9CCC | pdb_00009ccc

Crystal structure of human dihydroorotate dehydrogenase with new alkyne ligand

PDB DOI: https://doi.org/10.2210/pdb9CCC/pdb

Classification: OXIDOREDUCTASE
Organism(s): Homo sapiens
Expression System: Escherichia coli
Mutation(s): No

Deposited: 2024-06-21 Released: 2025-06-25
Deposition Author(s): Purificacao, A.D., Andrade, C.H., Emery, F.S., Nonato, M.C.
Funding Organization(s): Brazilian National Council for Scientific and Technological Development (CNPq), Sao Paulo Research Foundation (FAPESP)

Experimental Data Snapshot

Method: X-RAY DIFFRACTION
Resolution: 2.00 Å
R-Value Free:
0.273 (Depositor), 0.274 (DCC)
R-Value Work:
0.240 (Depositor), 0.240 (DCC)
R-Value Observed:
0.241 (Depositor)

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

Discovery of a novel alkyne-based scaffold inhibitor for human DHODH.

Purificacao, A.D., Vaidergorn, M.M., Silva-Mendonca, S., Silva, W.J.L., Leite, P.I.P., Santos, T., Andrade, C.H., Nonato, M.C., Emery, F.S.

To be published.

Macromolecule Content

Total Structure Weight: 41.31 kDa
Atom Count: 3,083
Modeled Residue Count: 355
Deposited Residue Count: 368
Unique protein chains: 1

Macromolecules

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| 3D Structure

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Dihydroorotate dehydrogenase (quinone), mitochondrial	A	368	Homo sapiens	Mutation(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 Clusters	30% Identity 50% Identity 70% Identity 90% Identity 95% Identity 100% Identity
UniProt Group	Q02127
Sequence Annotations Expand
Reference Sequence

Small Molecules

Ligands 6 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram	3D Interactions
FMN (Subject of Investigation/LOI) Query on FMN Download:Ideal Coordinates CCD File SDF format, chain I [auth A] MOL2 format, chain I [auth A] mmCIF format, chain I [auth A]	I [auth A]	FLAVIN MONONUCLEOTIDE C₁₇ H₂₁ N₄ O₉ P FVTCRASFADXXNN-SCRDCRAPSA-N		Interactions Focus chain I [auth A] Interactions & Density Focus chain I [auth A]
A1AVV (Subject of Investigation/LOI) Query on A1AVV Download:Ideal Coordinates CCD File SDF format, chain C [auth A] MOL2 format, chain C [auth A] mmCIF format, chain C [auth A]	C [auth A]	N-{4-[(3-aminophenyl)ethynyl]phenyl}acetamide C₁₆ H₁₄ N₂ O GDYCMPAYKROXHM-UHFFFAOYSA-N		Interactions Focus chain C [auth A] Interactions & Density Focus chain C [auth A]
ORO (Subject of Investigation/LOI) Query on ORO Download:Ideal Coordinates CCD File SDF format, chain B [auth A] MOL2 format, chain B [auth A] mmCIF format, chain B [auth A]	B [auth A]	OROTIC ACID C₅ H₄ N₂ O₄ PXQPEWDEAKTCGB-UHFFFAOYSA-N		Interactions Focus chain B [auth A] Interactions & Density Focus chain B [auth A]
SO4 Query on SO4 Download:Ideal Coordinates CCD File SDF format, chain D [auth A] SDF format, chain H [auth A] MOL2 format, chain D [auth A] MOL2 format, chain H [auth A] mmCIF format, chain D [auth A] mmCIF format, chain H [auth A]	D [auth A], H [auth A]	SULFATE ION O₄ S QAOWNCQODCNURD-UHFFFAOYSA-L		Interactions Focus chain D [auth A] Focus chain H [auth A] Interactions & Density Focus chain D [auth A] Focus chain H [auth A]
GOL Query on GOL Download:Ideal Coordinates CCD File SDF format, chain E [auth A] SDF format, chain F [auth A] SDF format, chain J [auth A] MOL2 format, chain E [auth A] MOL2 format, chain F [auth A] MOL2 format, chain J [auth A] mmCIF format, chain E [auth A] mmCIF format, chain F [auth A] mmCIF format, chain J [auth A]	E [auth A], F [auth A], J [auth A]	GLYCEROL C₃ H₈ O₃ PEDCQBHIVMGVHV-UHFFFAOYSA-N		Interactions Focus chain E [auth A] Focus chain F [auth A] Focus chain J [auth A] Interactions & Density Focus chain E [auth A] Focus chain F [auth A] Focus chain J [auth A]
CL Query on CL Download:Ideal Coordinates CCD File SDF format, chain G [auth A] MOL2 format, chain G [auth A] mmCIF format, chain G [auth A]	G [auth A]	CHLORIDE ION Cl VEXZGXHMUGYJMC-UHFFFAOYSA-M		Interactions Focus chain G [auth A] Interactions & Density Focus chain G [auth A]

Experimental Data & Validation

Experimental Data

Method: X-RAY DIFFRACTION
Resolution: 2.00 Å
R-Value Free: 0.273 (Depositor), 0.274 (DCC)
R-Value Work: 0.240 (Depositor), 0.240 (DCC)
R-Value Observed: 0.241 (Depositor)

Space Group: P 3₂ 2 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 91.042	α = 90
b = 91.042	β = 90
c = 122.616	γ = 120

Software Package:

Software Name	Purpose
PHENIX	refinement
XDS	data reduction
Aimless	data scaling
pointless	data scaling
PHASER	phasing

Structure Validation

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Ligand Structure Quality Assessment

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Entry History

& Funding Information

Deposition Data

Released Date: 2025-06-25

Deposition Author(s):

Funding Organization	Location	Grant Number
Brazilian National Council for Scientific and Technological Development (CNPq)	Brazil	441038/2020-4
Sao Paulo Research Foundation (FAPESP)	Brazil	2020/06190-0
Sao Paulo Research Foundation (FAPESP)	Brazil	2021/13237-5