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Enzymatic deacylation of lipoteichoic acid by protoplasts of Streptococcus faecium (Streptococcus faecalis ATCC 9790).

By R E Kessler and G D Shockman


High-molecular-weight, micellar lipoteichoic acid (LTA) was converted to a lower-molecular-weight, apparently deacylated polymer when the former was incubated in the presence of growing protoplasts of Streptococcus faecium (S. faecalis ATCC 9790), but not when incubated in fresh or spent protoplast medium. The mobility of the low-molecular-weight polymer upon agarose gel electrophoresis was indistinguishable from that of native extracellular lipoteichoic acid LTA(X) from this organism or from chemically deacylated LTA. Native LTA(X) was shown to contain less than one fatty acid equivalent per 18 LTA(X) molecules, in contrast to the 4:1 ratio of fatty acids to polyglycerolphosphate chains in micellar LTA

Topics: Research Article
Year: 1979
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Provided by: PubMed Central
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