Cloning problem

Emir Khatipov khatipovNO at
Mon Sep 16 13:23:20 EST 2002

How do you know you ligation worked?

"JSUPolek" <jsupolek at> wrote in message
news:20020916134325.00833.00004307 at
> Does anyone know of reasons why DH5-alpha cells would be spitting out my
> in pUC 19?  If I'm not mistaken, DH5-alpha lacks endonuclease activity, so
> is it managing to kick it out?  I know the remaining plasmid is kept
because it
> grows on subsequent Amp+ plates.  Thanks

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