Title : Glycoprotein biosynthesis in the alg3 Saccharomyces cerevisiae mutant. II. Structure of novel Man6-10GlcNAc2 processing intermediates on secreted invertase.

Pub. Date : 1993 Jun 5

PMID : 8505334






4 Functional Relationships(s)
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1 To characterize alg3 glycan elongation in vivo, oligosaccharides on alg3,sec18 invertase synthesized and secreted at 26 degrees C were released with peptide-N4-N-acetyl-beta-glucosaminyl asparagine amidase and purified by Bio-Gel P-4 chromatography. Polysaccharides ALG3 alpha-1,3- mannosyltransferase Homo sapiens
2 To characterize alg3 glycan elongation in vivo, oligosaccharides on alg3,sec18 invertase synthesized and secreted at 26 degrees C were released with peptide-N4-N-acetyl-beta-glucosaminyl asparagine amidase and purified by Bio-Gel P-4 chromatography. Oligosaccharides ALG3 alpha-1,3- mannosyltransferase Homo sapiens
3 To characterize alg3 glycan elongation in vivo, oligosaccharides on alg3,sec18 invertase synthesized and secreted at 26 degrees C were released with peptide-N4-N-acetyl-beta-glucosaminyl asparagine amidase and purified by Bio-Gel P-4 chromatography. Oligosaccharides ALG3 alpha-1,3- mannosyltransferase Homo sapiens
4 Thus, the alpha 1,6-linked branch additions which form Man9GlcNAc2-PP-dolichol from Man5GlcNAc2-PP-dolichol appear to provide important structural information enabling efficient recognition by the endoplasmic reticulum-glucosyltransferases forming oligosaccharide-lipid as well as the glucosidases involved in early trimming reactions, but the alg3 mutant documents that they are unnecessary for normal yeast mannan elongation. Oligosaccharides ALG3 alpha-1,3- mannosyltransferase Homo sapiens