Cell membrane of bacteria

Hopanoids Membrane stabilizing chemical components found in the cell membranes of bacteria. 

The primary mechanism of the action of beta-lactam antibiotics is the inhibition of synthesis of cell membranes of bacteria, which causes them to quickly die. Their initial action is to initiate the work of autolytic enzymes, which destroy cell membranes and cause lysis of the bacteria. 

The structure of the cell membrane of bacteria is unique and does not have any mammalian analogs. The cell membrane protects bacteria cells from lysis, which can occur as a result of different osmotic pressures between the cytoplasm and the surrounding medium. 

In this manner, antibiotic ionophores like nonactin transport ions across a cell membrane of bacteria. This disrupts the normal ionic balance in the cell, thus interfering with cell function and causing the bacteria to die. 

Bacteriolysis. Bacteriolysis is a complement-mediated reaction. The last Five proteins in the cascade scif-asscmble to produce a membrane attack complex (hat disrupts the cell membranes of bacteria, acting like bacitracin or amphotericin B. The cell membranes lose integrity, cell contents leak... 

Reflect and Apply Suggest a reason why the cell membranes of bacteria grown at 20°C tend to have a higher proportion of unsaturated fatty acids than the membranes of bacteria of the same species grown at 37°C. In other words, the bacteria grown at 37°C have a higher proportion of saturated fatty acids in their cell membranes. 

In his chemiosmotic theory [52,53] Mitchell proposes that energy derived from respiratory activity, or from substrate level oxidation ( anaerobic metabolism) produces an electrochemical potential ( protonmotive force ) across the cell membrane of bacteria, mitochondria, and chloroplasts. The total protonmotive force is made up from two components an electrical potential gradient and a chemical gradient of protons (i.e. a pH gradient) across the membrane. The protonmotive force provides the energy for the active transport of sugars and amino... 

Bacitracin A (D 23) Substance transporting Mn-+ through the cell membrane of bacteria... 

Further, we would like to speculate that the initiation of DNA synthesis is mediated by some reaction of the nuclear membrane, analogous to that of the cell membrane of bacteria which, according to Jacob et al. (1963), triggers the coordinated replication of then-chromosomes and episomes. 

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