======= TUSC3 ======= == Gene Information == * **Official Symbol**: TUSC3 * **Official Name**: tumor suppressor candidate 3 * **Aliases and Previous Symbols**: N/A * **Entrez ID**: [[https://www.ncbi.nlm.nih.gov/gene/?term=7991|7991]] * **UniProt**: [[https://www.uniprot.org/uniprot/Q13454|Q13454]] * **Interactions**: [[https://thebiogrid.org/search.php?search=TUSC3&organism=9606|BioGRID]] * **PubMed articles**: [[https://www.ncbi.nlm.nih.gov/pubmed/?term=gene%20TUSC3|Open PubMed]] * **OMIM**: [[https://omim.org/entry/601385|Open OMIM]] == Function Summary == * **Entrez Summary**: This gene encodes a protein that has been associated with several biological functions including cellular magnesium uptake, protein glycosylation and embryonic development. This protein localizes to the endoplasmic reticulum and acts as a component of the oligosaccharyl transferase complex which is responsible for N-linked protein glycosylation. This gene is a candidate tumor suppressor gene. Homozygous mutations in this gene are associated with autosomal recessive nonsyndromic mental retardation-7 and in the proliferation and invasiveness of several cancers including metastatic pancreatic cancer, ovarian cancer and glioblastoma multiform. [provided by RefSeq, Oct 2017]. * **UniProt Summary**: Acts as accessory component 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. Involved in N-glycosylation of STT3B-dependent substrates. Specifically required for the glycosylation of a subset of acceptor sites that are near cysteine residues; in this function seems to act redundantly with MAGT1. In its oxidized form proposed to form transient mixed disulfides with a glycoprotein substrate to facilitate access of STT3B to the unmodified acceptor site. Has also oxidoreductase-independent functions in the STT3B-containing OST complex possibly involving substrate recognition. {ECO:0000269|PubMed:25135935, ECO:0000305|PubMed:12887896, ECO:0000305|PubMed:24685145}. |OST3 OST6| |dolichyl-diphosphooligosaccharide-protein glycotransferase activity| |oligosaccharyltransferase complex| |magnesium ion transmembrane transporter activity| |magnesium ion transmembrane transport| |magnesium ion transport| |protein N-linked glycosylation via asparagine| |peptidyl-asparagine modification| |protein N-linked glycosylation| |macromolecule glycosylation| |protein glycosylation| |glycosylation| |divalent metal ion transport| |cognition| |divalent inorganic cation transport| |glycoprotein biosynthetic process| |glycoprotein metabolic process| |inorganic cation transmembrane transport| |cation transmembrane transport| |carbohydrate derivative biosynthetic process| |metal ion transport| |inorganic ion transmembrane transport| |cation transport| |peptidyl-amino acid modification| |endoplasmic reticulum membrane| |ion transmembrane transport| |carbohydrate derivative metabolic process| |mitochondrion| |transmembrane transport| |ion transport| |nervous system process| |integral component of plasma membrane| |organonitrogen compound biosynthetic process| |cellular macromolecule biosynthetic process| |macromolecule biosynthetic process| |system process| \\ === CRISPR Data === ^Screen^Score^ |[[:results:exp135|MS023 7μM R03 exp135]]|-1.7| No correlation found to any other genes in chemogenomics. Global Fraction of Cell Lines Where Essential: 0/739 ^Tissue^Fraction Of Cell Lines Where Essential^ |1290807.0|0/1| |909776.0|0/1| |bile duct|0/28| |blood|0/28| |bone|0/26| |breast|0/33| |central nervous system|0/56| |cervix|0/4| |colorectal|0/17| |esophagus|0/13| |fibroblast|0/1| |gastric|0/16| |kidney|0/21| |liver|0/20| |lung|0/75| |lymphocyte|0/16| |ovary|0/26| |pancreas|0/24| |peripheral nervous system|0/16| |plasma cell|0/15| |prostate|0/1| |skin|0/24| |soft tissue|0/9| |thyroid|0/2| |upper aerodigestive|0/22| |urinary tract|0/29| |uterus|0/5| == Essentiality in NALM6 == * **Essentiality Rank**: 18774 * **Expression level (log2 read counts)**: -1.72 {{:chemogenomics:nalm6 dist.png?nolink |}}