ID   SCX33_TITSE             Reviewed;         102 AA.
AC   A0A7S8MVA6;
DT   03-AUG-2022, integrated into UniProtKB/Swiss-Prot.
DT   02-JUN-2021, sequence version 1.
DT   03-AUG-2022, entry version 5.
DE   RecName: Full=Putative sodium channel toxin Ts33 {ECO:0000303|PubMed:33181162};
DE   AltName: Full=Tityustoxin-33 {ECO:0000305};
DE   Flags: Precursor;
OS   Tityus serrulatus (Brazilian scorpion).
OC   Eukaryota; Metazoa; Ecdysozoa; Arthropoda; Chelicerata; Arachnida;
OC   Scorpiones; Buthida; Buthoidea; Buthidae; Tityus.
OX   NCBI_TaxID=6887;
RN   [1] {ECO:0000312|EMBL:QPD99107.1}
RP   NUCLEOTIDE SEQUENCE [MRNA].
RC   TISSUE=Telson;
RX   PubMed=33181162; DOI=10.1016/j.toxicon.2020.11.001;
RA   Kalapothakis Y., Miranda K., Pereira A.H., Witt A.S.A., Marani C.,
RA   Martins A.P., Leal H.G., Campos-Junior E., Pimenta A.M.C., Borges A.,
RA   Chavez-Olortegui C., Kalapothakis E.;
RT   "Novel components of Tityus serrulatus venom: a transcriptomic approach.";
RL   Toxicon 189:91-104(2021).
CC   -!- FUNCTION: Putative sodium channel toxin. {ECO:0000305|PubMed:33181162}.
CC   -!- SUBCELLULAR LOCATION: Secreted {ECO:0000305|PubMed:33181162}.
CC   -!- TISSUE SPECIFICITY: Expressed by the venom gland.
CC       {ECO:0000305|PubMed:33181162}.
CC   -!- DOMAIN: Has the structural arrangement of an alpha-helix connected to
CC       antiparallel beta-sheets by disulfide bonds (CS-alpha/beta).
CC       {ECO:0000305}.
CC   -!- SIMILARITY: Belongs to the long (4 C-C) scorpion toxin superfamily.
CC       Sodium channel inhibitor family. {ECO:0000305}.
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DR   EMBL; MT026710; QPD99107.1; -; mRNA.
DR   GO; GO:0005576; C:extracellular region; IEA:UniProtKB-SubCell.
DR   GO; GO:0019871; F:sodium channel inhibitor activity; IEA:InterPro.
DR   GO; GO:0090729; F:toxin activity; IEA:InterPro.
DR   GO; GO:0006952; P:defense response; IEA:InterPro.
DR   Gene3D; 3.30.30.10; -; 1.
DR   InterPro; IPR044062; LCN-type_CS_alpha_beta_dom.
DR   InterPro; IPR003614; Scorpion_toxin-like.
DR   InterPro; IPR036574; Scorpion_toxin-like_sf.
DR   InterPro; IPR018218; Scorpion_toxinL.
DR   InterPro; IPR002061; Scorpion_toxinL/defensin.
DR   Pfam; PF00537; Toxin_3; 1.
DR   PRINTS; PR00285; SCORPNTOXIN.
DR   SMART; SM00505; Knot1; 1.
DR   SUPFAM; SSF57095; SSF57095; 1.
DR   PROSITE; PS51863; LCN_CSAB; 1.
PE   3: Inferred from homology;
KW   Disulfide bond; Ion channel impairing toxin; Neurotoxin; Secreted; Signal;
KW   Toxin; Voltage-gated sodium channel impairing toxin.
FT   SIGNAL          1..20
FT                   /evidence="ECO:0000255"
FT   CHAIN           21..102
FT                   /note="Putative sodium channel toxin Ts33"
FT                   /id="PRO_5030794270"
FT   DOMAIN          24..102
FT                   /note="LCN-type CS-alpha/beta"
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU01210"
FT   DISULFID        34..87
FT                   /evidence="ECO:0000305"
FT   DISULFID        38..62
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU01210"
FT   DISULFID        47..67
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU01210"
FT   DISULFID        51..69
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU01210"
SQ   SEQUENCE   102 AA;  11929 MW;  2BB4E72074EF6E10 CRC64;
     MKTAFFILLI FSIFYGKAKG AEDREGFPVN RFGCTYPCYY GEDTEKCRRL CRETLGADYG
     YCFWYACYCE NLPENVRRIK SQGFFGCSNG WWVVSTTTRK PK