Intracellular Motility Apparatus of Halobacteria:Electron Microscopic Study

摘要

The intracellular disc-like lamellar structure (DLS) earlier detected in the motility apparatus ofHalobacterum salinarum and details of insertion of proximal ends of flagella into DLS were studied using elec-tron microscopy. Analysis of ultrathin sections obtained after fixation with potassium permanganate establishedthat DLS, absent in bacteria, contains a membrane-like structure. Electron microscopic studies of cell ghostsobtained by mild cytolysis in low-NaCI solutions shed additional light as on details of DLS structure and so onlocalization of flagellar proximal ends. Structural organization of the motility apparatus of bacteria and archae-bacteria as representatives of two distinct taxonomic domains is discussed.