These tools will no longer be maintained as of December 31, 2024. Archived website can be found here. PubMed4Hh GitHub repository can be found here. Contact NLM Customer Service if you have questions.


Pubmed for Handhelds

PUBMED FOR HANDHELDS

Search MEDLINE/PubMed

  • Title: TsTX-VII, a new toxin from Tityus serrulatus scorpion venom able to induce the release of neurotransmitters from rat brain synaptosomes not blocked by tetrodotoxin.
    Author: Sampaio SV, Coutinho-Netto J, Arantes EC, Toyama MH, Novello JC, Giglio JR.
    Journal: Biochem Mol Biol Int; 1997 May; 41(6):1255-63. PubMed ID: 9161721.
    Abstract:
    A procedure for the isolation of the toxin Tityustoxin VII (TsTX-VII) from Tityus serrulatus scorpion venom and its biochemical characterization is reported. This protein has a M(r) = 6,700-6,800, eight half-cystine residues accounting for four disulfide bridges and no His. Its N-terminal sequence GHZGYGS ... characterizes it as a new toxin, able to release glutamic acid and gamma aminobutyric acid from rat brain synaptosomes "in vitro". This release was also induced by the whole venom. Tetrodotoxin however blocked the effect of the whole venom but not that of TsTX-VII, thus suggesting that the releasing mechanism by TsTX-VII does not involve Na+ but perhaps K+ or Ca++ channels.
    [Abstract] [Full Text] [Related] [New Search]