Recipe

Polysomal Lysis Buffer with Puromycin

Tris-HCl (pH 7.5)        20 mm
KCl        500 mm
MgCl2         2 mm
Puromycin         1 mm
Dithiothreitol (DTT)         1 mm
cOmplete protease inhibitor cocktail tablets, EDTA-free (Roche) 2 tablets/100 mL culture
Heparin       0.2 mg/mL
RNasin (Promega)        1 µL/mL
Phenylmethylsulfonyl fluoride (PMSF)         1 mm
Combine the first three ingredients. Just before use, add the puromycin and DTT, as well as the protease inhibitor tablets, heparin, and RNasin (the latter three are optional but highly recommended). For processing meiotic cells, include PMSF.
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