Ligand profile

L4V

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

Bound to: KP13_32123 — chaperone protein HtpG

Via homolog PDB 4ce3 UniProt P02829 Formula C₁₈H₂₂ClNO₄
Mol. weight 351.83 Da
Permeability High
PAINS Clean

Identifiers

Database identifiers and provenance.

Ligand ID
L4V
PDB
4ce3
UniProt (similar protein)
P02829
Target protein
KP13_32123

Structure

2D representation rendered from SMILES.

Physicochemical properties

Computed with RDKit from SMILES.

Molecular weight 351.83 Da
LogP (Crippen) 3.46
H-bond donors 2
H-bond acceptors 4
TPSA 77.84 Ų
Rotatable bonds 0
Aromatic rings 1 / 2
Heavy atoms 24
Fraction sp³ C 0.44
Formula C₁₈H₂₂ClNO₄

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 77.8
  • −1 ≤ LogP ≤ 5 3.46
Lipinski's Rule of Five Pass 0 violations
  • MW ≤ 500 Da 351.8
  • LogP ≤ 5 3.46
  • H-bond donors ≤ 5 2
  • H-bond acceptors ≤ 10 4
Veber's rules Pass
  • Rotatable bonds ≤ 10 0
  • TPSA ≤ 140 Ų 77.8
PAINS Clean

No PAINS structural alerts detected.

Chemical representations

Canonical representations for cheminformatics workflows.

SMILES 
CN1CCC/C=C\CCCC(=O)Cc2c(c(cc(c2Cl)O)O)C1=O
InChI 
InChI=1S/C18H22ClNO4/c1-20-9-7-5-3-2-4-6-8-12(21)10-13-16(18(20)24)14(22)11-15(23)17(13)19/h2-3,11,22-23H,4-10H2,1H3/b3-2-
InChIKey 
XARNDFBZFLICCU-IHWYPQMZSA-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
PF02518

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_32123.

PDB 27

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

Ligand PDB entry

ChEMBL 6

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)