N-terminal domain of VDUP-1

Experimental Data Snapshot

  • Resolution: 1.50 Å
  • R-Value Free: 0.203 
  • R-Value Work: 0.180 
  • R-Value Observed: 0.182 

wwPDB Validation   3D Report Full Report

This is version 1.4 of the entry. See complete history


Structure of the N-terminal domain of human thioredoxin-interacting protein.

Polekhina, G.Ascher, D.B.Kok, S.F.Beckham, S.Wilce, M.Waltham, M.

(2013) Acta Crystallogr D Biol Crystallogr 69: 333-344

  • DOI: https://doi.org/10.1107/S0907444912047099
  • Primary Citation of Related Structures:  
    4GEI, 4GEJ

  • PubMed Abstract: 

    Thioredoxin-interacting protein (TXNIP) is one of the six known α-arrestins and has recently received considerable attention owing to its involvement in redox signalling and metabolism. Various stress stimuli such as high glucose, heat shock, UV, H2O2 and mechanical stress among others robustly induce the expression of TXNIP, resulting in the sequestration and inactivation of thioredoxin, which in turn leads to cellular oxidative stress. While TXNIP is the only α-arrestin known to bind thioredoxin, TXNIP and two other α-arrestins, Arrdc4 and Arrdc3, have been implicated in metabolism. Furthermore, owing to its roles in the pathologies of diabetes and cardiovascular disease, TXNIP is considered to be a promising drug target. Based on their amino-acid sequences, TXNIP and the other α-arrestins are remotely related to β-arrestins. Here, the crystal structure of the N-terminal domain of TXNIP is reported. It provides the first structural information on any of the α-arrestins and reveals that although TXNIP adopts a β-arrestin fold as predicted, it is structurally more similar to Vps26 proteins than to β-arrestins, while sharing below 15% pairwise sequence identity with either.

  • Organizational Affiliation

    Centre for Cancer Research, Monash Institute of Medical Research, Monash University, 27-31 Wright Street, Clayton, VIC 3168, Australia. galina.polekhina@monash.edu

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Thioredoxin-interacting protein150Homo sapiensMutation(s): 4 
Gene Names: TXNIPVDUP1
UniProt & NIH Common Fund Data Resources
Find proteins for Q9H3M7 (Homo sapiens)
Explore Q9H3M7 
Go to UniProtKB:  Q9H3M7
GTEx:  ENSG00000265972 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ9H3M7
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Resolution: 1.50 Å
  • R-Value Free: 0.203 
  • R-Value Work: 0.180 
  • R-Value Observed: 0.182 
  • Space Group: C 1 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 98.25α = 90
b = 76.28β = 92.65
c = 31.03γ = 90
Software Package:
Software NamePurpose
Blu-Icedata collection
PHENIXmodel building
MOSFLMdata reduction
SCALAdata scaling

Structure Validation

View Full Validation Report

Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2013-02-27
    Type: Initial release
  • Version 1.1: 2013-07-10
    Changes: Database references
  • Version 1.2: 2017-11-15
    Changes: Refinement description
  • Version 1.3: 2024-02-28
    Changes: Data collection, Database references
  • Version 1.4: 2024-04-03
    Changes: Refinement description