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PPP1CA
HPA
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  • PPP1CA
PROTEIN SUMMARY GENE INFORMATION RNA DATA ANTIBODY DATA
GENERAL INFORMATIONi

General description of the gene and the encoded protein(s) using information from HGNC and Ensembl, as well as predictions made by the Human Protein Atlas project.

Gene namei

Official gene symbol, which is typically a short form of the gene name, according to HGNC.

PPP1CA
Synonyms PP-1A, PP1A, PP1alpha, PPP1A
Gene descriptioni

Full gene name according to HGNC.

Protein phosphatase 1 catalytic subunit alpha
Protein classi

Assigned HPA protein class(es) for the encoded protein(s).

Enzymes
Metabolic proteins
Plasma proteins
Predicted locationi

All transcripts of all genes have been analyzed regarding the location(s) of corresponding protein based on prediction methods for signal peptides and transmembrane regions.

  • Genes with at least one transcript predicted to encode a secreted protein, according to prediction methods or to UniProt location data, have been further annotated and classified with the aim to determine if the corresponding protein(s) are secreted or actually retained in intracellular locations or membrane-attached.

  • Remaining genes, with no transcript predicted to encode a secreted protein, will be assigned the prediction-based location(s).

The annotated location overrules the predicted location, so that a gene encoding a predicted secreted protein that has been annotated as intracellular will have intracellular as the final location.

Intracellular
Protein evidence Evidence at protein level (all genes)
GENE INFORMATIONi

Gene information from Ensembl and Entrez, as well as links to available gene identifiers are displayed here. Information was retrieved from Ensembl if not indicated otherwise.

Chromosome 11
Cytoband q13.2
Chromosome location (bp) 67398181 - 67421183
Number of transcriptsi

Number of protein-coding transcripts from the gene as defined by Ensembl.

5
Ensembl ENSG00000172531 (version 109)
Entrez gene 5499
HGNC HGNC:9281
UniProt P62136 (UniProt - Evidence at protein level)
neXtProt NX_P62136
GeneCards PPP1CA
Antibodypedia PPP1CA antibodies


PROTEIN FUNCTION
Protein function (UniProt)i

Useful information about the protein provided by UniProt.

Protein phosphatase that associates with over 200 regulatory proteins to form highly specific holoenzymes which dephosphorylate hundreds of biological targets. Protein phosphatase 1 (PP1) is essential for cell division, and participates in the regulation of glycogen metabolism, muscle contractility and protein synthesis. Involved in regulation of ionic conductances and long-term synaptic plasticity. May play an important role in dephosphorylating substrates such as the postsynaptic density-associated Ca(2+)/calmodulin dependent protein kinase II. Component of the PTW/PP1 phosphatase complex, which plays a role in the control of chromatin structure and cell cycle progression during the transition from mitosis into interphase. Regulates NEK2 function in terms of kinase activity and centrosome number and splitting, both in the presence and absence of radiation-induced DNA damage. Regulator of neural tube and optic fissure closure, and enteric neural crest cell (ENCCs) migration during development. In balance with CSNK1D and CSNK1E, determines the circadian period length, through the regulation of the speed and rhythmicity of PER1 and PER2 phosphorylation. May dephosphorylate CSNK1D and CSNK1E. Dephosphorylates the 'Ser-418' residue of FOXP3 in regulatory T-cells (Treg) from patients with rheumatoid arthritis, thereby inactivating FOXP3 and rendering Treg cells functionally defective 1. Dephosphorylates CENPA 2. Dephosphorylates the 'Ser-139' residue of ATG16L1 causing dissociation of ATG12-ATG5-ATG16L1 complex, thereby inhibiting autophagy 3.... show less
Molecular function (UniProt)i

Keywords assigned by UniProt to proteins due to their particular molecular function.

Hydrolase, Protein phosphatase
Biological process (UniProt)i

Keywords assigned by UniProt to proteins because they are involved in a particular biological process.

Carbohydrate metabolism, Cell cycle, Cell division, Glycogen metabolism, Host-virus interaction
Ligand (UniProt)i

Keywords assigned by UniProt to proteins because they bind, are associated with, or whose activity is dependent of some molecule.

