ISDA

Deposition Date 2008-06-18

Release Date 2008-12-09

Last Version Date 2024-11-13

Entry Detail

PDB ID:

2K4U

Keywords:

TOXIN

Title:

Solution structure of the SCORPION TOXIN ADWX-1

Biological Source:

Source Organism:

Mesobuthus martensii (Taxon ID: 34649)

Host Organism:

Escherichia coli

Method Details:

Experimental Method:

SOLUTION NMR

Conformers Calculated:

200

Conformers Submitted:

Selection Criteria:

target function

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Macromolecular Entities

Protein Blast

Polymer Type:polypeptide(L)
Molecule:Potassium channel toxin alpha-KTx 3.6
Mutations:G11R,I28T,D33H
Chain IDs:A
Chain Length:37
Number of Molecules:1
Biological Source:Mesobuthus martensii

UniProt ID:Q9NII7 Pfam ID:PF00451

Primary Citation

Different Residues in Channel Turret Determining the Selectivity of ADWX-1 Inhibitor Peptide between Kv1.1 and Kv1.3 Channels

Yin, S.J, Jiang, L, Yi, H, Han, S, Yang, D.W, Liu, M.L, Liu, H, Cao, Z.J, Wu, Y.L, Li, W.X.Show

J.Proteome Res. 7 4890 4897 (2008)

PMID: 18937510 DOI: 10.1021/pr800494a

Abstact

The low selectivity of Kv1 peptide inhibitors for specific isoforms makes them poor candidates for the development of theraputics. Using combined approaches, we showed that the Kv1 turret is the critical determinant for ADWX-1 peptide inhibitor selectivity of Kv1.3 over Kv1.1. Mutation of Kv1.1 turret residues to match the sequence of Kv1.3 lead to increased inhibition of Kv1.1 activity. These studies may lead to improvements in peptide inhibitor drug development.

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Primary Citation of related structures