TOG3D_AGEAP
ID TOG3D_AGEAP Reviewed; 37 AA.
AC P81746;
DT 26-SEP-2001, integrated into UniProtKB/Swiss-Prot.
DT 26-SEP-2001, sequence version 1.
DT 23-FEB-2022, entry version 58.
DE RecName: Full=Omega-agatoxin-Aa3d;
DE Short=Omega-AGTX-Aa3d;
DE AltName: Full=Omega-agatoxin IIID;
DE Short=Omega-Aga-IIID;
DE AltName: Full=Omega-agatoxin-3D;
DE Flags: Fragment;
OS Agelenopsis aperta (North American funnel-web spider) (Agelenopsis
OS gertschi).
OC Eukaryota; Metazoa; Ecdysozoa; Arthropoda; Chelicerata; Arachnida; Araneae;
OC Araneomorphae; Entelegynae; Agelenidae; Agelenopsis.
OX NCBI_TaxID=6908;
RN [1]
RP PROTEIN SEQUENCE, AND CHARACTERIZATION.
RC TISSUE=Venom;
RX PubMed=8172884; DOI=10.1021/bi00183a013;
RA Ertel E.A., Warren V.A., Adams M.E., Griffin P.R., Cohen C.J., Smith M.M.;
RT "Type III omega-agatoxins: a family of probes for similar binding sites on
RT L- and N-type calcium channels.";
RL Biochemistry 33:5098-5108(1994).
CC -!- FUNCTION: Omega-agatoxins are antagonists of voltage-gated calcium
CC channels. This toxin blocks calcium channels in insect central neurons
CC but not at peripheral neuromuscular junctions. In vertebrates, it is
CC broadly active against all high-threshold Cav1/CACNA1 channels and
CC Cav2.2/CACNA1B channels.
CC -!- SUBCELLULAR LOCATION: Secreted.
CC -!- TISSUE SPECIFICITY: Expressed by the venom gland.
CC -!- PTM: Disulfide bonds are present. {ECO:0000305}.
CC -!- MISCELLANEOUS: This toxin does not inhibit Cav3 (T-type) channels.
CC -!- SIMILARITY: Belongs to the neurotoxin 04 (omega-agtx) family. 03 (type
CC II/III omega-agtx) subfamily. {ECO:0000305}.
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DR PIR; F54252; F54252.
DR ArachnoServer; AS000181; omega-agatoxin-Aa3d (N-terminal fragment).
DR GO; GO:0005576; C:extracellular region; IEA:UniProtKB-SubCell.
DR GO; GO:0005246; F:calcium channel regulator activity; IEA:UniProtKB-KW.
DR GO; GO:0090729; F:toxin activity; IEA:UniProtKB-KW.
DR InterPro; IPR005853; Omega-agatoxin_II/III_CS.
DR InterPro; IPR013605; Toxin_34.
DR Pfam; PF08396; Toxin_34; 1.
DR PROSITE; PS60023; OMEGA_AGA_II_III; 1.
PE 1: Evidence at protein level;
KW Calcium channel impairing toxin; Direct protein sequencing; Disulfide bond;
KW Ion channel impairing toxin; Neurotoxin; Secreted; Toxin;
KW Voltage-gated calcium channel impairing toxin.
FT CHAIN 1..>37
FT /note="Omega-agatoxin-Aa3d"
FT /id="PRO_0000087609"
FT NON_TER 37
SQ SEQUENCE 37 AA; 4084 MW; 89E46267B3846D93 CRC64;
SCIKIGEDCD GDKDDCQCCR TNGYCSXYXL FGYLKSG