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P0C167 (KAX14_CENLM) Reviewed, UniProtKB/Swiss-Prot

Last modified October 16, 2013. Version 24. Feed History...

Clusters with 100%, 90%, 50% identity | Documents (2) | Third-party data text xml rdf/xml gff fasta
to top of pageNames·Attributes·General annotation·Ontologies·Sequence annotation·Sequences·References·Cross-refs·Entry info·DocumentsCustomize order

Names and origin

Protein namesRecommended name:
Potassium channel toxin alpha-KTx 1.4
Alternative name(s):
Limbatotoxin
Short name=LbTx
Limbatustoxin
OrganismCentruroides limbatus (Bark scorpion)
Taxonomic identifier244936 [NCBI]
Taxonomic lineageEukaryotaMetazoaEcdysozoaArthropodaChelicerataArachnidaScorpionesButhidaButhoideaButhidaeCentruroides

Protein attributes

Sequence length37 AA.
Sequence statusComplete.
Protein existenceEvidence at protein level

General annotation (Comments)

Function

Blocks selectively the high conductance calcium-activated (maxi-K) potassium channels By similarity.

Subcellular location

Secreted.

Tissue specificity

Expressed by the venom gland.

Sequence similarities

Belongs to the short scorpion toxin superfamily. Potassium channel inhibitor family. Alpha-KTx 1 subfamily.

Ontologies

Keywords
   Cellular componentSecreted
   Molecular functionIon channel impairing toxin
Neurotoxin
Potassium channel impairing toxin
Toxin
   PTMDisulfide bond
   Technical termDirect protein sequencing
Gene Ontology (GO)
   Biological_processdefense response

Inferred from electronic annotation. Source: InterPro

pathogenesis

Inferred from electronic annotation. Source: InterPro

   Cellular_componentextracellular region

Inferred from electronic annotation. Source: UniProtKB-SubCell

   Molecular_functionion channel inhibitor activity

Inferred from electronic annotation. Source: InterPro

Complete GO annotation...

Sequence annotation (Features)

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifier

Molecule processing

Peptide1 – 3737Potassium channel toxin alpha-KTx 1.4
PRO_0000226964

Sites

Site271Basic residue of the functional dyad By similarity
Site361Aromatic residue of the functional dyad By similarity

Amino acid modifications

Disulfide bond7 ↔ 28 By similarity
Disulfide bond13 ↔ 33 By similarity
Disulfide bond17 ↔ 35 By similarity

Sequences

Sequence LengthMass (Da)Tools
P0C167 [UniParc].

Last modified March 7, 2006. Version 1.
Checksum: D24C3592CBA917A3

FASTA374,042
        10         20         30 
VFIDVSCSVS KECWAPCKAA VGTDRGKCMG KKCRCYX 

« Hide

References

[1]"Peptides and genes coding for scorpion toxins that affect ion-channels."
Novick J., Leonard R.J., King V.F., Schmalhofer W., Kaczororowski G.J., Garcia M.L.
Biophys. J. 59:78A-78A(1991)
Cited for: PROTEIN SEQUENCE.
Tissue: Venom.

Cross-references

3D structure databases

ModBaseSearch...
MobiDBSearch...

Protocols and materials databases

StructuralBiologyKnowledgebaseSearch...

Family and domain databases

Gene3D3.30.30.10. 1 hit.
InterProIPR003614. Scorpion_toxin-like.
IPR001947. Scorpion_toxinS_K_inh.
[Graphical view]
PfamPF00451. Toxin_2. 1 hit.
[Graphical view]
PRINTSPR00286. CHARYBDTOXIN.
ProDomPD003586. Scorpion_toxinS. 1 hit.
[Graphical view] [Entries sharing at least one domain]
SUPFAMSSF57095. SSF57095. 1 hit.
PROSITEPS01138. SCORP_SHORT_TOXIN. 1 hit.
[Graphical view]
ProtoNetSearch...

Entry information

Entry nameKAX14_CENLM
AccessionPrimary (citable) accession number: P0C167
Entry history
Integrated into UniProtKB/Swiss-Prot: March 7, 2006
Last sequence update: March 7, 2006
Last modified: October 16, 2013
This is version 24 of the entry and version 1 of the sequence. [Complete history]
Entry statusReviewed (UniProtKB/Swiss-Prot)
Annotation programAnimal Toxin Annotation Program

Relevant documents

SIMILARITY comments

Index of protein domains and families

Scorpion potassium channel toxins

Nomenclature of scorpion potassium channel toxins and list of entries