P0C8U4 · CA1C_CONCN

Function

function

Alpha-conotoxins act on postsynaptic membranes, they bind to the nicotinic acetylcholine receptors (nAChR) and thus inhibit them.

Miscellaneous

Found in injectable (milked) (IV) venom.

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 Functionacetylcholine receptor inhibitor activity
Molecular Functionion channel regulator activity
Molecular Functiontoxin activity

Keywords

Names & Taxonomy

Protein names

Organism names

  • Taxonomic identifier
  • Taxonomic lineage
    Eukaryota > Metazoa > Spiralia > Lophotrochozoa > Mollusca > Gastropoda > Caenogastropoda > Neogastropoda > Conoidea > Conidae > Conus > Pionoconus

Accessions

  • Primary accession
    P0C8U4

Organism-specific databases

Subcellular Location

PTM/Processing

Features

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

TypeIDPosition(s)Description
Signal1-21
PropeptidePRO_000036605422-47
Modified residue48Deamidated asparagine; in CnIH; partial
PeptidePRO_000036605548-62Alpha-conotoxin CnIH
PeptidePRO_000041982649-62Alpha-conotoxin CnIF
Disulfide bond51↔56
PeptidePRO_000041982751-62Alpha-conotoxin CnIC
Disulfide bond52↔62
Modified residue62Cysteine amide

Keywords

Expression

Tissue specificity

Expressed by the venom duct.

Family & Domains

Domain

The cysteine framework is I (CC-C-C). Alpha3/5 pattern.

Sequence similarities

Belongs to the conotoxin A superfamily.

Keywords

Family and domain databases

Sequence

  • Sequence status
    Complete
  • Sequence processing
    The displayed sequence is further processed into a mature form.
  • Length
    64
  • Mass (Da)
    7,209
  • Last updated
    2012-10-31 v2
  • Checksum
    6EF718D09A422F7F
MGMRMMFTVFLLVVLTTTVVSFPSDSASDVRDDEAKDERSDMYKSKRNGRCCHPACGKHFSCGR

Features

Showing features for sequence conflict.

TypeIDPosition(s)Description
Sequence conflict10in Ref. 2; no nucleotide entry

Mass Spectrometry

Alpha-conotoxin CnIC

Molecular mass is 1,286.48 Da. Determined by Electrospray. CnIC.

Alpha-conotoxin CnIF

Molecular mass is 1,499.58 Da. Determined by Electrospray. CnIF.

Alpha-conotoxin CnIH

Molecular mass is 1,613.64 Da. Determined by Electrospray. CnIH.

Alpha-conotoxin CnIH

Molecular mass is 1,614.63 Da. Determined by Electrospray. Deamidated CnIH.

Similar Proteins

Disclaimer

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