O-fucosylation (O-Fuc) is an important glycosylation modification in which fucose is covalently attached to a serine or threonine residue's hydroxyl group (O-linkage). Protein O-fucosyltransferases (POFUTs) are essential enzymes that catalyze the synthesis of protein O-Fuc. CD BioGlyco provides glyco-engineered cell construction services based on the two distinct O-Fuc pathways (POFUT1 and POFUT2 directed). The two O-Fuc pathways serve epidermal growth factor-like (EGF) repeat sequences (e.g. Notch) or thrombospondin EGF type 1 repeat sequences (TSRs, e.g. thrombospondin 1). Our staff has extensive experience in Glycan Display and Cell-based Glycan Display Array.
We offer two modification services including modification of EGF repeat sequences and modification of TSRs in cells to construct O-Fuc pathway-based glyco-engineering cells. After modification of the site, the glycans are specifically extended. In addition, we specifically recognize and modulate EGF repeats or TSRs by enzymatic modifications (POFUT1, the Fringe enzymes, TSR O-fucosyltransferase, and focus-specific 1,3-glycosyltransferase).
Fig.1 Schematic diagram of O-Fuc pathway-based glyco-engineered cell construction service. (CD BioGlyco)
Paper title: Engineering of a mammalian O-glycosylation pathway in the yeast Saccharomyces cerevisiae: production of O-fucosylated epidermal growth factor domains
Technology: Matrix-assisted laser desorption/ionization-time of flight mass spectrometry (MALDI-TOF MS), Sodium dodecyl sulfate-polyacrylamide gel electrophoresis (SDS-PAGE)
Journal: Glycobiology
Published: 2008
IF: 4.3
Results: In this study, an epidermal growth factor structural domain of the O-Fuc type was produced in Saccharomyces cerevisiae by intervening in the O-glycosylation pathway. We constructed the in vivo O-Fuc system with the help of genetically engineered genes recoding the structural domains of protein O-focused transferase 1 (O-FucT-1) and EGF. The results showed that O-FucT-1 recognizes the EGF structural domain containing only the C2-C4 and C5-C6 double bonds. In addition, the expression of EGF structural domain mutants suggests that the three disulfide bonds play different roles in the O-Fuc pathway.
Fig.2 Results analysis data of EGF domain. (Chigira, et al., 2008)
CD BioGlyco helps clients reveal the genetic, biosynthetic, and structural correlations of glycan binding in their natural environments. Our operations team helps clients avoid some common problems. Please feel free to contact us for more information.
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