    Interdisciplinary Research Center on Biology and Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Pudong, Shanghai 201210, China.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Tankyrase-1
A
169Homo sapiensMutation(s): 0 
Gene Names: TNKS (PARP5A, PARPL, TIN1, TINF1, TNKS1)
EC: 2.4.2.30
Find proteins for O95271 (Homo sapiens)
Go to Gene View: TNKS
Go to UniProtKB:  O95271
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Ubiquitin carboxyl-terminal hydrolase 25
B
10Homo sapiensMutation(s): 0 
Gene Names: USP25 (USP21)
EC: 3.4.19.12
Find proteins for Q9UHP3 (Homo sapiens)
Go to Gene View: USP25
Go to UniProtKB:  Q9UHP3
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
GOL
Query on GOL

Download SDF File 
Download CCD File 
A
GLYCEROL
GLYCERIN; PROPANE-1,2,3-TRIOL
C3 H8 O3
PEDCQBHIVMGVHV-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.502 Å
  • R-Value Free: 0.207 
  • R-Value Work: 0.172 
  • Space Group: P 1 21 1
Unit Cell:
Length (Å)Angle (°)
a = 35.506α = 90.00
b = 59.242β = 100.68
c = 39.995γ = 90.00
Software Package:
Software NamePurpose
HKL-3000data reduction
PHENIXrefinement
HKL-3000data scaling
HKL-3000phasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2017-07-12
    Type: Initial release
  • Version 1.1: 2017-09-27
    Type: Data collection