Ligand profile

ZINC102920855

Virtual-screening candidate from ZINC.

Bound to: KP13_31612 — Peptide methionine sulfoxide reductase msrA

Via homolog UniProt P54149 Formula C₂₃H₁₆N₂O₅S
Tanimoto 0.78
Mol. weight 432.46 Da
Permeability Check
PAINS Alert

Identifiers

Database identifiers and provenance.

Ligand ID
ZINC102920855
UniProt (similar protein)
P54149
Tanimoto
0.776
Target protein
KP13_31612

Structure

2D representation rendered from SMILES.

Physicochemical properties

Computed with RDKit from SMILES.

Molecular weight 432.46 Da
LogP (Crippen) 3.76
H-bond donors 2
H-bond acceptors 5
TPSA 112.90 Ų
Rotatable bonds 5
Aromatic rings 3 / 4
Heavy atoms 31
Fraction sp³ C 0.00
Formula C₂₃H₁₆N₂O₅S

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 112.9
  • −1 ≤ LogP ≤ 5 3.76
Lipinski's Rule of Five Pass 0 violations
  • MW ≤ 500 Da 432.5
  • LogP ≤ 5 3.76
  • H-bond donors ≤ 5 2
  • H-bond acceptors ≤ 10 5
Veber's rules Pass
  • Rotatable bonds ≤ 10 5
  • TPSA ≤ 140 Ų 112.9
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 
O=C(O)c1cccc(NC2=C/C(=N/S(=O)(=O)c3ccccc3)c3ccccc3C2=O)c1
InChI 
InChI=1S/C23H16N2O5S/c26-22-19-12-5-4-11-18(19)20(25-31(29,30)17-9-2-1-3-10-17)14-21(22)24-16-8-6-7-15(13-16)23(27)28/h1-14,24H,(H,27,28)/b25-20-
InChIKey 
NYHRCQDHUKKCOK-QQTULTPQSA-N

Provenance

Annotation context from LigQ_2, the internal Target step that collects PDB, ChEMBL, and ZINC ligand evidence.

Method
LigQ nearest_k
Query
CHEMBL1998302
Homolog
P54149

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_31612.

PDB 6

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

Ligand PDB entry

ChEMBL 6

Compounds with measured inhibitory activity on this target (higher pchembl = more potent).

Compound Potency (pchembl)

ZINC 49

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

Compound Similarity (Tanimoto)