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Protein

Potassium channel toxin alpha-KTx 6.5

Gene
N/A
Organism
Pandinus imperator (Emperor scorpion)
Status
Reviewed-Annotation score: Annotation score: 3 out of 5-Experimental evidence at protein leveli

Functioni

Blocks voltage-gated potassium channels.By similarity

GO - Molecular functioni

GO - Biological processi

Complete GO annotation...

Keywords - Molecular functioni

Toxin

Names & Taxonomyi

Protein namesi
Recommended name:
Potassium channel toxin alpha-KTx 6.5
Alternative name(s):
Pi-7
Short name:
Pi7
Toxin-7
OrganismiPandinus imperator (Emperor scorpion)
Taxonomic identifieri55084 [NCBI]
Taxonomic lineageiEukaryotaMetazoaEcdysozoaArthropodaChelicerataArachnidaScorpionesIuridaScorpionoideaScorpionidaeScorpioninaePandinus

Subcellular locationi

GO - Cellular componenti

Complete GO annotation...

Keywords - Cellular componenti

Secreted

PTM / Processingi

Molecule processing

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Peptidei1 – 3838Potassium channel toxin alpha-KTx 6.5PRO_0000044914Add
BLAST

Amino acid modifications

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Disulfide bondi6 ↔ 271 Publication
Disulfide bondi12 ↔ 321 Publication
Disulfide bondi16 ↔ 341 Publication
Disulfide bondi22 ↔ 371 Publication

Keywords - PTMi

Disulfide bond

Expressioni

Tissue specificityi

Expressed by the venom gland.

Structurei

Secondary structure

1
38
Legend: HelixTurnBeta strand
Show more details
Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Helixi9 – 1911Combined sources
Beta strandi25 – 284Combined sources
Beta strandi31 – 344Combined sources

3D structure databases

Select the link destinations:
PDBei
RCSB PDBi
PDBji
Links Updated
EntryMethodResolution (Å)ChainPositionsPDBsum
1QKYNMR-A1-38[»]
ProteinModelPortaliP58490.
SMRiP58490. Positions 1-38.
ModBaseiSearch...
MobiDBiSearch...

Miscellaneous databases

EvolutionaryTraceiP58490.

Family & Domainsi

Domaini

Has the structural arrangement of an alpha-helix connected to a beta-sheet by disulfide bonds (CSalpha/beta).

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]
ProDomiPD003586. Scorpion_toxinS. 1 hit.
[Graphical view] [Entries sharing at least one domain]
SUPFAMiSSF57095. SSF57095. 1 hit.

Sequencei

Sequence statusi: Complete.

P58490-1 [UniParc]FASTAAdd to basket

« Hide

        10         20         30 
DEAIRCTGTK DCYIPCRYIT GCFNSRCINK SCKCYGCT
Length:38
Mass (Da):4,291
Last modified:December 19, 2001 - v1
Checksum:i101A3B3A95561FB8
GO

Cross-referencesi

3D structure databases

Select the link destinations:
PDBei
RCSB PDBi
PDBji
Links Updated
EntryMethodResolution (Å)ChainPositionsPDBsum
1QKYNMR-A1-38[»]
ProteinModelPortaliP58490.
SMRiP58490. Positions 1-38.
ModBaseiSearch...
MobiDBiSearch...

Protocols and materials databases

Structural Biology KnowledgebaseSearch...

Miscellaneous databases

EvolutionaryTraceiP58490.

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]
ProDomiPD003586. Scorpion_toxinS. 1 hit.
[Graphical view] [Entries sharing at least one domain]
SUPFAMiSSF57095. SSF57095. 1 hit.
ProtoNetiSearch...

Publicationsi

  1. "Two similar peptides from the venom of the scorpion Pandinus imperator, one highly effective blocker and the other inactive on K+ channels."
    Olamendi-Portugal T., Gomez-Lagunas F., Gurrola G.B., Possani L.D.
    Toxicon 36:759-770(1998) [PubMed] [Europe PMC] [Abstract]
    Cited for: PROTEIN SEQUENCE.
    Tissue: Venom.
  2. "Pi7, an orphan peptide from the scorpion Pandinus imperator: a 1H-NMR analysis using a nano-NMR probe."
    Delepierre M., Prochnicka-Chalufour A., Boisbouvier J., Possani L.D.
    Biochemistry 38:16756-16765(1999) [PubMed] [Europe PMC] [Abstract]
    Cited for: STRUCTURE BY NMR, DISULFIDE BONDS.

Entry informationi

Entry nameiKAX65_PANIM
AccessioniPrimary (citable) accession number: P58490
Entry historyi
Integrated into UniProtKB/Swiss-Prot: December 19, 2001
Last sequence update: December 19, 2001
Last modified: May 27, 2015
This is version 61 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

3D-structure, Direct protein sequencing

Documents

  1. PDB cross-references
    Index of Protein Data Bank (PDB) cross-references
  2. Scorpion potassium channel toxins
    Nomenclature of scorpion potassium channel toxins and list of entries
  3. SIMILARITY comments
    Index of protein domains and families

External Data

Dasty 3

Similar proteinsi

Links to similar proteins from the UniProt Reference Clusters (UniRef) at 100%, 90% and 50% sequence identity:
100%UniRef100 combines identical sequences and sub-fragments with 11 or more residues from any organism into Uniref entry.
90%UniRef90 is built by clustering UniRef100 sequences that have at least 90% sequence identity to, and 80% overlap with, the longest sequence (a.k.a seed sequence).
50%UniRef50 is built by clustering UniRef90 seed sequences that have at least 50% sequence identity to, and 80% overlap with, the longest sequence in the cluster.