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P59944

- KAX1D_LEIQH

UniProt

P59944 - KAX1D_LEIQH

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Protein

Potassium channel toxin alpha-KTx 1.13

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

Functioni

Blocks calcium-activated potassium channels.By similarity

Sites

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Sitei27 – 271Basic residue of the functional dyadBy similarity
Sitei36 – 361Aromatic residue of the functional dyadBy similarity

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

Calcium-activated potassium channel impairing toxin, Ion channel impairing toxin, Neurotoxin, Potassium channel impairing toxin, Toxin

Names & Taxonomyi

Protein namesi
Recommended name:
Potassium channel toxin alpha-KTx 1.13
Alternative name(s):
Charybdotoxin c
Short name:
ChTx-c
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 – 3737Potassium channel toxin alpha-KTx 1.13PRO_0000044892Add
BLAST

Amino acid modifications

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Modified residuei1 – 11Pyrrolidone carboxylic acid
Disulfide bondi7 ↔ 28By similarity
Disulfide bondi13 ↔ 33By similarity
Disulfide bondi17 ↔ 35By similarity

Keywords - PTMi

Disulfide bond, Pyrrolidone carboxylic acid

Expressioni

Tissue specificityi

Expressed by the venom gland.

Structurei

3D structure databases

ProteinModelPortaliP59944.
SMRiP59944. Positions 1-37.
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.

P59944-1 [UniParc]FASTAAdd to Basket

« Hide

        10         20         30 
QFTNVSCTTS KECWSVCEKL YNTSRGKCMN KKCRCYS
Length:37
Mass (Da):4,318
Last modified:October 31, 2003 - v1
Checksum:i29319BCB43994EE2
GO

Cross-referencesi

3D structure databases

ProteinModelPortali P59944.
SMRi P59944. Positions 1-37.
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. "Dynamic diversification from a putative common ancestor of scorpion toxins affecting sodium, potassium, and chloride channels."
    Froy O., Sagiv T., Poreh M., Urbach D., Zilberberg N., Gurevitz M.
    J. Mol. Evol. 48:187-196(1999) [PubMed] [Europe PMC] [Abstract]
    Cited for: PROTEIN SEQUENCE.
    Tissue: Venom.

Entry informationi

Entry nameiKAX1D_LEIQH
AccessioniPrimary (citable) accession number: P59944
Entry historyi
Integrated into UniProtKB/Swiss-Prot: October 31, 2003
Last sequence update: October 31, 2003
Last modified: October 29, 2014
This is version 42 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