Ligand profile

O4G

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

Bound to: KP13_00363 — LpxA-like domain-containing transferase

Via homolog PDB 6p88 UniProt P21645 Formula C₂₀H₁₆N₂O₅
Mol. weight 364.36 Da
Permeability High
PAINS Clean

Identifiers

Database identifiers and provenance.

Ligand ID
O4G
PDB
6p88
UniProt (similar protein)
P21645
Target protein
KP13_00363

Structure

2D representation rendered from SMILES.

Physicochemical properties

Computed with RDKit from SMILES.

Molecular weight 364.36 Da
LogP (Crippen) 3.56
H-bond donors 2
H-bond acceptors 5
TPSA 89.80 Ų
Rotatable bonds 4
Aromatic rings 3 / 4
Heavy atoms 27
Fraction sp³ C 0.10
Formula C₂₀H₁₆N₂O₅

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 3.56
Lipinski's Rule of Five Pass 0 violations
  • MW ≤ 500 Da 364.4
  • LogP ≤ 5 3.56
  • H-bond donors ≤ 5 2
  • H-bond acceptors ≤ 10 5
Veber's rules Pass
  • Rotatable bonds ≤ 10 4
  • TPSA ≤ 140 Ų 89.8
PAINS Clean

No PAINS structural alerts detected.

Chemical representations

Canonical representations for cheminformatics workflows.

SMILES 
c1cc(cc(c1)NC(=O)c2ccco2)NC(=O)c3ccc4c(c3)OCCO4
InChI 
InChI=1S/C20H16N2O5/c23-19(13-6-7-16-18(11-13)27-10-9-26-16)21-14-3-1-4-15(12-14)22-20(24)17-5-2-8-25-17/h1-8,11-12H,9-10H2,(H,21,23)(H,22,24)
InChIKey 
QWGFUNDUGLPNFS-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
PF00132

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_00363.

PDB 15

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)