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Protein

Serine/threonine-protein phosphatase 2A catalytic subunit beta isoform

Gene

PPP2CB

Organism
Oryctolagus cuniculus (Rabbit)
Status
Reviewed-Annotation score: Annotation score: 5 out of 5-Experimental evidence at protein leveli

Functioni

PP2A can modulate the activity of phosphorylase B kinase casein kinase 2, mitogen-stimulated S6 kinase, and MAP-2 kinase.

Catalytic activityi

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

Cofactori

Mn2+By similarityNote: Binds 2 manganese ions per subunit.By similarity

Sites

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Metal bindingi57Manganese 1By similarity1
Metal bindingi59Manganese 1By similarity1
Metal bindingi85Manganese 1By similarity1
Metal bindingi85Manganese 2By similarity1
Metal bindingi117Manganese 2By similarity1
Active sitei118Proton donorBy similarity1
Metal bindingi167Manganese 2By similarity1
Metal bindingi241Manganese 2By similarity1

GO - Molecular functioni

GO - Biological processi

Complete GO annotation...

Keywords - Molecular functioni

Hydrolase, Protein phosphatase

Keywords - Ligandi

Manganese, Metal-binding

Names & Taxonomyi

Protein namesi
Recommended name:
Serine/threonine-protein phosphatase 2A catalytic subunit beta isoform (EC:3.1.3.16)
Short name:
PP2A-beta
Gene namesi
Name:PPP2CB
OrganismiOryctolagus cuniculus (Rabbit)
Taxonomic identifieri9986 [NCBI]
Taxonomic lineageiEukaryotaMetazoaChordataCraniataVertebrataEuteleostomiMammaliaEutheriaEuarchontogliresGliresLagomorphaLeporidaeOryctolagus
Proteomesi
  • UP000001811 Componenti: Chromosome 2

Subcellular locationi

GO - Cellular componenti

Complete GO annotation...

Keywords - Cellular componenti

Centromere, Chromosome, Cytoplasm, Cytoskeleton, Nucleus

PTM / Processingi

Molecule processing

Feature keyPosition(s)DescriptionActionsGraphical viewLength
ChainiPRO_00000588481 – 309Serine/threonine-protein phosphatase 2A catalytic subunit beta isoformAdd BLAST309

Amino acid modifications

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Modified residuei307Phosphotyrosine1 Publication1
Modified residuei309Leucine methyl esterBy similarity1

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).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).By similarity
May be monoubiquitinated by NOSIP.By similarity

Keywords - PTMi

Methylation, Phosphoprotein, Ubl conjugation

Proteomic databases

PRIDEiP11611.

PTM databases

iPTMnetiP11611.

Interactioni

Subunit structurei

PP2A consists of a common heterodimeric core enzyme, composed of a 36 kDa catalytic subunit (subunit C) and 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. Binds PPME1 (By similarity). May indirectly interact with SGO1, most probably through regulatory B56 subunits. Found in a complex with at least ARL2, PPP2CB, PPP2R1A, PPP2R2A, PPP2R5E and TBCD. Interacts with TBCD (By similarity). Interacts with CTTNBP2NL (By similarity).By similarity

Protein-protein interaction databases

STRINGi9986.ENSOCUP00000004530.

Structurei

3D structure databases

ProteinModelPortaliP11611.
ModBaseiSearch...
MobiDBiSearch...

Family & Domainsi

Sequence similaritiesi

Belongs to the PPP phosphatase family. PP-1 subfamily.Curated

Phylogenomic databases

eggNOGiKOG0371. Eukaryota.
COG0639. LUCA.
GeneTreeiENSGT00550000074618.
HOGENOMiHOG000172696.
HOVERGENiHBG000216.
InParanoidiP11611.
KOiK04382.
OMAiMDDKTFT.
OrthoDBiEOG091G0B6S.
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.

P11611-1 [UniParc]FASTAAdd to basket

« Hide

        10         20         30         40         50
MDDKTFTKEL DQWVEQLNEC KQLNENQVRT LCEKAKEILT KESNVQEVRC
60 70 80 90 100
PVTVCGDVHG QFHDLMELFR IGGKSPDTNY LFMGDYVDRG YYSVETVTLL
110 120 130 140 150
VALKVRYPER ITILRGNHES RQITQVYGFY DECLRKYGNA NVWKYFTDLF
160 170 180 190 200
DYLPLTALVD GQIFCLHGGL SPSIDTLDHI RALDRLQEVP HEGPMCDLLW
210 220 230 240 250
SDPDDRGGWG ISPRGAGYTF GQDISETFNH ANGLTLVSRA HQLVMEGYNW
260 270 280 290 300
CHDRNVVTIF SAPNYCYRCG NQAAIMELDD TLKYSFLQFD PAPRRGEPHV

TRRTPDYFL
Length:309
Mass (Da):35,605
Last modified:October 1, 1989 - v1
Checksum:iBE76EEB6B0EAC19E
GO

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
Y00763 mRNA. Translation: CAA68732.1.
PIRiS00220. PARB2B.
RefSeqiNP_001095177.1. NM_001101707.1.
UniGeneiOcu.2088.

Genome annotation databases

EnsembliENSOCUT00000005228; ENSOCUP00000004530; ENSOCUG00000005230.
GeneIDi100009300.
KEGGiocu:100009300.

Cross-referencesi

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
Y00763 mRNA. Translation: CAA68732.1.
PIRiS00220. PARB2B.
RefSeqiNP_001095177.1. NM_001101707.1.
UniGeneiOcu.2088.

3D structure databases

ProteinModelPortaliP11611.
ModBaseiSearch...
MobiDBiSearch...

Protein-protein interaction databases

STRINGi9986.ENSOCUP00000004530.

PTM databases

iPTMnetiP11611.

Proteomic databases

PRIDEiP11611.

Protocols and materials databases

Structural Biology KnowledgebaseSearch...

Genome annotation databases

EnsembliENSOCUT00000005228; ENSOCUP00000004530; ENSOCUG00000005230.
GeneIDi100009300.
KEGGiocu:100009300.

Organism-specific databases

CTDi5516.

Phylogenomic databases

eggNOGiKOG0371. Eukaryota.
COG0639. LUCA.
GeneTreeiENSGT00550000074618.
HOGENOMiHOG000172696.
HOVERGENiHBG000216.
InParanoidiP11611.
KOiK04382.
OMAiMDDKTFT.
OrthoDBiEOG091G0B6S.
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]
ProtoNetiSearch...

Entry informationi

Entry nameiPP2AB_RABIT
AccessioniPrimary (citable) accession number: P11611
Entry historyi
Integrated into UniProtKB/Swiss-Prot: October 1, 1989
Last sequence update: October 1, 1989
Last modified: November 30, 2016
This is version 128 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

Similar proteinsi

Links to similar proteins from the UniProt Reference Clusters (UniRef) at 100%, 90% and 50% sequence identity:
100%UniRef100 combines identical sequences and sub-fragments with 11 or more residues from any organism into one UniRef entry.
90%UniRef90 is built by clustering UniRef100 sequences that have at least 90% sequence identity to, and 80% overlap with, the longest sequence (a.k.a seed sequence).
50%UniRef50 is built by clustering UniRef90 seed sequences that have at least 50% sequence identity to, and 80% overlap with, the longest sequence in the cluster.