Catalog number: SBB-US0012, 20 μgThis product consists of His6-p53 protein expressed in E.coli and ubiquitinated by MDM2, and subsequently purified from conjugation-reaction proteins/ enriched post-conjugation. Western blot analysis shows multiple states of poly-ubiquitination, and digestion with USP7 shows ubiquitinated p53 can be deconjugated. [1][2]