CANB2_BOVIN
ID CANB2_BOVIN Reviewed; 170 AA.
AC Q2TBI5;
DT 31-OCT-2006, integrated into UniProtKB/Swiss-Prot.
DT 23-JAN-2007, sequence version 3.
DT 03-AUG-2022, entry version 83.
DE RecName: Full=Calcineurin subunit B type 2;
DE AltName: Full=Protein phosphatase 2B regulatory subunit 2;
DE AltName: Full=Protein phosphatase 3 regulatory subunit B beta isoform;
GN Name=PPP3R2;
OS Bos taurus (Bovine).
OC Eukaryota; Metazoa; Chordata; Craniata; Vertebrata; Euteleostomi; Mammalia;
OC Eutheria; Laurasiatheria; Artiodactyla; Ruminantia; Pecora; Bovidae;
OC Bovinae; Bos.
OX NCBI_TaxID=9913;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE MRNA].
RC STRAIN=Crossbred X Angus; TISSUE=Liver;
RG NIH - Mammalian Gene Collection (MGC) project;
RL Submitted (NOV-2005) to the EMBL/GenBank/DDBJ databases.
CC -!- FUNCTION: Regulatory subunit of calcineurin, a calcium-dependent,
CC calmodulin stimulated protein phosphatase. Confers calcium sensitivity.
CC {ECO:0000250|UniProtKB:P63099}.
CC -!- SUBUNIT: Forms a complex composed of a calmodulin-dependent catalytic
CC subunit (also known as calcineurin A) and a regulatory Ca(2+)-binding
CC subunit (also known as calcineurin B). There are three catalytic
CC subunits, each encoded by a separate gene (PPP3CA, PPP3CB, and PPP3CC)
CC and two regulatory subunits which are also encoded by separate genes
CC (PPP3R1 and PPP3R2) (By similarity). Interacts with SPATA33 (via PQIIIT
CC motif) (By similarity). {ECO:0000250|UniProtKB:P63099,
CC ECO:0000250|UniProtKB:Q63811}.
CC -!- SUBCELLULAR LOCATION: Mitochondrion {ECO:0000250|UniProtKB:Q63811}.
CC Note=Localizes in the mitochondria in a SPATA33-dependent manner.
CC {ECO:0000250|UniProtKB:Q63811}.
CC -!- MISCELLANEOUS: This protein has four functional calcium-binding sites.
CC {ECO:0000250|UniProtKB:P63099}.
CC -!- SIMILARITY: Belongs to the calcineurin regulatory subunit family.
CC {ECO:0000305}.
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DR EMBL; BC110140; AAI10141.1; -; mRNA.
DR RefSeq; NP_001073099.1; NM_001079631.2.
DR AlphaFoldDB; Q2TBI5; -.
DR SMR; Q2TBI5; -.
DR GeneID; 617585; -.
DR KEGG; bta:617585; -.
DR CTD; 5535; -.
DR InParanoid; Q2TBI5; -.
DR OrthoDB; 1271942at2759; -.
DR Proteomes; UP000009136; Unplaced.
DR GO; GO:0005955; C:calcineurin complex; IBA:GO_Central.
DR GO; GO:0005739; C:mitochondrion; IEA:UniProtKB-SubCell.
DR GO; GO:0005509; F:calcium ion binding; IEA:InterPro.
DR GO; GO:0008597; F:calcium-dependent protein serine/threonine phosphatase regulator activity; IBA:GO_Central.
DR GO; GO:0019902; F:phosphatase binding; IBA:GO_Central.
DR GO; GO:0097720; P:calcineurin-mediated signaling; IBA:GO_Central.
DR GO; GO:0006470; P:protein dephosphorylation; IBA:GO_Central.
DR CDD; cd00051; EFh; 1.
DR InterPro; IPR015757; Calcineur_B.
DR InterPro; IPR011992; EF-hand-dom_pair.
DR InterPro; IPR018247; EF_Hand_1_Ca_BS.
DR InterPro; IPR002048; EF_hand_dom.
DR PANTHER; PTHR45942; PTHR45942; 1.
DR Pfam; PF13202; EF-hand_5; 1.
DR Pfam; PF13499; EF-hand_7; 1.
DR SMART; SM00054; EFh; 4.
DR SUPFAM; SSF47473; SSF47473; 1.
DR PROSITE; PS00018; EF_HAND_1; 3.