Manganese, Metal-binding
Gene summary (Entrez)i

Useful information about the gene from Entrez

The protein encoded by this gene is one of the three catalytic subunits of protein phosphatase 1 (PP1). This broadly expressed gene encodes the alpha subunit of the PP1 complex that associates with over 200 regulatory proteins to form holoenzymes which dephosphorylate their biological targets with high specificity. PP1 is a serine/threonine specific protein phosphatase known to be involved in the regulation of a variety of cellular processes, such as cell division, glycogen metabolism, muscle contractility, protein synthesis, and HIV-1 viral transcription. Increased PP1 activity has been observed in the end stage of heart failure. Studies suggest that PP1 is an important regulator of cardiac function and that PP1 deregulation is implicated in diabetes and multiple types of cancer. Three alternatively spliced transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Jul 2020]... show less
PROTEIN INFORMATIONi

The protein information section displays alternative protein-coding transcripts (splice variants) encoded by this gene according to the Ensembl database.

The Splice variant identifier links to the Ensembl website protein summary for the selected splice variant. The data in the Swissprot and TrEMBL columns links to corresponding pages in the UniProt database.

The protein classes assigned to this protein are shown if expanding the data in the protein class column. Parent protein classes are in bold font and subclasses are listed under the parent class.

The length of the protein (amino acid residues according to Ensembl), molecular mass (kDalton), predicted signal peptide and number of predicted transmembrane region(s) according to in-house majority decision methods based on sets of predictors are also reported.
Splice variant SwissProt TrEMBL Protein class Gene ontology Length & mass Signal peptide
(predicted)
Transmembrane regions
(predicted)
PPP1CA-201
ENSP00000326031
ENST00000312989
P62136
[Direct mapping] Serine/threonine-protein phosphatase PP1-alpha catalytic subunit
Show all
A0A140VJS9
[Target identity:100%; Query identity:100%] Serine/threonine-protein phosphatase
Show all
Enzymes
   ENZYME proteins
   Hydrolases
Metabolic proteins
   SPOCTOPUS predicted membrane proteins
Predicted intracellular proteins
   Intracellular proteins predicted by MDM and MDSEC
Plasma proteins
Mapped to neXtProt
   neXtProt - Evidence at protein level
Protein evidence (Kim et al 2014)
Protein evidence (Ezkurdia et al 2014)
Show all
GO:0000164 [protein phosphatase type 1 complex]
GO:0000781 [chromosome, telomeric region]
GO:0004721 [phosphoprotein phosphatase activity]
GO:0004722 [protein serine/threonine phosphatase activity]
GO:0005515 [protein binding]
GO:0005634 [nucleus]
GO:0005654 [nucleoplasm]
GO:0005730 [nucleolus]
GO:0005737 [cytoplasm]
GO:0005829 [cytosol]
GO:0005886 [plasma membrane]
GO:0005912 [adherens junction]
GO:0005975 [carbohydrate metabolic process]
GO:0005977 [glycogen metabolic process]
GO:0006470 [protein dephosphorylation]
GO:0007049 [cell cycle]
GO:0010288 [response to lead ion]
GO:0016311 [dephosphorylation]
GO:0016787 [hydrolase activity]
GO:0016791 [phosphatase activity]
GO:0017018 [myosin phosphatase activity]
GO:0032091 [negative regulation of protein binding]
GO:0032922 [circadian regulation of gene expression]
GO:0035970 [peptidyl-threonine dephosphorylation]
