Ligand profile

FOL

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

Bound to: KP13_01960 — Dihydrofolate reductase

Via homolog PDB 3ql0 UniProt Q1RGF0 Formula C₁₉H₁₉N₇O₆
Mol. weight 441.40 Da
Permeability Check
PAINS Clean

Identifiers

Database identifiers and provenance.

Ligand ID
FOL
PDB
3ql0
UniProt (similar protein)
Q1RGF0
Target protein
KP13_01960

Structure

2D representation rendered from SMILES.

Physicochemical properties

Computed with RDKit from SMILES.

Molecular weight 441.40 Da
LogP (Crippen) -0.04
H-bond donors 6
H-bond acceptors 9
TPSA 213.28 Ų
Rotatable bonds 9
Aromatic rings 3 / 3
Heavy atoms 32
Fraction sp³ C 0.21
Formula C₁₉H₁₉N₇O₆

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 213.3
  • −1 ≤ LogP ≤ 5 -0.04
Lipinski's Rule of Five Pass 1 violation
  • MW ≤ 500 Da 441.4
  • LogP ≤ 5 -0.04
  • H-bond donors ≤ 5 6
  • H-bond acceptors ≤ 10 9
Veber's rules Fail
  • Rotatable bonds ≤ 10 9
  • TPSA ≤ 140 Ų 213.3
PAINS Clean

No PAINS structural alerts detected.

Chemical representations

Canonical representations for cheminformatics workflows.

SMILES 
c1cc(ccc1C(=O)N[C@@H](CCC(=O)O)C(=O)O)NCc2cnc3c(n2)C(=O)N=C(N3)N
InChI 
InChI=1S/C19H19N7O6/c20-19-25-15-14(17(30)26-19)23-11(8-22-15)7-21-10-3-1-9(2-4-10)16(29)24-12(18(31)32)5-6-13(27)28/h1-4,8,12,21H,5-7H2,(H,24,29)(H,27,28)(H,31,32)(H3,20,22,25,26,30)/t12-/m0/s1
InChIKey 
OVBPIULPVIDEAO-LBPRGKRZSA-N

Provenance

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

Method
LigQ sequence
Source
PDB
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 33

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

Ligand PDB entry

ChEMBL 100

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)