ID   O16C_CONVC              Reviewed;          77 AA.
AC   P69762;
DT   26-APR-2005, integrated into UniProtKB/Swiss-Prot.
DT   26-APR-2005, sequence version 1.
DT   25-MAY-2022, entry version 41.
DE   RecName: Full=Conotoxin Vc6c;
DE   AltName: Full=Vc6.5;
DE   Flags: Precursor;
OS   Conus victoriae (Queen Victoria cone).
OC   Eukaryota; Metazoa; Spiralia; Lophotrochozoa; Mollusca; Gastropoda;
OC   Caenogastropoda; Neogastropoda; Conoidea; Conidae; Conus; Cylinder.
OX   NCBI_TaxID=319920;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [MRNA].
RC   TISSUE=Venom duct;
RX   PubMed=15170751; DOI=10.1002/jms.624;
RA   Jakubowski J.A., Keays D.A., Kelley W.P., Sandall D.W., Bingham J.-P.,
RA   Livett B.G., Gayler K.R., Sweedler J.V.;
RT   "Determining sequences and post-translational modifications of novel
RT   conotoxins in Conus victoriae using cDNA sequencing and mass
RT   spectrometry.";
RL   J. Mass Spectrom. 39:548-557(2004).
RN   [2]
RP   MASS SPECTROMETRY.
RC   TISSUE=Venom;
RX   PubMed=15538774; DOI=10.1021/ac0494376;
RA   Jakubowski J.A., Sweedler J.V.;
RT   "Sequencing and mass profiling highly modified conotoxins using global
RT   reduction/alkylation followed by mass spectrometry.";
RL   Anal. Chem. 76:6541-6547(2004).
CC   -!- SUBCELLULAR LOCATION: Secreted.
CC   -!- TISSUE SPECIFICITY: Expressed by the venom duct.
CC   -!- DOMAIN: The presence of a 'disulfide through disulfide knot'
CC       structurally defines this protein as a knottin. {ECO:0000250}.
CC   -!- DOMAIN: The cysteine framework is VI/VII (C-C-CC-C-C).
CC   -!- MASS SPECTROMETRY: Mass=2975.2; Method=Electrospray;
CC       Evidence={ECO:0000269|PubMed:15538774};
CC   -!- SIMILARITY: Belongs to the conotoxin O1 superfamily. {ECO:0000305}.
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DR   AlphaFoldDB; P69762; -.
DR   ConoServer; 1398; VcVIC 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   1: Evidence at protein level;
KW   Cleavage on pair of basic residues; Disulfide bond;
KW   Ion channel impairing toxin; Knottin; Neurotoxin; Secreted; Signal; Toxin.
FT   SIGNAL          1..22
FT                   /evidence="ECO:0000255"
FT   PROPEP          23..51
FT                   /evidence="ECO:0000250"
FT                   /id="PRO_0000034974"
FT   PEPTIDE         52..77
FT                   /note="Conotoxin Vc6c"
FT                   /id="PRO_0000034975"
FT   DISULFID        52..67
FT                   /evidence="ECO:0000250"
FT   DISULFID        59..71
FT                   /evidence="ECO:0000250"
FT   DISULFID        66..76
FT                   /evidence="ECO:0000250"
SQ   SEQUENCE   77 AA;  8570 MW;  33B5FF09ECE66295 CRC64;
     MKLTCMVIVA VLFLTANTFV TADDSGNGLE NLFSKAHHEI KNPEASNLNK RCIPFLHPCT
     FFFPDCCNSI CAQFICL