PPP2R1A — Protein phosphatase 2 scaffold subunit Aalpha
PPP2R1A belongs to a gene co-expression module in 3 of 28 SCUBA cell types. Each module groups genes that rise and fall together in that cell type; the genes it shares a module with are its closest co-expression partners there.
PPP2R1A's module in each cell type
| Cell type | Module | Shares the module with | |
|---|---|---|---|
| Innate lymphoid cells | Cellular Metabolic Maintenance Metabolism | ADIPOR1, APH1A, ARF5, BCAP31, CLIC1, CSNK2B, CYB5R3, DHPS +13 more | View in SCUBA |
| Macrophages | Autophagy Vesicular Trafficking Vesicular traficking | ACTR2, AHCYL1, ALKBH5, BECN1, BICD2, CAP1, CAPRIN1, COLGALT1 +32 more | View in SCUBA |
| Smooth muscle cells | Microtubule biogenesis Cytoskeletal | ACOT7, FBXL22, ILF2, LIMS2, NUCB2, PGRMC1, PHGDH, TBCB +3 more | View in SCUBA |
About the gene
| Synonyms | PP2A-Aalpha, PP2AA, PR65A |
|---|---|
| Chromosome | 19: 52170936-52229518 |
| Predicted location | Intracellular |
| Essential gene | Yes |
| Protein class | Cancer-related genes, Disease related genes, Essential proteins, Human disease related genes, Plasma proteins, Predicted intracellular proteins |
| Biological process | Chromosome partition, Host-virus interaction |
Function
The PR65 subunit of protein phosphatase 2A serves as a scaffolding molecule to coordinate the assembly of the catalytic subunit and a variable regulatory B subunit. Upon interaction with GNA12 promotes dephosphorylation of microtubule associated protein TAU/MAPT. Required for proper chromosome segregation and for centromeric localization of SGO1 in mitosis. Together with RACK1 adapter, mediates dephosphorylation of AKT1 at 'Ser-473', preventing AKT1 activation and AKT-mTOR signaling pathway (By similarity). Dephosphorylation of AKT1 is essential for regulatory T-cells (Treg) homeostasis and stability (By similarity). Part of the striatin- interacting phosphatase and kinase (STRIPAK) complexes. STRIPAK complexes have critical roles in protein (de)phosphorylation and are regulators of multiple signaling pathways including Hippo, MAPK, nuclear receptor and cytoskeleton remodeling. Different types of STRIPAK complexes are involved in a variety of biological processes such as cell growth, differentiation, apoptosis, metabolism and immune regulation. Key mediator of a quality checkpoint during transcription elongation as part of the Integrator-PP2A (INTAC) complex. The INTAC complex drives premature transcription termination of transcripts that are unfavorably configured for transcriptional elongation: within the INTAC complex, acts as a scaffolding subunit for PPP2CA, which catalyzes dephosphorylation of the C-terminal domain (CTD) of Pol II subunit POLR2A/RPB1 and SUPT5H/SPT5, thereby preventing transcriptional elongation. Regulates the recruitment of the SKA complex to kinetochores.
Human Protein Atlas · Open Targets · UniProt
Gene annotation from the Human Protein Atlas and UniProt; see sources & licences.