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Autophagy in Plant Health and Disease.
Annu Rev Plant Biol
January 2025
1Gregor Mendel Institute of Molecular Plant Biology, Vienna, Austria; email:
Autophagy has emerged as an essential quality control pathway in plants that selectively and rapidly removes damaged or unwanted cellular components to maintain cellular homeostasis. It can recycle a broad range of cargoes, including entire organelles, protein aggregates, and even invading microbes. It involves the de novo biogenesis of a new cellular compartment, making it intimately linked to endomembrane trafficking pathways.
View Article and Find Full Text PDFBistable Functions and Signaling Motifs in Systems Chemistry: Taking the Next Step Toward Synthetic Cells.
Acc Chem Res
January 2025
Department of Chemistry, Ben-Gurion University of the Negev, Be'er Sheva 84105, Israel.
ConspectusA key challenge in modern chemistry research is to mimic life-like functions using simple molecular networks and the integration of such networks into the first functional artificial cell. Central to this endeavor is the development of signaling elements that can regulate the cell function in time and space by producing entities of code with specific information to induce downstream activity. Such artificial signaling motifs can emerge in nonequilibrium systems, exhibiting complex dynamic behavior like bistability, multistability, oscillations, and chaos.
View Article and Find Full Text PDFElucidating assembly and function of VirB8 cell wall subunits refines the DNA translocation model in Gram-positive T4SSs.
Sci Adv
January 2025
Université de Lorraine, INRAE, DynAMic, F-54000 Nancy, France.
Bacterial type IV secretion systems (T4SSs) are widespread nanomachines specialized in the transport across the cell envelope of various types of molecules including mobile genetic elements during conjugation. Despite their prevalence in Gram-positive bacteria, including relevant pathogens, their assembly and functioning remain unknown. This study addresses these gaps by investigating VirB8 proteins, known to be central components of conjugative T4SSs in Gram-positive bacteria.
View Article and Find Full Text PDFGlobal cellular proteo-lipidomic profiling of diverse lysosomal storage disease mutants using nMOST.
Sci Adv
January 2025
Department of Cell Biology, Blavatnik Institute, Harvard Medical School, Boston, MA 02115, USA.
Lysosomal storage diseases (LSDs) comprise ~50 monogenic disorders marked by the buildup of cellular material in lysosomes, yet systematic global molecular phenotyping of proteins and lipids is lacking. We present a nanoflow-based multiomic single-shot technology (nMOST) workflow that quantifies HeLa cell proteomes and lipidomes from over two dozen LSD mutants. Global cross-correlation analysis between lipids and proteins identified autophagy defects, notably the accumulation of ferritinophagy substrates and receptors, especially in and mutants, where lysosomes accumulate cholesterol.
View Article and Find Full Text PDFThe deubiquitinase USP5 prevents accumulation of protein aggregates in cardiomyocytes.
Sci Adv
January 2025
Department of Cardiac Development and Remodeling, Max Planck Institute for Heart and Lung Research, Bad Nauheim, Germany.
Protein homeostasis is crucial for maintaining cardiomyocyte (CM) function. Disruption of proteostasis results in accumulation of protein aggregates causing cardiac pathologies such as hypertrophy, dilated cardiomyopathy (DCM), and heart failure. Here, we identify ubiquitin-specific peptidase 5 (USP5) as a critical determinant of protein quality control (PQC) in CM.
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