ID   PP2A_MEDSA              Reviewed;         313 AA.
AC   Q06009;
DT   01-JUN-1994, integrated into UniProtKB/Swiss-Prot.
DT   01-JUN-1994, sequence version 1.
DT   03-AUG-2022, entry version 88.
DE   RecName: Full=Serine/threonine-protein phosphatase PP2A catalytic subunit;
DE            EC=3.1.3.16;
GN   Name=PP2A;
OS   Medicago sativa (Alfalfa).
OC   Eukaryota; Viridiplantae; Streptophyta; Embryophyta; Tracheophyta;
OC   Spermatophyta; Magnoliopsida; eudicotyledons; Gunneridae; Pentapetalae;
OC   rosids; fabids; Fabales; Fabaceae; Papilionoideae; 50 kb inversion clade;
OC   NPAAA clade; Hologalegina; IRL clade; Trifolieae; Medicago.
OX   NCBI_TaxID=3879;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [MRNA].
RX   PubMed=8393512; DOI=10.1007/bf00276891;
RA   Pirck M., Pay A., Heberle-Bors E., Hirt H.;
RT   "Isolation and characterization of a phosphoprotein phosphatase type 2A
RT   gene from alfalfa.";
RL   Mol. Gen. Genet. 240:126-131(1993).
CC   -!- FUNCTION: May play a role in cell cycle regulation.
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   -!- TISSUE SPECIFICITY: Predominantly expressed in stems, moderate in
CC       roots, nodes, leaves and flower buds.
CC   -!- SIMILARITY: Belongs to the PPP phosphatase family. PP-2A subfamily.
CC       {ECO:0000305}.
CC   ---------------------------------------------------------------------------
CC   Copyrighted by the UniProt Consortium, see https://www.uniprot.org/terms
CC   Distributed under the Creative Commons Attribution (CC BY 4.0) License
CC   ---------------------------------------------------------------------------
DR   EMBL; X70399; CAA49849.1; -; mRNA.
DR   PIR; S35502; S35502.
DR   AlphaFoldDB; Q06009; -.
DR   SMR; Q06009; -.
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:0007049; P:cell cycle; IEA:UniProtKB-KW.
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   Pfam; PF00149; Metallophos; 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   Cell cycle; Hydrolase; Manganese; Metal-binding; Protein phosphatase.
FT   CHAIN           1..313
FT                   /note="Serine/threonine-protein phosphatase PP2A catalytic
FT                   subunit"
FT                   /id="PRO_0000058860"
FT   ACT_SITE        122
FT                   /note="Proton donor"
FT                   /evidence="ECO:0000250"
FT   BINDING         61
FT                   /ligand="Mn(2+)"
FT                   /ligand_id="ChEBI:CHEBI:29035"
FT                   /ligand_label="1"
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         89
FT                   /ligand="Mn(2+)"
FT                   /ligand_id="ChEBI:CHEBI:29035"
FT                   /ligand_label="1"
FT                   /evidence="ECO:0000250"
FT   BINDING         89
FT                   /ligand="Mn(2+)"
FT                   /ligand_id="ChEBI:CHEBI:29035"
FT                   /ligand_label="2"
FT                   /evidence="ECO:0000250"
FT   BINDING         121
FT                   /ligand="Mn(2+)"
FT                   /ligand_id="ChEBI:CHEBI:29035"
FT                   /ligand_label="2"
FT                   /evidence="ECO:0000250"
FT   BINDING         171
FT                   /ligand="Mn(2+)"
FT                   /ligand_id="ChEBI:CHEBI:29035"
FT                   /ligand_label="2"
FT                   /evidence="ECO:0000250"
FT   BINDING         245
FT                   /ligand="Mn(2+)"
FT                   /ligand_id="ChEBI:CHEBI:29035"
FT                   /ligand_label="2"
FT                   /evidence="ECO:0000250"
SQ   SEQUENCE   313 AA;  35711 MW;  08230261A0110431 CRC64;
     MGANSMIADV THDLNEQISQ LMQCKPLSEQ QVKELCEKAK EILMDESNVQ PVKSPVTICG
     DIHGQFHDLA ELFRIGGKCP DTNYLFMGDY VDRGYYSVET VTLLVALKVR YPQRITILRG
     NHESRQITQV YGFYDECLRK YGSANVWKIF TDLFDFFPLT ALVESEIFCL HGGLSPSIET
     LDNIRNFDRV QEVPHEGPMC DLLWSDPDDR CGWGISPRGA GYTFGQDISE QFNHTNSLKL
     IARAHQLVMD GFNWAHEQKV VTIFSAPNYC YRCGNMASIL EVDDCKGHTF IQFEPAPRRG
     EPDVTRRTPD YFL