Ppp2r1a protein phosphatase 2, regulatory subunit A, alpha [Mus musculus (house mouse)] - Gene

Summary

Official Symbol: Ppp2r1aprovided by MGI
Official Full Name: protein phosphatase 2, regulatory subunit A, alphaprovided by MGI
Primary source: MGI:MGI:1926334
See related: Ensembl:ENSMUSG00000007564 AllianceGenome:MGI:1926334
Gene type: protein coding
RefSeq status: PROVISIONAL
Organism: Mus musculus
Lineage: Eukaryota; Metazoa; Chordata; Craniata; Vertebrata; Euteleostomi; Mammalia; Eutheria; Euarchontoglires; Glires; Rodentia; Myomorpha; Muroidea; Muridae; Murinae; Mus; Mus
Also known as: PP2A; PR65; PP2Aa; 6330556D22Rik
Summary: Enables protein serine/threonine phosphatase activity. Involved in T cell homeostasis and negative regulation of phosphatidylinositol 3-kinase/protein kinase B signal transduction. Acts upstream of or within several processes, including nuclear division; peptidyl-serine dephosphorylation; and positive regulation of extrinsic apoptotic signaling pathway in absence of ligand. Located in cytosol. Part of protein phosphatase type 2A complex. Is active in glutamatergic synapse. Is expressed in several structures, including branchial arch; central nervous system; genitourinary system; limb; and sensory organ. Human ortholog(s) of this gene implicated in autosomal dominant intellectual developmental disorder 36. Orthologous to human PPP2R1A (protein phosphatase 2 scaffold subunit Aalpha). [provided by Alliance of Genome Resources, Jul 2025]
Expression: Ubiquitous expression in whole brain E14.5 (RPKM 147.1), CNS E18 (RPKM 140.4) and 28 other tissues See more
Orthologs: human all
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Genomic context

Location:: 17 A3.2; 17 11.4 cM

Exon count:: 15

Annotation release	Status	Assembly	Chr	Location
RS_2024_02	current	GRCm39 (GCF_000001635.27)	17	NC_000083.7 (21165716..21186167)
108.20200622	previous assembly	GRCm38.p6 (GCF_000001635.26)	17	NC_000083.6 (20945454..20965905)

Chromosome 17 - NC_000083.7 Genomic Context describing neighboring genes

Genomic regions, transcripts, and products

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Go to reference sequence details

Genomic Sequence:

Go to nucleotide: Graphics FASTA GenBank

Bibliography

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GeneRIFs: Gene References Into Functions

What's a GeneRIF?

Chk1 Inhibition Ameliorates Alzheimer's Disease Pathogenesis and Cognitive Dysfunction Through CIP2A/PP2A Signaling.
Title: Chk1 Inhibition Ameliorates Alzheimer's Disease Pathogenesis and Cognitive Dysfunction Through CIP2A/PP2A Signaling.
Protein phosphatase 2A regulates cytotoxicity and drug resistance by dephosphorylating AHR and MDR1.
Title: Protein phosphatase 2A regulates cytotoxicity and drug resistance by dephosphorylating AHR and MDR1.
Protein phosphatase 2A inactivation induces microsatellite instability, neoantigen production and immune response.
Title: Protein phosphatase 2A inactivation induces microsatellite instability, neoantigen production and immune response.
Perturbation of Specific Signaling Pathways Is Involved in Initiation of Mouse Liver Fibrosis.
Title: Perturbation of Specific Signaling Pathways Is Involved in Initiation of Mouse Liver Fibrosis.
Prostaglandin A1 Decreases the Phosphorylation of Tau by Activating Protein Phosphatase 2A via a Michael Addition Mechanism at Cysteine 377.
Title: Prostaglandin A1 Decreases the Phosphorylation of Tau by Activating Protein Phosphatase 2A via a Michael Addition Mechanism at Cysteine 377.
PP2A in LepR+ mesenchymal stem cells contributes to embryonic and postnatal endochondral ossification through Runx2 dephosphorylation.
Title: PP2A in LepR+ mesenchymal stem cells contributes to embryonic and postnatal endochondral ossification through Runx2 dephosphorylation.
These findings support the notion that a regulatory cascade comprising PP2A-B56alpha, beta-catenin, and Cyp2e1 is involved in benzene-induced hematotoxicity, providing critical insight into the role of PP2A in responses to the environmental chemicals.
Title: Benzene-induced mouse hematotoxicity is regulated by a protein phosphatase 2A complex that stimulates transcription of cytochrome P4502E1.
oocyte-specific deletion of Ppp2r1a led to severe female subfertility without affecting follicle survival, growth, and ovulation.
Title: Scaffold subunit Aalpha of PP2A is essential for female meiosis and fertility in mice.
A Pak1-PP2A-ERM signaling axis mediates F-actin rearrangement and degranulation in mast cells.
Title: A Pak1-PP2A-ERM signaling axis mediates F-actin rearrangement and degranulation in mast cells.
PP2A (Protein Phosphatase 2A(Twins)) counteracts Plk4 autophosphorylation, thus stabilizing Plk4 and promoting centriole duplication
Title: The Protein Phosphatase 2A regulatory subunit Twins stabilizes Plk4 to induce centriole amplification.

