Ligand profile

1PS

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

Bound to: KP13_32240 — putative HTH transcriptional regulator

Via homolog PDB 6g1b UniProt Q8NP91 Formula C₈H₁₁NO₃S
Mol. weight 201.25 Da
Permeability High
PAINS Clean

Identifiers

Database identifiers and provenance.

Ligand ID
1PS
PDB
6g1b
UniProt (similar protein)
Q8NP91
Target protein
KP13_32240

Structure

2D representation rendered from SMILES.

Physicochemical properties

Computed with RDKit from SMILES.

Molecular weight 201.25 Da
LogP (Crippen) -0.09
H-bond donors 0
H-bond acceptors 3
TPSA 61.08 Ų
Rotatable bonds 4
Aromatic rings 1 / 1
Heavy atoms 13
Fraction sp³ C 0.38
Formula C₈H₁₁NO₃S

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 61.1
  • −1 ≤ LogP ≤ 5 -0.09
Lipinski's Rule of Five Pass 0 violations
  • MW ≤ 500 Da 201.2
  • LogP ≤ 5 -0.09
  • H-bond donors ≤ 5 0
  • H-bond acceptors ≤ 10 3
Veber's rules Pass
  • Rotatable bonds ≤ 10 4
  • TPSA ≤ 140 Ų 61.1
PAINS Clean

No PAINS structural alerts detected.

Chemical representations

Canonical representations for cheminformatics workflows.

SMILES 
c1cc[n+](cc1)CCCS(=O)(=O)[O-]
InChI 
InChI=1S/C8H11NO3S/c10-13(11,12)8-4-7-9-5-2-1-3-6-9/h1-3,5-6H,4,7-8H2
InChIKey 
REEBJQTUIJTGAL-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
PF03466

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_32240.

PDB 8

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)