Purification of GST-HA-S6K: Difference between revisions

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updated lipofectamine conditions
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==Protocol==
==Protocol==
===Transfection of Cells===
===Transfection of Cells===
#Split cells into 10 new dishes in DMEM/FBS with '''no antibiotics'''.
#Split 293A cells into 10-150 mm dishes in DMEM/FBS with '''no antibiotics'''.
#Transefect with 90-95% confluent
#Transfect when cells are 90-95% confluent.
#Combine 240 ug DNA with 1.5 mL OptiMEM, and 600 uL Lipofectamine 2000 with 1.5 mL OptiMEM
#Transfer cells to serum **and P/S/G free** media
#Combine 500 ug DNA with 10 mL OptiMEM, and separately 700 uL Lipofectamine 2000 with 10 mL OptiMEM
#After 5 minutes, combine the DNA solution with the Lipofectamine solution.
#After 5 minutes, combine the DNA solution with the Lipofectamine solution.
#Wait 20 min, then add 3 mL to each plate of cells
#Wait 20 min, then add ~2 mL to each plate of cells.
#After ~4h refeed with normal media (containing antibiotics)
#After ~4h refeed with normal media (can now contain antibiotics) and incubate overnight.


===Purification of GST-S6K1===
===Purification of GST-S6K1===
#Treat cells for 30min with 100 nM Wortmannin to suppress endogenous S6K phosphorylation
#Wash cells with D-PBS -/- twice (10 mL per plate)
#Wash cells with D-PBS -/- twice (10 mL per plate)
#Add 0.5 mL [[HNTG Buffer]] per plate and scrape
#Add 0.5 mL [[HNTG Buffer]] per plate and scrape