Essential Role of Ubiquitin-Fold Modifier 1 Conjugation in DNA Damage Response

DNA and Cell Biology
Zhi Fang, Zezheng Pan

Abstract

Both endogenous and exogenous factors can cause DNA damage that compromises genomic integrity and cell viability. A proper DNA damage response (DDR) plays a role in maintaining genome stability and preventing tumorigenesis. DNA double-strand breaks (DSBs) are the most toxic DNA lesion, whose response is dominated by the ataxia-telangiectasia mutated (ATM) protein kinase. After being activated by the sensor Mre11-Rad50-Nbs1 (MRN) complex or acetyltransferase Tip60, ATM rapidly phosphorylates downstream targets to launch DDR signaling when DNA is damaged. However, the exact mechanism of DDR is complex and ambiguous. Ufmylation, one type of ubiquitin-like modification, proceeds mainly through a three-step enzymatic reaction to help ubiquitin-fold modifier 1 (Ufm1), attach to substrates with ubiquitin-like modifier-activating enzyme 5 (Uba5), Ufm1-conjugating enzyme 1 (Ufc1) and Ufm1-specific ligase 1 (Ufl1). Although ubiquitination is essential to the DSBs response, the potential function of ufmylation in DDR is largely unknown. Herein, we review the relationship between ufmylation and DDR to elucidate the function and mechanism of ufmylation in DDR, which would reveal the pathogenesis of some diseases and provide new guidance to ...Continue Reading

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Jan 10, 2020·FASEB Journal : Official Publication of the Federation of American Societies for Experimental Biology·Li YuRanhui Duan
Feb 14, 2021·Biomolecules·Katharina F Witting, Monique P C Mulder

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Methods Mentioned

BETA
ubiquitination
acetylation
pull-down
biopsies
acetylates
co-immunoprecipitation

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