ID   M3E_CONTE               Reviewed;          17 AA.
AC   P86262;
DT   05-MAY-2009, integrated into UniProtKB/Swiss-Prot.
DT   05-MAY-2009, sequence version 1.
DT   25-MAY-2022, entry version 21.
DE   RecName: Full=Conotoxin tx3e {ECO:0000305};
DE   AltName: Full=Conotoxin 4 {ECO:0000305};
DE   Contains:
DE     RecName: Full=Truncated conotoxin tx3e {ECO:0000305};
OS   Conus textile (Cloth-of-gold cone).
OC   Eukaryota; Metazoa; Spiralia; Lophotrochozoa; Mollusca; Gastropoda;
OC   Caenogastropoda; Neogastropoda; Conoidea; Conidae; Conus; Cylinder.
OX   NCBI_TaxID=6494;
RN   [1]
RP   PROTEIN SEQUENCE, SUBCELLULAR LOCATION, MASS SPECTROMETRY, AND
RP   HYDROXYLATION AT PRO-14.
RC   TISSUE=Venom;
RX   PubMed=19380747; DOI=10.1073/pnas.0900745106;
RA   Ueberheide B.M., Fenyo D., Alewood P.F., Chait B.T.;
RT   "Rapid sensitive analysis of cysteine rich peptide venom components.";
RL   Proc. Natl. Acad. Sci. U.S.A. 106:6910-6915(2009).
RN   [2]
RP   IDENTIFICATION BY MASS SPECTROMETRY, SUBCELLULAR LOCATION, AND
RP   HYDROXYLATION AT PRO-14.
RC   TISSUE=Venom;
RX   PubMed=22709442; DOI=10.1021/pr300312h;
RA   Bhatia S., Kil Y.J., Ueberheide B., Chait B.T., Tayo L., Cruz L., Lu B.,
RA   Yates J.R. III, Bern M.;
RT   "Constrained de novo sequencing of conotoxins.";
RL   J. Proteome Res. 11:4191-4200(2012).
CC   -!- SUBCELLULAR LOCATION: Secreted {ECO:0000269|PubMed:19380747}.
CC   -!- TISSUE SPECIFICITY: Expressed by the venom duct.
CC       {ECO:0000305|PubMed:19380747}.
CC   -!- DOMAIN: The cysteine framework is III (CC-C-C-CC). Classified in the M-
CC       2 branch, since 2 residues stand between the fourth and the fifth
CC       cysteine residues. {ECO:0000305}.
CC   -!- PTM: Contains 3 disulfide bonds. {ECO:0000269|PubMed:19380747}.
CC   -!- PTM: The truncated conotoxin tx3e is only found with an hydroxyproline,
CC       whereas conotoxin tx3e is either hydroxylated or not hydroxylated.
CC       {ECO:0000269|PubMed:22709442}.
CC   -!- MASS SPECTROMETRY: [Conotoxin tx3e]: Mass=1843.568; Mass_error=0.02;
CC       Method=Electrospray; Evidence={ECO:0000269|PubMed:19380747};
CC   -!- SIMILARITY: Belongs to the conotoxin M superfamily. {ECO:0000305}.
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DR   AlphaFoldDB; P86262; -.
DR   ConoServer; 3749; Tx3e.
DR   GO; GO:0005576; C:extracellular region; IEA:UniProtKB-SubCell.
DR   GO; GO:0090729; F:toxin activity; IEA:UniProtKB-KW.
PE   1: Evidence at protein level;
KW   Direct protein sequencing; Disulfide bond; Hydroxylation; Secreted; Toxin.
FT   PEPTIDE         1..17
FT                   /note="Conotoxin tx3e"
FT                   /id="PRO_0000371277"
FT   PEPTIDE         2..17
FT                   /note="Truncated conotoxin tx3e"
FT                   /evidence="ECO:0000305|PubMed:22709442"
FT                   /id="PRO_0000445121"
FT   MOD_RES         14
FT                   /note="4-hydroxyproline; partial"
FT                   /evidence="ECO:0000269|PubMed:19380747,
FT                   ECO:0000269|PubMed:22709442"
FT   DISULFID        2..16
FT                   /evidence="ECO:0000250|UniProtKB:P0C1M9"
FT   DISULFID        3..12
FT                   /evidence="ECO:0000250|UniProtKB:P0C1M9"
FT   DISULFID        8..15
FT                   /evidence="ECO:0000250|UniProtKB:P0C1M9"
SQ   SEQUENCE   17 AA;  1835 MW;  6A00F72EBAF71CA4 CRC64;
     SCCNAGFCRF GCTPCCY