1HP3

C-TERMINAL TRUNCATION OF OMEGA-ATRACOTOXIN-HV2A (CT-HV2A)

  • Classification: TOXIN
  • Mutation(s): No 

  • Deposited: 2000-12-12 Released: 2002-12-11 
  • Deposition Author(s): Wang, X.-H., King, G.F.

Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 100 
  • Conformers Submitted: 20 
  • Selection Criteria: structures with the lowest energy 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Discovery and structure of a potent and highly specific blocker of insect calcium channels

Wang, X.-H.Connor, M.Wilson, D.Wilson, H.I.Nicholson, G.M.Smith, R.Shaw, D.Mackay, J.P.Alewood, P.F.Christie, M.J.King, G.F.

(2001) J Biol Chem 276: 40306-40312

  • DOI: 10.1074/jbc.M105206200
  • Primary Citation of Related Structures:  
    1G9P, 1HP3

  • PubMed Abstract: 
  • We have isolated a novel family of insect-selective neurotoxins that appear to be the most potent blockers of insect voltage-gated calcium channels reported to date. These toxins display exceptional phylogenetic specificity, with at least a 10,000-fold preference for insect versus vertebrate calcium channels ...

    We have isolated a novel family of insect-selective neurotoxins that appear to be the most potent blockers of insect voltage-gated calcium channels reported to date. These toxins display exceptional phylogenetic specificity, with at least a 10,000-fold preference for insect versus vertebrate calcium channels. The structure of one of the toxins reveals a highly structured, disulfide-rich core and a structurally disordered C-terminal extension that is essential for channel blocking activity. Weak structural/functional homology with omega-agatoxin-IVA/B, the prototypic inhibitor of vertebrate P-type calcium channels, suggests that these two toxin families might share a similar mechanism of action despite their vastly different phylogenetic specificities.


    Related Citations: 
    • Discovery and characterization of a family of insecticidal neurotoxins with a rare vicinal disulfide bridge.
      Wang, X.-H., Connor, M., Smith, R., Maciejewski, M.W., Howden, M.E.H., Nicholson, G.M.
      (2000) Nat Struct Biol 7: 505
    • 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

    Organizational Affiliation

    Department of Biochemistry, University of Connecticut Health Center, Farmington, CT 06032, USA.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
OMEGA-ATRACOTOXIN-HV2A A32N/AMutation(s): 0 
Find proteins for P82852 (Hadronyche versuta)
Explore P82852 
Go to UniProtKB:  P82852
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 100 
  • Conformers Submitted: 20 
  • Selection Criteria: structures with the lowest energy 
  • OLDERADO: 1HP3 Olderado

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2002-12-11
    Type: Initial release
  • Version 1.1: 2008-04-27
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance