NA12A_ANTS7
ID NA12A_ANTS7 Reviewed; 47 AA.
AC P0C5F4;
DT 02-OCT-2007, integrated into UniProtKB/Swiss-Prot.
DT 02-OCT-2007, sequence version 1.
DT 25-MAY-2022, entry version 39.
DE RecName: Full=Delta-actitoxin-Aspp1a {ECO:0000303|PubMed:22683676};
DE Short=Delta-AITX-Aspp1a {ECO:0000303|PubMed:22683676};
DE AltName: Full=Toxin Hk2a {ECO:0000303|PubMed:14672713};
OS Anthopleura sp. (strain 'Zhanjiang') (Sea anemone).
OC Eukaryota; Metazoa; Cnidaria; Anthozoa; Hexacorallia; Actiniaria;
OC Actiniidae; Anthopleura.
OX NCBI_TaxID=462333;
RN [1]
RP NUCLEOTIDE SEQUENCE [MRNA], TOXIC DOSE, AND FUNCTION.
RC TISSUE=Tentacle;
RX PubMed=12782079; DOI=10.1016/s0041-0101(03)00033-3;
RA Liu W.H., Wang L., Wang Y.L., Peng L.S., Wu W.Y., Peng W.L., Jiang X.Y.,
RA Tu H.B., Chen H.P., Ou-Yang P., Xu A.L.;
RT "Cloning and characterization of a novel neurotoxin from the sea anemone
RT Anthopleura sp.";
RL Toxicon 41:793-801(2003).
RN [2]
RP NUCLEOTIDE SEQUENCE [MRNA], AND FUNCTION.
RC TISSUE=Tentacle;
RX PubMed=14672713; DOI=10.1016/j.bbrc.2003.11.102;
RA Wang L., Ou J., Peng L., Zhong X., Du J., Liu Y., Huang Y., Liu W.,
RA Zhang Y., Dong M., Xu A.-L.;
RT "Functional expression and characterization of four novel neurotoxins from
RT sea anemone Anthopleura sp.";
RL Biochem. Biophys. Res. Commun. 313:163-170(2004).
RN [3]
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 (site 3), thereby delaying their inactivation during signal
CC transduction (By similarity). Has a heart stimulation effect on
CC isolated rat atria that is higher than that of Hk7a, Hk8a and Hk16a
CC (PubMed:12782079,PubMed:14672713). {ECO:0000250,
CC ECO:0000269|PubMed:12782079, ECO:0000269|PubMed:14672713}.
CC -!- SUBCELLULAR LOCATION: Secreted {ECO:0000305}. Nematocyst {ECO:0000305}.
CC -!- TOXIC DOSE: LD(50) is 1.4 mg/kg when intraperitoneally injected into
CC mice. {ECO:0000269|PubMed:12782079}.
CC -!- SIMILARITY: Belongs to the sea anemone sodium channel inhibitory toxin
CC family. Type I subfamily. {ECO:0000305}.
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DR AlphaFoldDB; P0C5F4; -.
DR SMR; P0C5F4; -.
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 2: Evidence at transcript level;
KW Cardiotoxin; Disulfide bond; Ion channel impairing toxin; Nematocyst;
KW Neurotoxin; Secreted; Toxin; Voltage-gated sodium channel impairing toxin.
FT CHAIN 1..47
FT /note="Delta-actitoxin-Aspp1a"
FT /id="PRO_0000305108"
FT DISULFID 4..44
FT /evidence="ECO:0000250|UniProtKB:P01530"
FT DISULFID 6..34
FT /evidence="ECO:0000250|UniProtKB:P01530"
FT DISULFID 27..45
FT /evidence="ECO:0000250|UniProtKB:P01530"
SQ SEQUENCE 47 AA; 4872 MW; AFEAE3BB60A1D9CB CRC64;
GVPCLCDSDG PSVRGNTLSG TLWLAGCPSG WHNCKAHGPT IGWCCKK