Ligand profile

2NO

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

Bound to: KP13_03893 — Succinate-semialdehyde dehydrogenase [NADP+]

Via homolog PDB 4fqf UniProt P05091 Formula NO₂
Mol. weight 46.01 Da
Permeability High
PAINS Clean

Identifiers

Database identifiers and provenance.

Ligand ID
2NO
PDB
4fqf
UniProt (similar protein)
P05091
Target protein
KP13_03893

Structure

2D representation rendered from SMILES.

Physicochemical properties

Computed with RDKit from SMILES.

Molecular weight 46.01 Da
LogP (Crippen) 0.10
H-bond donors 0
H-bond acceptors 2
TPSA 49.33 Ų
Rotatable bonds 0
Aromatic rings 0 / 0
Heavy atoms 3
Fraction sp³ C 0.00
Formula NO₂

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 49.3
  • −1 ≤ LogP ≤ 5 0.10
Lipinski's Rule of Five Pass 0 violations
  • MW ≤ 500 Da 46.0
  • LogP ≤ 5 0.10
  • H-bond donors ≤ 5 0
  • H-bond acceptors ≤ 10 2
Veber's rules Pass
  • Rotatable bonds ≤ 10 0
  • TPSA ≤ 140 Ų 49.3
PAINS Clean

No PAINS structural alerts detected.

Chemical representations

Canonical representations for cheminformatics workflows.

SMILES 
N(=O)[O]
InChI 
InChI=1S/NO2/c2-1-3
InChIKey 
JCXJVPUVTGWSNB-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
PF00171

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_03893.

PDB 14

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

Ligand PDB entry

ChEMBL 100

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)