Detect your Western Blots with Confidence! Use NEW! WesternSure® Chemiluminescent Reagents from LI-COR!
Now, in addition the great imaging systems for chemiluminescent Western blots, LI-COR Biosciences offers chemiluminescent Western blotting substrates and HRP-conjugated secondary antibodies for use in performing your BEST chemiluminescent Western blots ever. And, the WesternSure Pen is used to annotate visible protein ladders prior to chemiluminescent Western blot detection.
WesternSure chemiluminescent Western blotting reagents offer the best performance available when compared to other competitive products on the market. WesternSure PREMIUM Chemiluminescent Substrate is a highly sensitive enhanced substrate for detecting horseradish peroxidase (HRP) on immunoblots.
WesternSure HRP-conjugated secondary antibodies (Goat anti-Mouse and Goat anti-Rabbit) are compatible with a variety of chemiluminescent substrates and are optimized for use with WesternSure PREMIUM chemiluminescent substrates.
So, you’ve selected your primary antibodies with care (see Know Thy Primary Antibody), and you’re using a great HRP-conjugated secondary antibodies. NOW – what about the chemiluminescent substrate?
Yes, I know, there are tons of different substrates and vendors out there – all claiming to be the best, right? So, how do you choose the right one for your chemiluminescence Western blot?
One thing to keep in mind is that in this wide variety of chemiluminescent substrates for HRP detection, there are some that are better suited for digital Western imaging than others. In general, choose a substrate with a faster rate of reaction for use with the Odyssey Fc Dual-Mode Chemiluminescent and IR Fluorescent Imaging System or other digital chemiluminescent imaging systems.
Some substrates that are designed for optimal performance on film may not be suitable for detection on a CCD-based imaging system. Try different substrates to find the one that gives the most desirable image. As you can see from the images below, the substrate you pick DOES make a difference! So choose carefully!
In the three images below, two-fold serial dilutions of HRP-conjugated secondary antibody (1 ng-1.25 fg) were spotted onto nitrocellulose using a slot blot apparatus. Blots were detected with various chemiluminescent substrates.
Here are 2 documents with more troubleshooting information:
Updated February 18, 2015.