Protein: Dolichyl-diphosphooligosaccharide--protein glycosyltransferase subunit wbp1 (Oligosaccharyl transferase 48 kDa subunit) (Oligosaccharyl transferase subunit beta) (O59866)
Organism: Schizosaccharomyces pombe (strain 972 / ATCC 24843) (Fission yeast)
Function: Subunit of the oligosaccharyl transferase (OST) complex that catalyzes the initial transfer of a defined glycan (Glc(3)Man(9)GlcNAc(2) in eukaryotes) from the lipid carrier dolichol-pyrophosphate to an asparagine residue within an Asn-X-Ser/Thr consensus motif in nascent polypeptide chains, the first step in protein N-glycosylation. N-glycosylation occurs cotranslationally and the complex associates with the Sec61 complex at the channel-forming translocon complex that mediates protein translocation across the endoplasmic reticulum (ER). All subunits are required for a maximal enzyme activity.
Subcellular location: Endoplasmic reticulum {ECO:0000269|PubMed:16823372}. Membrane {ECO:0000250|UniProtKB:P33767}; Single-pass type I membrane protein {ECO:0000250|UniProtKB:P33767}.
Sequence: MKSALCIALALTWSLLVQAARQTVLAVADHDIGGYSTFLQSLTDRDFDVKTSYIKDESAKLFEYGERLYDNLILLSSQSKSLGPVFSPKSLLEFVQSGGNLFVVAGSQLPEGIRELGRQLDMFLAERQSVVVDHFNHAEGSDDIILLDGISENPYIISDETRAAGPILYKGIGHYLGPNPQTQPILRGNPTSYIYNTKTEAEVSKNPWAAGTQLFLVSVLQSSTGERVGLSGSIDMLKDEYLSPQSPSFSKSNFLFARDLTNWVFQRKGVLQATNMTYGKVAEPLESRNASCYRIKDEMIFSIDISLLEDGQQTPYVADDVQLELIMLDPYYRVNLVPVPSDSQTSQHYEAVLVAPDHYGDFTFKIEYKRPGLTPIEEKSTFTLRQFFHNEFPRFLPHAYPYYASCFSVLGAFLLFCGIWLLQKPAKPVVPSAKKQN
InterPro domains: - IPR055459: OST48, middle domain (domain) [287-423]
- IPR029062: Class I glutamine amidotransferase-like (homologous_superfamily) [13-138]
- IPR055457: OST48, N-terminal domain (domain) [24-264]
- IPR005013: Dolichyl-diphosphooligosaccharide--protein glycosyltransferase 48kDa subunit (family) [6-424]
Interaction partners: - Dolichyl-diphosphooligosaccharide--protein glycosyltransferase subunit 3
- Dolichyl-diphosphooligosaccharide--protein glycosyltransferase subunit 1
- Uncharacterized protein C553.06
- Probable dolichyl-diphosphooligosaccharide--protein glycosyltransferase subunit ost2
- Dolichyl-diphosphooligosaccharide--protein glycosyltransferase subunit stt3
- Probable protein transport protein Sec61 subunit gamma
- Probable mannosyl-oligosaccharide glucosidase
- Dol-P-Glc:Glc
- Protein transport protein sec61 subunit beta
- Protein transport protein sec61 subunit alpha
Gene Ontology annotations:
Molecular Function (MF): GO:0003674 (molecular function), GO:0098772 (molecular function regulator activity), GO:0030234 (enzyme regulator activity), GO:0140677 (molecular function activator activity), GO:0008047 (enzyme activator activity)
Biological Process (BP): GO:0008150 (biological process), GO:0008152 (metabolic process), GO:0009987 (cellular process), GO:0009058 (biosynthetic process), GO:0044238 (primary metabolic process), GO:0044237 (cellular metabolic process), GO:0071704 (organic substance metabolic process), GO:0006807 (nitrogen compound metabolic process), GO:0070085 (glycosylation), GO:0044249 (cellular biosynthetic process), GO:1901564 (organonitrogen compound metabolic process), GO:1901576 (organic substance biosynthetic process), GO:0044260 (cellular macromolecule metabolic process), GO:0043170 (macromolecule metabolic process), GO:0043413 (macromolecule glycosylation), GO:1901135 (carbohydrate derivative metabolic process), GO:0019538 (protein metabolic process), GO:0036211 (protein modification process), GO:1901566 (organonitrogen compound biosynthetic process), GO:0009059 (macromolecule biosynthetic process), GO:0006486 (protein glycosylation), GO:0043412 (macromolecule modification), GO:0034645 (cellular macromolecule biosynthetic process), GO:1901137 (carbohydrate derivative biosynthetic process), GO:0009100 (glycoprotein metabolic process), GO:0006487 (protein N-linked glycosylation), GO:0009101 (glycoprotein biosynthetic process)
Cellular Component (CC): GO:0005575 (cellular component), GO:0110165 (cellular anatomical entity), GO:0005622 (intracellular anatomical structure), GO:0043226 (organelle), GO:0005737 (cytoplasm), GO:0012505 (endomembrane system), GO:0043229 (intracellular organelle), GO:0005783 (endoplasmic reticulum), GO:0043227 (membrane-bounded organelle), GO:0043231 (intracellular membrane-bounded organelle)