ID   CA11_CONCB              Reviewed;          62 AA.
AC   P0C1V9;
DT   19-SEP-2006, integrated into UniProtKB/Swiss-Prot.
DT   19-SEP-2006, sequence version 1.
DT   25-MAY-2022, entry version 43.
DE   RecName: Full=Alpha-conotoxin-like Ca1.1;
DE   Flags: Precursor;
OS   Conus caracteristicus (Characteristic cone).
OC   Eukaryota; Metazoa; Spiralia; Lophotrochozoa; Mollusca; Gastropoda;
OC   Caenogastropoda; Neogastropoda; Conoidea; Conidae; Conus.
OX   NCBI_TaxID=89440;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [MRNA].
RC   TISSUE=Venom duct;
RX   PubMed=14701840; DOI=10.1074/jbc.m309654200;
RA   Santos A.D., McIntosh J.M., Hillyard D.R., Cruz L.J., Olivera B.M.;
RT   "The A-superfamily of conotoxins: structural and functional divergence.";
RL   J. Biol. Chem. 279:17596-17606(2004).
CC   -!- FUNCTION: Alpha-conotoxins act on postsynaptic membranes, they bind to
CC       the nicotinic acetylcholine receptors (nAChR) and thus inhibit them.
CC       {ECO:0000250}.
CC   -!- SUBCELLULAR LOCATION: Secreted {ECO:0000305}.
CC   -!- TISSUE SPECIFICITY: Expressed by the venom duct.
CC       {ECO:0000305|PubMed:14701840}.
CC   -!- DOMAIN: The cysteine framework is I (CC-C-C). Alpha4/5 pattern.
CC       {ECO:0000305}.
CC   -!- SIMILARITY: Belongs to the conotoxin A superfamily. {ECO:0000305}.
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DR   AlphaFoldDB; P0C1V9; -.
DR   ConoServer; 11; Ca1.1 precursor.
DR   GO; GO:0005576; C:extracellular region; IEA:UniProtKB-SubCell.
DR   GO; GO:0035792; C:host cell postsynaptic membrane; IEA:UniProtKB-KW.
DR   GO; GO:0030550; F:acetylcholine receptor inhibitor activity; IEA:UniProtKB-KW.
DR   GO; GO:0099106; F:ion channel regulator activity; IEA:UniProtKB-KW.
DR   GO; GO:0090729; F:toxin activity; IEA:UniProtKB-KW.
DR   InterPro; IPR009958; Conotoxin_a-typ.
DR   Pfam; PF07365; Toxin_8; 1.
PE   3: Inferred from homology;
KW   Acetylcholine receptor inhibiting toxin; Disulfide bond;
KW   Ion channel impairing toxin; Neurotoxin; Postsynaptic neurotoxin;
KW   Pyrrolidone carboxylic acid; Secreted; Signal; Toxin.
FT   SIGNAL          1..21
FT                   /evidence="ECO:0000255"
FT   PROPEP          22..46
FT                   /evidence="ECO:0000250"
FT                   /id="PRO_0000249783"
FT   PEPTIDE         47..62
FT                   /note="Alpha-conotoxin-like Ca1.1"
FT                   /id="PRO_0000249784"
FT   MOD_RES         47
FT                   /note="Pyrrolidone carboxylic acid"
FT                   /evidence="ECO:0000250"
FT   DISULFID        49..55
FT                   /evidence="ECO:0000250|UniProtKB:P69657"
FT   DISULFID        50..61
FT                   /evidence="ECO:0000250|UniProtKB:P69657"
SQ   SEQUENCE   62 AA;  6827 MW;  E69421E6628C56BC CRC64;
     MGMRMMFTVF LLVVLATTVV SFTSDRASDG RNAAANAFDL IALIARQNCC SIPSCWEKYK
     CS