P68426 · TXT1_CYRSC

Function

function

Binds to the nicotinic acetylcholine receptor. Blocks neuromuscular transmission.

Caution

While it is structurally defined as a knottin it lacks the conserved Cys residue in position 77.

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
Cellular Componenthost cell postsynaptic membrane
Molecular Functionion channel inhibitor activity
Molecular Functiontoxin activity

Keywords

Names & Taxonomy

Protein names

  • Recommended name
    U6-theraphotoxin-Hs1a
  • Short names
    U6-TRTX-Hs1a
  • Alternative names
    • SHT-I
    • Toxin 1
    • Toxin-I

Organism names

Accessions

  • Primary accession
    P68426

Organism-specific databases

Subcellular Location

Keywords

PTM/Processing

Features

Showing features for signal, propeptide, chain, disulfide bond.

TypeIDPosition(s)Description
Signal1-21
PropeptidePRO_000003557022-48
ChainPRO_000003557149-81U6-theraphotoxin-Hs1a
Disulfide bond50↔65
Disulfide bond57↔70

Keywords

Expression

Tissue specificity

Expressed by the venom gland.

Structure

Family & Domains

Domain

The presence of a 'disulfide through disulfide knot' structurally defines this protein as a knottin.

Sequence similarities

Keywords

Family and domain databases

Sequence

  • Sequence status
    Complete
  • Sequence processing
    The displayed sequence is further processed into a mature form.
  • Length
    81
  • Mass (Da)
    9,148
  • Last updated
    2004-11-23 v1
  • Checksum
    CDE703FA5F58BEDE
MKASMFLALAGLVLLFVVCYASESEEKEFPRELLSTIFAVDDFKGEERECLGIFKACTPGKNECCSNRVCSGKTRWSKWKL

Similar Proteins

Disclaimer

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