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Loss of the cytochrome b6f subunit PetN destabilizes the complex and severely impairs state transitions in Anabaena variabilis.
Plant Physiol
March 2025
School of Life Sciences, Peking University, Beijing 100871, China.
The cytochrome b6f complex (Cyt b6f) plays pivotal roles in both linear and cyclic electron transport of oxygenic photosynthesis in plants and cyanobacteria. The four large subunits of Cyt b6f are responsible for organizing the electron transfer chain within Cyt b6f and have their counterparts in the cytochrome bc1 complex in other bacteria. The four small subunits of Cyt b6f are unique to oxygenic photosynthesis, and their functions remain to be elucidated.
View Article and Find Full Text PDFDirect observation of carbon dioxide adsorption and binding at the air/aqueous interface.
PNAS Nexus
March 2025
Chemical Sciences and Engineering Division, Argonne National Laboratory, Lemont, IL 60439, USA.
Carbon dioxide removal (CDR) involves reducing carbon dioxide (CO₂) concentrations. Developing new technologies and enhancing existing ones for extracting and converting CO₂ are ongoing areas of research. In all these technologies, the movement of CO molecules through an interface is a common process.
View Article and Find Full Text PDFBoosting the Pixel Acquisition Rate of Elemental Mapping with Laser Ablation-ICP-Mass Spectrometry to 1000 Hz.
Anal Chem
March 2025
Department of Chemistry, Atomic and Mass Spectrometry - A&MS Research Group, Ghent University, Campus Sterre, Krijgslaan 281-S12, Ghent 9000, Belgium.
Novel low-dispersion ablation cell designs and highly efficient aerosol transport systems have enabled fast elemental mapping using laser ablation-ICP-mass spectrometry (LA-ICP-MS) at high spatial resolution and its application in various research fields. Nowadays, the fastest low-dispersion setups enable narrow single pulse responses (SPR, duration of the transient signal observed upon a single laser shot), which enhance the signal-to-noise ratio and boost the pixel acquisition rate attainable in elemental mapping applications. In this work, the analytical performance of a nanosecond 193 nm ArF* excimer-based kHz laser in combination with a low-dispersion tube-type ablation cell, coupled to an ICP-mass spectrometer equipped with a time-of-flight (ToF) analyzer, was evaluated.
View Article and Find Full Text PDFPerceived neighborhood built environment and physical activity in urban population in Chile.
BMC Public Health
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Escuela de Ciencias de la Actividad Física, el Deporte y la Salud, Universidad de Santiago de Chile, Santiago, Chile.
Background: Various indicators of neighborhood environmental perceptions are differently associated with physical activity (PA) domains, with notable variations by sex. However, few studies in Latin America have examined these associations across distinct PA domains. In this study, we analyzed the relationship between neighborhood environmental perceptions and PA in the domains of transportation and leisure among Chilean adults.
View Article and Find Full Text PDFBrain Perfusion, Atrophy, and Dopaminergic Changes in Amyloid Negative Logopenic Primary Progressive Aphasia.
Sci Rep
March 2025
Department of Neurology, Yonsei University College of Medicine, 50-1 Yonsei-ro, Seodaemun-gu, Seoul, 03722, Republic of Korea.
Although most cases of logopenic variant primary progressive aphasia (lvPPA) are caused by Alzheimer's disease (AD), Lewy body disease (LBD) has also been reported. We assessed brain perfusion, atrophy, dopamine transporter (DAT) uptake, and language function among patients with lvPPA based on beta-amyloid. Thirty-three patients with lvPPA and 28 healthy controls (HCs) underwent MRI, F-florbetaben PET, and early- and late-phase DAT PET.
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