Ligand profile

CHEMBL891

Bioactivity hit from ChEMBL on a similar protein.

Bound to: KP13_32244 — multidrug efflux protein EmrE

Via homolog UniProt Q3S5C3 Formula C₁₉H₁₈ClN₃O₅S
pchembl 8.40 ~4.0 nM
Mol. weight 435.89 Da
Permeability Check
PAINS Clean

Identifiers

Database identifiers and provenance.

Ligand ID
CHEMBL891
UniProt (similar protein)
Q3S5C3
pchembl
8.400 (~4.0 nM)
Target protein
KP13_32244

Structure

2D representation rendered from SMILES.

Physicochemical properties

Computed with RDKit from SMILES.

Molecular weight 435.89 Da
LogP (Crippen) 2.55
H-bond donors 2
H-bond acceptors 6
TPSA 112.74 Ų
Rotatable bonds 4
Aromatic rings 2 / 4
Heavy atoms 29
Fraction sp³ C 0.37
Formula C₁₉H₁₈ClN₃O₅S

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 112.7
  • −1 ≤ LogP ≤ 5 2.55
Lipinski's Rule of Five Pass 0 violations
  • MW ≤ 500 Da 435.9
  • LogP ≤ 5 2.55
  • H-bond donors ≤ 5 2
  • H-bond acceptors ≤ 10 6
Veber's rules Pass
  • Rotatable bonds ≤ 10 4
  • TPSA ≤ 140 Ų 112.7
PAINS Clean

No PAINS structural alerts detected.

Chemical representations

Canonical representations for cheminformatics workflows.

SMILES 
Cc1onc(-c2ccccc2Cl)c1C(=O)N[C@@H]1C(=O)N2[C@@H]1SC(C)(C)[C@@H]2C(=O)O
InChI 
InChI=1S/C19H18ClN3O5S/c1-8-11(12(22-28-8)9-6-4-5-7-10(9)20)15(24)21-13-16(25)23-14(18(26)27)19(2,3)29-17(13)23/h4-7,13-14,17H,1-3H3,(H,21,24)(H,26,27)/t13-,14+,17-/m1/s1
InChIKey 
LQOLIRLGBULYKD-JKIFEVAISA-N

Provenance

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

Method
LigQ nearest_k
Source
ChEMBL
Binding sites
PF00893

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_32244.

ChEMBL 3

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)