一个由多组份蛋白复合体形成的跨膜孔状通道称为Ⅲ型分泌系统 ,它是多种动植物病原菌用来分泌蛋白、或把这些蛋白直接注入宿主细胞以起始生化信息传导的结构。致病性耶尔森氏菌质粒编码的Ｙｏｐ系统是Ⅲ型分泌系统的典型代表 ,主要由四部分组成 :(1)Ｙｓｃ分泌装置 ;(2 )一套转 A transmembrane pore-like channel formed by a multi-component protein complex called the type III secretion system is the structure of many plant and animal pathogens that secrete proteins or inject these proteins directly into the host cell to initiate biochemical message transduction . The Yop system encoded by the pathogenic Yersinia plasmid is a typical representative of the type III secretion system and consists of four main components: (1) Ysc secretion device; (2)