Results 11 to 20 of about 112 (103)

Nucleoside Phosphorylases make N7-xanthosine

Nature Communications
Modern, highly evolved nucleoside-processing enzymes are known to exhibit perfect regioselectivity over the glycosylation of purine nucleobases at N9. We herein report an exception to this paradigm.
Sarah Westarp, Felix Brandt, Lena Neumair, Christina Betz, Amin Dagane, Sebastian Kemper, Christoph R. Jacob, Peter Neubauer, Anke Kurreck, Felix Kaspar   +9 more
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Diversification of 4′-Methylated Nucleosides by Nucleoside Phosphorylases [PDF]

ACS Catalysis, 2021
The growing demand for 4'-modified nucleoside analogs in medicinal and biological chemistry is contrasted by the challenging synthetic access to these molecules and the lack of efficient diversification strategies. Herein, we report the development of a biocatalytic diversification approach based on nucleoside phosphorylases, which allows the ...
Felix Kaspar, Margarita Seeger, Sarah Westarp, Christoph Köllmann, Anna P. Lehmann, Patrick Pausch, Sebastian Kemper, Peter Neubauer, Gert Bange, Anett Schallmey, Daniel Werz, Anke Kurreck   +11 more
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Purine nucleoside phosphorylase [PDF]

Biomeditsinskaya Khimiya, 2013
Purine nucleoside phosphorylase (PNP) is one of the most important enzymes of the purine metabolism, wich promotes the recycling of purine bases. Nowadays is the actual to search for effective inhibitors of this enzyme which is necessary for creation T-cell immunodeficient status of the organism in the organs and tissues transplantation, and ...
L G, Pogosian, Zh I, Akopian
openaire   +2 more sources

Some inhibitors of purine nucleoside phosphorylase [PDF]

Biomeditsinskaya Khimiya, 2011
Purine nucleoside phosphorylase (PNP) catalyzes reversible phosphorolysis of purine deoxy- and ribonucleosides with formation (d)Rib-1-P and corresponding bases. PNP plays a leading role in the cell metabolism of nucleosides and nucleotides, as well as in maintaining the immune status of an organism.
L G, Pogosian, L S, Nersesova, M G, Gazariants, Z S, Mkrtchian, Zh I, Akopian   +4 more
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Efficient Synthesis of Purine Nucleoside Analogs by a New Trimeric Purine Nucleoside Phosphorylase from Aneurinibacillus migulanus AM007

Molecules, 2019
Purine nucleoside phosphorylases (PNPs) are promising biocatalysts for the synthesis of purine nucleoside analogs. Although a number of PNPs have been reported, the development of highly efficient enzymes for industrial applications is still in high ...
Gaofei Liu, Tiantong Cheng, Jianlin Chu, Sui Li, Bingfang He   +4 more
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Tricyclic Nucleobase Analogs and Their Ribosides as Substrates and Inhibitors of Purine-Nucleoside Phosphorylases III. Aminopurine Derivatives

Molecules, 2020
Etheno-derivatives of 2-aminopurine, 2-aminopurine riboside, and 7-deazaadenosine (tubercidine) were prepared and purified using standard methods. 2-Aminopurine reacted with aqueous chloroacetaldehyde to give two products, both exhibiting substrate ...
Alicja Stachelska-Wierzchowska, Jacek Wierzchowski, Michał Górka, Agnieszka Bzowska, Ryszard Stolarski, Beata Wielgus-Kutrowska   +5 more
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Immobilized Enzyme Reactors Based on Nucleoside Phosphorylases (NPs) and Nucleoside 2′-Deoxyribosyltransferases (NDTs) for the In-Flow Synthesis of Nucleoside Analogues

Proceedings, 2019
Enzymes are increasingly used as biocatalysts for the production of Active Pharmaceutical [...]
Marco Terreni, Francesca Rinaldi, Caterina Temporini, Enrica Calleri, Gabriella Massolini, Daniela Ubiali   +5 more
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The molecular structure of Schistosoma mansoni PNP isoform 2 provides insights into the nucleoside selectivity of PNPs.

PLoS ONE, 2018
Purine nucleoside phosphorylases (PNPs) play an important role in the blood fluke parasite Schistosoma mansoni as a key enzyme of the purine salvage pathway. Here we present the structural and kinetic characterization of a new PNP isoform from S. mansoni,
Juliana Roberta Torini, Larissa Romanello, Fernanda Aparecida Heleno Batista, Vitor Hugo Balasco Serrão, Muhammad Faheem, Ana Eliza Zeraik, Louise Bird, Joanne Nettleship, Yamini Reddivari, Ray Owens, Ricardo DeMarco, Júlio César Borges, José Brandão-Neto, Humberto D'Muniz Pereira   +13 more
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Anion exchange resins in phosphate form as versatile carriers for the reactions catalyzed by nucleoside phosphorylases

Beilstein Journal of Organic Chemistry, 2020
In the present work, we suggested anion exchange resins in the phosphate form as a source of phosphate, one of the substrates of the phosphorolysis of uridine, thymidine, and 1-(β-ᴅ-arabinofuranosyl)uracil (Ara-U) catalyzed by recombinant E. coli uridine
Julia N. Artsemyeva, Ekaterina A. Remeeva, Tatiana N. Buravskaya, Irina D. Konstantinova, Roman S. Esipov, Anatoly I. Miroshnikov, Natalia M. Litvinko, Igor A. Mikhailopulo   +7 more
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Tri-Cyclic Nucleobase Analogs and Their Ribosides as Substrates of Purine-Nucleoside Phosphorylases. II Guanine and Isoguanine Derivatives

Molecules, 2019
Etheno-derivatives of guanine, O6-methylguanine, and isoguanine were prepared and purified using standard methods. The title compounds were examined as potential substrates of purine-nucleoside phosphorylases from various sources in the reverse ...
Alicja Stachelska-Wierzchowska, Jacek Wierzchowski, Michał Górka, Agnieszka Bzowska, Beata Wielgus-Kutrowska   +4 more
doaj   +1 more source