Lipids in cytoplasmic membranes of Micrococcus lysodeikticus
Oparin, A.I.; Gel'man, N.S.; Zhukova, I.G.; Shvets, V.I.; Chergadze, Y.N.; Tsfasman, I.M.
Doklady Akademii Nauk SSSR 152(1): 228-230
In most organisms, electron-transfer enzymes occur in mito-chondrial membranes; whereas in bacteria, they occur in cytoplasmic membranes. By chromatographic and spectrophotographic technics, the cytoplasmic membrane of M. lysodeictus contains the same phospholipids (phosphatydil-inostiol, cardiolipin and glycolipid) and electron-transfer enzymes as the mitochondrial membranes of other organisms. By fractionation it was possible to obtain carotenoids in addition to phospholipids and dehydrogenases. The electron-transfer enzymes in the cytoplasmic membrane may form complexes which are stabilized by a phospholipid-protein interaction similar to that which occurs in mitochondrial membranes. Bibliography with 13 references.