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Two lead compounds with benzenesulfonamide were found through virtual screening based on the 3D structure of the subunit H of V-ATPase in previous study. 74 benzenesulfonyl derivatives were synthesized and their insecticidal activities were evaluated. The derivatives with propargyl substituents exhibit excellent insecticidal activities against Mythimna separata Walker. The LD values of compounds A5.7 (28.0 μg·g) and B5.7 (36.4 μg·g) were significantly less than that of Celangulin V (344.0 μg·g). Furthermore, Isothermal Titration Calorimetry (ITC) data indicate there is a strong binding affinity between A5.7 and V-ATPase Subunit H. These results demonstrate that it is a practical way to develop pesticides targeting at H subunit of V-ATPase.
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http://dx.doi.org/10.1016/j.bmcl.2018.08.030 | DOI Listing |
Vet Parasitol
August 2025
Ministry of Education Key Laboratory of Molecular and Cellular Biology, Hebei Key Laboratory of Animal Physiology, Biochemistry and Molecular Biology, College of Life Sciences, Hebei Normal University, Shijiazhuang 050024, PR China. Electronic address:
Hyalomma asiaticum can survive in extreme environments including the semi-arid zones and deserts. Investigating the molecular mechanisms of the tolerance of ticks to extreme temperatures could help tick control by interfering with their temperature tolerance. A comprehensive analysis of the regulatory mechanisms of proteins in the hemolymph is essential to unraveling the survival strategies of ticks in harsh environments.
View Article and Find Full Text PDFNat Commun
August 2025
Stem Cells and Metabolism Research Program and Department of Anatomy, Faculty of Medicine, University of Helsinki, Helsinki, Finland.
Sac1 is a conserved phosphoinositide phosphatase, whose loss-of-function compromises cell and organism viability. Here, we employ acute auxin-inducible Sac1 degradation to identify its immediate downstream effectors in human cells. Most of Sac1 is degraded in ~1 h, paralleled by increased PI(4)P and decreased cholesterol in the trans-Golgi network (TGN) during the following hour, and superseded by Golgi fragmentation, impaired glycosylation, and selective degradation of TGN proteins by ~4 h.
View Article and Find Full Text PDFAutophagy
August 2025
Center for Metabolism Research, International Institutes of Medicine, International School of Medicine and the Fourth Affiliated Hospital of Zhejiang University, Yiwu, China.
Microautophagy is a selective cellular process in which endolysosomes directly engulf cytoplasmic cargo through membrane invagination. The regulatory mechanisms governing microautophagy remain poorly understood. Here, we identified the deacetylation of ATG16L1 as a critical regulator of LC3-associated lysosomal microautophagy.
View Article and Find Full Text PDFbioRxiv
August 2025
Department of Biochemistry and Molecular Biology, SUNY Upstate Medical University, Syracuse, NY 13210.
In yeast, early adaptation to hyperosmotic stress involves organelle-based mechanisms, including synthesis of phosphatidylinositol 3,5-bisphosphate (PI(3,5)P) at the vacuole. This low-level signaling lipid drives vacuolar fragmentation and activates the V-ATPase proton pump, which acidifies the vacuole and drives salt sequestration. The vacuole-resident V-ATPase subunit Vph1 interacts with PI(3,5)P via its N-terminal domain (Vph1NT), directly linking lipid signaling to proton pump regulation.
View Article and Find Full Text PDFbioRxiv
July 2025
Department of Biological Sciences, Eukaryotic Pathogens Innovation Center, Clemson University, Clemson, South Carolina, 29634.
Tissue-resident macrophages efficiently internalize spores, forming a critical first line of defense against infection. However, the mechanisms that these cells use to control spores in vivo remain incompletely defined. Here, we used the live imaging capabilities of the larval zebrafish host model to assess the role of the v-ATPase complex in macrophage-mediated defense against in a whole vertebrate animal.
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