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Two azobenzenesulfonamide molecules with thermally stable configurations resulting from fluorination of positions to the azo group are reported that can differentially regulate the activity of carbonic anhydrase in the and configurations. These fluorinated probes each use two distinct visible wavelengths (520 and 410 or 460 nm) for isomerization with high photoconversion efficiency. Correspondingly, the isomer of these systems is highly stable and persistent (as evidenced by structural studies in solid and solution state), permitting regulation of metalloenzyme activity without continuous irradiation. Herein, we use these probes to demonstrate the visible light mediated bidirectional control over the activity of zinc-dependent carbonic anhydrase in solution as an isolated protein, in intact live cells and in zebrafish during embryo development.
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http://dx.doi.org/10.1021/jacs.0c05383 | DOI Listing |
Surg Case Rep
September 2025
Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Kyoto, Japan.
Introduction: von Hippel-Lindau (VHL) disease is an autosomal dominant hereditary disorder characterized by the development of tumor-like lesions in multiple organs. While central nervous system hemangioblastomas, pancreatic neuroendocrine tumors, and pancreatic cysts are commonly associated with VHL disease, there have been few reported cases of pancreatic hemangioblastoma in patients with VHL disease.
Case Presentation: A male patient in his 30s had been diagnosed with VHL disease and had been followed for cerebellar and spinal hemangioblastomas, and renal cell carcinoma, for which he had undergone several tumor resections, radiation therapy, and a ventriculoperitoneal shunt.
Angew Chem Int Ed Engl
September 2025
State Key Laboratory of Advanced Drug Delivery and Release Systems, Institute of Pharmaceutics, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, 310058, China.
Photo-responsive systems provide a powerful tool to reversibly regulate enzyme activity. However, inhibitor-based strategies, though widely used, are often restricted to specific enzymes. Noninhibitor strategies, such as enzyme surface modification or genetic mutation, often compromise structural integrity or residual activity.
View Article and Find Full Text PDFJ Proteome Res
September 2025
State Key Laboratory of Breeding Biotechnology and Sustainable Aquaculture, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China.
Shell matrix proteins (SMPs) are fundamental biological macromolecules for mollusk shell formation, yet fewer than 400 SMPs in mollusks have been previously identified, hindering our understanding of how mollusks construct and maintain their shells. Here, we identified 1689 SMPs in the Pacific oyster using three different mass spectrometry techniques, representing a significant methodological advancement in shell proteomics, enabling a 6.52-fold increase in SMP identification compared to previous studies.
View Article and Find Full Text PDFMar Life Sci Technol
August 2025
State Key Laboratory of Estuarine and Coastal Research, East China Normal University, Shanghai, 200241 China.
Unlabelled: CO concentration mechanisms (CCMs) are important in maintaining the high efficiency of photosynthesis of marine algae. Aquatic photoautotrophs have two types of CCMs: biophysical CCMs, based on the conversion of inorganic carbon, and biochemical CCMs, based on the formation of C acid intermediates. However, the contribution of biophysical and biochemical CCMs to algal carbon fixation remains unclear.
View Article and Find Full Text PDFACS Omega
September 2025
Department of Chemistry, Faculty of Arts and Sciences, Kafkas University, 36040 Kars, Turkey.
In this study, we synthesized a series of novel -acetyl Schiff bases (-) containing 1,2,4-triazole moiety and evaluated their potential as anticancer agents through both experimental and computational approaches. Cytotoxicity assays on prostate cancer (PC) (DU145) and normal epithelial cells (PNT1a) demonstrated selective inhibition, particularly for compounds , , and , with IC values of 73.25, 49.
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