Ligand profile

ZINC4181108

Virtual-screening candidate from ZINC.

Bound to: VK055_4646 — aminopeptidase B

Via homolog UniProt Q8IL11 Formula C₁₈H₁₉ClN₂O₃S
Tanimoto 1.00
Mol. weight 378.88 Da
Permeability Check
PAINS Alert

Identifiers

Database identifiers and provenance.

Ligand ID
ZINC4181108
UniProt (similar protein)
Q8IL11
Tanimoto
1.000
Target protein
VK055_4646

Structure

2D representation rendered from SMILES.

Physicochemical properties

Computed with RDKit from SMILES.

Molecular weight 378.88 Da
LogP (Crippen) 3.92
H-bond donors 2
H-bond acceptors 4
TPSA 90.19 Ų
Rotatable bonds 3
Aromatic rings 1 / 3
Heavy atoms 25
Fraction sp³ C 0.50
Formula C₁₈H₁₉ClN₂O₃S

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 90.2
  • −1 ≤ LogP ≤ 5 3.92
Lipinski's Rule of Five Pass 0 violations
  • MW ≤ 500 Da 378.9
  • LogP ≤ 5 3.92
  • H-bond donors ≤ 5 2
  • H-bond acceptors ≤ 10 4
Veber's rules Pass
  • Rotatable bonds ≤ 10 3
  • TPSA ≤ 140 Ų 90.2
PAINS Alert

Matches PAINS filter: thiophene_amino_C(7). May be a frequent false positive in HTS — review carefully.

Chemical representations

Canonical representations for cheminformatics workflows.

SMILES 
C[C@@H]1CCc2sc(NC(=O)[C@H]3CC(Cl)=CC[C@@H]3C(=O)O)c(C#N)c2C1
InChI 
InChI=1S/C18H19ClN2O3S/c1-9-2-5-15-12(6-9)14(8-20)17(25-15)21-16(22)13-7-10(19)3-4-11(13)18(23)24/h3,9,11,13H,2,4-7H2,1H3,(H,21,22)(H,23,24)/t9-,11+,13+/m1/s1
InChIKey 
ALGGPDBMSJBQIC-CDMKHQONSA-N

Provenance

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

Method
LigQ nearest_k
Query
CHEMBL1558568
Homolog
Q8IL11

External resources

Open this ligand in third-party databases and cheminformatics tools.

Other ligands for this protein

Quick navigation to other ligands bound to VK055_4646.

PDB 10

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 49

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

Compound Similarity (Tanimoto)