HSP - unique?

[Edan Foley]

Recently as part of my studies I came across heat shock proteins.

After a lengthy period of head-scratching and asking around I 
couldn't get a satisfactory answer to my question.

The Question?

Oh yeah..the question.
Does anyone know if the production of HSPs is the only examples 
of a biological pathway that is 'kicked' into action as a direct 
response to an external heat stimulus?