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http://dx.doi.org/10.1103/PhysRevLett.75.2916 | DOI Listing |
Sci China Life Sci
January 2025
The Key Laboratory of Medical Molecular Cell Biology of Shanxi Province, Institutes of Biomedical Sciences, Shanxi University, Taiyuan, 030006, China.
The cGAS-STING pathway plays a crucial role in the innate immune system by detecting mislocalized double-stranded DNA (dsDNA) in the cytoplasm and triggering downstream signal transduction. Understanding the mechanisms by which cGAS and STING operate is vital for gaining insights into the biology of this pathway. This review provides a detailed examination of the structural features of cGAS and STING proteins, with a particular emphasis on their activation and inhibition mechanisms.
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January 2025
Nonprofitable Organization Touche NPO, Sapporo, 060-004, Japan.
In this study, we explore the structural intricacies of cellulose, a polymer composed of glucose monomers arranged in a linear chain, primarily investigated through solid-state NMR techniques. Specifically, we employ low-field proton nuclear magnetic resonance (H-NMR) to delve into the diverse hydrogen atom types within the cellulose molecule. The low-field H-NMR technique allows us to discern these hydrogen atoms based on their distinct chemical shifts, providing valuable insights into the various functional groups present in cellulose.
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January 2025
Department of Biomedical and Biotechnological Sciences, University of Catania, 95123, Catania, Italy.
Recent investigations into radiation-induced side effects have focused on understanding the physiopathological consequences of irradiation on late-responding tissues like the spinal cord, which can lead to chronic progressive myelopathy. Proton therapy, an advanced radiation treatment, aims to minimize damage to healthy tissues through precise dose deposition. However, challenges remain, particularly regarding the variation in dose distribution, characterized by maximum deposition at the end of the proton range, known as the distal fall-off of a spread-out Bragg peak.
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January 2025
National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei, PR China.
Transition-metal layered double hydroxides are widely utilized as electrocatalysts for the oxygen evolution reaction (OER), undergoing dynamic transformation into active oxyhydroxides during electrochemical operation. Nonetheless, our understanding of the non-equilibrium structural changes that occur during this process remains limited. In this study, utilizing in situ energy-dispersive X-ray absorption spectroscopy and machine learning analysis, we reveal the occurrence of deprotonation and elucidate the role of incorporated iron in facilitating the transition from nickel-iron layered double hydroxide (NiFe LDH) into its active oxyhydroxide.
View Article and Find Full Text PDFJ Child Neurol
January 2025
Department of Pediatrics, Division of Child Neurology, Ankara Etlik City Hospital, Ankara, Turkey.
Mitochondrial complex I transfers electrons from NADH (nicotinamide adenine dinucleotide) to ubiquinone, facilitating ATP synthesis via a proton gradient. Complex I defects are common among the mitochondrial diseases, especially in childhood. , located in complex I's transmembrane domain, is not directly involved in catalytic activity, but the mutations are associated with Leigh syndrome and complex I defects.
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