Question (23560) | Anti-Rb (phospho T821) antibody (ab4787)

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Question

Hi there, I was wondering if you could let me know if you have any pure positive controls or blocking peptides for either of these two antibodies: Anti-Phospho Rb (T821) #ab4787 Anti-Rb (ab6075) For both there are suggested cell lysates to use as positive controls, but I need a pure protein to verify the exact band on my western blots. I know you provide a His-tagged version of the Rb full length protein, but do you have any non-tagged versions? Or do you know a good vendor for these? Also, the blocking peptide for phospho-Rb is no longer available (#ab5324); is there another source I could use to get this blocking peptide?

Answer

Thank you for contacting us. We currently only have the tagged Rb proteins in our catalog and no blocking peptide for ab4787 is available. I would sugges Biocompare.com to search for these products. I hope this information is helpful to you. Please do not hesitate to contact us if you need any more advice or information.

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