中文摘要：

概述了液泡加工酶VPE的分类、特性及成熟方式，分析其对液泡功能的调控，阐述了该酶在液泡介导的植物防御机制中的作用。指出VPE通过自催化成熟，其分为3个亚家族：种子型VPE、营养型VPE和新型VPE，其中，种子型VPE介导储藏蛋白质的加工；营养型和新型VPE调控植物细胞程序性死亡。

英文摘要：

The classification, characters and maturation methods of VPEs were sum- marized, and its regulation function to vacuolar was also analyzed. Furthermore, effects of the enzyme in vacuolar-mediated plant defense mechanism were discussed to point out that VPEs were divided into 3 subfamilies via autocatalytic mature including seed-type VPE, vegetative-type VPE and new-type VPE. Especially, seed- type VPE mediated the process of storage protein, while vegetative-type VPE and new-type VPE regulated and controlled programmed death of plant cells.