ArticleProceedings of the National Academy of Sciences of the United States of America2014
Structural basis of cellular dNTP regulation by SAMHD1.
Article in Proceedings of the National Academy of Sciences of the United States of America, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 86 papers.
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Who cites it
86 citing papers in PubMed, 143 citations in OpenAlex.
- Transition Metal Activation Reframes SAMHD1 Regulation.ACS chemical biology · 2026Article
- Nucleotide Metabolism in Health and Disease.MedComm · 2026Review
- Transition metal activation reframes SAMHD1 regulation.bioRxiv : the preprint server for biology · 2026Article
- Article
- Allosteric targeting with antiviral nucleotide analogs allows fine-tuning of SAMHD1 dNTPase activity.The Journal of biological chemistry · 2026Article
- SAMHD1 depletion restricts SARS-CoV-2 infection by suppressing HNF1-dependent ACE2 expression in lung epithelial cells.PLoS pathogens · 2026Article
- Continuous assay for the dNTP triphosphohydrolase of activated SAMHD1.Analytical biochemistry · 2026Article
- Hepatocyte SAMHD1 Deficiency Attenuates Hepatic Steatosis via Suppression of SREBP Activation in a Mouse Model of Metabolic-Associated Steatotic Liver Disease.International journal of biological sciences · 2026Article
- Blockade ofmBio · 2025Article
- dNTP depletion and beyond: the multifaceted nature of SAMHD1-mediated viral restriction.Journal of virology · 2025Review
- Transition State Analysis of SAMHD1 from PrimaryJournal of the American Chemical Society · 2025Article
- SAMHD1 shapes deoxynucleotide triphosphate homeostasis by interconnecting the depletion and biosynthesis of different dNTPs.Nature communications · 2025Article
- Functional conservation and divergence of arabidopsis VENOSA4 and human SAMHD1 in DNA repair.Heliyon · 2025Article
- Insight into the genetics of a novel white-striped leaf in rice.Frontiers in plant science · 2025Article
- Platform-directed allostery and quaternary structure dynamics of SAMHD1 catalysis.Nature communications · 2024Article
- Identification and evaluation of small-molecule inhibitors against the dNTPase SAMHD1 via a comprehensive screening funnel.iScience · 2024Article
- Deoxyguanosine-Linked Bifunctional Inhibitor of SAMHD1 dNTPase Activity and Nucleic Acid Binding.ACS chemical biology · 2023Article
- Protein oxidation increases SAMHD1 binding ssDNA via its regulatory site.Nucleic acids research · 2023Article
- SAMHD1 deacetylation by SIRT1 promotes DNA end resection by facilitating DNA binding at double-strand breaks.Nature communications · 2022Article
- Targeting the DNA damage response and repair in cancer through nucleotide metabolism.Molecular oncology · 2022Review
26 more citing papers are in PubMed but not listed here.
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
5 authors at 1 institution in 1 country.
Funding
Abstract
The sterile alpha motif and HD domain-containing protein 1 (SAMHD1), a dNTPase, prevents the infection of nondividing cells by retroviruses, including HIV, by depleting the cellular dNTP pool available for viral reverse transcription. SAMHD1 is a major regulator of cellular dNTP levels in mammalian cells. Mutations in SAMHD1 are associated with chronic lymphocytic leukemia (CLL) and the autoimmune condition Aicardi Goutières syndrome (AGS). The dNTPase activity of SAMHD1 can be regulated by dGTP, with which SAMHD1 assembles into catalytically active tetramers. Here we present extensive biochemical and structural data that reveal an exquisite activation mechanism of SAMHD1 via combined action of both GTP and dNTPs. We obtained 26 crystal structures of SAMHD1 in complex with different combinations of GTP and dNTP mixtures, which depict the full spectrum of GTP/dNTP binding at the eight allosteric and four catalytic sites of the SAMHD1 tetramer. Our data demonstrate how SAMHD1 is activated by binding of GTP or dGTP at allosteric site 1 and a dNTP of any type at allosteric site 2. Our enzymatic assays further reveal a robust regulatory mechanism of SAMHD1 activity, which bares resemblance to that of the ribonuclease reductase responsible for cellular dNTP production. These results establish a complete framework for a mechanistic understanding of the important functions of SAMHD1 in the regulation of cellular dNTP levels, as well as in HIV restriction and the pathogenesis of CLL and AGS.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.