RNA affinity isolation with TAP-Pum and controls

ABSTRACT: Biochemical purification: Five grams of adult flies or 2.5 g of embryos were used in each affinity purification. Flies or embryos were suspended in 15 ml of buffer B (buffer A plus 1.5 mM dithiothreitol [DTT], 1 mM phenylmethylsulfonylfluoride [PMSF], 0.5 5g/ml leupeptin, 0.8 5g/ml pepstatin, 20 U/ml DNase I, 100 U/ml RNasin [Promega], and 0.2 mg/ml heparin) in a mortar filled with liquid nitrogen and ground with a pestle to a fine powder. The powder was transferred to a glass-dounce, thawed and dounced until the pestle reached the bottom. The suspension was centrifuged twice at 40C and 10,000 g for 10 min. The fat layer on top was aspirated off after each centrifugation. Cleared extract (12.5 ml) was incubated with 600 5l of a slurry (50% [v/v]) of IgG-agarose beads (Sigma) for 90 min at

ORGANISM(S): Drosophila melanogaster

SUBMITTER: Andre Gerber 

PROVIDER: E-GEOD-3582 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress