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UniProtKB - C0HJN0 (KAX6V_HETLA)
Protein
Potassium channel toxin alpha-KTx 6 hetlaxin
Gene
N/A
Organism
Heterometrus laoticus (Thai giant scorpion)
Status
Functioni
Binds to voltage-gated potassium channels Kv1.3/KCNA3 (IC50=0.48 µM) and Kv1.1/KCNA1 (IC50=6.7 µM) and inhibits channel activity.
2 PublicationsGO - 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, Potassium channel impairing toxin, Toxin, Voltage-gated potassium channel impairing toxin |
Names & Taxonomyi
Protein namesi | Recommended name: Potassium channel toxin alpha-KTx 6 hetlaxin1 Publication |
Organismi | Heterometrus laoticus (Thai giant scorpion) |
Taxonomic identifieri | 217256 [NCBI] |
Taxonomic lineagei | Eukaryota › Metazoa › Ecdysozoa › Arthropoda › Chelicerata › Arachnida › Scorpiones › Iurida › Scorpionoidea › Scorpionidae › Heterometrinae › Heterometrus |
Subcellular locationi
Extracellular region or secreted
- Secreted 2 Publications
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_0000430775 | 1 – 34 | Potassium channel toxin alpha-KTx 6 hetlaxin1 PublicationAdd BLAST | 34 |
Amino acid modifications
Feature key | Position(s) | DescriptionActions | Graphical view | Length |
---|---|---|---|---|
Disulfide bondi | 3 ↔ 24 | By similarity | ||
Disulfide bondi | 9 ↔ 29 | By similarity | ||
Disulfide bondi | 13 ↔ 31 | By similarity | ||
Disulfide bondi | 19 ↔ 34 | By similarity | ||
Modified residuei | 34 | Cysteine amide1 Publication | 1 |
Post-translational modificationi
Contains 4 disulfide bonds.2 Publications
Keywords - PTMi
Amidation, Disulfide bondExpressioni
Tissue specificityi
Expressed by the venom gland.2 Publications
Structurei
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 06 subfamily.Sequence analysis
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 |
i Sequence
Sequence statusi: Complete.
Experimental Info
Feature key | Position(s) | DescriptionActions | Graphical view | Length |
---|---|---|---|---|
Sequence uncertaintyi | 29 | Assigned by comparison with orthologsCurated | 1 |
Mass spectrometryi
Molecular mass is 3670.8 Da. Determined by MALDI. 1 Publication
Molecular mass is 3669.2 Da. Determined by MALDI. 1 Publication
Similar proteinsi
Cross-referencesi
3D structure databases
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 |
MobiDBi | Search... |
Entry informationi
Entry namei | KAX6V_HETLA | |
Accessioni | C0HJN0Primary (citable) accession number: C0HJN0 | |
Entry historyi | Integrated into UniProtKB/Swiss-Prot: | October 29, 2014 |
Last sequence update: | November 13, 2019 | |
Last modified: | February 23, 2022 | |
This is version 12 of the entry and version 2 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
- SIMILARITY comments
Index of protein domains and families