CABO_DORPE
ID CABO_DORPE Reviewed; 149 AA.
AC P14533;
DT 01-JAN-1990, integrated into UniProtKB/Swiss-Prot.
DT 01-JAN-1990, sequence version 1.
DT 03-AUG-2022, entry version 95.
DE RecName: Full=Squidulin;
DE AltName: Full=Optic lobe calcium-binding protein;
DE AltName: Full=SCABP;
OS Doryteuthis pealeii (Longfin inshore squid) (Loligo pealeii).
OC Eukaryota; Metazoa; Spiralia; Lophotrochozoa; Mollusca; Cephalopoda;
OC Coleoidea; Decapodiformes; Teuthida; Myopsina; Loliginidae; Doryteuthis.
OX NCBI_TaxID=1051067;
RN [1]
RP PROTEIN SEQUENCE, AND ACETYLATION AT ALA-1.
RX PubMed=2708363; DOI=10.1016/s0021-9258(18)83221-5;
RA Head J.F.;
RT "Amino acid sequence of a low molecular weight, high affinity calcium-
RT binding protein from the optic lobe of the squid Loligo pealei.";
RL J. Biol. Chem. 264:7202-7209(1989).
RN [2]
RP CALCIUM-BINDING DATA.
RX PubMed=3170550; DOI=10.1016/s0021-9258(18)68231-6;
RA Sheldon A., Head J.F.;
RT "Calcium-binding properties of two high affinity calcium-binding proteins
RT from squid optic lobe.";
RL J. Biol. Chem. 263:14384-14389(1988).
CC -!- FUNCTION: Not known. This protein has four functional calcium-binding
CC sites.
CC -!- SIMILARITY: Belongs to the calmodulin family. {ECO:0000305}.
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DR AlphaFoldDB; P14533; -.
DR SMR; P14533; -.
DR iPTMnet; P14533; -.
DR GO; GO:0005509; F:calcium ion binding; IEA:InterPro.
DR GO; GO:0019722; P:calcium-mediated signaling; IEA:InterPro.
DR CDD; cd00051; EFh; 2.
DR InterPro; IPR039030; Calmodulin.
DR InterPro; IPR011992; EF-hand-dom_pair.
DR InterPro; IPR018247; EF_Hand_1_Ca_BS.
DR InterPro; IPR002048; EF_hand_dom.
DR PANTHER; PTHR23050:SF401; PTHR23050:SF401; 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 1: Evidence at protein level;
KW Acetylation; Calcium; Direct protein sequencing; Metal-binding; Repeat.
FT CHAIN 1..149
FT /note="Squidulin"
FT /id="PRO_0000073558"
FT DOMAIN 7..42
FT /note="EF-hand 1"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00448"
FT DOMAIN 43..78
FT /note="EF-hand 2"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00448"
FT DOMAIN 80..115
FT /note="EF-hand 3"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00448"
FT DOMAIN 117..149
FT /note="EF-hand 4"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00448"
FT BINDING 20
FT /ligand="Ca(2+)"
FT /ligand_id="ChEBI:CHEBI:29108"
FT /ligand_label="1"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00448"
FT BINDING 22
FT /ligand="Ca(2+)"
FT /ligand_id="ChEBI:CHEBI:29108"
FT /ligand_label="1"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00448"
FT BINDING 24
FT /ligand="Ca(2+)"
FT /ligand_id="ChEBI:CHEBI:29108"
FT /ligand_label="1"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00448"
FT BINDING 26
FT /ligand="Ca(2+)"
FT /ligand_id="ChEBI:CHEBI:29108"
FT /ligand_label="1"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00448"
FT BINDING 31
FT /ligand="Ca(2+)"
FT /ligand_id="ChEBI:CHEBI:29108"
FT /ligand_label="1"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00448"
FT BINDING 56
FT /ligand="Ca(2+)"
FT /ligand_id="ChEBI:CHEBI:29108"
FT /ligand_label="2"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00448"
FT BINDING 58
FT /ligand="Ca(2+)"
FT /ligand_id="ChEBI:CHEBI:29108"
FT /ligand_label="2"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00448"
FT BINDING 60
FT /ligand="Ca(2+)"
FT /ligand_id="ChEBI:CHEBI:29108"
FT /ligand_label="2"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00448"
FT BINDING 62
FT /ligand="Ca(2+)"
FT /ligand_id="ChEBI:CHEBI:29108"
FT /ligand_label="2"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00448"
FT BINDING 67
FT /ligand="Ca(2+)"
FT /ligand_id="ChEBI:CHEBI:29108"
FT /ligand_label="2"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00448"
FT BINDING 93
FT /ligand="Ca(2+)"
FT /ligand_id="ChEBI:CHEBI:29108"
FT /ligand_label="3"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00448"
FT BINDING 95
FT /ligand="Ca(2+)"
FT /ligand_id="ChEBI:CHEBI:29108"
FT /ligand_label="3"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00448"
FT BINDING 97
FT /ligand="Ca(2+)"
FT /ligand_id="ChEBI:CHEBI:29108"
FT /ligand_label="3"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00448"
FT BINDING 104
FT /ligand="Ca(2+)"
FT /ligand_id="ChEBI:CHEBI:29108"
FT /ligand_label="3"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00448"
FT BINDING 130
FT /ligand="Ca(2+)"
FT /ligand_id="ChEBI:CHEBI:29108"
FT /ligand_label="4"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00448"
FT BINDING 132
FT /ligand="Ca(2+)"
FT /ligand_id="ChEBI:CHEBI:29108"
FT /ligand_label="4"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00448"
FT BINDING 134
FT /ligand="Ca(2+)"
FT /ligand_id="ChEBI:CHEBI:29108"
FT /ligand_label="4"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00448"
FT BINDING 136
FT /ligand="Ca(2+)"
FT /ligand_id="ChEBI:CHEBI:29108"
FT /ligand_label="4"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00448"
FT BINDING 141
FT /ligand="Ca(2+)"
FT /ligand_id="ChEBI:CHEBI:29108"
FT /ligand_label="4"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00448"
FT MOD_RES 1
FT /note="N-acetylalanine"
FT /evidence="ECO:0000269|PubMed:2708363"
SQ SEQUENCE 149 AA; 16852 MW; 7C565F794F18BB3A CRC64;
AKELSEKQIA EIKDAFDMFD IDGDGQITSK ELRSVMKSLG RTPSDAELEE MIREVDTDGN
GTIEYAEFVE MMAKQMGPTD PEKEMREAFR VFDKDGNGLI TAAELRQVMA NFSDEKLTSE
EISEMIREAD IDGDGMVNYE EFVKMMTPK
