PP1B_XENTR
ID PP1B_XENTR Reviewed; 327 AA.
AC Q5I085;
DT 10-JUL-2007, integrated into UniProtKB/Swiss-Prot.
DT 15-FEB-2005, sequence version 1.
DT 03-AUG-2022, entry version 86.
DE RecName: Full=Serine/threonine-protein phosphatase PP1-beta catalytic subunit;
DE Short=PP-1B;
DE EC=3.1.3.16;
GN Name=ppp1cb; ORFNames=TEgg049h05.1;
OS Xenopus tropicalis (Western clawed frog) (Silurana tropicalis).
OC Eukaryota; Metazoa; Chordata; Craniata; Vertebrata; Euteleostomi; Amphibia;
OC Batrachia; Anura; Pipoidea; Pipidae; Xenopodinae; Xenopus; Silurana.
OX NCBI_TaxID=8364;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE MRNA].
RC TISSUE=Egg;
RG Sanger Xenopus tropicalis EST/cDNA project;
RL Submitted (OCT-2006) to the EMBL/GenBank/DDBJ databases.
RN [2]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE MRNA].
RC TISSUE=Neurula;
RG NIH - Xenopus Gene Collection (XGC) project;
RL Submitted (DEC-2004) to the EMBL/GenBank/DDBJ databases.
CC -!- FUNCTION: Protein phosphatase that associates with over 200 regulatory
CC proteins to form highly specific holoenzymes which dephosphorylate
CC hundreds of biological targets. Protein phosphatase (PP1) is essential
CC for cell division, it participates in the regulation of glycogen
CC metabolism, muscle contractility and protein synthesis. Involved in
CC regulation of ionic conductances and long-term synaptic plasticity (By
CC similarity). {ECO:0000250}.
CC -!- CATALYTIC ACTIVITY:
CC Reaction=H2O + O-phospho-L-seryl-[protein] = L-seryl-[protein] +
CC phosphate; Xref=Rhea:RHEA:20629, Rhea:RHEA-COMP:9863, Rhea:RHEA-
CC COMP:11604, ChEBI:CHEBI:15377, ChEBI:CHEBI:29999, ChEBI:CHEBI:43474,
CC ChEBI:CHEBI:83421; EC=3.1.3.16;
CC -!- CATALYTIC ACTIVITY:
CC Reaction=H2O + O-phospho-L-threonyl-[protein] = L-threonyl-[protein] +
CC phosphate; Xref=Rhea:RHEA:47004, Rhea:RHEA-COMP:11060, Rhea:RHEA-
CC COMP:11605, ChEBI:CHEBI:15377, ChEBI:CHEBI:30013, ChEBI:CHEBI:43474,
CC ChEBI:CHEBI:61977; EC=3.1.3.16;
CC -!- COFACTOR:
CC Name=Mn(2+); Xref=ChEBI:CHEBI:29035; Evidence={ECO:0000250};
CC Note=Binds 2 manganese ions per subunit. {ECO:0000250};
CC -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000250}. Nucleus {ECO:0000250}.
CC -!- SIMILARITY: Belongs to the PPP phosphatase family. PP-1 subfamily.
CC {ECO:0000305}.
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DR EMBL; CR760533; CAJ81891.1; -; mRNA.
DR EMBL; BC088594; AAH88594.1; -; mRNA.
DR RefSeq; NP_001011467.1; NM_001011467.1.
DR AlphaFoldDB; Q5I085; -.
DR SMR; Q5I085; -.
DR STRING; 8364.ENSXETP00000021336; -.
DR Ensembl; ENSXETT00000098265; ENSXETP00000077905; ENSXETG00000010214.
DR GeneID; 496958; -.
DR KEGG; xtr:496958; -.
DR CTD; 5500; -.
DR Xenbase; XB-GENE-961670; ppp1cb.
DR InParanoid; Q5I085; -.
DR OrthoDB; 766640at2759; -.
DR Reactome; R-XTR-2565942; Regulation of PLK1 Activity at G2/M Transition.
DR Reactome; R-XTR-5625740; RHO GTPases activate PKNs.
DR Proteomes; UP000008143; Chromosome 5.
DR Proteomes; UP000790000; Unplaced.
DR Bgee; ENSXETG00000010214; Expressed in skeletal muscle tissue and 17 other tissues.
DR ExpressionAtlas; Q5I085; baseline.
DR GO; GO:0005737; C:cytoplasm; IBA:GO_Central.
DR GO; GO:0005634; C:nucleus; IBA:GO_Central.
DR GO; GO:0072357; C:PTW/PP1 phosphatase complex; ISS:UniProtKB.
DR GO; GO:0046872; F:metal ion binding; IEA:UniProtKB-KW.
