The role of N-linked oligosaccharides in glycoprotein function.
N-linked glycoproteins include such biologically important molecules as cell-surface receptors, cell-adhesion molecules, immunoglobulins and other serum proteins, and tumor antigens. Investigating the role of carbohydrate in glycoprotein function has included the use of glycosylation inhibitors or site-directed mutagenesis of specific glycosylation sites to prevent the addition of carbohydrate, or glycosylation processing inhibitors or animal cell glycosylation mutants to alter carbohydrate structure. In some proteins, glycosylation plays an important role in recognition, while in others, it may stabilize and/or control the conformation of the protein. The cloning of genes in bacteria or lower eukaryotes--with the goal of producing biologically active proteins for biotechnological purposes--necessitates a better understanding of the role of specific carbohydrate structures.
Department of Biochemistry and Molecular Biology, University of Arkansas for Medical Sciences, Little Rock 77221.
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Elbein
D000595:Amino Acid Sequence; D000818:Animals; D002240:Carbohydrate Sequence; D002241:Carbohydrates / Q000502:physiology; D006023:Glycoproteins / Q000737:chemistry* / Q000502:physiology; D006031:Glycosylation / Q000187:drug effects; D008969:Molecular Sequence Data; D016297:Mutagenesis, Site-Directed; D009844:Oligosaccharides / Q000096:biosynthesis / Q000737:chemistry*; D015202:Protein Engineering
D002241:Carbohydrates; D006023:Glycoproteins; D009844:Oligosaccharides