Ligand profile

PIY

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

Bound to: HT085_RS00130 — amino-acid N-acetyltransferase

Via homolog PDB 7nlr UniProt P9WQ01 Formula C₉H₈N₂
Mol. weight 144.18 Da
Permeability High
PAINS Clean

Identifiers

Database identifiers and provenance.

Ligand ID
PIY
PDB
7nlr
UniProt (similar protein)
P9WQ01
Target protein
HT085_RS00130

Structure

2D representation rendered from SMILES.

Physicochemical properties

Computed with RDKit from SMILES.

Molecular weight 144.18 Da
LogP (Crippen) 2.08
H-bond donors 1
H-bond acceptors 1
TPSA 28.68 Ų
Rotatable bonds 1
Aromatic rings 2 / 2
Heavy atoms 11
Fraction sp³ C 0.00
Formula C₉H₈N₂

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 28.7
  • −1 ≤ LogP ≤ 5 2.08
Lipinski's Rule of Five Pass 0 violations
  • MW ≤ 500 Da 144.2
  • LogP ≤ 5 2.08
  • H-bond donors ≤ 5 1
  • H-bond acceptors ≤ 10 1
Veber's rules Pass
  • Rotatable bonds ≤ 10 1
  • TPSA ≤ 140 Ų 28.7
PAINS Clean

No PAINS structural alerts detected.

Chemical representations

Canonical representations for cheminformatics workflows.

SMILES 
c1ccc(cc1)c2[nH]ccn2
InChI 
InChI=1S/C9H8N2/c1-2-4-8(5-3-1)9-10-6-7-11-9/h1-7H,(H,10,11)
InChIKey 
ZCUJYXPAKHMBAZ-UHFFFAOYSA-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
PF00696

External resources

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

Other ligands for this protein

Quick navigation to other ligands bound to HT085_RS00130.

PDB 19

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

Ligand PDB entry

ZINC 50

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

Compound Similarity (Tanimoto)