LM

Lukas Mach

4 records found

Most plant glycoproteins contain substantial amounts of paucimannosidic N-glycans instead of their direct biosynthetic precursors, complex N-glycans with terminal N-acetylglucosamine residues. We now demonstrate that two β-N-acetyl-hexosaminidases (HEXO1 and HEXO3) residing in di ...
A common argument against using plants as a production system for therapeutic proteins is their inability to perform authentic human N-glycosylation (i.e. the presence of β1,2-xylosylation and core α1,3-fucosylation). In this study, RNA interference (RNAi) technology was used to ...
Previous studies have reported that plants contain negligible amounts of free or protein-bound N-acetylneuraminic acid (Neu5Ac). This is a major disadvantage for the use of plants as a biopharmaceutical expression system, since N-glycans with terminal Neu5Ac residues are importan ...

Mass + retention time = structure

A strategy for the analysis of N-glycans by carbon LC-ESI-MS and its application to fibrin N-glycans

Analysis of the numerous possible, often isobaric structures of protein-bound oligosaccharides calls for a high-performance two-dimensional method that combines liquid chromatography's ability to separate isomers and mass spectrometry's ability to determine glycan composition. He ...