The new UniProt website is here!
Take me to UniProt BETA
UniProtKB - P46110 (KAX34_LEIHE)
Protein
Potassium channel toxin alpha-KTx 3.4
Gene
N/A
Organism
Leiurus hebraeus (Deathstalker scorpion) (Leiurus quinquestriatus hebraeus)
Status
Functioni
Potent inhibitor of the Shaker potassium channel (Ki=0.16 nM) and its mammalian homologs (Kv1.3/KCNA3 (Ki=1.7 nM), Kv1.1/KCNA1 (Ki=136 nM), Kv1.6/KCNA6 (Ki=149 nM)).
1 PublicationMiscellaneous
Does not block Kv2.1/KCNB1 (Ki >2000 nM).1 Publication
GO - Molecular functioni
- ion channel inhibitor activity Source: InterPro
- potassium channel regulator activity Source: UniProtKB-KW
- toxin activity Source: UniProtKB-KW
Keywordsi
Molecular function | Ion channel impairing toxin, Neurotoxin, Potassium channel impairing toxin, Toxin, Voltage-gated potassium channel impairing toxin |
Names & Taxonomyi
Protein namesi | Recommended name: Potassium channel toxin alpha-KTx 3.4Alternative name(s): Agitoxin-11 Publication Short name: AgTx-11 Publication Short name: AgTx11 Publication Leiurotoxin II Short name: LeTx II Leiurotoxin-2 |
Organismi | Leiurus hebraeus (Deathstalker scorpion) (Leiurus quinquestriatus hebraeus) |
Taxonomic identifieri | 6884 [NCBI] |
Taxonomic lineagei | Eukaryota › Metazoa › Ecdysozoa › Arthropoda › Chelicerata › Arachnida › Scorpiones › Buthida › Buthoidea › Buthidae › Leiurus › |
Subcellular locationi
Extracellular region or secreted
- Secreted 1 Publication
Extracellular region or secreted
- extracellular region Source: UniProtKB-SubCell
Keywords - Cellular componenti
SecretedPTM / Processingi
Molecule processing
Feature key | Position(s) | DescriptionActions | Graphical view | Length |
---|---|---|---|---|
PeptideiPRO_0000044925 | 1 – 38 | Potassium channel toxin alpha-KTx 3.41 PublicationAdd BLAST | 38 |
Amino acid modifications
Feature key | Position(s) | DescriptionActions | Graphical view | Length |
---|---|---|---|---|
Disulfide bondi | 8 ↔ 28 | By similarity | ||
Disulfide bondi | 14 ↔ 33 | By similarity | ||
Disulfide bondi | 18 ↔ 35 | By similarity |
Keywords - PTMi
Disulfide bondExpressioni
Tissue specificityi
Expressed by the venom gland.1 Publication
Family & Domainsi
Domaini
Has the structural arrangement of an alpha-helix connected to antiparallel beta-sheets by disulfide bonds (CS-alpha/beta).Curated
Sequence similaritiesi
Belongs to the short scorpion toxin superfamily. Potassium channel inhibitor family. Alpha-KTx 03 subfamily.Curated
Family and domain databases
Gene3Di | 3.30.30.10, 1 hit |
InterProi | View protein in InterPro IPR036574, Scorpion_toxin-like_sf IPR001947, Scorpion_toxinS_K_inh |
Pfami | View protein in Pfam PF00451, Toxin_2, 1 hit |
PRINTSi | PR00286, CHARYBDTOXIN |
SUPFAMi | SSF57095, SSF57095, 1 hit |
PROSITEi | View protein in PROSITE PS01138, SCORP_SHORT_TOXIN, 1 hit |
Similar proteinsi
Cross-referencesi
Sequence databases
PIRi | A54471 |
3D structure databases
AlphaFoldDBi | P46110 |
SMRi | P46110 |
ModBasei | Search... |
Family and domain databases
Gene3Di | 3.30.30.10, 1 hit |
InterProi | View protein in InterPro IPR036574, Scorpion_toxin-like_sf IPR001947, Scorpion_toxinS_K_inh |
Pfami | View protein in Pfam PF00451, Toxin_2, 1 hit |
PRINTSi | PR00286, CHARYBDTOXIN |
SUPFAMi | SSF57095, SSF57095, 1 hit |
PROSITEi | View protein in PROSITE PS01138, SCORP_SHORT_TOXIN, 1 hit |
MobiDBi | Search... |
Entry informationi
Entry namei | KAX34_LEIHE | |
Accessioni | P46110Primary (citable) accession number: P46110 | |
Entry historyi | Integrated into UniProtKB/Swiss-Prot: | November 1, 1995 |
Last sequence update: | November 1, 1995 | |
Last modified: | May 25, 2022 | |
This is version 86 of the entry and version 1 of the sequence. See complete history. | ||
Entry statusi | Reviewed (UniProtKB/Swiss-Prot) | |
Annotation program | Animal Toxin Annotation Program |
Miscellaneousi
Keywords - Technical termi
Direct protein sequencingDocuments
- Scorpion potassium channel toxins
Nomenclature of scorpion potassium channel toxins and list of entries - SIMILARITY comments
Index of protein domains and families