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

处于等电点状态的白质加热时凝固完全、。

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.

白质含肽是白质前体中的多肽序列，可以催化自身从白质前体中断裂，使两侧的白质外显肽连接成成熟的白质。