Intein is an intervening polypeptide which can catalytic self-cleavage from a pre-protein accompanied by the concomitant joining of the two flanking polypeptides (the extein) through a peptide bond.
蛋白质内一个蛋白质前体中的多
序列,可以催化自身从蛋白质前体中断裂,
两侧的蛋白质外显
连接成成熟的蛋白质。