The peptide bond is the same as the imido bond of biuret.

处于等电点状态蛋白质凝固最完全、最迅速。

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.

蛋白质含是一个蛋白质前体中序列，可以催化自身从蛋白质前体中断裂，使两侧蛋白质外显连接成成熟蛋白质。