STT3B

Dolichyl-diphosphooligosaccharide—protein glycosyltransferase subunit STT3B is an enzyme that in humans is encoded by the STT3B gene.[5][6][7]

STT3B
Identifiers
Aliases	STT3B, CDG1X, SIMP, STT3-B, catalytic subunit of the oligosaccharyltransferase complex, STT3 oligosaccharyltransferase complex catalytic subunit B
External IDs	OMIM: 608605 MGI: 1915542 HomoloGene: 7387 GeneCards: STT3B
Gene location (Human) Chr. Chromosome 3 (human)[1] Band 3p23 Start 31,532,638 bp[1] End 31,637,616 bp[1]
Gene location (Mouse) Chr. Chromosome 9 (mouse)[2] Band 9|9 F3 Start 115,242,581 bp[2] End 115,310,421 bp[2]
Gene ontology Molecular function • transferase activity • oligosaccharyl transferase activity • dolichyl-diphosphooligosaccharide-protein glycotransferase activity • transferase activity, transferring glycosyl groups • metal ion binding • GO:0001948 protein binding Cellular component • integral component of membrane • oligosaccharyltransferase complex • endoplasmic reticulum • membrane • endoplasmic reticulum membrane • macromolecular complex • oligosaccharyltransferase I complex Biological process • post-translational modification • protein glycosylation • co-translational protein modification • response to unfolded protein • protein N-linked glycosylation via asparagine • ubiquitin-dependent ERAD pathway • glycoprotein catabolic process Sources:Amigo / QuickGO
Orthologs
Species	Human	Mouse
Entrez	201595	68292
Ensembl	ENSG00000163527	ENSMUSG00000032437
UniProt	Q8TCJ2	Q3TDQ1
RefSeq (mRNA)	NM_178862	NM_024222
RefSeq (protein)	NP_849193	NP_077184
Location (UCSC)	Chr 3: 31.53 – 31.64 Mb	Chr 9: 115.24 – 115.31 Mb
PubMed search	[3]	[4]
Wikidata
View/Edit Human View/Edit Mouse

Function

The STT3B protein contains a highly immunogenic minor histocompatibility antigen epitope of 9 amino acids, B6(dom1). Like ITM1 (MIM 601134), STT3B is homologous to yeast STT3, an oligosaccharyltransferase essential for cell proliferation.[8][7]

See also

• Oligosaccharyltransferase

References

1. GRCh38: Ensembl release 89: ENSG00000163527 - Ensembl, May 2017
2. GRCm38: Ensembl release 89: ENSMUSG00000032437 - Ensembl, May 2017
3. "Human PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.
4. "Mouse PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.
5. Kelleher DJ, Karaoglu D, Mandon EC, Gilmore R (July 2003). "Oligosaccharyltransferase isoforms that contain different catalytic STT3 subunits have distinct enzymatic properties". Molecular Cell. 12 (1): 101–11. doi:10.1016/S1097-2765(03)00243-0. PMID 12887896.
6. McBride K, Baron C, Picard S, Martin S, Boismenu D, Bell A, et al. (November 2002). "The model B6(dom1) minor histocompatibility antigen is encoded by a mouse homolog of the yeast STT3 gene". Immunogenetics. 54 (8): 562–9. doi:10.1007/s00251-002-0502-4. PMID 12439619.
7. "Entrez Gene: STT3B STT3, subunit of the oligosaccharyltransferase complex, homolog B (S. cerevisiae)".
8. McBride K, Baron C, Picard S, Martin S, Boismenu D, Bell A, et al. (November 2002). "The model B6(dom1) minor histocompatibility antigen is encoded by a mouse homolog of the yeast STT3 gene". Immunogenetics. Springer Science and Business Media LLC. 54 (8): 562–9. doi:10.1007/s00251-002-0502-4. PMID 12439619.

Further reading

• Olsen JV, Blagoev B, Gnad F, Macek B, Kumar C, Mortensen P, Mann M (November 2006). "Global, in vivo, and site-specific phosphorylation dynamics in signaling networks". Cell. 127 (3): 635–48. doi:10.1016/j.cell.2006.09.026. PMID 17081983.
• Otsuki T, Ota T, Nishikawa T, Hayashi K, Suzuki Y, Yamamoto J, et al. (2007). "Signal sequence and keyword trap in silico for selection of full-length human cDNAs encoding secretion or membrane proteins from oligo-capped cDNA libraries". DNA Research. 12 (2): 117–26. doi:10.1093/dnares/12.2.117. PMID 16303743.
• Shibatani T, David LL, McCormack AL, Frueh K, Skach WR (April 2005). "Proteomic analysis of mammalian oligosaccharyltransferase reveals multiple subcomplexes that contain Sec61, TRAP, and two potential new subunits". Biochemistry. 44 (16): 5982–92. doi:10.1021/bi047328f. PMID 15835887.