TABLE 5.

Comparison of regulatory strategies for the heat shock response

Heat shock response characteristic	Regulatory strategy in:
	A. tumefaciens	E. coli
Induction of RpoH synthesis	Transcriptional level (autogenous control)	Translational level
Control of RpoH activity	Activation during the induction phase	Inhibition during the adaptation phase
Control of RpoH stability	Destabilization during the adaptation phase	Stabilization during the induction phase
Induction of other HSP	Primarily caused by activation of RpoH	Primarily caused by increased RpoH level