A tetracontapeptide corresponding to the entire amino acid sequence of a frog skin peptide, sauvagine, was synthesized by assembling eight peptide fragments of established purity followed by deprotection with 1 M trimethylsilyl trifluoromethanesulfonate-thioanisole in trifluoroacetic acid. The synthetic peptide stimulated secretion of immunoreactive corticotropin from rat pituitary cells and its potency was estimated to be equivalent to that of synthetic ovine corticotropin releasing factor. Synthetic sauvagine displayed long-lasting hypotensive action in rats.
通过将八个纯度已知的肽片段组合在一起,并在
三氟乙酸中用1 M三甲基
硅基
三氟甲磺酸酯-
硫代
苯甲醚进行脱保护,合成了与青蛙皮肤肽sauvagine的整个
氨基酸序列相对应的四十四肽。合成的肽刺激了老鼠垂体细胞分泌免疫反应性促
肾上腺皮质激素,其效力估计相当于合成
绵羊促肾上腺皮质激素释放因子。合成的sauvagine在大鼠体内显示出持久的降压作用。