USP28 Rabbit polyclonal Antibody IgG
Fig1: Western blot analysis of USP28 on different cell lysates using anti-USP28 antibody at 1/500 dilution.
Lane 1: K562
Lane 2: A549
Lane 3: Daudi
Fig2: Flow cytometric analysis of MG-63 cells with USP28 antibody at 1/50 dilution (red) compared with an unlabelled control (cells without incubation with primary antibody; blue). Alexa Fluor 488-conjugated goat anti-rabbit IgG was used as the secondary antibody.
Host Species; Species ReactivityRabbit; Human
ImmunogenRecombinant protein within human USP28 aa 550-700.
Purification; FormulationProtein affinity purified. ; 1*TBS (pH7.4), 0.5%BSA, 50%Glycerol. Preservative: 0.05% Sodium Azide.; Liquid form.
ALTnamesUbiquitin carboxyl-terminal hydrolase 28, Deubiquitinating enzyme 28, Ubiquitin thioesterase 28, Ubiquitin-specific-processing protease 28
BackgroundDeubiquitinase involved in DNA damage response checkpoint and MYC proto-oncogene stability. Involved in DNA damage induced apoptosis by specifically deubiquitinating proteins of the DNA damage pathway such as CLSPN. Also involved in G2 DNA damage checkpoint, by deubiquitinating CLSPN, and preventing its degradation by the anaphase promoting complex/cyclosome (APC/C). In contrast, it does not deubiquitinate PLK1. Specifically deubiquitinates MYC in the nucleoplasm, leading to prevent MYC degradation by the proteasome: acts by specifically interacting with isoform 1 of FBXW7 (FBW7alpha) in the nucleoplasm and counteracting ubiquitination of MYC by the SCF(FBW7) complex. In contrast, it does not interact with isoform 4 of FBXW7 (FBW7gamma) in the nucleolus, allowing MYC degradation and explaining the selective MYC degradation in the nucleolus. Deubiquitinates ZNF304, hence preventing ZNF304 degradation by the proteasome and leading to the activated KRAS-mediated promoter hypermethylation and transcriptional silencing of tumor suppressor genes (TSGs) in a subset of colorectal cancers (CRC) cells.(ER1803-52)