Affiliation:
1. Biochemistry Department, University of Kentucky Medical Center, Lexington, Kentucky 40506
Abstract
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
32
P when cells grown with H
3
32
PO
4
were transferred to nonradioactive medium during the exponential growth phase. This was in marked contrast to the other phospholipids which lost
32
P rapidly. The loss of
32
P 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
14
C-glucose during growth in nonradioactive medium but no loss of
14
C from the fatty acids of these lipids. The
14
C in the glucose and fatty acids of the glucosyl diglycerides was derived from glucose.
Publisher
American Society for Microbiology
Subject
Molecular Biology,Microbiology
Cited by
59 articles.
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