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  • Title: The inhibition of phospholipid synthesis in escherichia coli by phenethyl alcohol.
    Author: Nunn WD.
    Journal: Biochim Biophys Acta; 1975 Mar 24; 380(3):403-13. PubMed ID: 49194.
    Abstract:
    The kinetics of lipid metabolism during phenethyl alcohol treatment of Escherichia coli were examined. Phenethyl alcohol at a non-bacteriostatic concentration reduces the accumulation of [32-P] phosphate into phospholipids and alters the phospholipid composition of the cell membrane. The changes in phospholipid composition are a result of the inhibitory effect of phenethyl alcohol on the rates of synthesis of the individual phospholipids. The inhibition in the rate of phosphatidylethanolamine synthesis by phenethyl alcohol was twice the inhibition in the rate of phosphatidyglycerol synthesis. The de novo rate of cardiolipin synthesis was only slightly inhibited. However, net cardiolipin accumulation increased during phenethyl alcohol treatment due to a more rapid turnover of phosphatidylglycerol to cardiolipin. Phenethyl alcohol also altered the fatty acid composition of the cell as a result of its inhibitory effect on the rate of individual fatty acid synthesis. However, the inhibition of phospholipid synthesis was not reversed by fatty acid supplementation of phenethyl alcohol treated cells. This result indicates that phenethyl alcohol does not inhibit phospholipid synthesis solely at the level of fatty acid synthesis.
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