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P46112

- KAX33_LEIQH

UniProt

P46112 - KAX33_LEIQH

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Protein

Potassium channel toxin alpha-KTx 3.3

Gene
N/A
Organism
Leiurus quinquestriatus hebraeus (Yellow scorpion)
Status
Reviewed - Annotation score: 3 out of 5- Experimental evidence at protein leveli

Functioni

Potent inhibitor of shaker potassium channels as well as the mammalian homologs of shaker.

GO - Molecular functioni

  1. ion channel inhibitor activity Source: InterPro

GO - Biological processi

  1. defense response Source: InterPro
  2. pathogenesis Source: InterPro
Complete GO annotation...

Keywords - Molecular functioni

Ion channel impairing toxin, Neurotoxin, Potassium channel impairing toxin, Toxin

Names & Taxonomyi

Protein namesi
Recommended name:
Potassium channel toxin alpha-KTx 3.3
Alternative name(s):
Agitoxin-3
Short name:
AgTx-3
Short name:
AgTx3
OrganismiLeiurus quinquestriatus hebraeus (Yellow scorpion)
Taxonomic identifieri6884 [NCBI]
Taxonomic lineageiEukaryotaMetazoaEcdysozoaArthropodaChelicerataArachnidaScorpionesButhidaButhoideaButhidaeLeiurus

Subcellular locationi

GO - Cellular componenti

  1. extracellular region Source: UniProtKB-KW
Complete GO annotation...

Keywords - Cellular componenti

Secreted

PTM / Processingi

Molecule processing

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Peptidei1 – 3838Potassium channel toxin alpha-KTx 3.3PRO_0000044927Add
BLAST

Amino acid modifications

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Disulfide bondi8 ↔ 28By similarity
Disulfide bondi14 ↔ 33By similarity
Disulfide bondi18 ↔ 35By similarity

Keywords - PTMi

Disulfide bond

Expressioni

Tissue specificityi

Expressed by the venom gland.

Structurei

3D structure databases

ProteinModelPortaliP46112.
SMRiP46112. Positions 1-38.
ModBaseiSearch...
MobiDBiSearch...

Family & Domainsi

Region

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Regioni26 – 338Interaction with Ca(2+)-activated K(+) channelsSequence Analysis

Sequence similaritiesi

Family and domain databases

Gene3Di3.30.30.10. 1 hit.
InterProiIPR003614. Scorpion_toxin-like.
IPR001947. Scorpion_toxinS_K_inh.
[Graphical view]
PfamiPF00451. Toxin_2. 1 hit.
[Graphical view]
PRINTSiPR00286. CHARYBDTOXIN.
ProDomiPD003586. Scorpion_toxinS. 1 hit.
[Graphical view] [Entries sharing at least one domain]
SUPFAMiSSF57095. SSF57095. 1 hit.
PROSITEiPS01138. SCORP_SHORT_TOXIN. 1 hit.
[Graphical view]

Sequencei

Sequence statusi: Complete.

P46112-1 [UniParc]FASTAAdd to Basket

« Hide

        10         20         30 
GVPINVPCTG SPQCIKPCKD AGMRFGKCMN RKCHCTPK
Length:38
Mass (Da):4,107
Last modified:November 1, 1995 - v1
Checksum:iE5945513F87B51CE
GO

Sequence databases

PIRiC54471.

Cross-referencesi

Sequence databases

PIRi C54471.

3D structure databases

ProteinModelPortali P46112.
SMRi P46112. Positions 1-38.
ModBasei Search...
MobiDBi Search...

Protocols and materials databases

Structural Biology Knowledgebase Search...

Family and domain databases

Gene3Di 3.30.30.10. 1 hit.
InterProi IPR003614. Scorpion_toxin-like.
IPR001947. Scorpion_toxinS_K_inh.
[Graphical view ]
Pfami PF00451. Toxin_2. 1 hit.
[Graphical view ]
PRINTSi PR00286. CHARYBDTOXIN.
ProDomi PD003586. Scorpion_toxinS. 1 hit.
[Graphical view ] [Entries sharing at least one domain ]
SUPFAMi SSF57095. SSF57095. 1 hit.
PROSITEi PS01138. SCORP_SHORT_TOXIN. 1 hit.
[Graphical view ]
ProtoNeti Search...

Publicationsi

  1. "Purification and characterization of three inhibitors of voltage-dependent K+ channels from Leiurus quinquestriatus var. hebraeus venom."
    Garcia M.L., Garcia-Calvo M., Hidalgo P., Lee A., Mackinnon R.
    Biochemistry 33:6834-6839(1994) [PubMed] [Europe PMC] [Abstract]
    Cited for: PROTEIN SEQUENCE.
    Tissue: Venom.
  2. "Moving pieces in a taxonomic puzzle: venom 2D-LC/MS and data clustering analyses to infer phylogenetic relationships in some scorpions from the Buthidae family (Scorpiones)."
    Nascimento D.G., Rates B., Santos D.M., Verano-Braga T., Barbosa-Silva A., Dutra A.A.A., Biondi I., Martin-Eauclaire M.-F., De Lima M.E., Pimenta A.M.C.
    Toxicon 47:628-639(2006) [PubMed] [Europe PMC] [Abstract]
    Cited for: IDENTIFICATION BY MASS SPECTROMETRY.

Entry informationi

Entry nameiKAX33_LEIQH
AccessioniPrimary (citable) accession number: P46112
Entry historyi
Integrated into UniProtKB/Swiss-Prot: November 1, 1995
Last sequence update: November 1, 1995
Last modified: October 29, 2014
This is version 67 of the entry and version 1 of the sequence. [Complete history]
Entry statusiReviewed (UniProtKB/Swiss-Prot)
Annotation programAnimal Toxin Annotation Program

Miscellaneousi

Keywords - Technical termi

Direct protein sequencing

Documents

  1. Scorpion potassium channel toxins
    Nomenclature of scorpion potassium channel toxins and list of entries
  2. SIMILARITY comments
    Index of protein domains and families

External Data

Dasty 3