======= 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 |}}