Ligand profile

TTF

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

Bound to: KP13_31481 — Fumarate reductase flavoprotein subunit

Via homolog PDB 1zp0 UniProt Q0QF01 Formula C₈H₅F₃O₂S
Mol. weight 222.19 Da
Permeability High
PAINS Clean

Identifiers

Database identifiers and provenance.

Ligand ID
TTF
PDB
1zp0
UniProt (similar protein)
Q0QF01
Target protein
KP13_31481

Structure

2D representation rendered from SMILES.

Physicochemical properties

Computed with RDKit from SMILES.

Molecular weight 222.19 Da
LogP (Crippen) 2.45
H-bond donors 0
H-bond acceptors 3
TPSA 34.14 Ų
Rotatable bonds 3
Aromatic rings 1 / 1
Heavy atoms 14
Fraction sp³ C 0.25
Formula C₈H₅F₃O₂S

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 34.1
  • −1 ≤ LogP ≤ 5 2.45
Lipinski's Rule of Five Pass 0 violations
  • MW ≤ 500 Da 222.2
  • LogP ≤ 5 2.45
  • H-bond donors ≤ 5 0
  • H-bond acceptors ≤ 10 3
Veber's rules Pass
  • Rotatable bonds ≤ 10 3
  • TPSA ≤ 140 Ų 34.1
PAINS Clean

No PAINS structural alerts detected.

Chemical representations

Canonical representations for cheminformatics workflows.

SMILES 
c1cc(sc1)C(=O)CC(=O)C(F)(F)F
InChI 
InChI=1S/C8H5F3O2S/c9-8(10,11)7(13)4-5(12)6-2-1-3-14-6/h1-3H,4H2
InChIKey 
TXBBUSUXYMIVOS-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
PF01127' 'PF13534

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_31481.

PDB 35

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)