Ligand profile

CHEMBL13673

Bioactivity hit from ChEMBL on a similar protein.

Bound to: KP13_01960 — Dihydrofolate reductase

Via homolog UniProt P0ABQ4 Formula C₁₈H₂₄N₄O₅
pchembl 10.18 ~0.1 nM
Mol. weight 376.41 Da
Permeability Check
PAINS Clean

Identifiers

Database identifiers and provenance.

Ligand ID
CHEMBL13673
UniProt (similar protein)
P0ABQ4
pchembl
10.180 (~0.1 nM)
Target protein
KP13_01960

Structure

2D representation rendered from SMILES.

Physicochemical properties

Computed with RDKit from SMILES.

Molecular weight 376.41 Da
LogP (Crippen) 1.88
H-bond donors 3
H-bond acceptors 8
TPSA 142.81 Ų
Rotatable bonds 10
Aromatic rings 2 / 2
Heavy atoms 27
Fraction sp³ C 0.39
Formula C₁₈H₂₄N₄O₅

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 142.8
  • −1 ≤ LogP ≤ 5 1.88
Lipinski's Rule of Five Pass 0 violations
  • MW ≤ 500 Da 376.4
  • LogP ≤ 5 1.88
  • H-bond donors ≤ 5 3
  • H-bond acceptors ≤ 10 8
Veber's rules Fail
  • Rotatable bonds ≤ 10 10
  • TPSA ≤ 140 Ų 142.8
PAINS Clean

No PAINS structural alerts detected.

Chemical representations

Canonical representations for cheminformatics workflows.

SMILES 
COc1cc(Cc2cnc(N)nc2N)cc(OCCCCC(=O)O)c1OC
InChI 
InChI=1S/C18H24N4O5/c1-25-13-8-11(7-12-10-21-18(20)22-17(12)19)9-14(16(13)26-2)27-6-4-3-5-15(23)24/h8-10H,3-7H2,1-2H3,(H,23,24)(H4,19,20,21,22)
InChIKey 
WQLAOYIDSJBSPE-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_01960.

PDB 34

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)