4B04

Crystal structure of the Catalytic Domain of Human DUSP26 (C152S)


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.205 Å
  • R-Value Free: 0.266 
  • R-Value Work: 0.200 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

High-Resolution Crystal Structure of the Catalytic Domain of Human Dual-Specificity Phosphatase 26

Won, E.-Y.Xie, Y.Takemoto, C.Chen, L.Liu, Z.-J.Wang, B.C.Lee, D.Woo, E.-J.Park, S.G.Shirouzu, M.Yokoyama, S.Kim, S.J.Chi, S.-W.

(2013) Acta Crystallogr.,Sect.D 69: 1160

  • DOI: 10.1107/S0907444913004770
  • Primary Citation of Related Structures:  2E0T

  • PubMed Abstract: 
  • Dual-specificity phosphatases (DUSPs) play an important role in regulating cellular signalling pathways governing cell growth, differentiation and apoptosis. Human DUSP26 inhibits the apoptosis of cancer cells by dephosphorylating substrates such as ...

    Dual-specificity phosphatases (DUSPs) play an important role in regulating cellular signalling pathways governing cell growth, differentiation and apoptosis. Human DUSP26 inhibits the apoptosis of cancer cells by dephosphorylating substrates such as p38 and p53. High-resolution crystal structures of the DUSP26 catalytic domain (DUSP26-C) and its C152S mutant [DUSP26-C (C152S)] have been determined at 1.67 and 2.20 Å resolution, respectively. The structure of DUSP26-C showed a novel type of domain-swapped dimer formed by extensive crossover of the C-terminal α7 helix. Taken together with the results of a phosphatase-activity assay, structural comparison with other DUSPs revealed that DUSP26-C adopts a catalytically inactive conformation of the protein tyrosine phosphate-binding loop which significantly deviates from that of canonical DUSP structures. In particular, a noticeable difference exists between DUSP26-C and the active forms of other DUSPs at the hinge region of a swapped C-terminal domain. Additionally, two significant gaps were identified between the catalytic core and its surrounding loops in DUSP26-C, which can be exploited as additional binding sites for allosteric enzyme regulation. The high-resolution structure of DUSP26-C may thus provide structural insights into the rational design of DUSP26-targeted anticancer drugs.


    Organizational Affiliation

    Department of Biological Sciences, Korea Advanced Institute of Science and Technology, Daejeon 305-701, Republic of Korea.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
DUAL SPECIFICITY PROTEIN PHOSPHATASE 26
A, B, C, D
160Homo sapiensGene Names: DUSP26 (DUSP24, LDP4, MKP8, NATA1, SKRP3)
EC: 3.1.3.48, 3.1.3.16
Find proteins for Q9BV47 (Homo sapiens)
Go to Gene View: DUSP26
Go to UniProtKB:  Q9BV47
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.205 Å
  • R-Value Free: 0.266 
  • R-Value Work: 0.200 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 82.600α = 90.00
b = 82.780β = 90.00
c = 91.720γ = 90.00
Software Package:
Software NamePurpose
PHENIXrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2013-05-29
    Type: Initial release
  • Version 1.1: 2013-06-05
    Type: Data collection, Database references