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Title: Structural and mechanistic basis of mammalian Nudt12 RNA deNADding

Journal Article · · Nature Chemical Biology

We recently demonstrated that mammalian cells harbor nicotinamide adenine dinucleotide (NAD)-capped messenger RNAs that are hydrolyzed by the DXO deNADding enzyme. Here, we report that the Nudix protein Nudt12 is a second mammalian deNADding enzyme structurally and mechanistically distinct from DXO and targeting different RNAs. Here, the crystal structure of mouse Nudt12 in complex with the deNADding product AMP and three Mg2+ ions at 1.6 Å resolution provides insights into the molecular basis of the deNADding activity in the NAD pyrophosphate. Disruption of the Nudt12 gene stabilizes transfected NAD-capped RNA in cells, and its endogenous NAD-capped mRNA targets are enriched in those encoding proteins involved in cellular energetics. Furthermore, exposure of cells to nutrient or environmental stress manifests changes in NAD-capped RNA levels that are selectively responsive to Nudt12 or DXO, respectively, indicating an association of deNADding to cellular metabolism.

Research Organization:
Argonne National Laboratory (ANL), Argonne, IL (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES). Scientific User Facilities Division; National Institutes of Health (NIH); NIH-ORIP HEI
Grant/Contract Number:
AC02-06CH11357; GM118093; S10OD012018; GM126488; P41 GM103403; S10 RR029205
OSTI ID:
1531008
Journal Information:
Nature Chemical Biology, Vol. 15, Issue 6; ISSN 1552-4450
Publisher:
Nature Publishing GroupCopyright Statement
Country of Publication:
United States
Language:
ENGLISH
Citation Metrics:
Cited by: 34 works
Citation information provided by
Web of Science

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Cited By (2)

Structural studies of the eIF4E–VPg complex reveal a direct competition for capped RNA: Implications for translation journal November 2019
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