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Protein

Serine/threonine-protein phosphatase PP2A-3 catalytic subunit

Gene

PP2A3

Organism
Arabidopsis thaliana (Mouse-ear cress)
Status
Reviewed-Annotation score: Annotation score: 5 out of 5-Experimental evidence at protein leveli

Functioni

Functions redundantly with PP2A4, and is involved in establishing auxin gradients, apical-basal axis of polarity and root and shoot apical meristem during embryogenesis. May dephosphorylate PIN1 and regulate its subcellular distribution for polar auxin transport (PubMed:23167545). Involved in the regulation of formative cell division in roots by dephosphorylating ACR4 protein kinase (PubMed:26792519).2 Publications

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 bindingi61Manganese 1By similarity1
Metal bindingi63Manganese 1By similarity1
Metal bindingi89Manganese 1By similarity1
Metal bindingi89Manganese 2By similarity1
Metal bindingi121Manganese 2By similarity1
Active sitei122Proton donorBy similarity1
Metal bindingi171Manganese 2By similarity1
Metal bindingi245Manganese 2By similarity1

GO - Molecular functioni

  • metal ion binding Source: UniProtKB-KW
  • phosphoprotein phosphatase activity Source: TAIR

GO - Biological processi

  • primary root development Source: TAIR
  • root development Source: TAIR
  • stem cell differentiation Source: TAIR

Keywordsi

Molecular functionHydrolase, Protein phosphatase
LigandManganese, Metal-binding

Names & Taxonomyi

Protein namesi
Recommended name:
Serine/threonine-protein phosphatase PP2A-3 catalytic subunit (EC:3.1.3.16)
Alternative name(s):
Protein phosphatase 2A isoform 3
Gene namesi
Name:PP2A31 Publication
Synonyms:PP2A41 Publication
Ordered Locus Names:At2g42500
ORF Names:MHK10.22
OrganismiArabidopsis thaliana (Mouse-ear cress)
Taxonomic identifieri3702 [NCBI]
Taxonomic lineageiEukaryotaViridiplantaeStreptophytaEmbryophytaTracheophytaSpermatophytaMagnoliophytaeudicotyledonsGunneridaePentapetalaerosidsmalvidsBrassicalesBrassicaceaeCamelineaeArabidopsis
Proteomesi
  • UP000006548 Componenti: Chromosome 2

Organism-specific databases

TAIRilocus:2041579. AT2G42500.

Subcellular locationi

GO - Cellular componenti

  • cytoplasm Source: TAIR
  • cytosol Source: TAIR
  • nucleus Source: TAIR
  • plasma membrane Source: TAIR

Keywords - Cellular componenti

Cytoplasm

PTM / Processingi

Molecule processing

Feature keyPosition(s)DescriptionActionsGraphical viewLength
ChainiPRO_00000588541 – 313Serine/threonine-protein phosphatase PP2A-3 catalytic subunitAdd BLAST313

Proteomic databases

PaxDbiQ07100.

Expressioni

Gene expression databases

ExpressionAtlasiQ07100. baseline and differential.
GenevisibleiQ07100. AT.

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 (subunit A), that associates with a variety of regulatory subunits such as subunits B (the R2/B/PR55/B55, R3/B''/PR72/PR130/PR59 and R5/B'/B56 families) (By similarity). Interacts with ACR4 (PubMed:26792519). Interacts with TAP46 (PubMed:21216945, PubMed:24357600).By similarity3 Publications

Protein-protein interaction databases

BioGridi4187. 3 interactors.
STRINGi3702.AT2G42500.1.

Structurei

3D structure databases

ProteinModelPortaliQ07100.
SMRiQ07100.
ModBaseiSearch...
MobiDBiSearch...

Family & Domainsi

Sequence similaritiesi

Belongs to the PPP phosphatase family. PP-2A subfamily.Curated

Phylogenomic databases

eggNOGiKOG0371. Eukaryota.
COG0639. LUCA.
HOGENOMiHOG000172696.
InParanoidiQ07100.
KOiK04382.
OMAiHRITIIR.
OrthoDBiEOG09360EXD.
PhylomeDBiQ07100.

Family and domain databases

Gene3Di3.60.21.10. 1 hit.
InterProiView protein in InterPro
IPR004843. Calcineurin-like_PHP_ApaH.
IPR029052. Metallo-depent_PP-like.
IPR006186. Ser/Thr-sp_prot-phosphatase.
PfamiView protein in Pfam
PF00149. Metallophos. 1 hit.
PRINTSiPR00114. STPHPHTASE.
SMARTiView protein in SMART
SM00156. PP2Ac. 1 hit.
SUPFAMiSSF56300. SSF56300. 1 hit.
PROSITEiView protein in PROSITE
PS00125. SER_THR_PHOSPHATASE. 1 hit.

Sequencei

Sequence statusi: Complete.

This entry describes 1 isoform i produced by alternative splicing. AlignAdd to basket

Note: A number of isoforms are produced. According to EST sequences.
Isoform 1 (identifier: Q07100-1) [UniParc]FASTAAdd to basket

This isoform has been chosen as the 'canonical' sequence. All positional information in this entry refers to it. This is also the sequence that appears in the downloadable versions of the entry.

