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- W4207011912 abstract "Abstract Tools to interrogate glycoconjugate-protein interactions in the context living cells are highly attractive for the identification of critically important functional binding partners of glycan-binding proteins. These interactions are challenging to interrogate due to low affinity and rapid dissociation rates of glycan-protein binding events. The use of photo-crosslinkers to capture glycan-protein interaction complexes has shown great promise for identifying binding partners involved in these interactions. Current methodologies use metabolic oligosaccharide engineering (MOE) to incorporate photo-crosslinking sugars. However, these MOE strategies are not amenable to all cell types and can result in low incorporation and cell-surface display of the photo-crosslinking probe, limiting their utility for studying many types of interactions. We describe here an exo-enzymatic strategy for selectively introducing photo-crosslinking probes into cell-surface glycoconjugates using the recombinant human sialyltransferase ST6GAL1 and a diazirine-linked CMP-Neu5Ac derivative. Probe introduction is highly efficient, amenable to different cell types and resulted in improved crosslinking when compared to MOE. This exo-enzymatic labeling approach can selectively introduce the photo-crosslinking sugar on to specific glycan epitopes and subclasses by harnessing the specificity of the sialyltransferase employed, underscoring its potential as a tool to interrogate and identify glycoconjugate ligands for diverse glycan-binding proteins." @default.
- W4207011912 created "2022-01-26" @default.
- W4207011912 creator A5009539116 @default.
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- W4207011912 date "2022-01-20" @default.
- W4207011912 modified "2023-09-25" @default.
- W4207011912 title "Exo-Enzymatic Cell-Surface Glycan Labeling for Capturing Glycan-Protein Interactions through Photo-Crosslinking" @default.
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- W4207011912 doi "https://doi.org/10.1101/2022.01.20.477088" @default.
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