Ligand profile

TTX

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

Bound to: KP13_00025 — ATP synthase subunit beta

Via homolog PDB 1kmh UniProt P00825 Formula C₂₂H₃₀N₄O₄
Mol. weight 414.51 Da
Permeability Check
PAINS Clean

Identifiers

Database identifiers and provenance.

Ligand ID
TTX
PDB
1kmh
UniProt (similar protein)
P00825
Target protein
KP13_00025

Structure

2D representation rendered from SMILES.

Physicochemical properties

Computed with RDKit from SMILES.

Molecular weight 414.51 Da
LogP (Crippen) 0.99
H-bond donors 2
H-bond acceptors 4
TPSA 98.82 Ų
Rotatable bonds 3
Aromatic rings 1 / 2
Heavy atoms 30
Fraction sp³ C 0.45
Formula C₂₂H₃₀N₄O₄

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 98.8
  • −1 ≤ LogP ≤ 5 0.99
Lipinski's Rule of Five Pass 0 violations
  • MW ≤ 500 Da 414.5
  • LogP ≤ 5 0.99
  • H-bond donors ≤ 5 2
  • H-bond acceptors ≤ 10 4
Veber's rules Pass
  • Rotatable bonds ≤ 10 3
  • TPSA ≤ 140 Ų 98.8
PAINS Clean

No PAINS structural alerts detected.

Chemical representations

Canonical representations for cheminformatics workflows.

SMILES 
C[C@H]1C(=O)N[C@H](C(=O)N(/C(=C\c2ccccc2)/C(=O)NCC(=O)N1C)C)CC(C)C
InChI 
InChI=1S/C22H30N4O4/c1-14(2)11-17-22(30)26(5)18(12-16-9-7-6-8-10-16)21(29)23-13-19(27)25(4)15(3)20(28)24-17/h6-10,12,14-15,17H,11,13H2,1-5H3,(H,23,29)(H,24,28)/b18-12-/t15-,17-/m0/s1
InChIKey 
SIIRBDOFKDACOK-LFXZBHHUSA-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' 'PF02874

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_00025.

PDB 11

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

Ligand PDB entry

ChEMBL 1

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)