Identification |
HMDB Protein ID
| CDBP02095 |
Secondary Accession Numbers
| Not Available |
Name
| Dolichyl-diphosphooligosaccharide--protein glycosyltransferase subunit STT3A |
Description
| Not Available |
Synonyms
|
- B5
- Integral membrane protein 1
- Oligosaccharyl transferase subunit STT3A
- STT3-A
- Transmembrane protein TMC
|
Gene Name
| STT3A |
Protein Type
| Enzyme |
Biological Properties |
General Function
| Involved in oligosaccharyl transferase activity |
Specific Function
| Catalytic subunit of the N-oligosaccharyl transferase (OST) complex 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. 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). SST3A seems to be involved in complex substrate specificity. STT3A is present in the majority of OST complexes and mediates cotranslational N-glycosylation of most sites on target proteins, while STT3B-containing complexes are required for efficient cotranslational glycosylation and mediate glycosylation of sites that have been skipped by STT3A.
|
GO Classification
|
Biological Process |
co-translational protein modification |
post-translational protein modification |
protein N-linked glycosylation via asparagine |
Cellular Component |
oligosaccharyltransferase complex |
integral to membrane |
Component |
membrane |
cell part |
Function |
catalytic activity |
transferase activity |
transferase activity, transferring hexosyl groups |
transferase activity, transferring glycosyl groups |
oligosaccharyl transferase activity |
Molecular Function |
dolichyl-diphosphooligosaccharide-protein glycotransferase activity |
Process |
metabolic process |
macromolecule metabolic process |
macromolecule modification |
protein modification process |
protein amino acid glycosylation |
|
Cellular Location
|
- Endoplasmic reticulum membrane
- Multi-pass membrane protein
|
Pathways
|
Name | SMPDB/Pathwhiz | KEGG | protein glycosylation | Not Available | Not Available | N-Glycan biosynthesis | Not Available | | Protein processing in endoplasmic reticulum | Not Available | |
|
Gene Properties |
Chromosome Location
| 11 |
Locus
| 11q23.3 |
SNPs
| STT3A |
Gene Sequence
|
>2118 bp
ATGACTAAGTTTGGATTTTTGCGATTGTCCTATGAGAAGCAGGACACACTTTTGAAGCTT
CTCATTCTGTCAATGGCTGCTGTATTATCCTTCTCCACTCGTCTGTTTGCTGTCCTGAGA
TTTGAAAGTGTTATCCATGAGTTTGATCCGTACTTTAATTATCGGACTACCAGGTTCCTG
GCTGAGGAGGGGTTTTATAAATTCCATAACTGGTTTGATGACCGAGCCTGGTACCCTTTG
GGACGAATCATTGGAGGAACAATTTACCCAGGTTTAATGATCACCTCTGCTGCAATCTAC
CATGTACTCCATTTTTTCCACATCACCATCGACATTCGGAATGTCTGTGTGTTCCTGGCC
CCTCTCTTCTCCTCCTTCACCACCATCGTCACGTACCACCTTACCAAAGAGCTCAAGGAT
GCAGGGGCTGGGCTTCTTGCTGCTGCCATGATTGCTGTAGTTCCTGGATATATCTCCCGA
TCTGTGGCTGGCTCCTATGATAATGAAGGGATTGCCATCTTTTGCATGCTACTCACCTAC
TACATGTGGATCAAGGCAGTAAAGACTGGTTCCATCTGTTGGGCAGCTAAGTGTGCCCTT
GCTTATTTCTACATGGTCTCGTCATGGGGAGGTTATGTGTTCCTGATCAACTTAATTCCT
