User:Wilfred J. Poppinga/Notebook/cAMP compartmentalization/2010/06/21

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Bradford assay

  • Dilute samples 5x (4 μL samples + 16 μL H2O)
  • Put (3x) 5 μL sample on 96-wells plate
  • Put STND on plate
  • Add 250 μL Bradford reagent
  • Measure (AG KLUSSMANN FRANK BRADFORD ASSAY) (within 20 min.)
    • NOTE: After dilution everything was performed by Tina, Anita's "Ausbildung" student

cAMP precipitation

  • All samples were diluted using MillQ water to an end concentration of 500 μg/mL
    • Dilution was prepared in a volume of 3 mL
  • Each sample (1 mL) was put to 30 μL of 8-AHA-cAMP agarose beads in triplicate
  • Samples were incubated with beads ON @ 4 °C


  • Samples seem to have a slight precipitate, probably due to the sonication


  • See attachment for Bradford results


  • RIPA control for Bradford showed a high value, but seeing as this was only used in the new HEK293 preparation (and this concentration is also higher than the others) it was not taken in account for correction. Only the old HEK293 lysate was used for cAMP precipitation.


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