Further evidence for changes in the level of palmitoyl-CoA desaturase during thermal adaptation in Tetrahymena pyriformis.
Palmitoyl-CoA desaturase activity in microsomes was increased up to about 4-fold within 2 h after temperature shift from 39.5 to 15 degrees C. Compared with control cells, cycloheximide-treated cells indicated no induction of palmitoyl-CoA desaturase by a decrease in temperature. The results suggest that temperature acclimation requires an increase in the level of the desaturase enzyme content.
D000222:Adaptation, Physiological; D003513:Cycloheximide / Q000494:pharmacology; D044943:Fatty Acid Desaturases / Q000378:metabolism*; D005231:Fatty Acids, Unsaturated / Q000378:metabolism; D008861:Microsomes / Q000201:enzymology; D010171:Palmitoyl Coenzyme A / Q000378:metabolism; D013696:Temperature; D013769:Tetrahymena pyriformis / Q000201:enzymology*
D005231:Fatty Acids, Unsaturated; D010171:Palmitoyl Coenzyme A; D003513:Cycloheximide; D044943:Fatty Acid Desaturases; C022311:palmitoyl-CoA desaturase