mastoparan

mastoparan

A peptide toxin from wasp (Vespa simillima xanthoptera) venom, which activates heterotrimeric G proteins and promotes binding of beta-COP to Golgi membrance in vitro.
References in periodicals archive ?
For ATP released from cells, after CPZ 50 [micro]M incubation, erythrocytes were diluted 1:100 and incubated with the direct activator of Gi, Mastoparan 7 (4 [micro]M Mas 7).
5) Three venom components--hyaluronidase, mastoparan, and phospholipase A1--have been demonstrated to stimulate prostaglandin E2 and weakly enhance IgE and IgG1 in mice, (6,7) and these may have stimulated the humoral response in this flamingo.
Inflammatory role of two venom components of yellow jackets (Vespula vulgaris): a mast cell degranulating peptide mastoparan and phospholipase Al.
103) The stimulatory effect of mastoparan could be reproduced by synthetic peptides corresponding to the sequences of intracellular segments adjacent to the transmembrane helices of muscarinic receptors in I2, I3 and the carboxyterminal tail.
Interaction of substance P, compound 48180 and mastoparan with [alpha]-subunit C-terminal of G protein.
Stock solutions of suramin, guanosine, mastoparan, guanylyl, caffeine, and TMB-8 hydrochloride were prepared in distilled water; K252a, bisindolylmaleimide I, TPA, indolactam V, 1,2 didecanoyl-rac-glycerol, nifedipine, ionophore A23187 free acid, cyclopiazonic acid, and thapsigargin were dissolved in DMSO.