digitonin

Digitonin is a steroidal saponin (saraponin) obtained from the foxglove plant Digitalis purpurea. Its aglycone is digitogenin, a spirostan steroid. It has been investigated as a detergent, as it effectively water-solubilizes lipids. As such, it has several potential membrane-related applications in biochemistry, including solubilizing membrane proteins, precipitating cholesterol, and permeabilizing cell membranes.

Chemical data

Formula: C56H92O29
Molecular weight: 1229.3 g/mol
IUPAC name: (2S,3R,4S,5S,6R)-2-[(2S,3R,4S,5S,6R)-2-[(2S,3R,4S,5R,6R)-2-[(2R,3R,4R,5R,6R)-6-[(1R,2S,3S,4R,5'R,6R,7S,8R,9S,12S,13S,15R,16R,18S)-3,15-dihydroxy-5',7,9,13-tetramethylspiro[5-oxapentacyclo[10.8.0.02,9.04,8.013,18]icosane-6,2'-oxane]-16-yl]oxy-4,5-dihydroxy-2-(hydroxymethyl)oxan-3-yl]oxy-5-hydroxy-6-(hydroxymethyl)-4-[(2S,3R,4S,5R)-3,4,5-trihydroxyoxan-2-yl]oxyoxan-3-yl]oxy-3,5-dihydroxy-6-(hydroxymethyl)oxan-4-yl]oxy-6-(hydroxymethyl)oxane-3,4,5-triol
SMILES: C[C@@H]1CC[C@@]2([C@H]([C@H]3[C@@H](O2)[C@H]([C@@H]4[C@@]3(CC[C@H]5[C@H]4CC[C@@H]6[C@@]5(C[C@H]([C@@H](C6)O[C@H]7[C@@H]([C@H]([C@H]([C@H](O7)CO)O[C@H]8[C@@H]([C@H]([C@@H]([C@H](O8)CO)O)O[C@H]9[C@@H]([C@H]([C@@H](CO9)O)O)O)O[C@H]2[C@@H]([C@H]([C@H]([C@H](O2)CO)O)O[C@H]2[C@@H]([C@H]([C@@H]([C@H](O2)CO)O)O)O)O)O)O)O)C)C)O)C)OC1
InChIKey: UVYVLBIGDKGWPX-KUAJCENISA-N
XLogP: -3.9
Polar surface area: 455 Å²
H-bond donors: 17
H-bond acceptors: 29
Formal charge: 0

via PubChem

Drug data · ChEMBL

Molecule type: Small molecule

via ChEMBL · EBI

Research

4,708 papers

Digitonin does not flip across cholesterol-poor membranes.Journal of colloid and interface science · 2017
Digitonin concentration is determinant for mitochondrial supercomplexes analysis by BlueNative page.Biochimica et biophysica acta. Bioenergetics · 2021
Use of digitonin-permeabilized cells in studies of steroid receptor subnuclear trafficking.Methods (San Diego, Calif.) · 1999
Digitonin-permeabilized cells are exocytosis competent.Journal of neurochemistry · 1987
On the Interaction between Digitonin and Cholesterol in Langmuir Monolayers.Langmuir : the ACS journal of surfaces and colloids · 2016

via PubMed

Wikidata facts

Mass: 1228.572426924

Show 5 more facts

chemical formula: C₅₆H₉₂O₂₉
canonical SMILES: OCC1OC(OC2C(O)C(OC(CO)C2O)OC3C(OC(CO)C(O)C3OC4OCC(O)C(O)C4O)OC5C(O)C(O)C(OC6CC7CCC8C(CCC9(C)C8C(O)C%10OC%11(OCC(C)CC%11)C(C)C%109)C7(C)CC6O)OC5CO)C(O)C(O)C1O
Commons category: Digitonin
isomeric SMILES: C[C@H]1[C@H]2[C@@H](O[C@]13CC[C@@H](C)CO3)[C@@H](O)[C@H]1[C@@H]3CC[C@H]4C[C@@H](O[C@@H]5O[C@H](CO)[C@H](O[C@@H]6O[C@H](CO)[C@@H](O)[C@H](O[C@@H]7OC[C@@H](O)[C@H](O)[C@H]7O)[C@H]6O[C@@H]6O[C@H](CO)[C@H](O)[C@H](O[C@@H]7O[C@H](CO)[C@@H](O)[C@H](O)[C@H]7O)[C@H]6O)[C@H](O)[C@H]5O)[C@H](O)C[C@]4(C)[C@H]3CC[C@@]12C
found in taxon: Digitalis ciliata

Sources (3)

via Wikidata · CC0

~1 min read