4WOH

Structure of of human dual-specificity phosphatase 22 (E24A/K28A/K30A/C88S) complexed with 4-nitrophenolphosphate


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.34 Å
  • R-Value Free: 0.165 
  • R-Value Work: 0.140 
  • R-Value Observed: 0.142 

Starting Model: experimental
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This is version 1.2 of the entry. See complete history


Literature

Structural analysis of human dual-specificity phosphatase 22 complexed with a phosphotyrosine-like substrate.

Lountos, G.T.Cherry, S.Tropea, J.E.Waugh, D.S.

(2015) Acta Crystallogr F Struct Biol Commun 71: 199-205

  • DOI: https://doi.org/10.1107/S2053230X15000217
  • Primary Citation of Related Structures:  
    4WOH

  • PubMed Abstract: 

    4-Nitrophenyl phosphate (p-nitrophenyl phosphate, pNPP) is widely used as a small molecule phosphotyrosine-like substrate in activity assays for protein tyrosine phosphatases. It is a colorless substrate that upon hydrolysis is converted to a yellow 4-nitrophenolate ion that can be monitored by absorbance at 405 nm. Therefore, the pNPP assay has been widely adopted as a quick and simple method to assess phosphatase activity and is also commonly used in assays to screen for inhibitors. Here, the first crystal structure is presented of a dual-specificity phosphatase, human dual-specificity phosphatase 22 (DUSP22), in complex with pNPP. The structure illuminates the molecular basis for substrate binding and may also facilitate the structure-assisted development of DUSP22 inhibitors.


  • Organizational Affiliation

    Basic Science Program, Leidos Biomedical Research Inc., Frederick National Laboratory for Cancer Research, Frederick, MD 21702, USA.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Dual specificity protein phosphatase 22166Homo sapiensMutation(s): 4 
Gene Names: DUSP22JSP1LMWDSP2MKPX
EC: 3.1.3.16 (PDB Primary Data), 3.1.3.48 (PDB Primary Data)
UniProt & NIH Common Fund Data Resources
Find proteins for Q9NRW4 (Homo sapiens)
Explore Q9NRW4 
Go to UniProtKB:  Q9NRW4
PHAROS:  Q9NRW4
GTEx:  ENSG00000112679 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ9NRW4
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.34 Å
  • R-Value Free: 0.165 
  • R-Value Work: 0.140 
  • R-Value Observed: 0.142 
  • Space Group: C 1 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 89.816α = 90
b = 49.632β = 94.88
c = 39.899γ = 90
Software Package:
Software NamePurpose
REFMACrefinement

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2015-02-18
    Type: Initial release
  • Version 1.1: 2015-03-04
    Changes: Database references
  • Version 1.2: 2023-09-27
    Changes: Data collection, Database references, Derived calculations, Other, Refinement description, Source and taxonomy