« Hide

        10         20         30         40         50
MGANSIPTDA TIDLDEQISQ LMQCKPLSEQ QVRALCEKAK EILMDESNVQ
60 70 80 90 100
PVKSPVTICG DIHGQFHDLA ELFRIGGMCP DTNYLFMGDY VDRGYYSVET
110 120 130 140 150
VTLLVALKMR YPQRITILRG NHESRQITQV YGFYDECLRK YGNANVWKIF
160 170 180 190 200
TDLFDYFPLT ALVESEIFCL HGGLSPSIET LDNIRNFDRV QEVPHEGPMC
210 220 230 240 250
DLLWSDPDDR CGWGISPRGA GYTFGQDISE QFNHTNNLKL IARAHQLVMD
260 270 280 290 300
GYNWAHEQKV VTIFSAPNYC YRCGNMASIL EVDDCRNHTF IQFEPAPRRG
310
EPDVTRRTPD YFL
Length:313
Mass (Da):35,833
Last modified:February 1, 1996 - v2
Checksum:i2EF8542AD8A89C64
GO

Sequence cautioni

The sequence AAD10854 differs from that shown. Reason: Erroneous gene model prediction.Curated

Experimental Info

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Sequence conflicti15D → N in AAD10854 (PubMed:9524239).Curated1

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
M96841 mRNA. Translation: AAA64742.1.
U60135 Genomic DNA. Translation: AAD10854.1. Sequence problems.
AC005956 Genomic DNA. Translation: AAD23731.1.
AC007087 Genomic DNA. Translation: AAM15383.1.
CP002685 Genomic DNA. Translation: AEC10127.1.
BT010166 mRNA. Translation: AAQ22635.1.
PIRiS31163.
S52659.
RefSeqiNP_565974.1. NM_129811.4. [Q07100-1]
UniGeneiAt.20031.

Genome annotation databases

EnsemblPlantsiAT2G42500.1; AT2G42500.1; AT2G42500. [Q07100-1]
GeneIDi818850.
GrameneiAT2G42500.1; AT2G42500.1; AT2G42500.
KEGGiath:AT2G42500.

Keywords - Coding sequence diversityi

Alternative splicing

Cross-referencesi

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
M96841 mRNA. Translation: AAA64742.1.
U60135 Genomic DNA. Translation: AAD10854.1. Sequence problems.
AC005956 Genomic DNA. Translation: AAD23731.1.
AC007087 Genomic DNA. Translation: AAM15383.1.
CP002685 Genomic DNA. Translation: AEC10127.1.
BT010166 mRNA. Translation: AAQ22635.1.
PIRiS31163.
S52659.
RefSeqiNP_565974.1. NM_129811.4. [Q07100-1]
UniGeneiAt.20031.

3D structure databases

ProteinModelPortaliQ07100.
SMRiQ07100.
ModBaseiSearch...
MobiDBiSearch...

Protein-protein interaction databases

BioGridi4187. 3 interactors.
STRINGi3702.AT2G42500.1.

Proteomic databases

PaxDbiQ07100.

Protocols and materials databases

Structural Biology KnowledgebaseSearch...

Genome annotation databases

EnsemblPlantsiAT2G42500.1; AT2G42500.1; AT2G42500. [Q07100-1]
GeneIDi818850.
GrameneiAT2G42500.1; AT2G42500.1; AT2G42500.
KEGGiath:AT2G42500.

Organism-specific databases

AraportiAT2G42500.
TAIRilocus:2041579. AT2G42500.

Phylogenomic databases

eggNOGiKOG0371. Eukaryota.
COG0639. LUCA.
HOGENOMiHOG000172696.
InParanoidiQ07100.
KOiK04382.
OMAiHRITIIR.
OrthoDBiEOG09360EXD.
PhylomeDBiQ07100.

Miscellaneous databases

PROiPR:Q07100.

Gene expression databases

ExpressionAtlasiQ07100. baseline and differential.
GenevisibleiQ07100. AT.

Family and domain databases

Gene3Di3.60.21.10. 1 hit.
InterProiView protein in InterPro
IPR004843. Calcineurin-like_PHP_ApaH.
IPR029052. Metallo-depent_PP-like.
IPR006186. Ser/Thr-sp_prot-phosphatase.
PfamiView protein in Pfam
PF00149. Metallophos. 1 hit.
PRINTSiPR00114. STPHPHTASE.
SMARTiView protein in SMART
SM00156. PP2Ac. 1 hit.
SUPFAMiSSF56300. SSF56300. 1 hit.
PROSITEiView protein in PROSITE
PS00125. SER_THR_PHOSPHATASE. 1 hit.
ProtoNetiSearch...

Entry informationi

Entry nameiPP2A3_ARATH
AccessioniPrimary (citable) accession number: Q07100
Secondary accession number(s): Q7G9R3, Q9ZRF6
Entry historyiIntegrated into UniProtKB/Swiss-Prot: October 1, 1994
Last sequence update: February 1, 1996
Last modified: June 7, 2017
This is version 139 of the entry and version 2 of the sequence. See complete history.
Entry statusiReviewed (UniProtKB/Swiss-Prot)
Annotation programPlant Protein Annotation Program

Miscellaneousi

Keywords - Technical termi

Complete proteome, Reference proteome

Documents

  1. Arabidopsis thaliana
    Arabidopsis thaliana: entries and gene names
  2. 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.