title: Thermal modulation of fatty acid synthesis in Escherichia coli does not involve de novo enzyme synthesis.
abstract: An increased ratio of unsaturated to saturated fatty acids was synthesized within 30 s after shift of Escherichia coli K-12 from 42 degrees C to 24 degrees C. This was more than 10-fold faster than the induction of beta-galactosidase. Inhibition of ribonucleic acid or protein synthesis had no effect on the response of fatty acid synthesis to temperature shift.
mesh_terms: D001426:Bacterial Proteins / Q000096:biosynthesis; D004790:Enzyme Induction; D004926:Escherichia coli / Q000378:metabolism*; D005227:Fatty Acids / Q000096:biosynthesis*; D005231:Fatty Acids, Unsaturated / Q000096:biosynthesis*; D005696:Galactosidases / Q000096:biosynthesis*; D012329:RNA, Bacterial / Q000096:biosynthesis; D013696:Temperature; D001616:beta-Galactosidase / Q000096:biosynthesis*
chemical_list: D001426:Bacterial Proteins; D005227:Fatty Acids; D005231:Fatty Acids, Unsaturated; D012329:RNA, Bacterial; D005696:Galactosidases; D001616:beta-Galactosidase