Concept
O-linked glycosylation
Related publications (67)
Post-translational glycosylation diminishes α-synuclein pathology formation
O-linked N-acetylglucosamine (O-GlcNAc) is an endogenous form of glycosylation that alters the structure of alpha-synuclein amyloid fibrils and attenuates their pathogenetic properties. The modified fibrils have a significantly reduced ability to seed the ...
Berlin2024Rescue of secretion of rare-disease-associated misfolded mutant glycoproteins in UGGT1 knock-out mammalian cells
Endoplasmic reticulum (ER) retention of misfolded glycoproteins is mediated by the ER-localized eukaryotic glycoprotein secretion checkpoint, UDP-glucose glycoprotein glucosyl-transferase (UGGT). The enzyme recognizes a misfolded glycoprotein and flags it ...
Hoboken2024Combining ion mobility spectrometry and cryogenic ion spectroscopy with enzymatic digestion/synthesis for the study of N-linked glycans
Glycans play an essential role in numerous physiological and pathological processes of living organisms. Despite their significant biological relevance, glycobiology remains one of the least explored fields of biochemistry. The intrinsic isomeric complexit ...
EPFL2023Direct observation of glycans bonded to proteins and lipids at the single-molecule level
Klaus Kern, Stephan Rauschenbach
Proteins and lipids decorated with glycans are found throughout biological entities, playing roles in biological functions and dysfunctions. Current analytical strategies for these glycan-decorated biomolecules, termed glycoconjugates, rely on ensemble-ave ...
Washington2023Multistage Ion Mobility Spectrometry Combined with Infrared Spectroscopy for Glycan Analysis
Thomas Rizzo, Ahmed Ben Faleh, Stephan Warnke, Priyanka Bansal
The structural complexity of glycans makes their characterization challenging, not only because of the presence of various isomeric forms of the precursor molecule but also because the fragments can themselves be isomeric. We have recently developed an IMS ...
AMER CHEMICAL SOC2023Glycan heterogeneity as a cause of the persistent fraction in HIV-1 neutralization
Philippe Colin, Aleksandar Antanasijevic
Neutralizing antibodies (NAbs) to multiple epitopes on the HIV-1-envelope glycoprotein (Env) have been isolated from infected persons. The potency of NAbs is measured more often than the size of the persistent fraction of infectivity at maximum neutralizat ...
San Francisco2023Advancing Glycan Analysis: Cryogenic Ion Spectroscopy for Database-Driven Identification
Glycans play a pivotal role in both physiological processes; however, the field of glycobiology remains relatively understudied within biochemistry. The intricate complexity of glycans, coupled with their abundance of isomeric forms, presents formidable ch ...
EPFL2023The neuraminidase activity of influenza A virus determines the strain-specific sensitivity to neutralization by respiratory mucus
Athanasios Nenes, Tamar Kohn, Kalliopi Violaki, Ghislain Gilles Jean-Michel Motos, Aline Laetitia Schaub, Shannon Christa David, Walter Hugentobler
Respiratory mucus lining the airway epithelium constitutes an important first line of defense against infection with influenza A virus (IAV). Previous studies suggested that the inhibitory potential of mucus relies not only on the presence of decoy recepto ...
2023Identification of N-glycan positional isomers by combining IMS and vibrational fingerprinting of structurally determinant CID fragments
Thomas Rizzo, Ahmed Ben Faleh, Stephan Warnke, Priyanka Bansal
While glycans are present on the surface of cells in all living organisms and play key roles in most biological processes, their isomeric complexity makes their structural characterization challenging. Of particular importance are positional isomers, for w ...
ROYAL SOC CHEMISTRY2022Identification of Mobility-Resolved N-Glycan Isomers
Thomas Rizzo, Robert Paul Pellegrinelli, Ahmed Ben Faleh, Stephan Warnke, Priyanka Bansal
ABSTRACT: Glycan analysis has evolved considerably during the last decade. The advent of high-resolution ion-mobility spectrometry has enabled the separation of isomers with only the slightest of structural differences. However, the ability to separate suc ...
AMER CHEMICAL SOC2022