We recommend using a maximum of 10-20ug of IP antibody per lane/well to avoid overloading.
Figure 1: A&B. Heavy (50 kDa) and light (25 kDa) chains of reduced and SDS-denatured Mouse IgG were separated by SDS-PAGE and detected on Western blots using Peroxidase-Goat anti-Mouse IgG (H+L) (A) and Peroxidase-Goat anti-Mouse IgG, Light Chain specific (B). Both heavy and light chain bands were detected with anti-IgG (H+L) (A). However, no heavy chain band was detected when anti-IgG, Light Chain specific antibodies were used (B) even on lanes heavily overloaded with IgG.
If you are still experiencing problems with the Western blot our technical team would be delighted to help you problem solve you can email them at technocal@stratech.co.uk
References:
Alberts B et al (1994) Molecular biology of the Cell. 3rd Ed. Garland press. London
Kalyuzhny A (2016) Immunohistochemistry – Essential Elements and Beyond. Springer International Publishing Switzerland.
Mann, M. & Jensen, O.N. Proteomic analysis of post-translational modifications. Nat. Biotechnol. 21, 255-261