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Dual modes of DNA N-methyladenine maintenance by distinct methyltransferase complexes.
Proc Natl Acad Sci U S A
January 2025
Key Laboratory of Evolution & Marine Biodiversity (Ministry of Education) and Institute of Evolution & Marine Biodiversity, Ocean University of China, Qingdao 266003, China.
Stable inheritance of DNA N-methyladenine (6mA) is crucial for its biological functions in eukaryotes. Here, we identify two distinct methyltransferase (MTase) complexes, both sharing the catalytic subunit AMT1, but featuring AMT6 and AMT7 as their unique components, respectively. While the two complexes are jointly responsible for 6mA maintenance methylation, they exhibit distinct enzymology, DNA/chromatin affinity, genomic distribution, and knockout phenotypes.
View Article and Find Full Text PDFComprehensive analysis of the xbp1 gene in Pacific abalone Haliotis discus hannai: Structure, expression, and role in heat stress response.
Int J Biol Macromol
January 2025
The Key Laboratory of Mariculture (Ministry of Education), Fisheries College, Ocean University of China, Qingdao 266003, China. Electronic address:
The present study explores the x-box binding protein 1 (xbp1) gene in Haliotis discus hannai (Pacific abalone), focusing on its structure, expression, and functional role under heat stress. Southern blot revealed two copies of xbp1 in the intestine and mantle, one in the gill and muscle, and no detection in the digestive gland. mRNA expression levels were highest in the gill, followed by the mantle, intestine, and muscle, with the digestive gland showing the lowest expression.
View Article and Find Full Text PDFBiorefinery of Lignocellulosic and Marine Resources for Obtaining Active PVA/Chitosan/Phenol Films for Application in Intelligent Food Packaging.
Polymers (Basel)
December 2024
National Nanotechnology Laboratory, National Center for High Technology, Pavas, San José 10109, Costa Rica.
This study focuses on the extraction of phenolic compounds from the fermentation of and . The main goal was to synthesize phenol/chitosan microspheres and PVA films and characterized using FTIR, TGA, DSC, SEM, and mechanical tests to evaluate their physical, chemical, and mechanical properties for antimicrobial packaging applications. Homogeneous chitosan microspheres loaded with lignin-derived phenols were obtained, showing controlled release of antimicrobial compounds.
View Article and Find Full Text PDFResponse surface methodology and repeated-batch fermentation strategies for enhancing lipid production from marine oleaginous Candida parapsilosis Y19 using orange peel waste.
Microb Cell Fact
January 2025
Botany and Microbiology Department , Faculty of Science, Al-Azhar University, Nasr City, Cairo, 11884, Egypt.
Oleaginous yeasts are considered promising sources for lipid production due to their ability to accumulate high levels of lipids under appropriate growth conditions. The current study aimed to isolate and identify oleaginous yeasts having superior ability to accumulate high quantities of lipids; and enhancing lipid production using response surface methodology and repeated-batch fermentation. Results revealed that, twenty marine oleaginous yeasts were isolated, and the most potent lipid producer isolate was Candida parapsilosis Y19 according to qualitative screening test using Nile-red dye.
View Article and Find Full Text PDFNgLst8 Coactivates TOR Signaling to Activate Photosynthetic Growth in .
Microorganisms
December 2024
State Key Laboratory of Marine Environmental Science, Xiamen University, Xiamen 361000, China.
The target of rapamycin (TOR) serves as a central regulator of cell growth, coordinating anabolic and catabolic processes in response to nutrient availability, growth factors, and energy supply. Activation of TOR has been shown to promote photosynthesis, growth, and development in yeast, animals, and plants. In this study, the complete cDNA sequence of the gene was obtained from .
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