Ligand profile

FKH

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

Bound to: KP13_00665 — Glucose-1-phosphate adenylyltransferase

Via homolog PDB 5fu0 UniProt Q9HU22 Formula C₁₉H₂₀N₄O₄S
Mol. weight 400.46 Da
Permeability Check
PAINS Clean

Identifiers

Database identifiers and provenance.

Ligand ID
FKH
PDB
5fu0
UniProt (similar protein)
Q9HU22
Target protein
KP13_00665

Structure

2D representation rendered from SMILES.

Physicochemical properties

Computed with RDKit from SMILES.

Molecular weight 400.46 Da
LogP (Crippen) 1.30
H-bond donors 2
H-bond acceptors 6
TPSA 118.26 Ų
Rotatable bonds 5
Aromatic rings 3 / 3
Heavy atoms 28
Fraction sp³ C 0.16
Formula C₁₉H₂₀N₄O₄S

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 118.3
  • −1 ≤ LogP ≤ 5 1.30
Lipinski's Rule of Five Pass 0 violations
  • MW ≤ 500 Da 400.5
  • LogP ≤ 5 1.30
  • H-bond donors ≤ 5 2
  • H-bond acceptors ≤ 10 6
Veber's rules Pass
  • Rotatable bonds ≤ 10 5
  • TPSA ≤ 140 Ų 118.3
PAINS Clean

No PAINS structural alerts detected.

Chemical representations

Canonical representations for cheminformatics workflows.

SMILES 
Cc1cccc(c1)CN2C(=C(C(=O)NC2=O)N(C)S(=O)(=O)c3ccccc3)N
InChI 
InChI=1S/C19H20N4O4S/c1-13-7-6-8-14(11-13)12-23-17(20)16(18(24)21-19(23)25)22(2)28(26,27)15-9-4-3-5-10-15/h3-11H,12,20H2,1-2H3,(H,21,24,25)
InChIKey 
RDABNCDTRJGKTF-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
PF00483

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_00665.

PDB 30

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

Ligand PDB entry

ZINC 50

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

Compound Similarity (Tanimoto)