前肽又稱蛋白質前體、前蛋白，是一種無活性的蛋白質或肽，可以通過翻譯後修飾變成活性的蛋白質或肽。一些細胞會分泌蛋白質前體。[1] 胰島素原就是一種前肽 ，它被切去一段無活性的C肽之後，便成為有活性的胰島素。[2]
參考文獻
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