ISDA

Deposition Date 1999-12-08

Release Date 2000-09-15

Last Version Date 2024-11-06

Entry Detail

PDB ID:

1DL0

Keywords:

TOXIN

Title:

SOLUTION STRUCTURE OF THE INSECTICIDAL NEUROTOXIN J-ATRACOTOXIN-HV1C

Biological Source:

Source Organism:

(Taxon ID: )

Method Details:

Experimental Method:

SOLUTION NMR

Conformers Calculated:

100

Conformers Submitted:

Selection Criteria:

structures with the lowest energy

Download Validation Report

Macromolecular Entities

Protein Blast

Polymer Type:polypeptide(L)
Molecule:J-ATRACOTOXIN-HV1C
Chain IDs:A
Chain Length:37
Number of Molecules:1
Biological Source:

UniProt ID:P82228 Pfam ID:PF07945

Ligand Molecules

Primary Citation

Discovery and characterization of a family of insecticidal neurotoxins with a rare vicinal disulfide bridge.

Wang, X, Connor, M, Smith, R, Maciejewski, M.W, Howden, M.E, Nicholson, G.M, Christie, M.J, King, G.F, Fletcher, J.I, Smith, R, O'Donoghue, S.I, Nilges, M, Connor, M, Howden, M.E.H, Christie, M.J, King, G.F.Show

Nat.Struct.Biol. 7 505 513 (2000)

PMID: 10881200 DOI: 10.1038/75921

Abstact

We have isolated a family of insect-selective neurotoxins from the venom of the Australian funnel-web spider that appear to be good candidates for biopesticide engineering. These peptides, which we have named the Janus-faced atracotoxins (J-ACTXs), each contain 36 or 37 residues, with four disulfide bridges, and they show no homology to any sequences in the protein/DNA databases. The three-dimensional structure of one of these toxins reveals an extremely rare vicinal disulfide bridge that we demonstrate to be critical for insecticidal activity. We propose that J-ACTX comprises an ancestral protein fold that we refer to as the disulfide-directed beta-hairpin.

Legend

Protein

Chemical

Disease

Primary Citation of related structures