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Bifunctional mannoside-glucosinolate glycoconjugates as enzymatically triggered isothiocyanates and FimH ligands
- Source :
- Organic and Biomolecular Chemistry, Organic and Biomolecular Chemistry, Royal Society of Chemistry, 2018, 16 (26), pp.4900-4913. ⟨10.1039/C8OB01128A⟩, Organic & Biomolecular Chemistry, Organic & Biomolecular Chemistry, 2018, 16 (26), pp.4900-4913. ⟨10.1039/C8OB01128A⟩
- Publication Year :
- 2018
- Publisher :
- HAL CCSD, 2018.
-
Abstract
- International audience; Glucosinolates are sulfur-containing secondary metabolites found in plants of the Brassicale order. They are precursors of isothiocyanate species, resulting from C–S hydrolysis catalysed by the thioglucohydrolase myrosinase. We describe the synthesis of bifunctional glucosinolate–mannoside glycoconjugates combining both the structural features of a substrate of myrosinase and a ligand of the lectin FimH. We show that these glycoconjugates serve as enzyme substrates and that myrosinase can indeed hydrolyze the glucosinolate moiety with affinities (KM, Vmax) comparable to the natural substrates glucomoringin and sinigrin. This enzymatic hydrolysis of the thioglycosidic bond led to the efficient formation of an isothiocyanate which was assessed by the formation of the corresponding dithiocarbamate derivatives. Finally, we show that our synthetic bifunctional glycoconjugates also serve as FimH ligands where the glucosinolate moiety does not hamper the interaction with the lectin. Our findings set the stage for an original bioconjugation tool, allowing for myrosinase-triggered specific labelling of lectins using glucosinolate glycoconjugates as non-toxic, water soluble isothiocyanate precursors.
- Subjects :
- chemistry.chemical_classification
biology
010405 organic chemistry
Glycoconjugate
Myrosinase
Stereochemistry
Organic Chemistry
Lectin
010402 general chemistry
01 natural sciences
Biochemistry
0104 chemical sciences
chemistry.chemical_compound
chemistry
Sinigrin
Glucosinolate
Isothiocyanate
biology.protein
Moiety
[CHIM]Chemical Sciences
Physical and Theoretical Chemistry
Bifunctional
Subjects
Details
- Language :
- English
- ISSN :
- 14770520 and 14770539
- Database :
- OpenAIRE
- Journal :
- Organic and Biomolecular Chemistry, Organic and Biomolecular Chemistry, Royal Society of Chemistry, 2018, 16 (26), pp.4900-4913. ⟨10.1039/C8OB01128A⟩, Organic & Biomolecular Chemistry, Organic & Biomolecular Chemistry, 2018, 16 (26), pp.4900-4913. ⟨10.1039/C8OB01128A⟩
- Accession number :
- edsair.doi.dedup.....88607421b3f49a119d9b2a5148575e97