recombinant plasmid screening

Tom Buckley tbuckley at
Tue Mar 11 16:02:24 EST 1997

I am looking for a protocol for screening recombinant plasmids based on 
plasmid size comparison on agarose gel. I used to have a very simple 
method (not the one from promega) using a solution called cracking 
buffer. The cracking buffer contains NaOH, SDS and a cocktail of 
different salts. After cells from an overnight culture have been mixed 
and stood 5-10 min at roomtemp, the mixture can  be loaded directly on 
gel without any further treatment. Unfortunately I somehow have lost this 
protocol and therefor would be very happy any of you can send me a copy 
of it. Thank a lot in advance.
With regards.
Dzung Diep

My email adress: dbdiep at

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