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P67777

- PP2AA_RABIT

UniProt

P67777 - PP2AA_RABIT

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Protein
Serine/threonine-protein phosphatase 2A catalytic subunit alpha isoform
Gene
PPP2CA
Organism
Oryctolagus cuniculus (Rabbit)
Status
Reviewed - Annotation score: 4 out of 5 - Experimental evidence at transcript leveli

Functioni

PP2A is the major phosphatase for microtubule-associated proteins (MAPs). PP2A can modulate the activity of phosphorylase B kinase casein kinase 2, mitogen-stimulated S6 kinase, and MAP-2 kinase. Cooperates with SGOL2 to protect centromeric cohesin from separase-mediated cleavage in oocytes specifically during meiosis I. Activates RAF1 by dephosphorylating it at 'Ser-259' By similarity.

Catalytic activityi

[a protein]-serine/threonine phosphate + H2O = [a protein]-serine/threonine + phosphate.

Cofactori

Binds 2 manganese ions per subunit By similarity.

Sites

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Metal bindingi57 – 571Manganese 1 By similarity
Metal bindingi59 – 591Manganese 1 By similarity
Metal bindingi85 – 851Manganese 1 By similarity
Metal bindingi85 – 851Manganese 2 By similarity
Metal bindingi117 – 1171Manganese 2 By similarity
Active sitei118 – 1181Proton donor By similarity
Metal bindingi167 – 1671Manganese 2 By similarity
Metal bindingi241 – 2411Manganese 2 By similarity

GO - Molecular functioni

  1. metal ion binding Source: UniProtKB-KW
  2. phosphoprotein phosphatase activity Source: UniProtKB-KW
  3. protein heterodimerization activity Source: UniProtKB

GO - Biological processi

  1. meiotic nuclear division Source: UniProtKB-KW
Complete GO annotation...

Keywords - Molecular functioni

Hydrolase, Protein phosphatase

Keywords - Biological processi

Meiosis

Keywords - Ligandi

Manganese, Metal-binding

Names & Taxonomyi

Protein namesi
Recommended name:
Serine/threonine-protein phosphatase 2A catalytic subunit alpha isoform (EC:3.1.3.16)
Short name:
PP2A-alpha
Gene namesi
Name:PPP2CA
OrganismiOryctolagus cuniculus (Rabbit)
Taxonomic identifieri9986 [NCBI]
Taxonomic lineageiEukaryotaMetazoaChordataCraniataVertebrataEuteleostomiMammaliaEutheriaEuarchontogliresGliresLagomorphaLeporidaeOryctolagus
ProteomesiUP000001811: Chromosome 3

Subcellular locationi

Cytoplasm. Nucleus By similarity. Chromosomecentromere By similarity. Cytoplasmcytoskeletonspindle pole By similarity
Note: In prometaphase cells, but not in anaphase cells, localizes at centromeres. During mitosis, also found at spindle poles. Centromeric localization requires the presence of SGOL2 By similarity.

GO - Cellular componenti

  1. chromosome, centromeric region Source: UniProtKB-SubCell
  2. cytoplasm Source: UniProtKB-SubCell
  3. nucleus Source: UniProtKB-SubCell
  4. spindle pole Source: UniProtKB-SubCell
Complete GO annotation...

Keywords - Cellular componenti

Centromere, Chromosome, Cytoplasm, Cytoskeleton, Nucleus

PTM / Processingi

Molecule processing

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Chaini1 – 309309Serine/threonine-protein phosphatase 2A catalytic subunit alpha isoform
PRO_0000058842Add
BLAST

Amino acid modifications

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Modified residuei307 – 3071Phosphotyrosine By similarity
Modified residuei309 – 3091Leucine methyl ester By similarity

Post-translational modificationi

Reversibly methyl esterified on Leu-309 by leucine carboxyl methyltransferase 1 (LCMT1) and protein phosphatase methylesterase 1 (PPME1). Carboxyl methylation influences the affinity of the catalytic subunit for the different regulatory subunits, thereby modulating the PP2A holoenzyme's substrate specificity, enzyme activity and cellular localization By similarity.
Phosphorylation of either threonine (by autophosphorylation-activated protein kinase) or tyrosine results in inactivation of the phosphatase. Auto-dephosphorylation has been suggested as a mechanism for reactivation By similarity.

Keywords - PTMi

Methylation, Phosphoprotein

Proteomic databases

PRIDEiP67777.

Interactioni

Subunit structurei

PP2A consists of a common heterodimeric core enzyme, composed of PPP2CA a 36 kDa catalytic subunit (subunit C) and PPP2R1A a 65 kDa constant regulatory subunit (PR65 or subunit A), that associates with a variety of regulatory subunits. Proteins that associate with the core dimer include three families of regulatory subunits B (the R2/B/PR55/B55, R3/B''/PR72/PR130/PR59 and R5/B'/B56 families), the 48 kDa variable regulatory subunit, viral proteins, and cell signaling molecules. Interacts with NXN; the interaction is direct. Interacts with TP53, SGOL1 and SGOL2. Interacts with AXIN1; the interaction dephosphorylates AXIN1 By similarity. Interacts with PIM3; this interaction promotes dephosphorylation, ubiquitination and proteasomal degradation of PIM3 By similarity. Interacts with RAF1. Interacts with GSK3B (via C2 domain) By similarity. Interaction with IGBP1 protects unassembled PPP2CA from degradative ubiquitination By similarity.

Structurei

3D structure databases

ProteinModelPortaliP67777.
SMRiP67777. Positions 2-296.

