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J Bacteriol. 1987 December; 169(12): 5445-5451

Cell-cycle-specific fluctuation in cytoplasmic membrane composition in aerobically grown Rhodospirillum rubrum.

Department of Biological Sciences, University of Wisconsin, Milwaukee 53201.

ABSTRACT

Aerobic growth with synchronous cell division was induced in Rhodospirillum rubrum by starvation methods. Cells were harvested at different points in the cell cycle. Analysis of the composition of the cell envelope prepared by differential centrifugation or density gradient-purified cytoplasmic membrane obtained from cells at different times indicated that the protein/phospholipid ratio fluctuated with the cell cycle. The protein/phospholipid ratio of cell envelope from selection-synchronized cells also fluctuated with the cell cycle. These studies indicate that the phenomenon of cell-cycle-dependent fluctuation in membrane composition is not restricted to the intracytoplasmic chromatophore membrane of phototrophic cells.

This article has been cited by other articles:

• Cheng, Y. S., Brantner, C. A., Tsapin, A., Collins, M. L. P. (2000). Role of the H Protein in Assembly of the Photochemical Reaction Center and Intracytoplasmic Membrane in Rhodospirillum rubrum. J. Bacteriol. 182: 1200-1207 [Abstract] [Full Text]