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• W4288045773 endingPage "103381" @default.
• W4288045773 startingPage "103381" @default.
• W4288045773 abstract "Murine FAM72A, mFAM72A, binds the nuclear form of uracil-DNA glycosylase, mUNG2, inhibits its activity and causes its degradation. In immunoprecipitation assays the human paralog, hFAM72A, binds hUNG2 and is a potential anti-cancer drug target because of its high expression in many cancers. Using purified mFAM72A, and mUNG2 proteins we show that mFAM72A binds mUNG2, and the N-terminal 25 amino acids of mUNG2 bind mFAM72A at a nanomolar dissociation constant. We also show that mFAM72A is present throughout the cells, and mUNG2 helps localize it to nuclei. Based on in silico models of mFAM72A-mUNG2 interactions, we constructed several mutants of mFAM72A and found that while they have reduced ability to deplete mUNG2, the mutations also destabilized the former protein. We confirmed that Withaferin A, a predicted lead molecule for the design of FAM72A inhibitors, binds mFAM72A with micromolar affinity but has little affinity to mUNG2. We identified two potential metal-binding sites in mFAM72A and show that one of the sites contains an Fe-S cluster. This redox-sensitive cluster is involved in the mFAM72A-mUNG2 interaction and modulates mFAM72A activity. Hydrogen peroxide treatment of cells increases mUNG2 depletion in a FAM72A-dependent fashion suggesting that mFAM72A activity is redox-sensitive." @default.
• W4288045773 created "2022-07-27" @default.
• W4288045773 creator A5008557067 @default.
• W4288045773 creator A5075917155 @default.
• W4288045773 date "2022-10-01" @default.
• W4288045773 modified "2023-10-14" @default.
• W4288045773 title "A redox-sensitive iron-sulfur cluster in murine FAM72A controls its ability to degrade the nuclear form of uracil-DNA glycosylase" @default.
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• W4288045773 doi "https://doi.org/10.1016/j.dnarep.2022.103381" @default.
• W4288045773 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/35908367" @default.
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