GO:0036496 [regulation of translational initiation by eIF2 alpha dephosphorylation]
GO:0042752 [regulation of circadian rhythm]
GO:0043153 [entrainment of circadian clock by photoperiod]
GO:0046872 [metal ion binding]
GO:0051301 [cell division]
GO:0060828 [regulation of canonical Wnt signaling pathway]
GO:0070062 [extracellular exosome]
GO:0070262 [peptidyl-serine dephosphorylation]
GO:0072357 [PTW/PP1 phosphatase complex]
GO:0098609 [cell-cell adhesion]
GO:0098641 [cadherin binding involved in cell-cell adhesion]
GO:1904886 [beta-catenin destruction complex disassembly]
Show all
341 aa
38.6 kDa
No 0
PPP1CA-202
ENSP00000350974
ENST00000358239
P62136
[Direct mapping] Serine/threonine-protein phosphatase PP1-alpha catalytic subunit
Show all
Enzymes
   ENZYME proteins
   Hydrolases
Metabolic proteins
   SPOCTOPUS predicted membrane proteins
Predicted intracellular proteins
   Intracellular proteins predicted by MDM and MDSEC
Plasma proteins
Mapped to neXtProt
   neXtProt - Evidence at protein level
Protein evidence (Kim et al 2014)
Protein evidence (Ezkurdia et al 2014)
Show all
GO:0000164 [protein phosphatase type 1 complex]
GO:0000781 [chromosome, telomeric region]
GO:0004721 [phosphoprotein phosphatase activity]
GO:0004722 [protein serine/threonine phosphatase activity]
GO:0005515 [protein binding]
GO:0005634 [nucleus]
GO:0005654 [nucleoplasm]
GO:0005730 [nucleolus]
GO:0005737 [cytoplasm]
GO:0005829 [cytosol]
GO:0005886 [plasma membrane]
GO:0005912 [adherens junction]
GO:0005975 [carbohydrate metabolic process]
GO:0005977 [glycogen metabolic process]
GO:0006470 [protein dephosphorylation]
GO:0007049 [cell cycle]
GO:0010288 [response to lead ion]
GO:0016311 [dephosphorylation]
GO:0016787 [hydrolase activity]
GO:0016791 [phosphatase activity]
GO:0017018 [myosin phosphatase activity]
GO:0032091 [negative regulation of protein binding]
GO:0032922 [circadian regulation of gene expression]
GO:0035970 [peptidyl-threonine dephosphorylation]
GO:0036496 [regulation of translational initiation by eIF2 alpha dephosphorylation]
GO:0042752 [regulation of circadian rhythm]
GO:0043153 [entrainment of circadian clock by photoperiod]
GO:0046872 [metal ion binding]
GO:0051301 [cell division]
GO:0060828 [regulation of canonical Wnt signaling pathway]
GO:0070062 [extracellular exosome]
GO:0070262 [peptidyl-serine dephosphorylation]
GO:0072357 [PTW/PP1 phosphatase complex]
GO:0098609 [cell-cell adhesion]
GO:0098641 [cadherin binding involved in cell-cell adhesion]
GO:1904886 [beta-catenin destruction complex disassembly]
Show all
286 aa
32.6 kDa
No 0
PPP1CA-203
ENSP00000365936
ENST00000376745
P62136
[Direct mapping] Serine/threonine-protein phosphatase PP1-alpha catalytic subunit
Show all
Enzymes
   ENZYME proteins
   Hydrolases
Metabolic proteins
   SPOCTOPUS predicted membrane proteins
Predicted intracellular proteins
   Intracellular proteins predicted by MDM and MDSEC
Plasma proteins
Mapped to neXtProt
   neXtProt - Evidence at protein level
Protein evidence (Kim et al 2014)
Protein evidence (Ezkurdia et al 2014)
Show all
GO:0000164 [protein phosphatase type 1 complex]
GO:0000781 [chromosome, telomeric region]
GO:0004721 [phosphoprotein phosphatase activity]
GO:0004722 [protein serine/threonine phosphatase activity]
GO:0005515 [protein binding]
GO:0005634 [nucleus]
GO:0005654 [nucleoplasm]
GO:0005730 [nucleolus]
GO:0005737 [cytoplasm]
GO:0005829 [cytosol]
GO:0005886 [plasma membrane]
GO:0005912 [adherens junction]
GO:0005975 [carbohydrate metabolic process]
