Department of Microbiology, University of Connecticut Health Center, Farmington, Connecticut 06032.
Proc Natl Acad Sci U S A. 1983 Mar;80(5):1372-6. doi: 10.1073/pnas.80.5.1372.
Evidence is presented that the site of cell division in Salmonella typhimurium is flanked by two circumferential zones of cell envelope differentiation, the periseptal annuli, which separate the division site from the remainder of the cell envelope. Each annulus is composed of a continuous structure in which the membranous elements of the cell envelope are closely associated with the murein cytoskeleton. The paired annuli appear early in the division process and the region between them defines a new cellular domain, the periseptal compartment, within which the division septum is formed.
有证据表明，鼠伤寒沙门氏菌的细胞分裂部位两侧是两个细胞包膜分化的周向区域，即周质环，它将分裂部位与细胞包膜的其余部分隔开。每个环都是由一个连续的结构组成，其中细胞包膜的膜元件与肽聚糖细胞骨架紧密相关。这两个成对的环在分裂过程中很早就出现了，它们之间的区域定义了一个新的细胞区域，即周质隔室，其中形成了分裂隔膜。
