[Ultrastructural organization of cytoplasmatic membrane of Anaerobacter polyendosporus studied by electron microscopic cryofractography].
Anaerobacter polyendosporus cells do not have typical mesosomes. However, the analysis of this anaerobic multispore bacterium by electron microscopic cryofractography showed that its cytoplasmic membrane contains specific intramembrane structures in the form of flat lamellar inverted lipid membranes tenths of nanometers to several microns in size. It was found that these structures are located in the hydrophobic interior between the outer and inner leaflets of the cytoplasmic membrane and do not contain intramembrane particles that are commonly present on freeze-fracture replicas. The flat inverted lipid membranes were revealed in bacterial cells cultivated under normal growth conditions, indicating the existence of a complex-type compartmentalization in biological membranes, which manifests itself in the formation of intramembrane compartments having the appearance of vesicles and inverted lipid membranes.
Duda
V I
VI
Skryabin Institute of Biochemistry and Physiology of Microorganisms, Russian Academy of Sciences, pr. Nauki 5, Pushchino, Moscow Oblast, 142290 Russia.
Suzina
N E
NE
Dmitriev
V V
VV
D001406:Bacillaceae / Q000648:ultrastructure*; D005614:Freeze Fracturing; D007425:Intracellular Membranes / Q000648:ultrastructure; D008854:Microscopy, Electron
Osobennosti ul'trastrukturnoĭ organizatsii tsitoplazmaticheskoĭ membrany Anaerobacter polyendosporus po dannym élektronno-mikroskopicheskoĭ kriofraktografii.