Family & Domainsi

Sequence similaritiesi

Phylogenomic databases

eggNOGiCOG0639.
GeneTreeiENSGT00550000074618.
HOGENOMiHOG000172696.
HOVERGENiHBG000216.
OMAiQVKTLCD.
OrthoDBiEOG74N5H2.
TreeFamiTF105559.

Family and domain databases

Gene3Di3.60.21.10. 1 hit.
InterProiIPR004843. Calcineurin-like_PHP_apaH.
IPR029052. Metallo-depent_PP-like.
IPR006186. Ser/Thr-sp_prot-phosphatase.
[Graphical view]
PfamiPF00149. Metallophos. 1 hit.
[Graphical view]
PRINTSiPR00114. STPHPHTASE.
SMARTiSM00156. PP2Ac. 1 hit.
[Graphical view]
SUPFAMiSSF56300. SSF56300. 1 hit.
PROSITEiPS00125. SER_THR_PHOSPHATASE. 1 hit.
[Graphical view]

Sequencei

Sequence statusi: Complete.

P67777-1 [UniParc]FASTAAdd to Basket

« Hide

MDEKVFTKEL DQWIEQLNEC KQLSESQVKS LCEKAKEILT KESNVQEVRC    50
PVTVCGDVHG QFHDLMELFR IGGKSPDTNY LFMGDYVDRG YYSVETVTLL 100
VALKVRYRER ITILRGNHES RQITQVYGFY DECLRKYGNA NVWKYFTDLF 150
DYLPLTALVD GQIFCLHGGL SPSIDTLDHI RALDRLQEVP HEGPMCDLLW 200
SDPDDRGGWG ISPRGAGYTF GQDISETFNH ANGLTLVSRA HQLVMEGYNW 250
CHDRNVVTIF SAPNYCYRCG NQAAIMELDD TLKYSFLQFD PAPRRGEPHV 300
TRRTPDYFL 309
Length:309
Mass (Da):35,594
Last modified:October 11, 2004 - v1
Checksum:iC602291F78F34555
GO

Sequence databases

Select the link destinations:
EMBL
GenBank
DDBJ
Links Updated
X06087 mRNA. Translation: CAA29471.1.
PIRiS00104. PARBA1.
S01986. PAHU2A.
RefSeqiNP_001095156.1. NM_001101686.1.
UniGeneiOcu.3271.

Genome annotation databases

EnsembliENSOCUT00000015956; ENSOCUP00000013713; ENSOCUG00000015961.
GeneIDi100009252.

Cross-referencesi

Sequence databases

Select the link destinations:
EMBL
GenBank
DDBJ
Links Updated
X06087 mRNA. Translation: CAA29471.1 .
PIRi S00104. PARBA1.
S01986. PAHU2A.
RefSeqi NP_001095156.1. NM_001101686.1.
UniGenei Ocu.3271.

3D structure databases

ProteinModelPortali P67777.
SMRi P67777. Positions 2-296.
ModBasei Search...
MobiDBi Search...

Chemistry

BindingDBi P67777.
ChEMBLi CHEMBL5591.

Proteomic databases

PRIDEi P67777.

Protocols and materials databases

Structural Biology Knowledgebase Search...

Genome annotation databases

Ensembli ENSOCUT00000015956 ; ENSOCUP00000013713 ; ENSOCUG00000015961 .
GeneIDi 100009252.

Organism-specific databases

CTDi 5515.

Phylogenomic databases

eggNOGi COG0639.
GeneTreei ENSGT00550000074618.
HOGENOMi HOG000172696.
HOVERGENi HBG000216.
OMAi QVKTLCD.
OrthoDBi EOG74N5H2.
TreeFami TF105559.

Family and domain databases

Gene3Di 3.60.21.10. 1 hit.
InterProi IPR004843. Calcineurin-like_PHP_apaH.
IPR029052. Metallo-depent_PP-like.
IPR006186. Ser/Thr-sp_prot-phosphatase.
[Graphical view ]
Pfami PF00149. Metallophos. 1 hit.
[Graphical view ]
PRINTSi PR00114. STPHPHTASE.
SMARTi SM00156. PP2Ac. 1 hit.
[Graphical view ]
SUPFAMi SSF56300. SSF56300. 1 hit.
PROSITEi PS00125. SER_THR_PHOSPHATASE. 1 hit.
[Graphical view ]
ProtoNeti Search...

Publicationsi

  1. "Isolation and sequence analysis of a cDNA clone encoding the entire catalytic subunit of a type-2A protein phosphatase."
    da Cruz e Silva O.B., Alemany S., Campbell D.G., Cohen P.T.W.
    FEBS Lett. 221:415-422(1987) [PubMed] [Europe PMC] [Abstract]
    Cited for: NUCLEOTIDE SEQUENCE [MRNA].
    Tissue: Skeletal muscle.

Entry informationi

Entry nameiPP2AA_RABIT
AccessioniPrimary (citable) accession number: P67777
Secondary accession number(s): P05323, P13197
Entry historyi
Integrated into UniProtKB/Swiss-Prot: October 11, 2004
Last sequence update: October 11, 2004
Last modified: July 9, 2014
This is version 74 of the entry and version 1 of the sequence. [Complete history]
Entry statusiReviewed (UniProtKB/Swiss-Prot)
Annotation programChordata Protein Annotation Program

Miscellaneousi

Keywords - Technical termi

Complete proteome, Reference proteome

Documents

  1. SIMILARITY comments
    Index of protein domains and families

External Data

Dasty 3

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