J. Biol. Chem., Vol. 261, Issue 19, 8703-8707, Jul, 1986
Induction of heat shock proteins by canavanine in Tetrahymena. No change in ATP levels measured in vivo by NMR
KA Jones and RC Findly
During induction of the heat shock response by temperature jump in the
protozoan Tetrahymena, a decrease in cellular ATP levels occurs within
minutes and cells become thermotolerant. Treatment of Tetrahymena with the
amino acid analog canavanine also induces synthesis of heat shock proteins,
but more slowly than by temperature jump. No changes in cellular ATP levels
were observed during the course of canavanine induction of heat shock
protein synthesis measured in vivo by the technique of 31P NMR
spectroscopy. Tetrahymena do not become thermotolerant following induction
of heat shock protein synthesis with canavanine. However, Tetrahymena will
develop thermotolerance in the presence of canavanine if they are first
subjected to a nonlethal temperature jump before exposure to a normally
lethal temperature.