Submit: New GeneRIF Correction See all GeneRIFs (44)

Variation

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Alleles

Alleles of this type are documented at Mouse Genome Informatics (MGI)

Endonuclease-mediated (3)
Targeted (5) 1 citation

Interactions

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Products	Interactant	Other Gene	Complex	Source	Pubs	Description

General gene information

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Markers

Ppp2r1a (e-PCR), detects polymorphism
- UniSTS:526874

Ppp2r1a (e-PCR), detects polymorphism
- UniSTS:526875

Ppp2r1b (e-PCR), detects polymorphism
- UniSTS:526876

D17Jcs128 (e-PCR), detects polymorphism
- UniSTS:474731

AI747698 (e-PCR)
- UniSTS:209278

BF390652 (e-PCR)
- UniSTS:249515

Gene Ontology Provided by MGI

Function	Evidence Code	Pubs
enables protein antigen binding	IEA Inferred from Electronic Annotation more info
enables protein antigen binding	ISO Inferred from Sequence Orthology more info
enables protein binding	IPI Inferred from Physical Interaction more info	PubMed
enables protein heterodimerization activity	IEA Inferred from Electronic Annotation more info
enables protein heterodimerization activity	ISO Inferred from Sequence Orthology more info
enables protein phosphatase regulator activity	IBA Inferred from Biological aspect of Ancestor more info
enables protein phosphatase regulator activity	IEA Inferred from Electronic Annotation more info
enables protein phosphatase regulator activity	ISO Inferred from Sequence Orthology more info
enables protein phosphatase regulator activity	ISS Inferred from Sequence or Structural Similarity more info
enables protein serine/threonine phosphatase activity	IDA Inferred from Direct Assay more info	PubMed

Process	Evidence Code	Pubs
involved_in RNA polymerase II transcription initiation surveillance	IEA Inferred from Electronic Annotation more info
involved_in RNA polymerase II transcription initiation surveillance	ISO Inferred from Sequence Orthology more info
involved_in T cell homeostasis	IMP Inferred from Mutant Phenotype more info	PubMed
involved_in chromosome segregation	IEA Inferred from Electronic Annotation more info
involved_in chromosome segregation	ISO Inferred from Sequence Orthology more info
involved_in chromosome segregation	ISS Inferred from Sequence or Structural Similarity more info
acts_upstream_of_or_within female meiotic nuclear division	IMP Inferred from Mutant Phenotype more info	PubMed
involved_in meiotic sister chromatid cohesion, centromeric	IBA Inferred from Biological aspect of Ancestor more info
acts_upstream_of_or_within meiotic sister chromatid cohesion, centromeric	IMP Inferred from Mutant Phenotype more info	PubMed
acts_upstream_of_or_within meiotic spindle elongation	IMP Inferred from Mutant Phenotype more info	PubMed
acts_upstream_of_or_within mitotic sister chromatid separation	IMP Inferred from Mutant Phenotype more info	PubMed
involved_in negative regulation of hippo signaling	IEA Inferred from Electronic Annotation more info
involved_in negative regulation of hippo signaling	ISO Inferred from Sequence Orthology more info
involved_in negative regulation of hippo signaling	ISS Inferred from Sequence or Structural Similarity more info
involved_in negative regulation of phosphatidylinositol 3-kinase/protein kinase B signal transduction	IMP Inferred from Mutant Phenotype more info	PubMed
acts_upstream_of_or_within positive regulation of extrinsic apoptotic signaling pathway in absence of ligand	IMP Inferred from Mutant Phenotype more info	PubMed
acts_upstream_of_or_within regulation of meiotic cell cycle process involved in oocyte maturation	IMP Inferred from Mutant Phenotype more info	PubMed
involved_in spindle assembly	IBA Inferred from Biological aspect of Ancestor more info
acts_upstream_of_or_within transcription by RNA polymerase II	IEA Inferred from Electronic Annotation more info
acts_upstream_of_or_within transcription by RNA polymerase II	ISO Inferred from Sequence Orthology more info
acts_upstream_of_or_within transcription elongation by RNA polymerase II	IEA Inferred from Electronic Annotation more info
acts_upstream_of_or_within transcription elongation by RNA polymerase II	ISO Inferred from Sequence Orthology more info

