Biotin/streptavidin hybrid-DNA purification

[gary vanzin]

I'm looking for a reference/protocol to purify hybrid DNA using a 
biotin/streptavidin system.  I'm screening 6900 arabidopsis plants, 
each containing 1-4 insertional mutations (T-DNA).  I would like to 
enrich my DNA preps for the T-DNA, so I can combine 100,500, or maybe 
even all 6900 DNA preps during the subsequent PCR screen.  I believe I 
can do this using biotinylated T-DNA as a probe, then doing 
hybrid-select, and purification over a streptavidin column.  Any Ideas? 
 Anybody know how well streptavidin coated dynalbeads work?

Gary
gfv94001 at uconnvm.uconn.edu