Western Blotting (Fly Heads)
Mel Feany
Abstract
This protocol describes how to perform a Western Blotting technique using fly heads.
Steps
Homogenize desired number of fly heads in 1 X Laemmli sample buffer.
Heat samples to 100°C
for 0h 10m 0s
, spin briefly before loading.
Load premade gel into western blotting apparatus. Fill reservoir with Running Buffer:
Running Buffer:
6g
Tris-HCL
28.9g
glycine
Fill to 1L
with distilled water
Add 5mL
20% SDS
Load samples on gel and attach electrodes.
Run gel at 120 V until dye front reaches the bottom of the gel, 1h 0m 0s
. Run longer for greater separation.
Remove gel and transfer using Trans-Blot Turbo.
Perform antigen retrieval by microwaving 0h 9m 0s
in PBS.
Block membrane in 1X PBS with 0.05% Tween-20 and 3% dry milk for 1h 0m 0s
.
Add primary antibody at correct dilution in PBSTween + milk and incubate with shaking at 4°C
.
Wash blot 3x in PBSTween, 0h 5m 0s
each, with shaking.
Add secondary antibody at the correct dilution in PBSTween + milk, incubate with shaking at Room temperature
for 3h 0m 0s
.
Wash blot in PBSTween 0h 30m 0s
with frequent wash changes.
Develop with ECL substrate or image fluorescence, as appropriate.