ID   CS83_CONCB              Reviewed;          88 AA.
AC   B2CJ87;
DT   02-SEP-2008, integrated into UniProtKB/Swiss-Prot.
DT   20-MAY-2008, sequence version 1.
DT   25-MAY-2022, entry version 24.
DE   RecName: Full=Conotoxin Ca8.3;
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=18423793; DOI=10.1016/j.toxicon.2008.03.001;
RA   Liu L., Wu X., Yuan D., Chi C., Wang C.;
RT   "Identification of a novel S-superfamily conotoxin from vermivorous Conus
RT   caracteristicus.";
RL   Toxicon 51:1331-1337(2008).
CC   -!- SUBCELLULAR LOCATION: Secreted {ECO:0000250}.
CC   -!- TISSUE SPECIFICITY: Expressed by the venom duct.
CC   -!- DOMAIN: The cysteine framework is VIII (C-C-C-C-C-C-C-C-C-C).
CC   -!- PTM: Contains 5 disulfide bonds. {ECO:0000305}.
CC   -!- SIMILARITY: Belongs to the conotoxin S superfamily. {ECO:0000305}.
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DR   EMBL; EU516351; ACB45451.1; -; mRNA.
DR   AlphaFoldDB; B2CJ87; -.
DR   ConoServer; 2827; Ca8c precursor.
DR   GO; GO:0005576; C:extracellular region; IEA:UniProtKB-SubCell.
DR   GO; GO:0090729; F:toxin activity; IEA:UniProtKB-KW.
PE   2: Evidence at transcript level;
KW   Disulfide bond; Neurotoxin; Secreted; Signal; Toxin.
FT   SIGNAL          1..21
FT                   /evidence="ECO:0000255"
FT   PROPEP          22..46
FT                   /evidence="ECO:0000250"
FT                   /id="PRO_0000346137"
FT   PEPTIDE         47..88
FT                   /note="Conotoxin Ca8.3"
FT                   /id="PRO_0000346138"
SQ   SEQUENCE   88 AA;  9788 MW;  E18983FA6E5B3E31 CRC64;
     MMLKMGAMFV LLLLFILPSS QQEGDVQARK THLKSGFYGT LAMSTRGCSG TCRRHRDGKC
     RGTCECSGYS YCRCGDAHHF YRGCTCTC