A template tetra-coupled with thymidylic acid through a phosphate linkage was characterized in methanol for emergent properties of nucleobase tetrad formation. Intramolecular hydrogen bonded base pairing in the absence of a cation was indicated for the thymidylic acid species supporting a monomeric template-assembled structure. Thus, an initial report of a stabilized individual thymine tetrad assembly is presented here. Consistent with previous investigations, a deoxyguanylic acid variant templated an analogous methanolic monomeric G-tetrad in comparison to the thymine species.
Download full-text PDF |
Source |
---|---|
http://dx.doi.org/10.1021/jo401281p | DOI Listing |
Nat Struct Mol Biol
January 2025
Zhejiang Provincial Key Laboratory of Pancreatic Disease, Department of Gastroenterology, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China.
Thymidine kinase 1 (TK1), a crucial enzyme in DNA synthesis, is highly expressed in various cancers. However, the mechanisms underlying its elevated expression and the implications for tumor metabolism remain unclear. Here we demonstrate that activation of growth factor receptors enhances TK1 expression.
View Article and Find Full Text PDFJ Inflamm Res
December 2024
Department of Critical Care Medicine, Taizhou Hospital of Zhejiang Province Affiliated to Wenzhou Medical University, Taizhou, 317000, People's Republic of China.
Introduction: Sepsis-induced acute lung injury (ALI), a critical sequela of systemic inflammation, often progresses to acute respiratory distress syndrome, conferring high mortality. Although UMI-77 has demonstrated efficacy in mitigating lung injury in sepsis, the molecular mechanisms underlying its action have not yet been fully elucidated.
Methods: This study aimed to delineate the mechanism by which UMI-77 counteracts sepsis-induced ALI using comprehensive transcriptomic and metabolomic analyses.
Proc Natl Acad Sci U S A
December 2024
Department of Chemistry, Stanford University, Stanford, CA 94305.
The key first step in the oligomerization of monomers is to find an initiator, which is usually done by thermolysis or photolysis. We present a markedly different approach that initiates acid-catalyzed polymerization at the surface of water films or water droplets, which is the reactive phase during a wet-dry cycle in freshwater hot springs associated with subaerial volcanic landmasses. We apply this method to the oligomerization of different nucleic acids, a topic relevant to how it might be possible to go from simple nucleic acid monomers to long-chain polymers, a key step in forming the building blocks of life.
View Article and Find Full Text PDFJ Am Chem Soc
November 2024
Department of Molecular Chemistry and Materials Science, Weizmann Institute of Science, Rehovot 7610001, Israel.
The ability to obtain quantitative spatial information on subcellular processes of deep tissues has been a long-standing challenge for molecular magnetic resonance imaging (MRI) approaches. This challenge remains even more so for quantifying readouts of genetically engineered MRI reporters. Here, we set to overcome this challenge with a molecular system designed to obtain quantitative H-MRI maps of a gene reporter.
View Article and Find Full Text PDFJ Enzyme Inhib Med Chem
December 2024
Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Alexandria University, Alexandria, Egypt.
New Biginelli adducts were rationalised, the introduction of selected anti-tubercular (TB) pharmacophores into the dihydropyrimidine (DHPM) ring of deoxythymidine monophosphate (dTMP), the natural substrate of thymidine monophosphate kinase (TMPK). Repurposing was one of the design rationale strategies for some selected mimics of the designed compounds. The anti-TB activity was screened against the M HRv strain where was superior to ethambutol (EMB), and was 9-fold more potent than pyrazinamide (PZA).
View Article and Find Full Text PDFEnter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!