1HP3

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


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

  • 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-fo ...

    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: 
    • 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.Mol.Biol. 4: 559
    • 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.Mol.Biol. 7: 505


    Organizational Affiliation

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




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
OMEGA-ATRACOTOXIN-HV2A
A
32Hadronyche versutaN/A
Find proteins for P82852 (Hadronyche versuta)
Go to UniProtKB:  P82852
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 or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

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