Component	Evidence Code	Pubs
part_of FAR/SIN/STRIPAK complex	IEA Inferred from Electronic Annotation more info
part_of FAR/SIN/STRIPAK complex	ISO Inferred from Sequence Orthology more info
part_of FAR/SIN/STRIPAK complex	ISS Inferred from Sequence or Structural Similarity more info
part_of INTAC complex	IEA Inferred from Electronic Annotation more info
part_of INTAC complex	ISO Inferred from Sequence Orthology more info
located_in cell projection	IEA Inferred from Electronic Annotation more info
is_active_in chromatin	IEA Inferred from Electronic Annotation more info
is_active_in chromatin	ISO Inferred from Sequence Orthology more info
is_active_in chromatin	ISS Inferred from Sequence or Structural Similarity more info
located_in chromosome	IEA Inferred from Electronic Annotation more info
located_in chromosome, centromeric region	IEA Inferred from Electronic Annotation more info
located_in chromosome, centromeric region	ISO Inferred from Sequence Orthology more info
located_in chromosome, centromeric region	ISS Inferred from Sequence or Structural Similarity more info
is_active_in cytoplasm	IBA Inferred from Biological aspect of Ancestor more info
located_in cytoplasm	IEA Inferred from Electronic Annotation more info
is_active_in cytosol	IBA Inferred from Biological aspect of Ancestor more info
located_in cytosol	IDA Inferred from Direct Assay more info	PubMed
located_in cytosol	TAS Traceable Author Statement more info
located_in dendrite	IEA Inferred from Electronic Annotation more info
is_active_in glutamatergic synapse	EXP Inferred from Experiment more info	PubMed
is_active_in glutamatergic synapse	IDA Inferred from Direct Assay more info	PubMed
located_in lateral plasma membrane	IEA Inferred from Electronic Annotation more info
located_in lateral plasma membrane	ISO Inferred from Sequence Orthology more info
located_in membrane	IEA Inferred from Electronic Annotation more info
located_in neuron projection	IEA Inferred from Electronic Annotation more info
located_in neuron projection	ISO Inferred from Sequence Orthology more info
located_in neuronal cell body	IEA Inferred from Electronic Annotation more info
located_in neuronal cell body	ISO Inferred from Sequence Orthology more info
is_active_in nucleus	IBA Inferred from Biological aspect of Ancestor more info
located_in nucleus	IEA Inferred from Electronic Annotation more info
is_active_in nucleus	ISO Inferred from Sequence Orthology more info
located_in nucleus	ISO Inferred from Sequence Orthology more info
is_active_in nucleus	ISS Inferred from Sequence or Structural Similarity more info
located_in plasma membrane	IEA Inferred from Electronic Annotation more info
part_of protein phosphatase type 2A complex	IBA Inferred from Biological aspect of Ancestor more info
part_of protein phosphatase type 2A complex	IDA Inferred from Direct Assay more info	PubMed
part_of protein phosphatase type 2A complex	IEA Inferred from Electronic Annotation more info
part_of protein phosphatase type 2A complex	ISO Inferred from Sequence Orthology more info
is_active_in synapse	EXP Inferred from Experiment more info	PubMed
is_active_in synapse	IDA Inferred from Direct Assay more info	PubMed

General protein information

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Preferred Names: serine/threonine-protein phosphatase 2A 65 kDa regulatory subunit A alpha isoform

Names: protein phosphatase PP2A; serine/threonine protein phosphatase A subunit type 2A

NP_058587.1

EC 3.1.3.16

NCBI Reference Sequences (RefSeq)

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RefSeqs maintained independently of Annotated Genomes

These reference sequences exist independently of genome builds. Explain

These reference sequences are curated independently of the genome annotation cycle, so their versions may not match the RefSeq versions in the current genome build. Identify version mismatches by comparing the version of the RefSeq in this section to the one reported in Genomic regions, transcripts, and products above.

mRNA and Protein(s)

NM_016891.3 → NP_058587.1 serine/threonine-protein phosphatase 2A 65 kDa regulatory subunit A alpha isoform

See identical proteins and their annotated locations for NP_058587.1

Status: PROVISIONAL

Source sequence(s)

AC109204

Consensus CDS

CCDS28432.1

UniProtKB/Swiss-Prot

Q76MZ3

Related

ENSMUSP00000007708.8, ENSMUST00000007708.14

Conserved Domains (3) summary

COG1413
Location:187 → 462

HEAT; HEAT repeat [General function prediction only]

sd00044
Location:245 → 269

HEAT; HEAT repeat [structural motif]

pfam02985
Location:166 → 196

HEAT; HEAT repeat