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Screening a library of temperature-sensitive mutants to identify secretion factors in .
J Bacteriol
January 2025
Department of Microbiology, Howard Taylor Ricketts Laboratory, The University of Chicago, Chicago, Illinois, USA.
Protein secretion is an essential cell process in bacteria, required for cell envelope biogenesis, export of virulence factors, and acquisition of nutrients, among other important functions. In the Sec secretion pathway, signal peptide-bearing precursors are recognized by the SecA ATPase and pushed across the membrane through a translocon channel made of the proteins SecY, SecE, and SecG. The Sec pathway has been extensively studied in the model organism , but the Sec pathways of other bacteria such as the human pathogen differ in important ways from this model.
View Article and Find Full Text PDFSaprolegniasis is one of the most dangerous fungal diseases of fish, causing significant mortality in fish hatcheries and young ones. The present study aimed to isolate and characterize the causative fungus from fingerlings of Pangasianodon hypophthalmus cultured intensively in freshwater cages in Indian reservoirs and to determine minimum inhibitory concentrations of different antifungal compounds against the fungal hyphae and zoospores. The fungal isolates grown on potato dextrose agar showed an abundance of gemmae, elongated mycelia, non-septate hyphae, primary zoospores, mature zoosporangia with numerous zoospores, cysts with bundles of long hairs and were further identified as Saprolegnia parasitica following PCR amplification and sequencing of internal transcribed spacer region.
View Article and Find Full Text PDFAcGLK1 promotes chloroplast division through regulating AcFtsZ1 in Actinidia chinensis.
Planta
December 2024
Anhui Province Key Laboratory of Horticultural Crop Quality Biology, School of Horticulture, Anhui Agricultural University, Hefei, 230036, China.
This study unravels a new regulatory member (AcGLK1) that regulates chloroplast division by affecting the expression levels of cytoskeletal filamenting temperature-sensitive Z (FtsZ) in Actinidia chinensis. GOLDEN 2-LIKE (GLK) transcription factor members of GARP subfamily play an irreplaceable role in regulating chloroplast biogenesis and development. Here we report the functional characterization of a novel GLK1 homolog (AcGLK1) isolated from kiwifruit (Actinidia chinensis cultivar 'Hongyang').
View Article and Find Full Text PDFTHB1, a putative transmembrane protein that causes hybrid breakdown in rice.
Breed Sci
June 2024
Department of Agro-Environmental Science, Obihiro University of Agriculture and Veterinary Medicine, Nishi 2-11 Inada, Obihiro, Hokkaido 080-8555, Japan.
Hybrid breakdown is a post-zygotic reproductive isolation that hinders genetic exchange between species or populations in both animals and plants. Two complementary recessive genes, () and , cause hybrid breakdown in rice (). The present study delimited the locus to a 9.
View Article and Find Full Text PDFSynthetic Periodontal Guided Tissue Regeneration Membrane with Self-Assembling Biphasic Structure and Temperature-Sensitive Shape Maintenance.
Adv Healthc Mater
October 2024
Department of Biologic and Materials Science, School of Dentistry, University of Michigan, Ann Arbor, MI, 48109, USA.
Periodontal disease poses significant challenges to the long-term stability of oral health by destroying the supporting structures of teeth. Guided tissue regeneration techniques, particularly barrier membranes, enable local regeneration by providing an isolated, protected compartment for osseous wound healing while excluding epithelial tissue. Here, this study reports on a thermosensitive periodontal membrane (TSPM) technology designed to overcome the mechanical limitations of current membranes through a semi-interpenetrating network of high molecular weight poly(L-lactic acid) (PLLA) and in situ-polymerized mesh of poly(ε-caprolactone)diacrylate (PCL-DA), and poly lactide-co-glycolide diacrylate (PLGA-DA).
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