anti-BRCA1 antibody specificity issuesBRCA1 western blot
Posted 13 July 2012 - 06:35 AM
I used three different antibodies for BRCA1 (Ab-1, Ab-4 and santacruz C-20). All of them gave a lot of non-specific binding and the blot looked almost like a ponceau staining. Among these three, Ab-4 seems to be less non-specific. I need to know does others also get lot of non-specific bands with any of these antibodies? I am having tough time determining the band corresponding to BRCA1. I used 2 different prestained markers, one starting from 250kDa and another from 170kDa. I get 3 - 5 bands inbetween 250 and 170kDa. I thinking of using blocking peptides. I even increased the washing steps with TBS-Tween. My control WB for other proteins seems to give clean bands.
Is it a known problem with the specificity of BRCA1 antibodies? or is it something that I am doing wrong?
I appreciate your suggestions.
Posted 13 July 2012 - 07:22 PM
Posted 16 July 2012 - 08:12 AM