ID   TXCA_CAEEX              Reviewed;         102 AA.
AC   Q8MTX1;
DT   17-JAN-2003, integrated into UniProtKB/Swiss-Prot.
DT   01-OCT-2002, sequence version 1.
DT   25-MAY-2022, entry version 36.
DE   RecName: Full=U3-aranetoxin-Ce1a;
DE            Short=U3-AATX-Ce1a;
DE   AltName: Full=Neurotoxic peptide caeron;
DE   Flags: Precursor;
OS   Caerostris extrusa (Bark spider) (Caerostris bankana).
OC   Eukaryota; Metazoa; Ecdysozoa; Arthropoda; Chelicerata; Arachnida; Araneae;
OC   Araneomorphae; Entelegynae; Araneoidea; Araneidae; Caerostris.
OX   NCBI_TaxID=172846;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [MRNA].
RC   TISSUE=Venom gland;
RA   Dai L., Naoki H., Nakajima T.;
RT   "cDNA sequence of neurotoxic peptide, caeron, from spider Caerostris
RT   extrusa venom.";
RL   Submitted (AUG-2001) to the EMBL/GenBank/DDBJ databases.
CC   -!- SUBCELLULAR LOCATION: Secreted {ECO:0000305}.
CC   -!- TISSUE SPECIFICITY: Expressed by the venom gland.
CC   -!- SIMILARITY: Belongs to the neurotoxin 20 family.
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DR   EMBL; AY050523; AAL12487.1; -; mRNA.
DR   AlphaFoldDB; Q8MTX1; -.
DR   SMR; Q8MTX1; -.
DR   ArachnoServer; AS000300; U3-aranetoxin-Ce1a.
DR   GO; GO:0005576; C:extracellular region; IEA:UniProtKB-SubCell.
DR   GO; GO:0090729; F:toxin activity; IEA:UniProtKB-KW.
DR   InterPro; IPR020202; Atracotoxin.
DR   Pfam; PF17556; MIT_LIKE_ACTX; 1.
PE   2: Evidence at transcript level;
KW   Neurotoxin; Secreted; Signal; Toxin.
FT   SIGNAL          1..21
FT                   /evidence="ECO:0000255"
FT   CHAIN           22..102
FT                   /note="U3-aranetoxin-Ce1a"
FT                   /id="PRO_0000035585"
SQ   SEQUENCE   102 AA;  11403 MW;  C351E1287F837C52 CRC64;
     MKHLSIFFVF FCCICVMLCD AYGDCKKNSD CKAGECCVNT PPFARSTCQK YLQQGEFCAH
     MGKYNPLGKY INMCPCGKGL KCQLKDVSGP LALFRSRMLT CV