ID   CA423_CONBU             Reviewed;          71 AA.
AC   P0CY78;
DT   28-JUN-2011, integrated into UniProtKB/Swiss-Prot.
DT   28-JUN-2011, sequence version 1.
DT   25-MAY-2022, entry version 21.
DE   RecName: Full=Conotoxin Bu23;
DE   Flags: Precursor;
OS   Conus bullatus (Bubble cone).
OC   Eukaryota; Metazoa; Spiralia; Lophotrochozoa; Mollusca; Gastropoda;
OC   Caenogastropoda; Neogastropoda; Conoidea; Conidae; Conus; Textilia.
OX   NCBI_TaxID=89438;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [MRNA].
RC   TISSUE=Venom duct;
RX   PubMed=21266071; DOI=10.1186/1471-2164-12-60;
RA   Hu H., Bandyopadhyay P.K., Olivera B.M., Yandell M.;
RT   "Characterization of the Conus bullatus genome and its venom-duct
RT   transcriptome.";
RL   BMC Genomics 12:60-60(2011).
CC   -!- SUBCELLULAR LOCATION: Secreted {ECO:0000250}.
CC   -!- TISSUE SPECIFICITY: Expressed by the venom duct.
CC   -!- DOMAIN: The cysteine framework is IV (CC-C-C-C-C).
CC   -!- PTM: Contains 3 disulfide bonds (By similarity). They are not indicated
CC       here, since framework IV presents two different connectivities (I-V,
CC       II-III, IV-VI and I-III, II-V, IV-VI). {ECO:0000250}.
CC   -!- SIMILARITY: Belongs to the conotoxin A superfamily. {ECO:0000305}.
CC   ---------------------------------------------------------------------------
CC   Copyrighted by the UniProt Consortium, see https://www.uniprot.org/terms
CC   Distributed under the Creative Commons Attribution (CC BY 4.0) License
CC   ---------------------------------------------------------------------------
DR   AlphaFoldDB; P0CY78; -.
DR   GO; GO:0005576; C:extracellular region; IEA:UniProtKB-SubCell.
DR   GO; GO:0030550; F:acetylcholine receptor inhibitor activity; IEA:InterPro.
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   2: Evidence at transcript level;
KW   Amidation; Disulfide bond; Ion channel impairing toxin; Neurotoxin;
KW   Secreted; Signal; Toxin.
FT   SIGNAL          1..21
FT                   /evidence="ECO:0000255"
FT   PROPEP          22..37
FT                   /evidence="ECO:0000250"
FT                   /id="PRO_0000409971"
FT   PEPTIDE         38..70
FT                   /note="Conotoxin Bu23"
FT                   /id="PRO_0000409972"
FT   MOD_RES         70
FT                   /note="Asparagine amide"
FT                   /evidence="ECO:0000250"
SQ   SEQUENCE   71 AA;  7811 MW;  8CC8E7D3095BDC4A CRC64;
     MGMRMMVTVF LLGVLATTVV SLRSNRASDG RRGIVNKLND LVPQYWTECC GRIGPHCSRC
     ICPEVVCPKN G