A 41-residue peptide corresponding to the entire amino acid sequence of ovine corticotropin releasing factor (oCRF) was synthesized by assembling ten peptide fragments of established purity, followed by hard-acid deprotection with 1 M trimethylsilyl trifluoromethanesulfonate in trifluoroacetic acid. β-Cycloheptylaspartate was employed to minimize base-catalyzed succinimide formation. When tested by in vivo assay, synthetic oCRF was as active as synthetic hCRF in terms of ability to release immunoreactive corticotropin.
通过组装十个已确定纯度的肽片段,然后用
三氟乙酸中的 1 M 三甲基甲
硅烷基
三氟甲磺酸酯进行硬酸脱保护,合成了对应于
绵羊促肾上腺皮质激素释放因子 (oCRF) 整个
氨基酸序列的 41 个残基肽。 β-环庚基
天冬氨酸用于最大限度地减少碱催化的琥珀
酰亚胺的形成。当通过体内测定进行测试时,合成的 oCRF 在释放免疫反应性促
肾上腺皮质激素的能力方面与合成的 hCRF 一样活跃。