6GK0

HUMAN DIHYDROOROTATE DEHYDROGENASE IN COMPLEX WITH CLASS III HISTONE DEACETYLASE INHIBITOR


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.85 Å
  • R-Value Free: 0.193 
  • R-Value Work: 0.168 
  • R-Value Observed: 0.169 

wwPDB Validation   3D Report Full Report


Ligand Structure Quality Assessment 


This is version 1.2 of the entry. See complete history


Literature

Exploitation of dihydroorotate dehydrogenase (DHODH) and p53 activation as therapeutic targets: A case study in polypharmacology.

Ladds, M.J.G.W.Popova, G.Pastor-Fernandez, A.Kannan, S.van Leeuwen, I.M.M.Hakansson, M.Walse, B.Tholander, F.Bhatia, R.Verma, C.S.Lane, D.P.Lain, S.

(2020) J Biol Chem 295: 17935-17949

  • DOI: https://doi.org/10.1074/jbc.RA119.012056
  • Primary Citation of Related Structures:  
    6GK0

  • PubMed Abstract: 

    The tenovins are a frequently studied class of compounds capable of inhibiting sirtuin activity, which is thought to result in increased acetylation and protection of the tumor suppressor p53 from degradation. However, as we and other laboratories have shown previously, certain tenovins are also capable of inhibiting autophagic flux, demonstrating the ability of these compounds to engage with more than one target. In this study, we present two additional mechanisms by which tenovins are able to activate p53 and kill tumor cells in culture. These mechanisms are the inhibition of a key enzyme of the de novo pyrimidine synthesis pathway, dihydroorotate dehydrogenase (DHODH), and the blockage of uridine transport into cells. These findings hold a 3-fold significance: first, we demonstrate that tenovins, and perhaps other compounds that activate p53, may activate p53 by more than one mechanism; second, that work previously conducted with certain tenovins as SirT1 inhibitors should additionally be viewed through the lens of DHODH inhibition as this is a major contributor to the mechanism of action of the most widely used tenovins; and finally, that small changes in the structure of a small molecule can lead to a dramatic change in the target profile of the molecule even when the phenotypic readout remains static.


  • Organizational Affiliation

    Department of Microbiology, Tumor and Cell Biology, Karolinska Institutet, Stockholm, Sweden; SciLifeLab, Department of Microbiology, Tumor and Cell Biology, Karolinska Institutet, Stockholm, Sweden. Electronic address: m.ladds@beatson.gla.ac.uk.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Dihydroorotate dehydrogenase (quinone), mitochondrial367Homo sapiensMutation(s): 0 
Gene Names: DHODH
EC: 1.3.5.2
UniProt & NIH Common Fund Data Resources
Find proteins for Q02127 (Homo sapiens)
Explore Q02127 
Go to UniProtKB:  Q02127
PHAROS:  Q02127
GTEx:  ENSG00000102967 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ02127
Sequence Annotations
Expand
  • Reference Sequence
Small Molecules
Ligands 8 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
FMN
Query on FMN

Download Ideal Coordinates CCD File 
B [auth A]FLAVIN MONONUCLEOTIDE
C17 H21 N4 O9 P
FVTCRASFADXXNN-SCRDCRAPSA-N
F1W
Query on F1W

Download Ideal Coordinates CCD File 
P [auth A]4-~{tert}-butyl-~{N}-[[4-[5-(dimethylamino)pentanoylamino]phenyl]carbamothioyl]benzamide
C25 H34 N4 O2 S
BVJSXSQRIUSRCO-UHFFFAOYSA-N
DDQ
Query on DDQ

Download Ideal Coordinates CCD File 
M [auth A]DECYLAMINE-N,N-DIMETHYL-N-OXIDE
C12 H27 N O
ZRKZFNZPJKEWPC-UHFFFAOYSA-N
DOR
Query on DOR

Download Ideal Coordinates CCD File 
C [auth A](4S)-2,6-DIOXOHEXAHYDROPYRIMIDINE-4-CARBOXYLIC ACID
C5 H6 N2 O4
UFIVEPVSAGBUSI-REOHCLBHSA-N
SO4
Query on SO4

Download Ideal Coordinates CCD File 
G [auth A],
H [auth A],
I [auth A],
K [auth A],
L [auth A]
SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
GOL
Query on GOL

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F [auth A]GLYCEROL
C3 H8 O3
PEDCQBHIVMGVHV-UHFFFAOYSA-N
ACY
Query on ACY

Download Ideal Coordinates CCD File 
D [auth A],
E [auth A],
N [auth A],
O [auth A]
ACETIC ACID
C2 H4 O2
QTBSBXVTEAMEQO-UHFFFAOYSA-N
CL
Query on CL

Download Ideal Coordinates CCD File 
J [auth A]CHLORIDE ION
Cl
VEXZGXHMUGYJMC-UHFFFAOYSA-M
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.85 Å
  • R-Value Free: 0.193 
  • R-Value Work: 0.168 
  • R-Value Observed: 0.169 
  • Space Group: P 32 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 90.524α = 90
b = 90.524β = 90
c = 122.806γ = 120
Software Package:
Software NamePurpose
REFMACrefinement
XDSdata reduction
XSCALEdata scaling
REFMACphasing

Structure Validation

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Ligand Structure Quality Assessment 


Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2019-11-27
    Type: Initial release
  • Version 1.1: 2021-04-14
    Changes: Database references
  • Version 1.2: 2024-05-15
    Changes: Data collection, Database references