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J. Biol. Chem., Vol. 261, Issue 14, 6338-6345, May, 1986

Studies on the antibacterial activity of dodecylglycerol. Its limited metabolism and inhibition of glycerolipid and lipoteichoic acid biosynthesis in Streptococcus mutans BHT

JL Brissette, EA Cabacungan and RA Pieringer

Growth-inhibitory concentrations of racemic sn-1(3)-dodecylglycerol inhibit the incorporation of [14C] glycerol into lipids and lipoteichoic acid of Streptococcus mutans BHT and alter the per cent composition of the glycerolipids. Increases in phosphatidic acid and diphosphatidylglycerol (at the expense of phosphatidylglycerol) contribute the most to the change in lipid composition. No cellular lysis occurs under these conditions. Radioactive racemic sn-1(3)- dodecylglycerol is readily taken up by the cell and is metabolized primarily to lysophosphatidic acid and phosphatidic acid with smaller amounts converted to phosphatidylglycerol and diacylglycerol. The accumulation of phosphatidic acid and the loss of viability respond in parallel to different concentrations of dodecylglycerol. An increase in CTP is also observed which together with the increase in phosphatidic acid suggests a possible impairment in the synthesis of CDP- diacylglycerol.
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