Ligand profile

ZINC4543519

Virtual-screening candidate from ZINC.

Bound to: KP13_05490 — Flavodoxin-like fold family protein

Via homolog UniProt C0STY1 Formula C₁₆H₁₃N₃O₃S
Tanimoto 0.78
Mol. weight 327.37 Da
Permeability Check
PAINS Alert

Identifiers

Database identifiers and provenance.

Ligand ID
ZINC4543519
UniProt (similar protein)
C0STY1
Tanimoto
0.784
Target protein
KP13_05490

Structure

2D representation rendered from SMILES.

Physicochemical properties

Computed with RDKit from SMILES.

Molecular weight 327.37 Da
LogP (Crippen) 3.61
H-bond donors 2
H-bond acceptors 5
TPSA 105.11 Ų
Rotatable bonds 3
Aromatic rings 3 / 3
Heavy atoms 23
Fraction sp³ C 0.00
Formula C₁₆H₁₃N₃O₃S

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 105.1
  • −1 ≤ LogP ≤ 5 3.61
Lipinski's Rule of Five Pass 0 violations
  • MW ≤ 500 Da 327.4
  • LogP ≤ 5 3.61
  • H-bond donors ≤ 5 2
  • H-bond acceptors ≤ 10 5
Veber's rules Pass
  • Rotatable bonds ≤ 10 3
  • TPSA ≤ 140 Ų 105.1
PAINS Alert

Matches PAINS filter: azo_A(324). May be a frequent false positive in HTS — review carefully.

Chemical representations

Canonical representations for cheminformatics workflows.

SMILES 
NS(=O)(=O)c1ccc(/N=N/c2ccc(O)c3ccccc23)cc1
InChI 
InChI=1S/C16H13N3O3S/c17-23(21,22)12-7-5-11(6-8-12)18-19-15-9-10-16(20)14-4-2-1-3-13(14)15/h1-10,20H,(H2,17,21,22)/b19-18+
InChIKey 
DHBWBPLCZRSOBL-VHEBQXMUSA-N

Provenance

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

Method
LigQ nearest_k
Query
ORI
Homolog
C0STY1

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_05490.

PDB 9

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

Ligand PDB entry

ZINC 49

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

Compound Similarity (Tanimoto)