ID   CO2FA_CONBE             Reviewed;          87 AA.
AC   B0KZ78;
DT   02-MAR-2010, integrated into UniProtKB/Swiss-Prot.
DT   18-MAR-2008, sequence version 1.
DT   25-MAY-2022, entry version 32.
DE   RecName: Full=Conotoxin Bt15a;
DE   Flags: Precursor;
OS   Conus betulinus (Beech cone).
OC   Eukaryota; Metazoa; Spiralia; Lophotrochozoa; Mollusca; Gastropoda;
OC   Caenogastropoda; Neogastropoda; Conoidea; Conidae; Conus; Dendroconus.
OX   NCBI_TaxID=89764;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [MRNA].
RC   TISSUE=Venom duct;
RA   Jiang X., Pi C., Liu Y.;
RT   "A novel class of conotoxin cDNAs with a distinctive cysteine
RT   arrangement.";
RL   Submitted (APR-2006) to the EMBL/GenBank/DDBJ databases.
CC   -!- SUBCELLULAR LOCATION: Secreted {ECO:0000250}.
CC   -!- TISSUE SPECIFICITY: Expressed by the venom duct.
CC   -!- DOMAIN: The cysteine framework is XV (C-C-CC-C-C-C-C).
CC   -!- PTM: Contains 4 disulfide bonds. {ECO:0000250}.
CC   -!- SIMILARITY: Belongs to the conotoxin O2 superfamily. {ECO:0000305}.
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DR   EMBL; DQ512965; ABG01719.1; -; mRNA.
DR   AlphaFoldDB; B0KZ78; -.
DR   ConoServer; 2758; Bt15a precursor.
DR   GO; GO:0005576; C:extracellular region; IEA:UniProtKB-SubCell.
DR   GO; GO:0008200; F:ion channel inhibitor activity; IEA:InterPro.
DR   GO; GO:0090729; F:toxin activity; IEA:UniProtKB-KW.
DR   InterPro; IPR004214; Conotoxin.
DR   Pfam; PF02950; Conotoxin; 1.
PE   2: Evidence at transcript level;
KW   Disulfide bond; Pyrrolidone carboxylic acid; Secreted; Signal; Toxin.
FT   SIGNAL          1..23
FT                   /evidence="ECO:0000255"
FT   PROPEP          24..49
FT                   /evidence="ECO:0000250"
FT                   /id="PRO_0000392180"
FT   PEPTIDE         50..87
FT                   /note="Conotoxin Bt15a"
FT                   /id="PRO_0000392181"
FT   MOD_RES         50
FT                   /note="Pyrrolidone carboxylic acid"
FT                   /evidence="ECO:0000250"
SQ   SEQUENCE   87 AA;  9746 MW;  3CB53132A25593A0 CRC64;
     MEKLTILVLV ATVLLAIQVL VQSDGEKPLK RRVKQYAAKR LSALMRGPRQ CTPRNQRCEG
     DAECCPNLVC KCFTRPDCQS GYKCDTS