NA122_ACTEQ
ID NA122_ACTEQ Reviewed; 82 AA.
AC B1NWU3;
DT 22-JUL-2015, integrated into UniProtKB/Swiss-Prot.
DT 29-APR-2008, sequence version 1.
DT 25-MAY-2022, entry version 35.
DE RecName: Full=Delta-actitoxin-Aeq2b 2 {ECO:0000303|PubMed:22683676};
DE Short=Delta-AITX-Aeq2b 2 {ECO:0000303|PubMed:22683676};
DE AltName: Full=Ae2-2 {ECO:0000303|PubMed:18222944};
DE AltName: Full=Neurotoxin 2-2 {ECO:0000312|EMBL:ABW97359.1};
DE Flags: Precursor;
OS Actinia equina (Beadlet anemone).
OC Eukaryota; Metazoa; Cnidaria; Anthozoa; Hexacorallia; Actiniaria;
OC Actiniidae; Actinia.
OX NCBI_TaxID=6106;
RN [1]
RP NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RX PubMed=18222944; DOI=10.1093/molbev/msn021;
RA Moran Y., Weinberger H., Sullivan J.C., Reitzel A.M., Finnerty J.R.,
RA Gurevitz M.;
RT "Concerted evolution of sea anemone neurotoxin genes is revealed through
RT analysis of the Nematostella vectensis genome.";
RL Mol. Biol. Evol. 25:737-747(2008).
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 during signal transduction. Causes
CC death to crabs. {ECO:0000250|UniProtKB:Q9NJQ2}.
CC -!- SUBCELLULAR LOCATION: Secreted {ECO:0000305}. Nematocyst {ECO:0000305}.
CC -!- SIMILARITY: Belongs to the sea anemone sodium channel inhibitory toxin
CC family. Type I subfamily. {ECO:0000305}.
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DR EMBL; EU124480; ABW97359.1; -; Genomic_DNA.
DR AlphaFoldDB; B1NWU3; -.
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 Gene3D; 2.20.20.10; -; 1.
DR InterPro; IPR023355; Myo_ane_neurotoxin_sf.
PE 3: Inferred from homology;
KW Cleavage on pair of basic residues; Disulfide bond;
KW Ion channel impairing toxin; Nematocyst; Neurotoxin; Secreted; Signal;
KW Toxin; Voltage-gated sodium channel impairing toxin.
FT SIGNAL 1..19
FT /evidence="ECO:0000255"
FT PROPEP 20..26
FT /evidence="ECO:0000250|UniProtKB:Q9NJQ2"
FT /id="PRO_0000433576"
FT CHAIN 29..82
FT /note="Delta-actitoxin-Aeq2b 2"
FT /evidence="ECO:0000250|UniProtKB:P01530"
FT /id="PRO_5000319687"
FT DISULFID 32..79
FT /evidence="ECO:0000250|UniProtKB:P01530"
FT DISULFID 34..69
FT /evidence="ECO:0000250|UniProtKB:P01530"
FT DISULFID 62..80
FT /evidence="ECO:0000250|UniProtKB:P01530"
SQ SEQUENCE 82 AA; 8859 MW; BA3C63A25D9FBB02 CRC64;
MNRLMILVFA AVFLALASAD EDVDIAKRGV PCLCVSDGPR PRGNNLSGIM WMKTGGYGGN
GCPKGWHFCG KSRGFFSDCC KR