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Fluorinated carbohydrates as chemical probes formolecular recognition studies. Current statusand perspectives
(Royal Society of Chemistry, 2020-06-21)
This review provides an extensive summary of the effects of carbohydrate fluorination with regard to changes in physical, chemical and biological properties with respect to regular saccharides. The specific structural, ...
Unravelling the Time Scale of Conformational Plasticity and Allostery in Glycan Recognition by Human Galectin-1
(Wiley, 2020-12-01)
The interaction of human galectin-1 with a variety of oligosaccharides, from di-(N-acetyllactosamine) to tetra-saccharides (blood B type-II antigen) has been scrutinized by using a combined approach of different NMR ...
Mono and Di-Fucosylated Glycans of the Parasitic Worm S. Mansoniare Recognized Differently by the Innate Immune Receptor DC-SIGN
(Wiley, 2020-12-01)
The parasitic worm,Schistosoma mansoni, expresses unusual fucosylated glycans in a stage-dependent manner that can be recognized by the human innate immune receptor DC-SIGN, thereby shaping host immune responses. We have ...
The SARS-CoV-2 Spike Glycoprotein Directly Binds Exogeneous Sialic Acids: A NMR View
(Wiley, 2022-04-25)
[EN] The interaction of the SARS CoV2 spike glycoprotein with two sialic acid-containing trisaccharides (alpha 2,3 and alpha 2,6 sialyl N-acetyllactosamine) has been demonstrated by NMR. The NMR-based distinction between ...
Galectin-4 N-Terminal Domain: Binding Preferences Toward A and B Antigens with Different Peripheral Core Presentations
(Frontiers Media, 2021-04-21)
The tandem-repeat Galectin-4 (Gal-4) contains two different domains covalently linked through a short flexible peptide. Both domains have been shown to bind preferentially to A and B histo blood group antigens with different ...
Structural Characterization of N-Linked Glycans in the Receptor Binding Domain of the SARS-CoV-2 Spike Protein and their Interactions with Human Lectins
(Wiley, 2020-10)
The glycan structures of the receptor binding domain of the SARS-CoV2 spike glycoprotein expressed in human HEK293F cells have been studied by using NMR. The different possible interacting epitopes have been deeply analysed ...
Glycosyl Oxocarbenium Ions: Structure, Conformation, Reactivity, and Interactions
(American Chemical Society, 2021-06-01)
Conspectus
We also highlight that, from a chemical perspective, the glycosylation reaction can be described as a continuum, from unimolecular SN1 with naked oxocarbenium cations as intermediates to bimolecular SN2-type ...
Kinetic Studies of Acetyl Group Migration between the Saccharide Units in an Oligomannoside Trisaccharide Model Compound and a Native Galactoglucomannan Polysaccharide
(Wiley, 2021-10-13)
Acyl group migration is a fundamental phenomenon in carbohydrate chemistry, recently shown to take place also between two non-adjacent hydroxyl groups, across the glycosidic bond, in a beta-(1 -> 4)-linked mannan trisaccharide ...
Selective C-13-Labels on Repeating Glycan Oligomers to Reveal Protein Binding Epitopes through NMR: Polylactosamine Binding to Galectins
(Wiley, 2021-08-16)
A combined chemo-enzymatic synthesis/NMR-based methodology is presented to identify, in unambiguous manner, the distinctive binding epitope within repeating sugar oligomers when binding to protein receptors. The concept ...
Glycan structures and their interactions with proteins. A NMR view
(Elsevier, 2019-12)
Carbohydrate molecules are essential actors in key biological events, being involved as recognition points for cell-cell and cell-matrix interactions related to health and disease. Despite outstanding advances in cryoEM, ...