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DNA dissolved in DMSO instead of H2O


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#1 jah

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Posted 18 June 2009 - 06:01 AM

So, I had a moment of stupid this AM.  I had done a couple of midipreps that for transfection into some mammalian cells.  I did Phenol-chloroform extraction and ethanol precipitation overnight @-80'C. This morning I spun the DNA and washed with 70%EtOH, and was happy to see a nice, big pellet :lol: .   And then.......it happened.  I grabbed the eppy of DMSO to the right of the eppy of H2O, and proceeded to dissolve the pellet in DMSO instead of water.  D'oh! :lol: That's what I get for trying to do some work before coffee

So now I'm in a pinch, as I was planning on doing the transfection today.  Does anyone have any idea how I might recover my pDNA from absolute DMSO?   I was thinking of placing it in the spin-vac, but I'm interested in other ideas from the forum.  Humbly,JAH

#2 genehunter

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Posted 19 June 2009 - 05:40 AM

I hope DNA did  not solubilize in DMSO. You can just spin once,  get rid of it and wash with EtOH again,  then disslove it in DW or TE.




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