ISDA

Entry Detail

PDB ID:

6GGZ

Keywords:

TOXIN

Title:

NMR structure of the scorpion toxin AmmTx3

Biological Source:

Source Organism:

Androctonus mauritanicus mauritanicus

PDB Version:

Deposition Date:

2018-05-04

Release Date:

2019-01-30

Method Details:

Experimental Method:

SOLUTION NMR

Conformers Calculated:

250

Conformers Submitted:

Selection Criteria:

structures with the lowest energy

Download Validation Report

Macromolecular Entities

Protein Blast

Polymer Type:polypeptide(L)
Description:Potassium channel toxin alpha-KTx 15.3
Chain IDs:A (auth: 1)
Chain Length:37
Number of Molecules:1
Biological Source:Androctonus mauritanicus mauritanicus

UniProt ID:P60208 Pfam ID:PF00451

Modified Residue

Compound ID	Chain ID	Parent Comp ID	Details	2D Image
PCA	A	GLN	modified residue

Ligand Molecules

Primary Citation

Synthesis by native chemical ligation and characterization of the scorpion toxin AmmTx3.

Zoukimian, C, Meudal, H, De Waard, S, Ouares, K.A, Nicolas, S, Canepari, M, Beroud, R, Landon, C, De Waard, M, Boturyn, D.Show

Bioorg. Med. Chem. 27 247 253 (2019)

PMID: 30529150 DOI: 10.1016/j.bmc.2018.12.009

Abstact

The scorpion toxin AmmTx3 is a specific blocker of Kv4 channels. It was shown to have interesting potential for neurological disorders. In this study, we report the first chemical synthesis of AmmTx3 by using the native chemical ligation strategy and validate its biological activity. We determined its 3D structure by nuclear magnetic resonance spectroscopy, and pointed out that AmmTx3 possesses the well-known CSαβ structural motif, which is found in a large number of scorpion toxins. Overall, this study establishes an easy synthetic access to biologically active AmmTx3 toxin.

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Primary Citation of related structures