Ligand profile

IUM

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

Bound to: KP13_32218 — Transcription termination factor rho

Via homolog PDB 3l0o UniProt P38527 Formula O₂U²⁺
Mol. weight 270.03 Da
Permeability Check
PAINS Clean

Identifiers

Database identifiers and provenance.

Ligand ID
IUM
PDB
3l0o
UniProt (similar protein)
P38527
Target protein
KP13_32218

Structure

2D representation rendered from SMILES.

Physicochemical properties

Computed with RDKit from SMILES.

Molecular weight 270.03 Da
LogP (Crippen) -2.38
H-bond donors 0
H-bond acceptors 2
TPSA 46.12 Ų
Rotatable bonds 0
Aromatic rings 0 / 0
Heavy atoms 3
Fraction sp³ C 0.00
Formula O₂U²⁺

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 46.1
  • −1 ≤ LogP ≤ 5 -2.38
Lipinski's Rule of Five Pass 0 violations
  • MW ≤ 500 Da 270.0
  • LogP ≤ 5 -2.38
  • H-bond donors ≤ 5 0
  • H-bond acceptors ≤ 10 2
Veber's rules Pass
  • Rotatable bonds ≤ 10 0
  • TPSA ≤ 140 Ų 46.1
PAINS Clean

No PAINS structural alerts detected.

Chemical representations

Canonical representations for cheminformatics workflows.

SMILES 
[O-][U+4][O-]
InChI 
InChI=1S/2O.U/q2*-1;+4
InChIKey 
SUPITXAKBSTVAN-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
PF00006' 'PF07498

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_32218.

PDB 10

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)