Ligand profile

KYN

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

Bound to: KP13_04181 — Aspartate aminotransferase

Via homolog PDB 3pd6 UniProt P05202 Formula C₁₀H₁₂N₂O₃
Mol. weight 208.22 Da
Permeability Check
PAINS Clean

Identifiers

Database identifiers and provenance.

Ligand ID
KYN
PDB
3pd6
UniProt (similar protein)
P05202
Target protein
KP13_04181

Structure

2D representation rendered from SMILES.

Physicochemical properties

Computed with RDKit from SMILES.

Molecular weight 208.22 Da
LogP (Crippen) 0.25
H-bond donors 3
H-bond acceptors 4
TPSA 106.41 Ų
Rotatable bonds 4
Aromatic rings 1 / 1
Heavy atoms 15
Fraction sp³ C 0.20
Formula C₁₀H₁₂N₂O₃

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 106.4
  • −1 ≤ LogP ≤ 5 0.25
Lipinski's Rule of Five Pass 0 violations
  • MW ≤ 500 Da 208.2
  • LogP ≤ 5 0.25
  • H-bond donors ≤ 5 3
  • H-bond acceptors ≤ 10 4
Veber's rules Pass
  • Rotatable bonds ≤ 10 4
  • TPSA ≤ 140 Ų 106.4
PAINS Clean

No PAINS structural alerts detected.

Chemical representations

Canonical representations for cheminformatics workflows.

SMILES 
c1ccc(c(c1)C(=O)C[C@@H](C(=O)O)N)N
InChI 
InChI=1S/C10H12N2O3/c11-7-4-2-1-3-6(7)9(13)5-8(12)10(14)15/h1-4,8H,5,11-12H2,(H,14,15)/t8-/m0/s1
InChIKey 
YGPSJZOEDVAXAB-QMMMGPOBSA-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
PF00155

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_04181.

PDB 38

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

Ligand PDB entry

ChEMBL 1

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)