Protein extraction from RNAlater - (Jul/07/2014 )

I have some samples preserved in RNAlater, and I need to extract protein from these but have not been able to find a good protocol. Does anyone know where I could find one?

Thanks. 

Googling brings up a plethora of detailed article and notes from the manufacturer...

http://www.ncbi.nlm.nih.gov/pubmed/12459147