Ligand profile

CHEMBL300371

Bioactivity hit from ChEMBL on a similar protein.

Bound to: KP13_31590 — Dihydrofolate reductase type 15

Via homolog UniProt P00382 Formula C₁₉H₂₅N₅
pchembl 8.59 ~2.6 nM
Mol. weight 323.44 Da
Permeability High
PAINS Clean

Identifiers

Database identifiers and provenance.

Ligand ID
CHEMBL300371
UniProt (similar protein)
P00382
pchembl
8.590 (~2.6 nM)
Target protein
KP13_31590

Structure

2D representation rendered from SMILES.

Physicochemical properties

Computed with RDKit from SMILES.

Molecular weight 323.44 Da
LogP (Crippen) 3.40
H-bond donors 3
H-bond acceptors 5
TPSA 89.85 Ų
Rotatable bonds 3
Aromatic rings 2 / 3
Heavy atoms 24
Fraction sp³ C 0.37
Formula C₁₉H₂₅N₅

Drug-likeness

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

Permeability proxy High

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 89.8
  • −1 ≤ LogP ≤ 5 3.40
Lipinski's Rule of Five Pass 0 violations
  • MW ≤ 500 Da 323.4
  • LogP ≤ 5 3.40
  • H-bond donors ≤ 5 3
  • H-bond acceptors ≤ 10 5
Veber's rules Pass
  • Rotatable bonds ≤ 10 3
  • TPSA ≤ 140 Ų 89.8
PAINS Clean

No PAINS structural alerts detected.

Chemical representations

Canonical representations for cheminformatics workflows.

SMILES 
CCc1cc(Cc2cnc(N)nc2N)cc2c1NC(C)(C)C=C2C
InChI 
InChI=1S/C19H25N5/c1-5-13-6-12(7-14-10-22-18(21)23-17(14)20)8-15-11(2)9-19(3,4)24-16(13)15/h6,8-10,24H,5,7H2,1-4H3,(H4,20,21,22,23)
InChIKey 
HKYABJILRFCIHU-UHFFFAOYSA-N

Provenance

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

Method
LigQ sequence
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)