P01491 · SCXI_CENSC

Function

function

Beta toxins bind voltage-independently at site-4 of sodium channels (Nav) and shift the voltage of activation toward more negative potentials thereby affecting sodium channel activation and promoting spontaneous and repetitive firing. Affects channels from chicken and frog.

GO annotations

all annotationsall molecular functionvirus receptor activitydna bindingrna bindingcytoskeletal motor activitycatalytic activitygtpase activitystructural molecule activitytransporter activitycytoskeletal protein bindinglipid bindingcyclase activityantioxidant activityoxidoreductase activitytransferase activityhydrolase activitylyase activityisomerase activityligase activityprotein tag activitycargo receptor activityhistone bindingprotein folding chaperonetranslation regulator activitynutrient reservoir activityreceptor ligand activitymolecular transducer activitymolecular adaptor activitytoxin activitycell adhesion mediator activitymolecular function regulator activityvirus coreceptor activitycatalytic activity, acting on a proteincatalytic activity, acting on dnacatalytic activity, acting on rnamolecular carrier activitytranscription regulator activitygeneral transcription initiation factor activitymolecular sensor activitymolecular sequestering activityatp-dependent activityother molecular functionall biological processmitotic cell cyclecytokinesiscytoplasmic translationimmune system processmuscle system processcirculatory system processrenal system processrespiratory system processcarbohydrate metabolic processgeneration of precursor metabolites and energydna replicationdna repairdna recombinationchromatin organizationdna-templated transcriptionregulation of dna-templated transcriptiontrna metabolic processprotein foldingprotein glycosylationamino acid metabolic processmodified amino acid metabolic processlipid metabolic processvitamin metabolic processsulfur compound metabolic processintracellular protein transportnucleocytoplasmic transportautophagyinflammatory responsemitochondrion organizationcytoskeleton organizationmicrotubule-based movementperoxisome organizationlysosome organizationchromosome segregationcell adhesionestablishment or maintenance of cell polarityprogrammed cell deathphotosynthesismrna metabolic processsnrna metabolic processvesicle-mediated transportreproductive processdigestive system processsignalingcell differentiationprotein catabolic processextracellular matrix organizationregulatory ncrna-mediated gene silencingtelomere organizationcell junction organizationwound healingribosome biogenesiscilium organizationanatomical structure developmentcell motilitynervous system processendocrine processprotein maturationtransmembrane transportnucleobase-containing small molecule metabolic processhepaticobiliary system processmembrane organizationprotein-containing complex assemblycell wall organization or biogenesisnitrogen cycle metabolic processprotein localization to plasma membranedefense response to other organismdetoxificationmeiotic nuclear divisionmitotic nuclear divisionmitochondrial gene expressioncarbohydrate derivative metabolic processother biological processall cellular componentnuclear chromosomeextracellular regionextracellular spacecell wallnucleusnuclear envelopenucleoplasmchromosomenucleolusmitochondrionlysosomeendosomevacuoleperoxisomeendoplasmic reticulumgolgi apparatuslipid dropletmicrotubule organizing centercytosolribosomecytoskeletonplasma membraneciliumplastidthylakoidexternal encapsulating structureextracellular matrixcytoplasmic vesicleorganelleother cellular component
Cell color indicative of number of GO terms
AspectTerm
Cellular Componentextracellular region
Molecular Functionsodium channel inhibitor activity
Molecular Functiontoxin activity
Biological Processdefense response

Keywords

Names & Taxonomy

Protein names

  • Recommended name
    Beta-toxin CsEI
  • Short names
    CsE-I
  • Alternative names
    • Neurotoxin I

Organism names

Accessions

  • Primary accession
    P01491
  • Secondary accessions
    • Q95WC1

Subcellular Location

Keywords

PTM/Processing

Features

Showing features for signal, peptide, disulfide bond, modified residue.

TypeIDPosition(s)Description
Signal1-19
PeptidePRO_000003529420-83Beta-toxin CsEI
Disulfide bond30↔83
Disulfide bond34↔59
Disulfide bond43↔64
Disulfide bond47↔66
Modified residue83Cysteine amide

Keywords

Expression

Tissue specificity

Expressed by the venom gland.

Family & Domains

Features

Showing features for domain.

TypeIDPosition(s)Description
Domain20-84LCN-type CS-alpha/beta

Domain

Has the structural arrangement of an alpha-helix connected to antiparallel beta-sheets by disulfide bonds (CS-alpha/beta).

Sequence similarities

Keywords

Family and domain databases

Sequence

  • Sequence status
    Complete
  • Sequence processing
    The displayed sequence is further processed into a mature form.
  • Length
    86
  • Mass (Da)
    9,634
  • Last updated
    2002-04-16 v3
  • Checksum
    81CDD3CEAA75B2CF
MNSLLMITACLVLIGTVWAKDGYLVEKTGCKKTCYKLGENDFCNRECKWKHIGGSYGYCYGFGCYCEGLPDSTQTWPLPNKTCGKK

Features

Showing features for sequence conflict.

TypeIDPosition(s)Description
Sequence conflict59in Ref. 1; AAL23428
Sequence conflict82-83in Ref. 2; AA sequence

Keywords

Sequence databases

Nucleotide SequenceProtein SequenceMolecule TypeStatus
AF338460
EMBL· GenBank· DDBJ
AAL23428.1
EMBL· GenBank· DDBJ
mRNA

Similar Proteins

Disclaimer

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