Inhibition of lipid synthesis in Escherichia coli cells by the antibiotic cerulenin.

Abstract:

:The antibiotic cerulenin markedly inhibits the growth of Escherichia coli. The effects of the antibiotic on cellular syntheses were studied by measuring the incorporation of labeled precursors into lipids and macromolecules. During the first 40 min after the addition of cerulenin to a culture of growing cells, lipid synthesis was inhibited more than 90% and ribonucleic acid and deoxyribonucleic acid synthesis about 25%, whereas protein synthesis was not affected. At later periods after cerulenin addition (1 to 2 h), the inhibition of cell growth and of lipid and protein synthesis was complete. Upon removal of cerulenin from the culture, growth was restored and lipid synthesis resumed more rapidly than did the synthesis of protein. Addition of both palmitate and oleate, but not of either fatty acid alone, reversed the inhibition of growth by cerulenin. These findings support the conclusion that the antibiotic effects of cerulenin are due to a specific inhibition of fatty acid synthesis.

authors

Goldberg I,Walker JR,Bloch K

doi

10.1128/aac.3.5.549

subject

Has Abstract

pub_date

1973-05-01 00:00:00

pages

549-54

issue

5

eissn

0066-4804

issn

1098-6596

journal_volume

3

pub_type

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