Metabolism of the Glucosyl Diglycerides and Phosphatidylglucose of Staphylococcus aureus
AUTOR(ES)
Short, Steven A.
RESUMO
A glucose containing lipid, phosphatidylglucose (probably 3-sn-phosphatidyl-1′-glucose) and a lipid tentatively identified as phosphatidylethanolamine have been characterized in the lipids of Staphylococcus aureus. These lipids together comprise less than 2% of the total phospholipids of exponentially growing S. aureus and accumulate to 14% of the total phospholipid in stationary-phase cells. These lipids lost no 32P when cells grown with H332PO4 were transferred to nonradioactive medium during the exponential growth phase. This was in marked contrast to the other phospholipids which lost 32P rapidly. The loss of 32P from phosphatidic acid and cardiolipin in exponentially growing cells was biphasic, suggesting heterogeneity of phospholipid phosphate metabolism. The mono- and diglucosyl diglycerides showed a rapid loss of 14C-glucose during growth in nonradioactive medium but no loss of 14C from the fatty acids of these lipids. The 14C in the glucose and fatty acids of the glucosyl diglycerides was derived from glucose.
ACESSO AO ARTIGO
http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=248191Documentos Relacionados
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