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Sarafotoxin, a novel vasoconstrictor peptide: phosphoinositide hydrolysis in rat heart and brain.
Sarafotoxins, a group of 21-residue cardiotoxic peptides from snake venom that induce coronary vasoconstriction, show high-affinity binding to rat atrial and brain membranes and activate the…
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Endothelins are more sensitive than sarafotoxins to neutral endopeptidase: possible physiological significance.
TLDR
In vitro findings may indicate a regulatory role of NEP (or similar enzymes) in the physiological inactivation of ETs and help to explain why under certain physiological conditions ETs may be less toxic than SRTXs.
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Three apparent receptor subtypes for the endothelin/sarafotoxin family
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REGULATION OF PROTEIN SYNTHESIS IN THE VENOM GLAND OF VIPERID SNAKES
TLDR
Intact glands and gland slices of V ammodytes and V palaestinae, taken from snakes a few days after milking, incorporated [14C]amino acids into proteins in vitro at a rate higher than that of unmilked glands.
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Positive Darwinian selection in Vipera palaestinae phospholipase A2 genes is unexpectedly limited to the third exon.
TLDR
Comparison of V. palaestinae PLA2 genes with other ViperidaePLA2 genes has shown that the structural organization of the genes and the nucleotide sequence of all introns and flanking regions are highly conserved, whereas the third exon clearly shows a higher number of amino acid replacements, an indication of positive Darwinian selection.
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VENOM GLANDS, VENOM SYNTHESIS, VENOM SECRETION AND EVOLUTION
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THE FUNCTION OF 3'5' CYCLIC AMP IN ENZYME SECRETION.
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Functional endothelin/sarafotoxin receptors in rat heart myocytes: structure-activity relationships and receptor subtypes.
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The two-component toxin of Vipera palaestinae: contribution of phospholipase A to its activity.
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Multiple molecular forms of snake venom phosphodiesterase from Vipera palastinae.
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