DR GO; GO:0017018; F:myosin phosphatase activity; IEA:UniProtKB-EC.
DR GO; GO:0050115; F:myosin-light-chain-phosphatase activity; ISS:UniProtKB.
DR GO; GO:0004722; F:protein serine/threonine phosphatase activity; IBA:GO_Central.
DR GO; GO:0007049; P:cell cycle; IEA:UniProtKB-KW.
DR GO; GO:0051301; P:cell division; IEA:UniProtKB-KW.
DR GO; GO:0032922; P:circadian regulation of gene expression; IBA:GO_Central.
DR GO; GO:0005977; P:glycogen metabolic process; IEA:UniProtKB-KW.
DR GO; GO:0030155; P:regulation of cell adhesion; ISS:UniProtKB.
DR GO; GO:0042752; P:regulation of circadian rhythm; IBA:GO_Central.
DR Gene3D; 3.60.21.10; -; 1.
DR InterPro; IPR004843; Calcineurin-like_PHP_ApaH.
DR InterPro; IPR029052; Metallo-depent_PP-like.
DR InterPro; IPR006186; Ser/Thr-sp_prot-phosphatase.
DR InterPro; IPR031675; STPPase_N.
DR Pfam; PF00149; Metallophos; 1.
DR Pfam; PF16891; STPPase_N; 1.
DR PRINTS; PR00114; STPHPHTASE.
DR SMART; SM00156; PP2Ac; 1.
DR SUPFAM; SSF56300; SSF56300; 1.
DR PROSITE; PS00125; SER_THR_PHOSPHATASE; 1.
PE 2: Evidence at transcript level;
KW Acetylation; Carbohydrate metabolism; Cell cycle; Cell division; Cytoplasm;
KW Glycogen metabolism; Hydrolase; Manganese; Metal-binding; Nucleus;
KW Protein phosphatase; Reference proteome.
FT INIT_MET 1
FT /note="Removed"
FT /evidence="ECO:0000250"
FT CHAIN 2..327
FT /note="Serine/threonine-protein phosphatase PP1-beta
FT catalytic subunit"
FT /id="PRO_0000293480"
FT REGION 305..327
FT /note="Disordered"
FT /evidence="ECO:0000256|SAM:MobiDB-lite"
FT ACT_SITE 124
FT /note="Proton donor"
FT /evidence="ECO:0000250"
FT BINDING 63
FT /ligand="Mn(2+)"
FT /ligand_id="ChEBI:CHEBI:29035"
FT /ligand_label="1"
FT /evidence="ECO:0000250"
FT BINDING 65
FT /ligand="Mn(2+)"
FT /ligand_id="ChEBI:CHEBI:29035"
FT /ligand_label="1"
FT /evidence="ECO:0000250"
FT BINDING 91
FT /ligand="Mn(2+)"
FT /ligand_id="ChEBI:CHEBI:29035"
FT /ligand_label="1"
FT /evidence="ECO:0000250"
FT BINDING 91
FT /ligand="Mn(2+)"
FT /ligand_id="ChEBI:CHEBI:29035"
FT /ligand_label="2"
FT /evidence="ECO:0000250"
FT BINDING 123
FT /ligand="Mn(2+)"
FT /ligand_id="ChEBI:CHEBI:29035"
FT /ligand_label="2"
FT /evidence="ECO:0000250"
FT BINDING 172
FT /ligand="Mn(2+)"
FT /ligand_id="ChEBI:CHEBI:29035"
FT /ligand_label="2"
FT /evidence="ECO:0000250"
FT BINDING 247
FT /ligand="Mn(2+)"
FT /ligand_id="ChEBI:CHEBI:29035"
FT /ligand_label="2"
FT /evidence="ECO:0000250"
FT MOD_RES 2
FT /note="N-acetylalanine"
FT /evidence="ECO:0000250"
SQ SEQUENCE 327 AA; 37173 MW; F337A83332B89705 CRC64;
MADGELNVDS LISRLLEVRG CRPGKIVQMT EAEVRGLCIK SREIFLSQPI LLELEAPLKI
CGDIHGQYTD LLRLFEYGGF PPEANYLFLG DYVDRGKQSL ETICLLLAYK IKYPENFFLL
RGNHECASIN RIYGFYDECK RRFNIKLWKT FTDCFNCLPI AAIVDEKIFC CHGGLSPDLQ
SMEQIRRIMR PTDVPDTGLL CDLLWSDPDK DVQGWGENDR GVSFTFGADV VSKFLNRHDL
DLICRAHQVV EDGYEFFAKR QLVTLFSAPN YCGEFDNAGG MMSVDETLMC SFQILKPSEK
KAKYQYGGLN SGRPVTPPRT ANPPKKR
