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Protein

Serine/threonine-protein phosphatase 4 catalytic subunit 1

Gene

pph-4.1

Organism
Caenorhabditis elegans
Status
Reviewed-Annotation score: Annotation score: 4 out of 5-Experimental evidence at protein leveli

Functioni

Protein phosphatase which is essential for embryogenesis. Is required for centrosome maturation and is involved in gametogenesis. Required for meiotic spindle formation during spermatogenesis and for chiasmata formation during oogenesis. However, is apparently dispensable for female meiotic divisions, which do not depend on centrosomes.1 Publication

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 bindingi79Manganese 1By similarity1
Metal bindingi81Manganese 1By similarity1
Metal bindingi107Manganese 1By similarity1
Metal bindingi107Manganese 2By similarity1
Metal bindingi139Manganese 2By similarity1
Active sitei140Proton donorBy similarity1
Metal bindingi189Manganese 2By similarity1
Metal bindingi264Manganese 2By similarity1

GO - Molecular functioni

  • metal ion binding Source: UniProtKB-KW
  • protein serine/threonine phosphatase activity Source: WormBase

GO - Biological processi

  • dephosphorylation Source: WormBase
  • meiotic cell cycle Source: WormBase

Keywordsi

Molecular functionHydrolase, Protein phosphatase
LigandManganese, Metal-binding

Enzyme and pathway databases

SignaLinkiQ9XW79.

Names & Taxonomyi

Protein namesi
Recommended name:
Serine/threonine-protein phosphatase 4 catalytic subunit 1 (EC:3.1.3.16)
Short name:
PP4C-1
Gene namesi
Name:pph-4.1
ORF Names:Y75B8A.30
OrganismiCaenorhabditis elegans
Taxonomic identifieri6239 [NCBI]
Taxonomic lineageiEukaryotaMetazoaEcdysozoaNematodaChromadoreaRhabditidaRhabditoideaRhabditidaePeloderinaeCaenorhabditis
Proteomesi
  • UP000001940 Componenti: Chromosome III

Organism-specific databases

WormBaseiY75B8A.30; CE23041; WBGene00004085; pph-4.1.

Subcellular locationi

Extracellular region or secreted Cytosol Plasma membrane Cytoskeleton Lysosome Endosome Peroxisome ER Golgi apparatus Nucleus Mitochondrion Manual annotation Automatic computational assertionGraphics by Christian Stolte; Source: COMPARTMENTS

Keywords - Cellular componenti

Cytoplasm, Cytoskeleton

PTM / Processingi

Molecule processing

Feature keyPosition(s)DescriptionActionsGraphical viewLength
ChainiPRO_00003532101 – 333Serine/threonine-protein phosphatase 4 catalytic subunit 1Add BLAST333

Amino acid modifications

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Modified residuei333Leucine methyl esterBy similarity1

Post-translational modificationi

Reversibly methyl esterified on Leu-333 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

Keywords - PTMi

Methylation

Proteomic databases

EPDiQ9XW79.
PaxDbiQ9XW79.
PeptideAtlasiQ9XW79.
PRIDEiQ9XW79.

Expressioni

Gene expression databases

BgeeiWBGene00004085.

Interactioni

Subunit structurei

Serine/threonine-protein phosphatase 4 (PP4) occurs in different assemblies of the catalytic and one or more regulatory subunits.By similarity

Binary interactionsi

WithEntry#Exp.IntActNotes
ppfr-4Q9N4E93EBI-331742,EBI-331766

Protein-protein interaction databases

BioGridi41836. 8 interactors.
DIPiDIP-24807N.
IntActiQ9XW79. 8 interactors.
MINTiMINT-1045242.
STRINGi6239.Y75B8A.30.

Structurei

3D structure databases

ProteinModelPortaliQ9XW79.
SMRiQ9XW79.
ModBaseiSearch...
MobiDBiSearch...

Family & Domainsi

Sequence similaritiesi

Phylogenomic databases

eggNOGiKOG0371. Eukaryota.
COG0639. LUCA.
GeneTreeiENSGT00550000074618.
HOGENOMiHOG000172696.
InParanoidiQ9XW79.
KOiK15423.
OMAiPDRMTLI.
OrthoDBiEOG091G0B6S.
PhylomeDBiQ9XW79.

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.

Q9XW79-1 [UniParc]FASTAAdd to basket

« Hide

        10         20         30         40         50
MALACTDSAN STFSRVDSPT SGPSDQLTTH DLDRHIEKLM RCELIAEQDV
60 70 80 90 100
KTLCAKAREI LAEEGNVQVI DSPVTICGDI HGQFYDLMEL FKVGGPVPNT
110 120 130 140 150
NYLFLGDFVD RGFYSVETFL LLLALKARYP DRMMLIRGNH ESRQITQVYG
160 170 180 190 200
FYDECLRKYG NASVWKHCTE VFDYLSLAAV IDGKVFCVHG GLSPSISTMD
210 220 230 240 250
QIRVIDRKQE VPHDGPMCDL LWSDPEEGNV GWGLSPRGAG YLFGADASKT
260 270 280 290 300
FCETNGVDLI CRAHQLVMEG YKWHFNEKVL TVWSAPNYCY RCGNVAAILE
310 320 330
LDENLNKEFT IFEAAPQENR GAPAKKPHAD YFL
Length:333
Mass (Da):37,359
Last modified:November 1, 1999 - v1
Checksum:i7C7EA2177E45AA52
GO

Sequence cautioni

The sequence BAB63947 differs from that shown. Reason: Erroneous initiation.Curated

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
AB070573 mRNA. Translation: BAB63947.1. Different initiation.
AL033514 Genomic DNA. Translation: CAA22090.1.
PIRiT27390.
RefSeqiNP_499603.1. NM_067202.5.
UniGeneiCel.19352.

Genome annotation databases

EnsemblMetazoaiY75B8A.30; Y75B8A.30; WBGene00004085.
GeneIDi176657.
KEGGicel:CELE_Y75B8A.30.
UCSCiY75B8A.30. c. elegans.

Similar proteinsi

Entry informationi

Entry nameiPP4C1_CAEEL
AccessioniPrimary (citable) accession number: Q9XW79
Secondary accession number(s): Q966Q4
Entry historyiIntegrated into UniProtKB/Swiss-Prot: November 4, 2008
Last sequence update: November 1, 1999
Last modified: September 27, 2017
This is version 127 of the entry and version 1 of the sequence. See complete history.
Entry statusiReviewed (UniProtKB/Swiss-Prot)
Annotation programCaenorhabditis annotation project

Miscellaneousi

Keywords - Technical termi

Complete proteome, Reference proteome

Documents

  1. Caenorhabditis elegans
    Caenorhabditis elegans: entries, gene names and cross-references to WormBase
  2. SIMILARITY comments
    Index of protein domains and families