======= UBE3B =======
== Gene Information ==
* **Official Symbol**: UBE3B
* **Official Name**: ubiquitin protein ligase E3B
* **Aliases and Previous Symbols**: N/A
* **Entrez ID**: [[https://www.ncbi.nlm.nih.gov/gene/?term=89910|89910]]
* **UniProt**: [[https://www.uniprot.org/uniprot/Q7Z3V4|Q7Z3V4]]
* **Interactions**: [[https://thebiogrid.org/search.php?search=UBE3B&organism=9606|BioGRID]]
* **PubMed articles**: [[https://www.ncbi.nlm.nih.gov/pubmed/?term=gene%20UBE3B|Open PubMed]]
* **OMIM**: [[https://omim.org/entry/608047|Open OMIM]]
== Function Summary ==
* **Entrez Summary**: The modification of proteins with ubiquitin is an important cellular mechanism for targeting abnormal or short-lived proteins for degradation. Ubiquitination involves at least three classes of enzymes: E1 ubiquitin-activating enzymes, E2 ubiquitin-conjugating enzymes, and E3 ubiquitin-protein ligases. This gene encodes a member of the E3 ubiquitin-conjugating enzyme family which accepts ubiquitin from an E2 ubiquitin-conjugating enzyme and transfers the ubiquitin to the targeted substrates. A HECT (homology to E6-AP C-terminus) domain in the C-terminus of the longer isoform of this protein is the catalytic site of ubiquitin transfer and forms a complex with E2 conjugases. Shorter isoforms of this protein which lack the C-terminal HECT domain are therefore unlikely to bind E2 enzymes. Alternatively spliced transcript variants encoding distinct isoforms have been identified for this gene. [provided by RefSeq, Jul 2012].
* **UniProt Summary**: E3 ubiquitin-protein ligase which accepts ubiquitin from an E2 ubiquitin-conjugating enzyme in the form of a thioester and then directly transfers the ubiquitin to targeted substrates. {ECO:0000250}.
|HECT|
|ubiquitin conjugating enzyme activity|
|protein polyubiquitination|
|ubiquitin-dependent protein catabolic process|
|modification-dependent protein catabolic process|
|modification-dependent macromolecule catabolic process|
|proteolysis involved in cellular protein catabolic process|
|cellular protein catabolic process|
|protein catabolic process|
|protein ubiquitination|
|protein modification by small protein conjugation|
|cellular macromolecule catabolic process|
|protein modification by small protein conjugation or removal|
|macromolecule catabolic process|
|organonitrogen compound catabolic process|
|proteolysis|
|organic substance catabolic process|
|cellular catabolic process|
\\
=== CRISPR Data ===
^Screen^Score^
|[[:results:exp463|Caffeine 2600μM R08 exp463]]|-1.77|
|[[:results:exp422|Wiskostatin 3μM R07 exp422]]|1.91|
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**: 10482
* **Expression level (log2 read counts)**: 5.59
{{:chemogenomics:nalm6 dist.png?nolink |}}