2.3.4 Cytoplasmic membrane
2.3.4.1 Properties and functions The cell contents (cytoplasm) need to be isolated from the external environment, but at the same time nutrients must be transported into the cell. The cytoplasmic membrane mediates not only these functions but also other important physiological activities. These ‘ include solute transport (Chapter 3), oxidative phosphorylation through electron transport (Section 5.8), photosynthetic electron transport in photosynthetic prokaryotes (Section '1 1.4), maintenance of electrochemical gradients and ATP synthesis (Section 5.8.4:), motility (Section 12.2.11), signal transduction (Section 12.2), synthesis of cell surface structures and protein secretion (Section 3.8). The cytoplasmic membrane consists of phospholipid (35—50%) and protein (50—65%). The phospholipid is responsible for the isolation property of the membrane with the various proteins being involved in the rest of the membrane functions.
2.3.4 Cytoplasmic membrane 2.3.4.1 Properties and functions The cell contents (cytoplasm) need to be isolated from the external environment, but at the same time nutrients must be transported into the cell. The cytoplasmic membrane mediates not only these functions but also other important physiological activities. These ‘ include solute transport (Chapter 3), oxidative phosphorylation through electron transport (Section 5.8), photosynthetic electron transport in photosynthetic prokaryotes (Section '1 1.4), maintenance of electrochemical gradients and ATP synthesis (Section 5.8.4:), motility (Section 12.2.11), signal transduction (Section 12.2), synthesis of cell surface structures and protein secretion (Section 3.8). The cytoplasmic membrane consists of phospholipid (35—50%) and protein (50—65%). The phospholipid is responsible for the isolation property of the membrane with the various proteins being involved in the rest of the membrane functions.
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