Western Blotting (Fly Heads)

Mel Feany

Published: 2022-10-25 DOI: 10.17504/protocols.io.8epv5j96jl1b/v2

Abstract

This protocol describes how to perform a Western Blotting technique using fly heads.

Steps

1.

Homogenize desired number of fly heads in 1 X Laemmli sample buffer.

2.

Heat samples to 100°C for 0h 10m 0s , spin briefly before loading.

3.

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

4.

Load samples on gel and attach electrodes.

5.

Run gel at 120 V until dye front reaches the bottom of the gel, 1h 0m 0s. Run longer for greater separation.

6.

Remove gel and transfer using Trans-Blot Turbo.

7.

Perform antigen retrieval by microwaving 0h 9m 0s in PBS.

8.

Block membrane in 1X PBS with 0.05% Tween-20 and 3% dry milk for 1h 0m 0s.

9.

Add primary antibody at correct dilution in PBSTween + milk and incubate with shaking at 4°C.

10.

Wash blot 3x in PBSTween, 0h 5m 0s each, with shaking.

11.

Add secondary antibody at the correct dilution in PBSTween + milk, incubate with shaking at Room temperature for 3h 0m 0s.

12.

Wash blot in PBSTween 0h 30m 0s with frequent wash changes.

13.

Develop with ECL substrate or image fluorescence, as appropriate.

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