DR PROSITE; PS50222; EF_HAND_2; 4.
PE 2: Evidence at transcript level;
KW Calcium; Lipoprotein; Metal-binding; Mitochondrion; Myristate;
KW Reference proteome; Repeat.
FT INIT_MET 1
FT /note="Removed"
FT CHAIN 2..170
FT /note="Calcineurin subunit B type 2"
FT /id="PRO_0000254660"
FT DOMAIN 18..46
FT /note="EF-hand 1"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00448"
FT DOMAIN 50..85
FT /note="EF-hand 2"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00448"
FT DOMAIN 87..122
FT /note="EF-hand 3"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00448"
FT DOMAIN 128..163
FT /note="EF-hand 4"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00448"
FT REGION 131..136
FT /note="Calcineurin A binding"
FT /evidence="ECO:0000250|UniProtKB:P63099"
FT BINDING 63
FT /ligand="Ca(2+)"
FT /ligand_id="ChEBI:CHEBI:29108"
FT /ligand_label="1"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00448"
FT BINDING 65
FT /ligand="Ca(2+)"
FT /ligand_id="ChEBI:CHEBI:29108"
FT /ligand_label="1"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00448"
FT BINDING 67
FT /ligand="Ca(2+)"
FT /ligand_id="ChEBI:CHEBI:29108"
FT /ligand_label="1"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00448"
FT BINDING 69
FT /ligand="Ca(2+)"
FT /ligand_id="ChEBI:CHEBI:29108"
FT /ligand_label="1"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00448"
FT BINDING 74
FT /ligand="Ca(2+)"
FT /ligand_id="ChEBI:CHEBI:29108"
FT /ligand_label="1"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00448"
FT BINDING 100
FT /ligand="Ca(2+)"
FT /ligand_id="ChEBI:CHEBI:29108"
FT /ligand_label="2"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00448"
FT BINDING 102
FT /ligand="Ca(2+)"
FT /ligand_id="ChEBI:CHEBI:29108"
FT /ligand_label="2"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00448"
FT BINDING 104
FT /ligand="Ca(2+)"
FT /ligand_id="ChEBI:CHEBI:29108"
FT /ligand_label="2"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00448"
FT BINDING 106
FT /ligand="Ca(2+)"
FT /ligand_id="ChEBI:CHEBI:29108"
FT /ligand_label="2"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00448"
FT BINDING 111
FT /ligand="Ca(2+)"
FT /ligand_id="ChEBI:CHEBI:29108"
FT /ligand_label="2"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00448"
FT BINDING 141
FT /ligand="Ca(2+)"
FT /ligand_id="ChEBI:CHEBI:29108"
FT /ligand_label="3"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00448"
FT BINDING 143
FT /ligand="Ca(2+)"
FT /ligand_id="ChEBI:CHEBI:29108"
FT /ligand_label="3"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00448"
FT BINDING 145
FT /ligand="Ca(2+)"
FT /ligand_id="ChEBI:CHEBI:29108"
FT /ligand_label="3"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00448"
FT BINDING 147
FT /ligand="Ca(2+)"
FT /ligand_id="ChEBI:CHEBI:29108"
FT /ligand_label="3"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00448"
FT BINDING 152
FT /ligand="Ca(2+)"
FT /ligand_id="ChEBI:CHEBI:29108"
FT /ligand_label="3"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00448"
FT SITE 118
FT /note="Interaction with PxVP motif in substrates of the
FT catalytic subunit"
FT /evidence="ECO:0000250|UniProtKB:P63098"
FT SITE 122
FT /note="Interaction with PxVP motif in substrates of the
FT catalytic subunit"
FT /evidence="ECO:0000250|UniProtKB:P63098"
FT LIPID 2
FT /note="N-myristoyl glycine"
FT /evidence="ECO:0000250|UniProtKB:P63099"
SQ SEQUENCE 170 AA; 19548 MW; 5C02D5FDC6DA0DB5 CRC64;
MGNEASYPAE ICSHFDEDEI KRLRKRFKKL DLDSSSALSV KEFTSMPELQ ENPLVQRVID
VFDTDGDGQV DFREFILGTS QFSVRGDEEQ KLRFAFSIYD MDKDGYISNG ELFQVLKMMV
GDNLKDWQLQ QLVDKTIILL DKDGDGKISF QEFSAVVRSL EIHKHLVTIV
