Ligand profile

OQQ

Ligand co-crystallized with a similar protein (Protein Data Bank).

Bound to: KP13_02055 — Queuine tRNA-ribosyltransferase

Via homolog PDB 6ygs UniProt P28720 Formula C₁₉H₁₇F₃N₆O
Mol. weight 402.38 Da
Permeability Check
PAINS Clean

Identifiers

Database identifiers and provenance.

Ligand ID
OQQ
PDB
6ygs
UniProt (similar protein)
P28720
Target protein
KP13_02055

Structure

2D representation rendered from SMILES.

Physicochemical properties

Computed with RDKit from SMILES.

Molecular weight 402.38 Da
LogP (Crippen) 3.23
H-bond donors 4
H-bond acceptors 5
TPSA 112.48 Ų
Rotatable bonds 4
Aromatic rings 4 / 4
Heavy atoms 29
Fraction sp³ C 0.21
Formula C₁₉H₁₇F₃N₆O

Drug-likeness

Descriptor-based ADME screening flags from SMILES. These are not experimental toxicity results.

Permeability proxy Check

Estimated from TPSA and LogP only: TPSA ≤ 90 Ų and −1 ≤ LogP ≤ 5 are treated as a favorable small-molecule permeability screen.

  • TPSA ≤ 90 Ų 112.5
  • −1 ≤ LogP ≤ 5 3.23
Lipinski's Rule of Five Pass 0 violations
  • MW ≤ 500 Da 402.4
  • LogP ≤ 5 3.23
  • H-bond donors ≤ 5 4
  • H-bond acceptors ≤ 10 5
Veber's rules Pass
  • Rotatable bonds ≤ 10 4
  • TPSA ≤ 140 Ų 112.5
PAINS Clean

No PAINS structural alerts detected.

Chemical representations

Canonical representations for cheminformatics workflows.

SMILES 
CNc1[nH]c2cc3c(c(c2n1)CCc4ccc(cc4)C(F)(F)F)NC(=NC3=O)N
InChI 
InChI=1S/C19H17F3N6O/c1-24-18-25-13-8-12-14(26-17(23)28-16(12)29)11(15(13)27-18)7-4-9-2-5-10(6-3-9)19(20,21)22/h2-3,5-6,8H,4,7H2,1H3,(H2,24,25,27)(H3,23,26,28,29)
InChIKey 
ZWUPQNLDYYEWTK-UHFFFAOYSA-N

Provenance

Annotation context from LigQ_2, the internal Target step that collects PDB, ChEMBL, and ZINC ligand evidence.

Method
LigQ nearest_k
Source
PDB
Binding sites
PF01702

External resources

Open this ligand in third-party databases and cheminformatics tools.

Other ligands for this protein

Quick navigation to other ligands bound to KP13_02055.

PDB 60

Ligands co-crystallized with this protein (structural evidence).

Ligand PDB entry

ChEMBL 5

Compounds with measured inhibitory activity on this target (higher pchembl = more potent).

Compound Potency (pchembl)

ZINC 50

Virtual screening candidates selected by structural similarity to known actives (Tanimoto ≥ 0.5).

Compound Similarity (Tanimoto)