======= 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 |}}