CANB1_NAEGR
ID CANB1_NAEGR Reviewed; 177 AA.
AC P42322;
DT 01-NOV-1995, integrated into UniProtKB/Swiss-Prot.
DT 01-NOV-1995, sequence version 1.
DT 03-AUG-2022, entry version 104.
DE RecName: Full=Calcineurin subunit B;
DE AltName: Full=Calcineurin regulatory subunit;
DE AltName: Full=Protein phosphatase 2B regulatory subunit;
GN Name=CNB1;
OS Naegleria gruberi (Amoeba).
OC Eukaryota; Discoba; Heterolobosea; Tetramitia; Eutetramitia;
OC Vahlkampfiidae; Naegleria.
OX NCBI_TaxID=5762;
RN [1]
RP NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RC STRAIN=ATCC 30223 / NEG;
RX PubMed=7867946; DOI=10.1016/0378-1119(94)00860-u;
RA Remillard S.P., Lai E.Y., Levy Y.Y., Fulton C.;
RT "A calcineurin-B-encoding gene expressed during differentiation of the
RT amoeboflagellate Naegleria gruberi contains two introns.";
RL Gene 154:39-45(1995).
CC -!- FUNCTION: Regulatory subunit of calcineurin, a calcium-dependent,
CC calmodulin stimulated protein phosphatase. Confers calcium sensitivity
CC (By similarity). {ECO:0000250}.
CC -!- SUBUNIT: Composed of a catalytic subunit (A) and a regulatory subunit
CC (B). {ECO:0000250}.
CC -!- MISCELLANEOUS: This protein has four functional calcium-binding sites.
CC {ECO:0000250}.
CC -!- SIMILARITY: Belongs to the calcineurin regulatory subunit family.
CC {ECO:0000305}.
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DR EMBL; U04380; AAA81896.1; -; Genomic_DNA.
DR AlphaFoldDB; P42322; -.
DR SMR; P42322; -.
DR STRING; 5762.XP_002680632.1; -.
DR KEGG; ngr:NAEGRDRAFT_35722; -.
DR VEuPathDB; AmoebaDB:NAEGRDRAFT_35722; -.
DR eggNOG; KOG0034; Eukaryota.
DR OMA; DTNFDRD; -.
DR GO; GO:0005509; F:calcium ion binding; IEA:InterPro.
DR GO; GO:0008597; F:calcium-dependent protein serine/threonine phosphatase regulator activity; IEA:InterPro.
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; PF13499; EF-hand_7; 2.
DR SMART; SM00054; EFh; 4.
DR SUPFAM; SSF47473; SSF47473; 1.
DR PROSITE; PS00018; EF_HAND_1; 4.
DR PROSITE; PS50222; EF_HAND_2; 4.
PE 3: Inferred from homology;
KW Calcium; Metal-binding; Repeat.
FT CHAIN 1..177
FT /note="Calcineurin subunit B"
FT /id="PRO_0000073487"
FT DOMAIN 25..60
FT /note="EF-hand 1"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00448"
FT DOMAIN 62..92
FT /note="EF-hand 2"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00448"
FT DOMAIN 94..129
FT /note="EF-hand 3"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00448"
FT DOMAIN 135..170
FT /note="EF-hand 4"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00448"
FT BINDING 38
FT /ligand="Ca(2+)"
FT /ligand_id="ChEBI:CHEBI:29108"
FT /ligand_label="1"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00448"
FT BINDING 40
FT /ligand="Ca(2+)"
FT /ligand_id="ChEBI:CHEBI:29108"
FT /ligand_label="1"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00448"
FT BINDING 42
FT /ligand="Ca(2+)"
FT /ligand_id="ChEBI:CHEBI:29108"
FT /ligand_label="1"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00448"
FT BINDING 44
FT /ligand="Ca(2+)"
FT /ligand_id="ChEBI:CHEBI:29108"
FT /ligand_label="1"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00448"
FT BINDING 49
FT /ligand="Ca(2+)"
FT /ligand_id="ChEBI:CHEBI:29108"
FT /ligand_label="1"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00448"
FT BINDING 70
FT /ligand="Ca(2+)"
FT /ligand_id="ChEBI:CHEBI:29108"
FT /ligand_label="2"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00448"
FT BINDING 72
FT /ligand="Ca(2+)"
FT /ligand_id="ChEBI:CHEBI:29108"
FT /ligand_label="2"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00448"
FT BINDING 74
FT /ligand="Ca(2+)"
FT /ligand_id="ChEBI:CHEBI:29108"
FT /ligand_label="2"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00448"
FT BINDING 76
FT /ligand="Ca(2+)"
FT /ligand_id="ChEBI:CHEBI:29108"
FT /ligand_label="2"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00448"
FT BINDING 81
FT /ligand="Ca(2+)"
FT /ligand_id="ChEBI:CHEBI:29108"
FT /ligand_label="2"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00448"
FT BINDING 107
FT /ligand="Ca(2+)"
FT /ligand_id="ChEBI:CHEBI:29108"
FT /ligand_label="3"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00448"
FT BINDING 109
FT /ligand="Ca(2+)"
FT /ligand_id="ChEBI:CHEBI:29108"
FT /ligand_label="3"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00448"
FT BINDING 111
FT /ligand="Ca(2+)"
FT /ligand_id="ChEBI:CHEBI:29108"
FT /ligand_label="3"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00448"
FT BINDING 113
FT /ligand="Ca(2+)"
FT /ligand_id="ChEBI:CHEBI:29108"
FT /ligand_label="3"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00448"
FT BINDING 118
FT /ligand="Ca(2+)"
FT /ligand_id="ChEBI:CHEBI:29108"
FT /ligand_label="3"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00448"
FT BINDING 148
FT /ligand="Ca(2+)"
FT /ligand_id="ChEBI:CHEBI:29108"
FT /ligand_label="4"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00448"
FT BINDING 150
FT /ligand="Ca(2+)"
FT /ligand_id="ChEBI:CHEBI:29108"
FT /ligand_label="4"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00448"
FT BINDING 152
FT /ligand="Ca(2+)"
FT /ligand_id="ChEBI:CHEBI:29108"
FT /ligand_label="4"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00448"
FT BINDING 154
FT /ligand="Ca(2+)"
FT /ligand_id="ChEBI:CHEBI:29108"
FT /ligand_label="4"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00448"
FT BINDING 159
FT /ligand="Ca(2+)"
FT /ligand_id="ChEBI:CHEBI:29108"
FT /ligand_label="4"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00448"
SQ SEQUENCE 177 AA; 20057 MW; 01D4A48E6947E97C CRC64;
MGTNTSSLRP EEVEEMQKGT NFTQKEIKKL YKRFKKLDKD GNGTISKDEF LMIPELAVNP
LVKRVISIFD ENGDGSVNFK EFIAALSVFN AQGDKQRKLE FAFKVYDIDG DGYISNGELF
TVLKMMVGNN LSDVQLQQIV DKTILEADED GDGKISFEEF AKTLSHQDLE NKMTIRL
