Ligand profile

ARH

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

Bound to: VK055_2684 — ribosyldihydronicotinamide dehydrogenase (quinone)

Via homolog PDB 1h69 UniProt P15559 Formula C₁₉H₁₈N₂O₃
Mol. weight 322.36 Da
Permeability High
PAINS Alert

Identifiers

Database identifiers and provenance.

Ligand ID
ARH
PDB
1h69
UniProt (similar protein)
P15559
Target protein
VK055_2684

Structure

2D representation rendered from SMILES.

Physicochemical properties

Computed with RDKit from SMILES.

Molecular weight 322.36 Da
LogP (Crippen) 2.15
H-bond donors 1
H-bond acceptors 5
TPSA 62.31 Ų
Rotatable bonds 3
Aromatic rings 2 / 4
Heavy atoms 24
Fraction sp³ C 0.26
Formula C₁₉H₁₈N₂O₃

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 62.3
  • −1 ≤ LogP ≤ 5 2.15
Lipinski's Rule of Five Pass 0 violations
  • MW ≤ 500 Da 322.4
  • LogP ≤ 5 2.15
  • H-bond donors ≤ 5 1
  • H-bond acceptors ≤ 10 5
Veber's rules Pass
  • Rotatable bonds ≤ 10 3
  • TPSA ≤ 140 Ų 62.3
PAINS Alert

Matches PAINS filter: quinone_A(370). May be a frequent false positive in HTS — review carefully.

Chemical representations

Canonical representations for cheminformatics workflows.

SMILES 
C[C@@H]1C[N@@]1C2=CC(=O)c3c(c(c(n3C)c4ccccc4)CO)C2=O
InChI 
InChI=1S/C19H18N2O3/c1-11-9-21(11)14-8-15(23)18-16(19(14)24)13(10-22)17(20(18)2)12-6-4-3-5-7-12/h3-8,11,22H,9-10H2,1-2H3/t11-,21?/m1/s1
InChIKey 
RQFCSAVLOHDQNB-ZIFPNCEFSA-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
PF02525

External resources

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

Other ligands for this protein

Quick navigation to other ligands bound to VK055_2684.

PDB 59

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)