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Substrate transport and drug interaction of human thiamine transporters SLC19A2/A3.
Nat Commun
December 2024
ENT Institute and Otorhinolaryngology Department of Eye & ENT Hospital, Institutes of Biomedical Sciences, Shanghai Key Laboratory of Medical Epigenetics, International Co-laboratory of Medical Epigenetics and Metabolism (Ministry of Science and Technology), Department of Systems Biology for Medicine, Fudan University, Shanghai, China.
Thiamine and pyridoxine are essential B vitamins that serve as enzymatic cofactors in energy metabolism, protein and nucleic acid biosynthesis, and neurotransmitter production. In humans, thiamine transporters SLC19A2 and SLC19A3 primarily regulate cellular uptake of both vitamins. Genetic mutations in these transporters, which cause thiamine and pyridoxine deficiency, have been implicated in severe neurometabolic diseases.
View Article and Find Full Text PDFFunctional anatomy of zinc finger antiviral protein complexes.
Nat Commun
December 2024
Laboratory of Retrovirology, The Rockefeller University, New York, NY, 10065, USA.
ZAP is an antiviral protein that binds to and depletes viral RNA, which is often distinguished from vertebrate host RNA by its elevated CpG content. Two ZAP cofactors, TRIM25 and KHNYN, have activities that are poorly understood. Here, we show that functional interactions between ZAP, TRIM25 and KHNYN involve multiple domains of each protein, and that the ability of TRIM25 to multimerize via its RING domain augments ZAP activity and specificity.
View Article and Find Full Text PDFAn adenosine analog shows high antiviral potency against coronavirus and arenavirus mainly through an unusual base pairing mode.
Nat Commun
December 2024
Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, Anhui, China.
By targeting the essential viral RNA-dependent RNA polymerase (RdRP), nucleoside analogs (NAs) have exhibited great potential in antiviral therapy for RNA virus-related diseases. However, most ribose-modified NAs do not present broad-spectrum features, likely due to differences in ribose-RdRP interactions across virus families. Here, we show that HNC-1664, an adenosine analog with modifications both in ribose and base, has broad-spectrum antiviral activity against positive-strand coronaviruses and negative-strand arenaviruses.
View Article and Find Full Text PDFSARS-CoV-2 NSP3/4 control formation of replication organelle and recruitment of RNA polymerase NSP12.
J Cell Biol
March 2025
Guangzhou National Laboratory , Guangzhou, China.
β-coronavirus rearranges the host cellular membranes to form double-membrane vesicles (DMVs) via NSP3/4, which anchor replication-transcription complexes (RTCs), thereby constituting the replication organelles (ROs). However, the impact of specific domains within NSP3/4 on DMV formation and RO assembly remains largely unknown. By using cryogenic-correlated light and electron microscopy (cryo-CLEM), we discovered that the N-terminal and C-terminal domains (NTD and CTD) of SARS-CoV-2 NSP3 are essential for DMV formation.
View Article and Find Full Text PDFtargeting of AmpC beta-lactamases in : unveiling Piperenol B as a potent antimicrobial lead.
J Biomol Struct Dyn
December 2024
Department of Biotechnology, School of Bioengineering, College of Engineering and Technology, SRM Institute of Science and Technology, Kattankulathur, Chengalpattu, Tamilnadu, India.
Antimicrobial Resistance poses a major threat to human health worldwide. Microorganisms develop multi-drug resistance due to intrinsic factors, evolutionary chromosomal alterations, and horizontal gene transfer. , a common nosocomial bacterium, can cause various infections and is classified as multidrug-resistant.
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