7KYK

Crystal structure of Plasmodium falciparum dihydroorotate dehydrogenase bound with Inhibitor DSM589 (ethyl 3-methyl-4-((4-(trifluoromethyl)benzo[d]oxazol-7-yl)methyl)-1H-pyrrole-2-carboxylate)


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.15 Å
  • R-Value Free: 0.224 
  • R-Value Work: 0.183 
  • R-Value Observed: 0.184 

Starting Model: experimental
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Ligand Structure Quality Assessment 


This is version 1.2 of the entry. See complete history


Literature

Potent Antimalarials with Development Potential Identified by Structure-Guided Computational Optimization of a Pyrrole-Based Dihydroorotate Dehydrogenase Inhibitor Series.

Palmer, M.J.Deng, X.Watts, S.Krilov, G.Gerasyuto, A.Kokkonda, S.El Mazouni, F.White, J.White, K.L.Striepen, J.Bath, J.Schindler, K.A.Yeo, T.Shackleford, D.M.Mok, S.Deni, I.Lawong, A.Huang, A.Chen, G.Wang, W.Jayaseelan, J.Katneni, K.Patil, R.Saunders, J.Shahi, S.P.Chittimalla, R.Angulo-Barturen, I.Jimenez-Diaz, M.B.Wittlin, S.Tumwebaze, P.K.Rosenthal, P.J.Cooper, R.A.Aguiar, A.C.C.Guido, R.V.C.Pereira, D.B.Mittal, N.Winzeler, E.A.Tomchick, D.R.Laleu, B.Burrows, J.N.Rathod, P.K.Fidock, D.A.Charman, S.A.Phillips, M.A.

(2021) J Med Chem 64: 6085-6136

  • DOI: https://doi.org/10.1021/acs.jmedchem.1c00173
  • Primary Citation of Related Structures:  
    7KYK, 7KYV, 7KYY, 7KZ4, 7KZY, 7L01, 7L0K

  • PubMed Abstract: 

    Dihydroorotate dehydrogenase (DHODH) has been clinically validated as a target for the development of new antimalarials. Experience with clinical candidate triazolopyrimidine DSM265 ( 1 ) suggested that DHODH inhibitors have great potential for use in prophylaxis, which represents an unmet need in the malaria drug discovery portfolio for endemic countries, particularly in areas of high transmission in Africa. We describe a structure-based computationally driven lead optimization program of a pyrrole-based series of DHODH inhibitors, leading to the discovery of two candidates for potential advancement to preclinical development. These compounds have improved physicochemical properties over prior series frontrunners and they show no time-dependent CYP inhibition, characteristic of earlier compounds. Frontrunners have potent antimalarial activity in vitro against blood and liver schizont stages and show good efficacy in Plasmodium falciparum SCID mouse models. They are equally active against P. falciparum and Plasmodium vivax field isolates and are selective for Plasmodium DHODHs versus mammalian enzymes.


  • Organizational Affiliation

    Medicines for Malaria Venture, 1215 Geneva, Switzerland.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Dihydroorotate dehydrogenase (quinone), mitochondrial
A, B, C, D
401Plasmodium falciparum 3D7Mutation(s): 0 
Gene Names: PFF0160c
EC: 1.3.5.2
UniProt
Find proteins for Q08210 (Plasmodium falciparum (isolate 3D7))
Explore Q08210 
Go to UniProtKB:  Q08210
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ08210
Sequence Annotations
Expand
  • Reference Sequence
Small Molecules
Ligands 3 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
FMN (Subject of Investigation/LOI)
Query on FMN

Download Ideal Coordinates CCD File 
F [auth A],
I [auth B],
L [auth C],
O [auth D]
FLAVIN MONONUCLEOTIDE
C17 H21 N4 O9 P
FVTCRASFADXXNN-SCRDCRAPSA-N
XAJ (Subject of Investigation/LOI)
Query on XAJ

Download Ideal Coordinates CCD File 
E [auth A],
H [auth B],
K [auth C],
N [auth D]
ethyl 3-methyl-4-{[4-(trifluoromethyl)-1,3-benzoxazol-7-yl]methyl}-1H-pyrrole-2-carboxylate
C17 H15 F3 N2 O3
ZZBNHKLWSWWKKF-UHFFFAOYSA-N
ORO (Subject of Investigation/LOI)
Query on ORO

Download Ideal Coordinates CCD File 
G [auth A],
J [auth B],
M [auth C],
P [auth D]
OROTIC ACID
C5 H4 N2 O4
PXQPEWDEAKTCGB-UHFFFAOYSA-N
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.15 Å
  • R-Value Free: 0.224 
  • R-Value Work: 0.183 
  • R-Value Observed: 0.184 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 92.158α = 90
b = 97.542β = 90
c = 186.332γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
HKL-2000data reduction
HKL-2000data scaling
PHASERphasing

Structure Validation

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Ligand Structure Quality Assessment 


Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Institutes of Health/National Institute Of Allergy and Infectious Diseases (NIH/NIAID)United StatesR01AI103947

Revision History  (Full details and data files)

  • Version 1.0: 2021-05-19
    Type: Initial release
  • Version 1.1: 2021-12-08
    Changes: Database references
  • Version 1.2: 2023-10-18
    Changes: Data collection, Refinement description