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

处于等电点状态的蛋白加热时凝全、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.

蛋白含肽是一个蛋白中的多肽序列，可以催化自身从蛋白中断裂，使两侧的蛋白外显肽连接成成熟的蛋白。