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In Vitro Rooting of Poplar: Effects and Metabolism of Dichlorprop Auxin Ester Prodrugs.

Plants (Basel)

January 2025

Laboratory for Applied In Vitro Plant Biotechnology, Ghent University, 9000 Ghent, Belgium.

Efficient adventitious root formation is essential in micropropagation. Auxin prodrugs, inactive precursors that convert into active auxins within the plant, offer potentially improved rooting control and reduced phytotoxicity. This study investigated the efficacy of dichlorprop ester (DCPE), commercialized as Corasil and Clemensgros (originally intended to increase grapefruit size), in promoting in vitro root initiation in the model plant × , compared to its hydrolyzed form DCP and the related compound C77.

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Direct visualization of electric-field-stimulated ion conduction in a potassium channel.

Cell

January 2025

Department of Molecular and Cell Biology and School of Engineering and Applied Sciences, Harvard University, Cambridge, MA, USA. Electronic address:

Understanding protein function would be facilitated by direct, real-time observation of chemical kinetics in the atomic structure. The selectivity filter (SF) of the K channel provides an ideal model, catalyzing the dehydration and transport of K ions across the cell membrane through a narrow pore. We used a "pump-probe" method called electric-field-stimulated time-resolved X-ray crystallography (EFX) to initiate and observe K conduction in the NaK2K channel in both directions on the timescale of the transport process.

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Palmitoylation-dependent association with Annexin II directs hepatitis E virus ORF3 sorting into vesicles and quasi-enveloped virions.

Proc Natl Acad Sci U S A

January 2025

Division of Livestock Infectious Diseases, State Key Laboratory for Animal Disease Control and Prevention, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin 150069, China.

Historically considered to be nonenveloped, hepatitis E virus (HEV), an important zoonotic pathogen, has recently been discovered to egress from infected cells as quasi-enveloped virions. These quasi-enveloped virions circulating in the blood are resistant to neutralizing antibodies, thereby facilitating the stealthy spread of infection. Despite abundant evidence of the essential role of the HEV-encoded ORF3 protein in quasi-enveloped virus formation, the underlying mechanism remains unclear.

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The multiple facets of Rab proteins modulating the cellular distribution of cholesterol from the late endosomal compartment.

Biochim Biophys Acta Mol Cell Res

January 2025

School of Pharmacy, Faculty of Medicine and Health, University of Sydney, Sydney, NSW 2006, Australia. Electronic address:

Cholesterol is an essential lipid that ensures the functional integrity of mammalian cells. Most cells acquire cholesterol via endocytosis of low-density lipoproteins (LDL). Upon reaching late endosomes/lysosomes (LE/Lys), incoming ligands, including LDL-derived cholesterol, are distributed to other organelles.

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Exquisite sensitivity of Polycystin-1 to HO concentration in the endoplasmic reticulum.

Redox Biol

December 2024

Division of Genetics and Cell Biology, Istituto di Ricovero e Cura a Carattere Scientifico (IRCCS) Ospedale San Raffaele, 20132, Milan, Italy; Università Vita-Salute San Raffaele, 20132, Milan, Italy. Electronic address:

Aquaporin11 (AQP11) is an endoplasmic reticulum (ER) resident peroxiporin. It allows HO transport from the lumen to the cytosol, guaranteeing redox homeostasis and signaling in and between the two organelles. Interestingly, Aqp11 mice develop a fatal, early onset polycystic kidney disease (PKD) similar to Autosomal Dominant PKD, a condition frequently associated with mutations of polycystin-1 (PC-1) in human patients.

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