response to stress

Any process that results in a change in state or activity of a cell or an organism (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of a disturbance in organismal or cellular homeostasis, usually, but not necessarily, exogenous (e.g. temperature, humidity, ionizing radiation).
GO Category: 
Total items in this category:  
RNA polymerase sigma-54 factor RpoN
Serine/threonine protein kinase (EC
Osmosensitive K+ channel histidine kinase KdpD (EC 2.7.3.-)
Two-component response regulator
Acetyl-CoA:Cys-GlcN-Ins acetyltransferase, mycothiol synthase MshD
Possible membrane protein