Ligand profile

ZINC1556567

Virtual-screening candidate from ZINC.

Bound to: KP13_03284 — Endonuclease 8 bifunctional protein

Via homolog UniProt P42371 Formula C₆H₅N₅S₂
Tanimoto 0.51
Mol. weight 211.28 Da
Permeability High
PAINS Clean

Identifiers

Database identifiers and provenance.

Ligand ID
ZINC1556567
UniProt (similar protein)
P42371
Tanimoto
0.514
Target protein
KP13_03284

Structure

2D representation rendered from SMILES.

Physicochemical properties

Computed with RDKit from SMILES.

Molecular weight 211.28 Da
LogP (Crippen) 0.95
H-bond donors 3
H-bond acceptors 6
TPSA 80.48 Ų
Rotatable bonds 0
Aromatic rings 2 / 2
Heavy atoms 13
Fraction sp³ C 0.00
Formula C₆H₅N₅S₂

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 80.5
  • −1 ≤ LogP ≤ 5 0.95
Lipinski's Rule of Five Pass 0 violations
  • MW ≤ 500 Da 211.3
  • LogP ≤ 5 0.95
  • H-bond donors ≤ 5 3
  • H-bond acceptors ≤ 10 6
Veber's rules Pass
  • Rotatable bonds ≤ 10 0
  • TPSA ≤ 140 Ų 80.5
PAINS Clean

No PAINS structural alerts detected.

Chemical representations

Canonical representations for cheminformatics workflows.

SMILES 
Nc1ncnc2nc(S)[nH]c(=S)c12
InChI 
InChI=1S/C6H5N5S2/c7-3-2-4(9-1-8-3)10-6(13)11-5(2)12/h1H,(H4,7,8,9,10,11,12,13)
InChIKey 
LVLKIRPTPCEOSR-UHFFFAOYSA-N

Provenance

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

Method
LigQ nearest_k
Query
KB5
Homolog
P42371

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_03284.

PDB 7

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)