======= SACS =======
== Gene Information ==
* **Official Symbol**: SACS
* **Official Name**: sacsin molecular chaperone
* **Aliases and Previous Symbols**: N/A
* **Entrez ID**: [[https://www.ncbi.nlm.nih.gov/gene/?term=26278|26278]]
* **UniProt**: [[https://www.uniprot.org/uniprot/Q9NZJ4|Q9NZJ4]]
* **Interactions**: [[https://thebiogrid.org/search.php?search=SACS&organism=9606|BioGRID]]
* **PubMed articles**: [[https://www.ncbi.nlm.nih.gov/pubmed/?term=gene%20SACS|Open PubMed]]
* **OMIM**: [[https://omim.org/entry/604490|Open OMIM]]
== Function Summary ==
* **Entrez Summary**: This gene encodes the sacsin protein, which includes a UbL domain at the N-terminus, a DnaJ domain, and a HEPN domain at the C-terminus. The gene is highly expressed in the central nervous system, also found in skin, skeletal muscles and at low levels in the pancreas. This gene includes a very large exon spanning more than 12.8 kb. Mutations in this gene result in autosomal recessive spastic ataxia of Charlevoix-Saguenay (ARSACS), a neurodegenerative disorder characterized by early-onset cerebellar ataxia with spasticity and peripheral neuropathy. The authors of a publication on the effects of siRNA-mediated sacsin knockdown concluded that sacsin protects against mutant ataxin-1 and suggest that 'the large multi-domain sacsin protein is able to recruit Hsp70 chaperone action and has the potential to regulate the effects of other ataxia proteins' (Parfitt et al., PubMed: 19208651). A pseudogene associated with this gene is located on chromosome 11. Alternative splicing of this gene results in multiple transcript variants. [provided by RefSeq, May 2013].
* **UniProt Summary**: Co-chaperone which acts as a regulator of the Hsp70 chaperone machinery and may be involved in the processing of other ataxia-linked proteins. {ECO:0000269|PubMed:19208651}.
|ubiquitin|
|HEPN|
|cell body fiber|
|negative regulation of inclusion body assembly|
|regulation of inclusion body assembly|
|proteasome binding|
|Hsp70 protein binding|
|chaperone binding|
|protein folding|
|axon|
|dendrite|
|negative regulation of cellular component organization|
|regulation of cellular component biogenesis|
|mitochondrion|
\\
=== CRISPR Data ===
^Screen^Score^
|[[:results:exp208|Vinblastine 0.015μM R05 exp208]]|-2.16|
|[[:results:exp199|Etoposide 0.3μM R05 exp199]]|-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**: 15573
* **Expression level (log2 read counts)**: 8.67
{{:chemogenomics:nalm6 dist.png?nolink |}}