GO:0005977 [glycogen metabolic process]
GO:0005979 [regulation of glycogen biosynthetic process]
GO:0005981 [regulation of glycogen catabolic process]
GO:0006470 [protein dephosphorylation]
GO:0007049 [cell cycle]
GO:0008157 [protein phosphatase 1 binding]
GO:0010288 [response to lead ion]
GO:0016311 [dephosphorylation]
GO:0016787 [hydrolase activity]
GO:0016791 [phosphatase activity]
GO:0017018 [myosin phosphatase activity]
GO:0030324 [lung development]
GO:0032091 [negative regulation of protein binding]
GO:0032922 [circadian regulation of gene expression]
GO:0035970 [peptidyl-threonine dephosphorylation]
GO:0036496 [regulation of translational initiation by eIF2 alpha dephosphorylation]
GO:0042587 [glycogen granule]
GO:0042752 [regulation of circadian rhythm]
GO:0043005 [neuron projection]
GO:0043021 [ribonucleoprotein complex binding]
GO:0043025 [neuronal cell body]
GO:0043153 [entrainment of circadian clock by photoperiod]
GO:0043197 [dendritic spine]
GO:0043204 [perikaryon]
GO:0044877 [protein-containing complex binding]
GO:0046872 [metal ion binding]
GO:0048754 [branching morphogenesis of an epithelial tube]
GO:0051301 [cell division]
GO:0060828 [regulation of canonical Wnt signaling pathway]
GO:0070062 [extracellular exosome]
GO:0070262 [peptidyl-serine dephosphorylation]
GO:0072357 [PTW/PP1 phosphatase complex]
GO:0098609 [cell-cell adhesion]
GO:0098641 [cadherin binding involved in cell-cell adhesion]
GO:0098793 [presynapse]
GO:0098794 [postsynapse]
GO:0098978 [glutamatergic synapse]
GO:1904886 [beta-catenin destruction complex disassembly]
GO:2001241 [positive regulation of extrinsic apoptotic signaling pathway in absence of ligand]
Show all
330 aa
37.5 kDa
No 0
PPP1CA-205
ENSP00000431146
ENST00000527663
E9PMD7
[Direct mapping] Serine/threonine-protein phosphatase
Show all
Metabolic proteins
Predicted intracellular proteins
   Intracellular proteins predicted by MDM and MDSEC
Protein evidence (Ezkurdia et al 2014)
Show all
GO:0000164 [protein phosphatase type 1 complex]
GO:0004721 [phosphoprotein phosphatase activity]
GO:0004722 [protein serine/threonine phosphatase activity]
GO:0005654 [nucleoplasm]
GO:0005730 [nucleolus]
GO:0005737 [cytoplasm]
GO:0005829 [cytosol]
GO:0005886 [plasma membrane]
GO:0005975 [carbohydrate metabolic process]
GO:0005977 [glycogen metabolic process]
GO:0006470 [protein dephosphorylation]
GO:0016787 [hydrolase activity]
GO:0017018 [myosin phosphatase activity]
GO:0046872 [metal ion binding]
GO:0051301 [cell division]
GO:0072357 [PTW/PP1 phosphatase complex]
Show all
295 aa
33.4 kDa
No 0
PPP1CA-214
ENSP00000503926
ENST00000679175
A0A7I2V4F7
[Direct mapping] Serine/threonine-protein phosphatase
Show all
Metabolic proteins
   SPOCTOPUS predicted membrane proteins
Predicted intracellular proteins
   Intracellular proteins predicted by MDM and MDSEC
Protein evidence (Ezkurdia et al 2014)
Show all
GO:0000164 [protein phosphatase type 1 complex]
GO:0004721 [phosphoprotein phosphatase activity]
GO:0004722 [protein serine/threonine phosphatase activity]
GO:0005654 [nucleoplasm]
GO:0005730 [nucleolus]
GO:0005737 [cytoplasm]
GO:0005975 [carbohydrate metabolic process]
GO:0005977 [glycogen metabolic process]
GO:0006470 [protein dephosphorylation]
GO:0016787 [hydrolase activity]
GO:0017018 [myosin phosphatase activity]
GO:0046872 [metal ion binding]
GO:0051301 [cell division]
GO:0072357 [PTW/PP1 phosphatase complex]
Show all
335 aa
37.8 kDa
No 0

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