LaCava Research Wiki

Initiated September 2017

T1 - Relative protein quantity per mg of powder

Maria10th January 2020 at 11:18am
  • PC-H-t
    • B1
    • B2
  • DC-H-t
    • B1
    • B2
    • B3 (spare batch – for antibody testing)
  • PC-L-ut
    • B1
    • B2

Weigh out 50mg of each pre-mixed powder, add 200ul of extraction buffer

Extraction buffer: 20mM HEPES, pH7.4, 1% Tritonx-100, 500mM NaCl (with protease inhibitors), 1:4 (w/v)

5x 2sec @ 2 Amp with the new sonicator

Spin @ 20k rcf, 4°C for 10’ (Eppendorf Centrifuge 5417R)

Transfer supernatant to fresh tubes.

Determine the relative protein concentration of each batch using Bradford.
If all the samples have a similar concentration for the similar amount of mg, then we can proceed to check the %H (heavy labeling percentage)