2MUN

Solution structure of mu-SLPTX3-Ssm6a


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 30 
  • Conformers Submitted: 25 
  • Selection Criteria: target function 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Weaponization of a Hormone: Convergent Recruitment of Hyperglycemic Hormone into the Venom of Arthropod Predators.

Undheim, E.A.Grimm, L.L.Low, C.F.Morgenstern, D.Herzig, V.Zobel-Thropp, P.Pineda, S.S.Habib, R.Dziemborowicz, S.Fry, B.G.Nicholson, G.M.Binford, G.J.Mobli, M.King, G.F.

(2015) Structure 23: 1283-1292

  • DOI: 10.1016/j.str.2015.05.003
  • Primary Citation of Related Structures:  2KSL

  • PubMed Abstract: 
  • Arthropod venoms consist primarily of peptide toxins that are injected into their prey with devastating consequences. Venom proteins are thought to be recruited from endogenous body proteins and mutated to yield neofunctionalized toxins with remarkab ...

    Arthropod venoms consist primarily of peptide toxins that are injected into their prey with devastating consequences. Venom proteins are thought to be recruited from endogenous body proteins and mutated to yield neofunctionalized toxins with remarkable affinity for specific subtypes of ion channels and receptors. However, the evolutionary history of venom peptides remains poorly understood. Here we show that a neuropeptide hormone has been convergently recruited into the venom of spiders and centipedes and evolved into a highly stable toxin through divergent modification of the ancestral gene. High-resolution structures of representative hormone-derived toxins revealed they possess a unique structure and disulfide framework and that the key structural adaptation in weaponization of the ancestral hormone was loss of a C-terminal α helix, an adaptation that occurred independently in spiders and centipedes. Our results raise a new paradigm for toxin evolution and highlight the value of structural information in providing insight into protein evolution.


    Related Citations: 
    • Discovery of a selective NaV1.7 inhibitor from centipede venom with analgesic efficacy exceeding morphine in rodent pain models.
      Yang, S.,Xiao, Y.,Kang, D.,Liu, J.,Li, Y.,Undheim, E.A.,Klint, J.K.,Rong, M.,Lai, R.,King, G.F.
      (2013) Proc.Natl.Acad.Sci.USA 110: 17534


    Organizational Affiliation

    Institute for Molecular Bioscience, The University of Queensland, St Lucia, QLD 4072, Australia; Centre for Advanced Imaging, The University of Queensland, St Lucia, QLD 4072, Australia.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Mu-scoloptoxin-Ssm6a
A
46Scolopendra mutilansN/A
Find proteins for P0DL36 (Scolopendra mutilans)
Go to UniProtKB:  P0DL36
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 30 
  • Conformers Submitted: 25 
  • Selection Criteria: target function 

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2015-06-24
    Type: Initial release
  • Version 1.1: 2015-08-26
    Type: Database references