FB2025_05 , released December 11, 2025
FB2025_05 , released December 11, 2025
CV Term Report
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General Information
Term oligosaccharyltransferase complex ID (Ontology) GO:0008250 (Gene Ontology)
Definition A protein complex that is found in the endoplasmic reticulum membrane of eukaryotes and transfers lipid-linked oligosaccharide precursor to asparagine residues on nascent proteins. The complex includes at least eight non-identical subunits. Different forms of the complex containing distinct subunits have been detected in mammals.[ PubMed:15835887 PubMed:31810196 PubMed:32316603 ]
Also Known As "oligosaccharyl transferase complex" ; "OST complex"
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Annotations
Records annotated with this term OR any of its CHILD TERMS
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Records annotated with this exact term (annotations to child terms are NOT included)
Data Class Field Records
Genes (FBgn)  GO_CELLULAR_COMPONENT       7
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 Full annotation statements 
Relevant FlyBase reports
 Gene Groups Genes
 oligosaccharyltransferase complex (all annotations which use CV term, excluding "NOT" statements)       3      7
     part_of | oligosaccharyltransferase complex       --       7
Spanning Tree (Parents/Children)
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endoplasmic reticulum
 |__endoplasmic reticulum protein-containing complex___________
membrane                                                       |
 |__membrane protein complex___________________________________|
organelle membrane                                             |
 |__endoplasmic reticulum membrane_____________________________|
protein-containing complex                                     |
 |__membrane protein complex___________________________________|
 |__endoplasmic reticulum protein-containing complex___________|
nuclear outer membrane-endoplasmic reticulum membrane network  |
 |__endoplasmic reticulum membrane_____________________________|
endoplasmic reticulum subcompartment                           |
 |__endoplasmic reticulum membrane_____________________________|
catalytic complex                                              |
 |__transferase complex________________________________________|
                                                               oligosaccharyltransferase complex  14 rec.
                                                                |__oligosaccharyltransferase complex A 9 rec.
                                                                |__oligosaccharyltransferase complex B 8 rec.
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Is a membrane protein complex
endoplasmic reticulum protein-containing complex
transferase complex
Part of endoplasmic reticulum membrane
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Synonyms
  • "oligosaccharyl transferase complex" EXACT
    "OST complex" EXACT
    "OSTCI" NARROW
    "OSTCII" NARROW
    "OSTCIII" NARROW
Secondary IDs
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