Summary of strataclean prep protocol

[Daniel Kim]

Hello:

I have been following the Strataclean discussion a little late.  Was the 
original intent to find a solid phase method to remove proteins from 
nucleic acid mixtures?

If so, then you might want to try adsorbing proteins to PVDF membrane.  I 
believe S&S has a microfuge spin cup in their Ultra-Free line that has a 
PVDF membrane for this express purpose.  The paper cited in the 
instruction book describes an experiment in which RNAse A is loaded into 
a solution, then passed through the PVDF.  RNA added to the flow-through 
is not degraded, even after extensive incubation, showing that the RNAse 
is completely removed by this procedure.

Daniel Kim
(Don't ask me for the citation . . . I can't remember it.  Call S&S 
instead.)