9DKQ

Crystal structure of Plasmodium falciparum dihydroorotate dehydrogenase bound with Inhibitor DSM1153 (4,6-dicyclopropyl-3-(3-fluoro-4-(trifluoromethyl)benzyl)-2-methyl-2,6-dihydro-7H-pyrazolo[3,4-d]pyridazin-7-one)


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.15 Å
  • R-Value Free: 0.210 
  • R-Value Work: 0.173 
  • R-Value Observed: 0.182 

Starting Model: experimental
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wwPDB Validation   3D Report Full Report


Ligand Structure Quality Assessment 


This is version 1.0 of the entry. See complete history


Literature

Structure-Based Discovery and Development of Highly Potent Dihydroorotate Dehydrogenase Inhibitors for Malaria Chemoprevention.

Nie, Z.Bonnert, R.Tsien, J.Deng, X.Higgs, C.El Mazouni, F.Zhang, X.Li, R.Ho, N.Feher, V.Paulsen, J.Shackleford, D.M.Katneni, K.Chen, G.Ng, A.C.F.McInerney, M.Wang, W.Saunders, J.Collins, D.Yan, D.Li, P.Campbell, M.Patil, R.Ghoshal, A.Mondal, P.Kundu, A.Chittimalla, R.Mahadeva, M.Kokkonda, S.White, J.Das, R.Mukherjee, P.Angulo-Barturen, I.Jimenez-Diaz, M.B.Malmstrom, R.Lawrenz, M.Rodriguez-Granillo, A.Rathod, P.K.Tomchick, D.R.Palmer, M.J.Laleu, B.Qin, T.Charman, S.A.Phillips, M.A.

(2024) J Med Chem 

  • DOI: https://doi.org/10.1021/acs.jmedchem.4c02394
  • Primary Citation of Related Structures:  
    9DI6, 9DIK, 9DIZ, 9DKQ, 9DKY, 9DLK, 9DLY

  • PubMed Abstract: 

    Malaria remains a serious global health challenge, yet treatment and control programs are threatened by drug resistance. Dihydroorotate dehydrogenase (DHODH) was clinically validated as a target for treatment and prevention of malaria through human studies with DSM265, but currently no drugs against this target are in clinical use. We used structure-based computational tools including free energy perturbation (FEP+) to discover highly ligand efficient, potent, and selective pyrazole-based Plasmodium DHODH inhibitors through a scaffold hop from a pyrrole-based series. Optimized pyrazole-based compounds were identified with low nM-to-pM Plasmodium falciparum cell potency and oral activity in a humanized SCID mouse malaria infection model. The lead compound DSM1465 is more potent and has improved absorption, distribution, metabolism and excretion/pharmacokinetic (ADME/PK) properties compared to DSM265 that support the potential for once-monthly chemoprevention at a low dose. This compound meets the objective of identifying compounds with potential to be used for monthly chemoprevention in Africa to support malaria elimination efforts.


  • Organizational Affiliation

    Schrödinger Inc., 1540 Broadway, New York, New York 10036, United States.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Dihydroorotate dehydrogenase (quinone), mitochondrial401Plasmodium 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
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  • Reference Sequence
Small Molecules
Ligands 3 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
FMN
Query on FMN

Download Ideal Coordinates CCD File 
C [auth A]FLAVIN MONONUCLEOTIDE
C17 H21 N4 O9 P
FVTCRASFADXXNN-SCRDCRAPSA-N
A1A5Q (Subject of Investigation/LOI)
Query on A1A5Q

Download Ideal Coordinates CCD File 
B [auth A]4,6-dicyclopropyl-3-{[3-fluoro-4-(trifluoromethyl)phenyl]methyl}-2-methyl-2,6-dihydro-7H-pyrazolo[3,4-d]pyridazin-7-one
C20 H18 F4 N4 O
YHZZQODDECZIPY-UHFFFAOYSA-N
OG6
Query on OG6

Download Ideal Coordinates CCD File 
D [auth A]6-[bis(oxidanyl)methyl]-5~{H}-pyrimidine-2,4-dione
C5 H6 N2 O4
DUGHQFVNXIWPEA-UHFFFAOYSA-N
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.15 Å
  • R-Value Free: 0.210 
  • R-Value Work: 0.173 
  • R-Value Observed: 0.182 
  • Space Group: P 64
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 85.615α = 90
b = 85.615β = 90
c = 140.161γ = 120
Software Package:
Software NamePurpose
PHENIXrefinement
HKL-3000data reduction
HKL-3000data 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: 2025-01-01
    Type: Initial release