Biological Assembly 1  

 3D View: Structure | 1D-3D View | Validation Report

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 4.06 kDa 
• Atom Count: 278 
• Modelled Residue Count: 37 
• Deposited Residue Count: 37 
• Unique protein chains: 1

1AXH

ATRACOTOXIN-HVI FROM HADRONYCHE VERSUTA (AUSTRALIAN FUNNEL-WEB SPIDER, NMR, 20 STRUCTURES

• PDB DOI: 10.2210/pdb1AXH/pdb
• BMRB: 5702
• BMRB: 6192
• BMRB: 6194
• BMRB: 4233

• Classification: NEUROTOXIN
• Organism(s): Hadronyche versuta
• Mutation(s): No 


• Deposited: 1996-11-04 Released: 1997-11-12 
• Deposition Author(s): Fletcher, J.I., O'Donoghue, S.I., Nilges, M., King, G.F.

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Experimental Data Snapshot

• Method: SOLUTION NMR
• Conformers Calculated: 100 
• Conformers Submitted: 20 
• Selection Criteria: LOWEST RESIDUAL RESTRAINT VIOLATIONS 

Literature

The structure of a novel insecticidal neurotoxin, omega-atracotoxin-HV1, from the venom of an Australian funnel web spider.

Fletcher, J.I., Smith, R., O'Donoghue, S.I., Nilges, M., Connor, M., Howden, M.E., Christie, M.J., King, G.F.

(1997) Nat Struct Biol 4: 559-566

• PubMed: 9228949 
• DOI: 10.1038/nsb0797-559
• Primary Citation of Related Structures:  
  1AXH


• PubMed Abstract: 
  

A family of potent insecticidal toxins has recently been isolated from the venom of Australian funnel web spiders. Among these is the 37-residue peptide omega-atracotoxin-HV1 (omega-ACTX-HV1) from Hadronyche versuta. We have chemically synthesized and folded omega-ACTX-HV1, shown that it is neurotoxic, ascertained its disulphide bonding pattern, and determined its three-dimensional solution structure using NMR spectroscopy. The structure consists of a solvent-accessible beta-hairpin protruding from a disulphide-bonded globular core comprising four beta-turns. The three intramolecular disulphide bonds from a cystine knot motif similar to that seen in several other neurotoxic peptides. Despite limited sequence identity, omega-ACTX-HV1 displays significant structural homology with the omega-agatoxins and omega-conotoxins, both of which are vertebrate calcium channel antagonists; however, in contrast with these toxins, we show that omega-ACTX-HV1 inhibits insect, but not mammalian, voltage-gated calcium channel currents.

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Related Citations: 

• Insecticidal Toxins Derived from Funnel Web (Atrax or Hadronyche) Spiders
  Atkinson, R.K., Tyler, M.I., Vonarx, E.J., Howden, M.E.H.
  (1993) Patent --: --

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Organizational Affiliation: 

Department of Biochemistry, University of Sydney, New South Wales, Australia.

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
ATRACOTOXIN-HVI	A	37	Hadronyche versuta	Mutation(s): 0
UniProt
Find proteins for P56207 (Hadronyche versuta) Explore P56207  Go to UniProtKB:  P56207

Experimental Data & Validation

Experimental Data

• Method: SOLUTION NMR
• Conformers Calculated: 100 
• Conformers Submitted: 20 
• Selection Criteria: LOWEST RESIDUAL RESTRAINT VIOLATIONS 
• OLDERADO: 1AXH Olderado

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 1996-11-04 
• Released Date: 1997-11-12 
Deposition Author(s): Fletcher, J.I., O'Donoghue, S.I., Nilges, M., King, G.F.

Revision History  

• Version 1.0: 1997-11-12
  Type: Initial release
  
• Version 1.1: 2008-03-24
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance
• Version 1.3: 2017-11-29
  Changes: Derived calculations, Other
• Version 1.4: 2021-02-03
  Changes: Database references