Ligand profile

CHEMBL287241

Bioactivity hit from ChEMBL on a similar protein.

Bound to: KP13_31590 — Dihydrofolate reductase type 15

Via homolog UniProt P0ABQ4 Formula C₁₃H₁₆N₄O₂
pchembl 8.38 ~4.2 nM
Mol. weight 260.30 Da
Permeability Check
PAINS Clean

Identifiers

Database identifiers and provenance.

Ligand ID
CHEMBL287241
UniProt (similar protein)
P0ABQ4
pchembl
8.380 (~4.2 nM)
Target protein
KP13_31590

Structure

2D representation rendered from SMILES.

Physicochemical properties

Computed with RDKit from SMILES.

Molecular weight 260.30 Da
LogP (Crippen) 1.25
H-bond donors 2
H-bond acceptors 6
TPSA 96.28 Ų
Rotatable bonds 4
Aromatic rings 2 / 2
Heavy atoms 19
Fraction sp³ C 0.23
Formula C₁₃H₁₆N₄O₂

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 96.3
  • −1 ≤ LogP ≤ 5 1.25
Lipinski's Rule of Five Pass 0 violations
  • MW ≤ 500 Da 260.3
  • LogP ≤ 5 1.25
  • H-bond donors ≤ 5 2
  • H-bond acceptors ≤ 10 6
Veber's rules Pass
  • Rotatable bonds ≤ 10 4
  • TPSA ≤ 140 Ų 96.3
PAINS Clean

No PAINS structural alerts detected.

Chemical representations

Canonical representations for cheminformatics workflows.

SMILES 
COc1cc(Cc2cnc(N)nc2N)cc(OC)c1
InChI 
InChI=1S/C13H16N4O2/c1-18-10-4-8(5-11(6-10)19-2)3-9-7-16-13(15)17-12(9)14/h4-7H,3H2,1-2H3,(H4,14,15,16,17)
InChIKey 
HQXBYBOVCDPXCB-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
ChEMBL
Binding sites
PF00186

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_31590.

PDB 24

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

Ligand PDB entry

ChEMBL 99

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)