PROTOCOL: Western Blot (Odyssey)

  • Use precast gels from BioRad (10 wells, 4-15 %)
  • Warm the samples at 96ºC for 5 minutes
  • Load samples in the wells (30 ul per well)
  • Run with commercial running buffer 1x at 20 – 40mA
  • Transfer to a nitrocelullose (or PVDF) membrane with Transblot Turbo (using the commercial buffer) –> high proteins or mixed proteins protocol
  • Blotting: wash the membrane with water and cut it
    • Blocking: blocking buffer Casein – TBS 1:1 1h
    • Primary antibodies (diluted in Casein-TBS 1:1) –> 1h at RT or overnight at 4ºC
    • Wash with TBS-tween0’1% (3×5′)
    • Secondary antibody 1/7500 (diluted in Casein-TBS tween0’1%): 1h at RT
    • Wash with TBS-tween0’1% 1x (2×5′)
    • Wash with TBS 1x (1×5′)
    • Read with Odyssey equipment

Handmade gels:

8 % separating gel 4 % stacking gel
Tris pH 8.8 3M: 1.25ml
Acrylamide 40%: 2 ml
H2O: 6.65ml
SDS 20%: 50ul
PSA 10%: 100ul
Temed: 10ul
Tris pH 6.8 2M: 0.75ml
Acrylamide 40%: 1 ml
H2O: 8.25 ml
SDS 20%: 50ul
PSA 10%: 100ul
Temed: 10ul
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