NA11_ANTFU
ID NA11_ANTFU Reviewed; 47 AA.
AC P10453;
DT 01-JUL-1989, integrated into UniProtKB/Swiss-Prot.
DT 01-JUL-1989, sequence version 1.
DT 25-MAY-2022, entry version 78.
DE RecName: Full=Delta-actitoxin-Afv1a {ECO:0000303|PubMed:22683676};
DE Short=Delta-AITX-Afv1a {ECO:0000303|PubMed:22683676};
DE AltName: Full=Toxin AFT-I {ECO:0000303|PubMed:2883740};
DE Short=AFI;
OS Anthopleura fuscoviridis (Sea anemone).
OC Eukaryota; Metazoa; Cnidaria; Anthozoa; Hexacorallia; Actiniaria;
OC Actiniidae; Anthopleura.
OX NCBI_TaxID=6111;
RN [1]
RP PROTEIN SEQUENCE, AND DISULFIDE BONDS.
RC TISSUE=Nematoblast;
RX PubMed=2883740; DOI=10.1016/0041-0101(87)90243-1;
RA Sunahara S., Muramoto K., Tenma K., Kamiya H.;
RT "Amino acid sequence of two sea anemone toxins from Anthopleura
RT fuscoviridis.";
RL Toxicon 25:211-219(1987).
RN [2]
RP NOMENCLATURE.
RX PubMed=22683676; DOI=10.1016/j.toxicon.2012.05.020;
RA Oliveira J.S., Fuentes-Silva D., King G.F.;
RT "Development of a rational nomenclature for naming peptide and protein
RT toxins from sea anemones.";
RL Toxicon 60:539-550(2012).
CC -!- FUNCTION: Binds specifically to voltage-gated sodium channels (Nav),
CC thereby delaying their inactivation. This toxin is active on a variety
CC of voltage-gated sodium channels (Nav1.1/SCN1A, Nav1.2/SCN2A,
CC Nav1.3/SCN3A, Nav1.4/SCN4A, Nav1.5/SCN5A and Nav1.6/SCN8A).
CC {ECO:0000250|UniProtKB:P10454}.
CC -!- SUBCELLULAR LOCATION: Secreted {ECO:0000250|UniProtKB:P10454}.
CC Nematocyst {ECO:0000250|UniProtKB:P10454}.
CC -!- SIMILARITY: Belongs to the sea anemone sodium channel inhibitory toxin
CC family. Type I subfamily. {ECO:0000305}.
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DR PIR; A25860; A25860.
DR AlphaFoldDB; P10453; -.
DR SMR; P10453; -.
DR GO; GO:0005576; C:extracellular region; IEA:UniProtKB-SubCell.
DR GO; GO:0042151; C:nematocyst; IEA:UniProtKB-SubCell.
DR GO; GO:0017080; F:sodium channel regulator activity; IEA:UniProtKB-KW.
DR GO; GO:0090729; F:toxin activity; IEA:UniProtKB-KW.
DR GO; GO:0009966; P:regulation of signal transduction; IEA:InterPro.
DR Gene3D; 2.20.20.10; -; 1.
DR InterPro; IPR000693; Anenome_toxin.
DR InterPro; IPR023355; Myo_ane_neurotoxin_sf.
DR PIRSF; PIRSF001905; Anenome_toxin; 1.
PE 1: Evidence at protein level;
KW Cardiotoxin; Direct protein sequencing; Disulfide bond;
KW Ion channel impairing toxin; Nematocyst; Neurotoxin; Secreted; Toxin;
KW Voltage-gated sodium channel impairing toxin.
FT CHAIN 1..47
FT /note="Delta-actitoxin-Afv1a"
FT /evidence="ECO:0000269|PubMed:2883740"
FT /id="PRO_0000221518"
FT DISULFID 4..44
FT /evidence="ECO:0000269|PubMed:2883740"
FT DISULFID 6..34
FT /evidence="ECO:0000269|PubMed:2883740"
FT DISULFID 27..45
FT /evidence="ECO:0000269|PubMed:2883740"
SQ SEQUENCE 47 AA; 4873 MW; BA0FB3FE9AEA3D8E CRC64;
GVACLCDSDG PNVRGNTLSG TIWLAGCPSG WHNCKAHGPT IGWCCKQ