======= PPP4R2 =======
== Gene Information ==
* **Official Symbol**: PPP4R2
* **Official Name**: protein phosphatase 4 regulatory subunit 2
* **Aliases and Previous Symbols**: N/A
* **Entrez ID**: [[https://www.ncbi.nlm.nih.gov/gene/?term=151987|151987]]
* **UniProt**: [[https://www.uniprot.org/uniprot/Q9NY27|Q9NY27]]
* **Interactions**: [[https://thebiogrid.org/search.php?search=PPP4R2&organism=9606|BioGRID]]
* **PubMed articles**: [[https://www.ncbi.nlm.nih.gov/pubmed/?term=gene%20PPP4R2|Open PubMed]]
* **OMIM**: [[https://omim.org/entry/613822|Open OMIM]]
== Function Summary ==
* **Entrez Summary**: N/A
* **UniProt Summary**: Regulatory subunit of serine/threonine-protein phosphatase 4 (PP4). May regulate the activity of PPP4C at centrosomal microtubule organizing centers. Its interaction with the SMN complex leads to enhance the temporal localization of snRNPs, suggesting a role of PPP4C in maturation of spliceosomal snRNPs. The PPP4C-PPP4R2-PPP4R3A PP4 complex specifically dephosphorylates H2AFX phosphorylated on 'Ser-140' (gamma-H2AFX) generated during DNA replication and required for DNA double strand break repair. Mediates RPA2 dephosphorylation by recruiting PPP4C to RPA2 in a DNA damage-dependent manner. RPA2 dephosphorylation is required for the efficient RPA2-mediated recruitment of RAD51 to chromatin following double strand breaks, an essential step for DNA repair. {ECO:0000269|PubMed:10769191, ECO:0000269|PubMed:12668731, ECO:0000269|PubMed:18614045, ECO:0000269|PubMed:20154705}.
|PPP4R2|
|protein phosphatase 4 complex|
|protein phosphatase regulator activity|
|regulation of double-strand break repair via homologous recombination|
|regulation of double-strand break repair|
|protein binding, bridging|
|regulation of DNA recombination|
|regulation of phosphoprotein phosphatase activity|
|regulation of DNA repair|
|regulation of protein dephosphorylation|
|regulation of phosphatase activity|
|regulation of dephosphorylation|
|protein dephosphorylation|
|regulation of response to DNA damage stimulus|
|dephosphorylation|
|regulation of DNA metabolic process|
|RNA splicing|
|mRNA processing|
|centrosome|
|mRNA metabolic process|
|regulation of cellular response to stress|
|RNA processing|
|regulation of hydrolase activity|
|regulation of response to stress|
|RNA metabolic process|
|regulation of phosphate metabolic process|
|regulation of phosphorus metabolic process|
|regulation of protein modification process|
|gene expression|
\\
=== CRISPR Data ===
^Screen^Score^
|[[:results:exp429|Rapamycin 0.001μM R08 exp429]]|-1.95|
|[[:results:exp45|Docetaxel 0.002μM R01 exp45]]|-1.94|
|[[:results:exp332|Adefovir 20μM R07 exp332]]|-1.94|
|[[:results:exp29|Rapamycin 1μM R00 exp29]]|-1.82|
|[[:results:exp153|SGC2096 2.6μM R03 exp153]]|1.72|
No correlation found to any other genes in chemogenomics.
Global Fraction of Cell Lines Where Essential: 55/726
^Tissue^Fraction Of Cell Lines Where Essential^
|1290807.0|0/1|
|909776.0|0/1|
|bile duct|2/28|
|blood|2/28|
|bone|5/25|
|breast|3/33|
|central nervous system|7/56|
|cervix|0/4|
|colorectal|1/17|
|esophagus|0/13|
|fibroblast|0/1|
|gastric|1/15|
|kidney|3/21|
|liver|2/20|
|lung|3/75|
|lymphocyte|0/14|
|ovary|3/26|
|pancreas|4/24|
|peripheral nervous system|0/16|
|plasma cell|1/15|
|prostate|0/1|
|skin|2/24|
|soft tissue|0/7|
|thyroid|0/2|
|upper aerodigestive|1/22|
|urinary tract|1/29|
|uterus|0/5|
== Essentiality in NALM6 ==
* **Essentiality Rank**: 2931
* **Expression level (log2 read counts)**: 7.02
{{:chemogenomics:nalm6 dist.png?nolink |}}