6FY4

Structure of human NAD(P) H:quinone oxidoreductase in complex with N-(2-bromophenyl)pyrrolidine-1-sulfonamide


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.76 Å
  • R-Value Free: 0.290 
  • R-Value Work: 0.218 
  • R-Value Observed: 0.222 

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Ligand Structure Quality Assessment 


This is version 1.2 of the entry. See complete history


Literature

A small molecule chaperone rescues the stability and activity of a cancer-associated variant of NAD(P)H:quinone oxidoreductase 1 in vitro.

Strandback, E.Lienhart, W.D.Hromic-Jahjefendic, A.Bourgeois, B.Hogler, A.Waltenstorfer, D.Winkler, A.Zangger, K.Madl, T.Gruber, K.Macheroux, P.

(2020) FEBS Lett 594: 424-438

  • DOI: https://doi.org/10.1002/1873-3468.13636
  • Primary Citation of Related Structures:  
    6FY4

  • PubMed Abstract: 

    NAD(P)H:quinone oxidoreductase 1 (NQO1) is a human FAD-dependent enzyme that plays a crucial role in the antioxidant defense system. A naturally occurring single-nucleotide polymorphism (NQO1*2) in the NQO1 gene leads to an amino acid substitution (P187S), which severely compromises the activity and stability of the enzyme. The NQO1*2 genotype has been linked to a higher risk for several types of cancer and poor survival rate after anthracycline-based chemotherapy. In this study, we show that a small molecular chaperone (N-(2-bromophenyl)pyrrolidine-1-sulfonamide) repopulates the native wild-type conformation. As a consequence of the stabilizing effect, the enzymatic activity of the P187S variant protein is strongly improved in the presence of the molecular chaperone in vitro.


  • Organizational Affiliation

    Gottfried Schatz Research Center for Cell Signaling, Metabolism and Aging, Molecular Biology and Biochemistry, Medical University of Graz, Austria.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
NAD(P)H dehydrogenase [quinone] 1
A, B, C, D
274Homo sapiensMutation(s): 0 
Gene Names: NQO1DIA4NMOR1
EC: 1.6.5.2
UniProt & NIH Common Fund Data Resources
Find proteins for P15559 (Homo sapiens)
Explore P15559 
Go to UniProtKB:  P15559
PHAROS:  P15559
GTEx:  ENSG00000181019 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP15559
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.76 Å
  • R-Value Free: 0.290 
  • R-Value Work: 0.218 
  • R-Value Observed: 0.222 
  • Space Group: P 31 1 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 121.369α = 90
b = 121.369β = 90
c = 158.252γ = 120
Software Package:
Software NamePurpose
PHENIXrefinement
MOSFLMdata reduction
Aimlessdata scaling
PHASERphasing

Structure Validation

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Ligand Structure Quality Assessment 


Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2019-03-20
    Type: Initial release
  • Version 1.1: 2020-04-01
    Changes: Database references
  • Version 1.2: 2024-01-17
    Changes: Data collection, Database references, Refinement description