ISDA: 2LDS

Deposition Date 2011-06-01

Release Date 2011-09-14

Last Version Date 2024-10-30

Entry Detail

PDB ID:

2LDS

Keywords:

TOXIN

Title:

Solution Structure of a Short-chain LaIT1 from the Venom of Scorpion Liocheles australasiae

Biological Source:

Source Organism:

Liocheles australasiae (Taxon ID: 431266)

Host Organism:

Escherichia coli

Method Details:

Experimental Method:

SOLUTION NMR

Conformers Calculated:

200

Conformers Submitted:

Selection Criteria:

structures with the lowest energy

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Macromolecular Entities

Structures with similar UniProt ID

Protein Blast

Polymer Type:polypeptide(L)
Molecule:Insecticidal toxin LaIT1
Chain IDs:A
Chain Length:36
Number of Molecules:1
Biological Source:Liocheles australasiae

UniProt ID:P0C5F2

Ligand Molecules

Primary Citation

Solution structure of a short-chain insecticidal toxin LaIT1 from the venom of scorpion Liocheles australasiae.

Horita, S, Matsushita, N, Kawachi, T, Ayabe, R, Miyashita, M, Miyakawa, T, Nakagawa, Y, Nagata, K, Miyagawa, H, Tanokura, M.Show

Biochem.Biophys.Res.Commun. 411 738 744 (2011)

PMID: 21782787 DOI: 10.1016/j.bbrc.2011.07.016

Abstact

The solution structure of an insecticidal toxin LaIT1, a 36-residue peptide with a unique amino-acid sequence and two disulfide bonds, isolated from the venom of the scorpion Liocheles australasiae was determined by heteronuclear NMR spectroscopy. Structural similarity search showed that LaIT1 exhibits an inhibitory cystine knot (ICK)-like fold, which usually contains three or more disulfide bonds. Mutational analysis has revealed that two Arg residues of LaIT1, Arg(13) and Arg(15), play significant roles in insecticidal activity.

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