Ligand profile

TNL

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

Bound to: KP13_05150 — N-ethylmaleimide reductase

Via homolog PDB 1gvr UniProt P71278 Formula C₇H₅N₃O₆
Mol. weight 227.13 Da
Permeability Check
PAINS Clean

Identifiers

Database identifiers and provenance.

Ligand ID
TNL
PDB
1gvr
UniProt (similar protein)
P71278
Target protein
KP13_05150

Structure

2D representation rendered from SMILES.

Physicochemical properties

Computed with RDKit from SMILES.

Molecular weight 227.13 Da
LogP (Crippen) 1.72
H-bond donors 0
H-bond acceptors 6
TPSA 129.42 Ų
Rotatable bonds 3
Aromatic rings 1 / 1
Heavy atoms 16
Fraction sp³ C 0.14
Formula C₇H₅N₃O₆

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 129.4
  • −1 ≤ LogP ≤ 5 1.72
Lipinski's Rule of Five Pass 0 violations
  • MW ≤ 500 Da 227.1
  • LogP ≤ 5 1.72
  • H-bond donors ≤ 5 0
  • H-bond acceptors ≤ 10 6
Veber's rules Pass
  • Rotatable bonds ≤ 10 3
  • TPSA ≤ 140 Ų 129.4
PAINS Clean

No PAINS structural alerts detected.

Chemical representations

Canonical representations for cheminformatics workflows.

SMILES 
Cc1c(cc(cc1[N+](=O)[O-])[N+](=O)[O-])[N+](=O)[O-]
InChI 
InChI=1S/C7H5N3O6/c1-4-6(9(13)14)2-5(8(11)12)3-7(4)10(15)16/h2-3H,1H3
InChIKey 
SPSSULHKWOKEEL-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
PF00724

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_05150.

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)