CTCCACGTCCTCGTGCTGATGCTCACAGGCCGTTTCTCTCACCGGATCTATGTGGCCTAC
TGTACTGTTTACTGCCTGGGCACTATACTTTCTATGCAGATCTCCTTTGTGGGTTTCCAG
CCTGTCCTTTCATCAGAGCACATGGCAGCCTTTGGGGTCTTTGGTCTCTGCCAGATCCAT
GCCTTTGTGGATTACCTGCGCAGCAAGTTGAATCCACAACAATTTGAAGTTCTTTTCCGG
AGCGTCATCTCTCTGGTAGGCTTTGTCCTTCTCACCGTGGGAGCTCTCCTCATGCTGACA
GGAAAAATATCTCCCTGGACGGGGCGTTTCTACTCACTGCTGGATCCCTCTTATGCTAAG
AACAACATCCCCATCATTGCTTCTGTGTCTGAGCATCAGCCCACAACCTGGTCCTCATAC
TATTTTGACCTGCAGCTCCTCGTCTTCATGTTTCCAGTTGGCCTCTATTACTGCTTTAGC
AACCTGTCTGATGCCCGGATTTTTATCATCATGTATGGTGTGACCAGCATGTACTTTTCA
GCTGTAATGGTGCGTCTAATGCTAGTGTTGGCACCTGTTATGTGCATTCTCTCTGGCATT
GGAGTCTCCCAGGTGCTGTCCACATACATGAAGAATCTGGACATAAGTCGTCCAGACAAG
AAGAGCAAGAAGCAACAGGATTCCACCTACCCTATTAAGAATGAAGTGGCAAGTGGGATG
ATACTGGTCATGGCTTTCTTTCTCATCACCTACACCTTTCATTCAACCTGGGTGACCAGT
GAGGCCTACTCTTCTCCGTCCATTGTACTATCTGCCCGTGGTGGGGATGGCAGTAGGATC
ATATTTGATGACTTCCGAGAAGCATATTATTGGCTTCGTCATAATACTCCAGAGGATGCG
AAGGTCATGTCCTGGTGGGATTATGGCTATCAGATTACAGCTATGGCAAACCGAACAATT
TTAGTGGACAATAACACATGGAATAATACCCATATTTCTCGAGTAGGGCAGGCAATGGCG
TCCACAGAGGAAAAAGCCTATGAGATCATGAGGGAGCTCGATGTCAGCTATGTGCTGGTC
ATTTTTGGAGGCCTCACTGGGTATTCCTCTGATGATATCAACAAGTTTCTTTGGATGGTC
CGGATTGGAGGGAGCACAGATACAGGCAAACATATCAAGGAGAATGACTATTATACTCCA
ACTGGGGAGTTCCGTGTGGACCGTGAAGGTTCTCCAGTGCTGCTCAACTGCCTCATGTAC
AAGATGTGTTACTATCGCTTTGGACAGGTTTACACAGAAGCCAAGCGTCCTCCAGGCTTT
GACCGTGTCCGAAATGCTGAGATTGGGAATAAAGACTTTGAGCTTGATGTCCTGGAGGAA
GCATATACCACAGAACATTGGCTGGTCAGGATATACAAGGTAAAGGACCTGGATAATCGA
GGCTTGTCAAGGACATAA
|
Protein Properties |
Number of Residues
| 705 |
Molecular Weight
| 80528.83 |
Theoretical pI
| 8.076 |
Pfam Domain Function
|
|
Signals
|
Not Available
|
Transmembrane Regions
|
Not Available
|
Protein Sequence
|
>Dolichyl-diphosphooligosaccharide--protein glycosyltransferase subunit STT3A
MTKFGFLRLSYEKQDTLLKLLILSMAAVLSFSTRLFAVLRFESVIHEFDPYFNYRTTRFL
AEEGFYKFHNWFDDRAWYPLGRIIGGTIYPGLMITSAAIYHVLHFFHITIDIRNVCVFLA
PLFSSFTTIVTYHLTKELKDAGAGLLAAAMIAVVPGYISRSVAGSYDNEGIAIFCMLLTY
YMWIKAVKTGSICWAAKCALAYFYMVSSWGGYVFLINLIPLHVLVLMLTGRFSHRIYVAY
CTVYCLGTILSMQISFVGFQPVLSSEHMAAFGVFGLCQIHAFVDYLRSKLNPQQFEVLFR
SVISLVGFVLLTVGALLMLTGKISPWTGRFYSLLDPSYAKNNIPIIASVSEHQPTTWSSY
YFDLQLLVFMFPVGLYYCFSNLSDARIFIIMYGVTSMYFSAVMVRLMLVLAPVMCILSGI
GVSQVLSTYMKNLDISRPDKKSKKQQDSTYPIKNEVASGMILVMAFFLITYTFHSTWVTS
EAYSSPSIVLSARGGDGSRIIFDDFREAYYWLRHNTPEDAKVMSWWDYGYQITAMANRTI
LVDNNTWNNTHISRVGQAMASTEEKAYEIMRELDVSYVLVIFGGLTGYSSDDINKFLWMV
RIGGSTDTGKHIKENDYYTPTGEFRVDREGSPVLLNCLMYKMCYYRFGQVYTEAKRPPGF
DRVRNAEIGNKDFELDVLEEAYTTEHWLVRIYKVKDLDNRGLSRT
|
External Links |
GenBank ID Protein
| 158261103 |
UniProtKB/Swiss-Prot ID
| P46977 |
UniProtKB/Swiss-Prot Entry Name
| STT3A_HUMAN |
PDB IDs
|
Not Available |
GenBank Gene ID
| AK290040 |
GeneCard ID
| STT3A |
GenAtlas ID
| STT3A |
HGNC ID
| HGNC:6172 |
References |
General References
| Not Available |