Introduction to Western Blotting
Western Blot Learning Center
Instruction for all steps in the western blotting workflow.
Western blotting is a powerful technique that allows you to positively detect your proteins, estimate quantities, and determine their molecular weights. All from a starting mixture of proteins extracted from cells or tissues.
The entire western blotting workflow consists of several individual steps, each of which is critical to producing high-quality data.
This Learning Center provides in-depth information on the theory and practice of each step of the western blotting process, starting from sample preparation to analysis of the final blot
Cells containing your protein of interest must be lysed completely to ensure a high yield while removing non-protein components of cells. Good sample preparation techniques ensure proteins remain undamaged for downstream analysis.
Electrophoresis separates the proteins in the sample and provides molecular weight data for detected proteins during subsequent detection.
Separated proteins are transferred from the gel to a membrane where they are immobilized. Efficient protein transfer is required for maximum western blot sensitivity.
A good, clean western relies on the specificity and sensitivity of your antibodies. In addition to detection of specific proteins, the total protein in a sample can also be visualized with total protein stains or newer technologies that eliminate the need for staining and destaining.
Accurate imaging of your western blot is crucial for capturing blot data for downstream analysis. Understanding basic imaging concepts such as sensitivity, resolution, and sources of background noise can help you maximize image data quality.
An image of a western blot is rich with information. Some experiments require only a qualitative answer, but properly designed and executed western blot experiments can also provide quantitative data on relative protein expression between samples.
More Western Blotting
Western Blotting University
Courses designed to make you a western blotting expert.
Monday – Friday, April 19 — April 23, 2021 at 9:00AM PDT (5:00PM BST)
Join us for an in-depth experience learning about western blotting principles and techniques. This five-part webinar series is for anyone who has ever asked how to perform a western blot and would like to have a detailed understanding of western blotting principles at each step of the workflow.
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