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a novel acrylic acid-functionalized fe3o4 magnetic nanoparticle with a core-shell structure was developed for utilization as a heterogeneous organosuperacid in chemical transformations. the structural, surface, and magnetic characteristics of the nanosized catalyst were investigated by various techniques such as transmission electron microscopy (tem), thermogravimetric analysis (tga), and ft-ir...
3'-5' exonucleases are frequently found to be associated to polymerases or helicases domains in the same enzyme or could function as autonomous entities. Here we uncovered that Candida albicans Pif1 (CaPif1) displays a 3'-5' exonuclease activity besides its main helicase activity. These two latter activities appear to reside on the same polypeptide and the new exonuclease activity could be mapp...
3-Ketovalidoxylamine A C-N lyase and glucoside 3-dehydrogenase (G3DH), two key enzymes for valienamine synthesis, are produced by Stenotrophomonas maltrophilia. The condition of producing 3ketovalidoxylamine A C-N lyase and G3DH was optimized. Validamycin A was showed to be suitable carbon source for C-N lyase and G3DH synthesis. Maximum C-N lyase production was achieved by adding 100 ml cultur...
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