======= LACTB =======
== Gene Information ==
* **Official Symbol**: LACTB
* **Official Name**: lactamase beta
* **Aliases and Previous Symbols**: N/A
* **Entrez ID**: [[https://www.ncbi.nlm.nih.gov/gene/?term=114294|114294]]
* **UniProt**: [[https://www.uniprot.org/uniprot/P83111|P83111]]
* **Interactions**: [[https://thebiogrid.org/search.php?search=LACTB&organism=9606|BioGRID]]
* **PubMed articles**: [[https://www.ncbi.nlm.nih.gov/pubmed/?term=gene%20LACTB|Open PubMed]]
* **OMIM**: [[https://omim.org/entry/608440|Open OMIM]]
== Function Summary ==
* **Entrez Summary**: This gene encodes a mitochondrially-localized protein that has sequence similarity to prokaryotic beta-lactamases. Many of the residues responsible for beta-lactamase activity are not conserved in this protein, suggesting it may have a different enzymatic function. Increased expression of the related mouse gene was found to be associated with obesity. Alternative splicing results in multiple transcript variants encoding different protein isoforms. [provided by RefSeq, Dec 2013].
* **UniProt Summary**: Mitochondrial serine protease that acts as a regulator of mitochondrial lipid metabolism (PubMed:28329758). Acts by decreasing protein levels of PISD, a mitochondrial enzyme that converts phosphatidylserine (PtdSer) to phosphatidylethanolamine (PtdEtn), thereby affecting mitochondrial lipid metabolism (PubMed:28329758). It is unclear whether it acts directly by mediating proteolysis of PISD or by mediating proteolysis of another lipid metabolism protein (PubMed:28329758). Acts as a tumor suppressor that has the ability to inhibit proliferation of multiple types of breast cancer cells: probably by promoting decreased levels of PISD, thereby affecting mitochondrial lipid metabolism (PubMed:28329758). {ECO:0000269|PubMed:28329758}.
|Beta-lactamase|
|peptidase activity|
|regulation of lipid metabolic process|
|identical protein binding|
|lipid metabolic process|
|mitochondrion|
|proteolysis|
\\
=== CRISPR Data ===
^Screen^Score^
|[[:results:exp529|Thimerosal 0.85μM R08 exp529]]|1.88|
|[[:results:exp465|Cannabidiol 13μM R08 exp465]]|1.89|
|[[:results:exp519|RS-1 10μM R08 exp519]]|2.08|
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**: 9949
* **Expression level (log2 read counts)**: 3.56
{{:chemogenomics:nalm6 dist.png?nolink |}}