HSP phylogeny?

[Paul Lepp]

A few months ago there was a discussion here about phylogenies based on
heat shock proteins and a number of other proteins.  From what I remember
it seemed that the argument was made that eukaryotes could have arisen from
the fusion of a gram pos. and an archea.  Could someone be so kind as to
pass along a few cites on the HSPs and the gram pos./archea  connection. 
Much appreciated.

Paul Lepp