Isolation of the Hepatic Ubiquitome/NEDDylome by Streptavidin Pull-Down Assay in the Biotinylated Ubiquitin (bioUb)/Biotinylated NEDD8 (bioNEDD8) Transgenic Mice.

Methods in molecular biology (Clifton, N.J.)(2023)

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摘要
In the last years, our group and others have uncovered the role of ubiquitin (Ub) and ubiquitin-like proteins such as the neural precursor cell expressed, developmentally downregulated 8 (NEDD8)-mediated modifications in several types of liver disease, including nonalcoholic fatty liver disease, liver fibrosis, and hepatocellular carcinoma. For this purpose, we have taken advantage of biotinylated ubiquitin (bioUb) and biotinylated NEDD8 (bioNEDD8) mice, transgenic mouse models in which ubiquitin and NEDD8, respectively, are biotinylated in vivo. Using these genetic tools and pull-down assays that exploit the strong biotin-streptavidin interaction, denaturing lysis conditions, and stringent washing procedures, only proteins modified by Ub or NEDD8 are isolated from mammalian tissues in vivo. Here, we report a protocol of streptavidin pull-down of ubiquitinated and NEDDylated liver proteins using the bioUb and bioNEDD8 mice that can potentially be used to characterize both the hepatic ubiquitome and NEDDylome in different models of liver injury.
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关键词
Biotinylated NEDD8,Biotinylated ubiquitin,Liver,Mammalian tissue,NEDD8,Ubiquitin
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