Protein Domain : Dolichyl-diphosphooligosaccharide--protein glycosyltransferase 48kDa subunit IPR005013

Type  Family
Description  Members of this family are involved in asparagine-linked protein glycosylation. In particular, dolichyl-diphosphooligosaccharide-protein glycosyltransferase (DDOST), also known as oligosaccharyltransferase ( ), transfers the high-mannose sugar GlcNAc(2)-Man(9)-Glc(3) from a dolichol-linked donor to an asparagine acceptor in a consensus Asn-X-Ser/Thr motif. In most eukaryotes, the DDOST complex is composed of three subunits, which in humans are described as a 48kDa subunit, ribophorin I, and ribophorin II [ ]. However, the yeast DDOST appears to consist of six subunits (alpha, beta, gamma, delta, epsilon, zeta). The yeast beta subunit is a 45kDa polypeptide, previously discovered as the Wbp1 protein, with known sequence similarity to the human 48kDa subunit and the other orthologues. This family includes the 48kDa-like subunits from several eukaryotes; it also includes the yeast DDOST beta subunit Wbp1.Dolichyl-diphosphooligosaccharide--protein glycosyltransferase subunit Wbp1 is the beta subunit of the OST complex, one of the original six subunits purified [ ]. Wbp1 is essential [, ], but conditional mutants have decreased transferase activity [, ].
Short Name  DDOST_48_kDa_subunit

0 Child Features

1 Gene Families

114 Genes

2 Ontology Annotations

0 Parent Features

14 Publications

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