I have a big problem : I am trying to precipitate proteins from nuclear and cytoplasmic fractions using acetone.
I have unfortunately a problem since I have got a loss of 80 % of my proteins after precipitation. Moreover, the pellet of protein is grey whereas it should be white... Do you know what could be the problem ?
I use a buffer with HEPES 10 mM, MgCl2 1.5 mM, KCl 10 mM, DTT, protease and phosphatase inhibitors and 0.05 % NP40... I don't know what to do...
Thanks a lot for your advices.
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Problem with protein precipitation
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