ID:RPN1_HUMAN DESCRIPTION: RecName: Full=Dolichyl-diphosphooligosaccharide--protein glycosyltransferase subunit 1; EC=2.4.1.119; AltName: Full=Dolichyl-diphosphooligosaccharide--protein glycosyltransferase 67 kDa subunit; AltName: Full=Ribophorin I; Short=RPN-I; AltName: Full=Ribophorin-1; Flags: Precursor; FUNCTION: Essential subunit of N-oligosaccharyl transferase enzyme which catalyzes the transfer of a high mannose oligosaccharide from a lipid-linked oligosaccharide donor to an asparagine residue within an Asn-X-Ser/Thr consensus motif in nascent polypeptide chains. CATALYTIC ACTIVITY: Dolichyl diphosphooligosaccharide + protein L- asparagine = dolichyl diphosphate + a glycoprotein with the oligosaccharide chain attached by N-glycosyl linkage to protein L- asparagine. SUBUNIT: Component of the oligosaccharyltransferase (OST) complex. OST seems to exist in different forms which contain at least RPN1, RPN2, OST48, DAD1, OSTC, KRTCAP2 and either STT3A or STT3B. OST can form stable complexes with the Sec61 complex or with both the Sec61 and TRAP complexes. SUBCELLULAR LOCATION: Endoplasmic reticulum membrane; Single-pass type I membrane protein. Melanosome. Note=Identified by mass spectrometry in melanosome fractions from stage I to stage IV. TISSUE SPECIFICITY: Expressed in all tissues tested. SIMILARITY: Belongs to the OST1 family.
The RNAfold program from the Vienna RNA Package is used to perform the secondary structure predictions and folding calculations. The estimated folding energy is in kcal/mol. The more negative the energy, the more secondary structure the RNA is likely to have.
ModBase Predicted Comparative 3D Structure on P04843
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Orthologous Genes in Other Species
Orthologies between human, mouse, and rat are computed by taking the best BLASTP hit, and filtering out non-syntenic hits. For more distant species reciprocal-best BLASTP hits are used. Note that the absence of an ortholog in the table below may reflect incomplete annotations in the other species rather than a true absence of the orthologous gene.
Biological Process: GO:0006464 cellular protein modification process GO:0006486 protein glycosylation GO:0018279 protein N-linked glycosylation via asparagine
Protein P04843 (Reactome details) participates in the following event(s):
R-HSA-1799326 Signal-containing nascent peptide translocates to endoplasmic reticulum R-HSA-1799329 Signal peptidase hydrolyzes signal peptide from ribosome-associated nascent protein R-HSA-446209 Transfer of N-glycan to the protein R-HSA-1799339 SRP-dependent cotranslational protein targeting to membrane R-HSA-72766 Translation R-HSA-446203 Asparagine N-linked glycosylation R-HSA-392499 Metabolism of proteins R-HSA-597592 Post-translational protein modification
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Sequence and Links to Tools and Databases 
Common Gene Haplotype Alleles 
