Results 61 to 70 of about 20,168 (266)

Role of the human concentrative nucleoside transporter (hCNT1) in the cytotoxic action of 5[Prime]-deoxy-5-fluorouridine, an active intermediate metabolite of capecitabine, a novel oral anticancer drug. [PDF]

, 2001
We attempt to identify the plasma membrane transporter involved in the uptake of 5'-deoxy-5-fluorouridine (5'-DFUR), an intermediate metabolite of capecitabine.
Casado, F.J. (F. Javier), Fernandez-Veledo, S. (Sonia), Garcia-Manteiga, J.M. (José M.), Guillen-Gomez, E. (Elena), Larrayoz, I.M. (Ignacio M.), LLoberas, J. (Jorge), Lostao, M.P. (María Pilar), Mata, J.F. (Joao F.), Pastor-Anglada, M. (Marçal)   +8 more
core   +1 more source

First‐in‐class inhibitors of SbnA reduce siderophore production in Staphylococcus aureus

The FEBS Journal, EarlyView.
The production of the iron‐chelating compound staphyloferrin B by the most invasive S. aureus strains is crucial for colonization, virulence, and survival in the host. Staphyloferrin B biosynthesis is carried out by eight enzymes, the Sbn system, that offer an appealing source of potential targets for the development of antimicrobials.
Sarah Hijazi, Monica Cozzi, Somayeh Asgharpour, Omar De Bei, Serena Faggiano, Francesco Marchesani, Luca Ronda, Marialaura Marchetti, Eleonora Gianquinto, Mariacristina Failla, Gauthier Trèves, Loretta Lazzarato, Francesca Spyrakis, Barbara Campanini, Emanuela Frangipani, Stefano Bettati   +15 more
wiley   +1 more source

Partial Purine Nucleoside Phosphorylase Deficiency Helps Determine Minimal Activity Required for Immune and Neurological Development

Frontiers in Immunology, 2020
Introduction: Complete or near complete absence of the purine nucleoside phosphorylase (PNP) enzyme causes a profound T cell immunodeficiency and neurological abnormalities that are often lethal in infancy and early childhood.
Eyal Grunebaum, Eyal Grunebaum, Nicholas Campbell, Matilde Leon-Ponte, Xiaobai Xu, Hugo Chapdelaine   +5 more
doaj   +1 more source

N‐ to C‐Glycoside Rearrangement of Uridine 5′‐Phosphate in Two Enzymatic Steps for the Production of Pseudouridine 5′‐Phosphate

Biotechnology and Bioengineering, Volume 122, Issue 9, Page 2456-2464, September 2025.
The authors present a streamlined cascade reaction for one‐pot N‐C rearrangement of uridine‐5′‐phosphate (UMP) to pseudouridine‐5′‐phosphate (ΨMP; a key mRNA vaccine building block), in two enzymatic steps catalyzed by UMP nucleosidase (EC 3.2.2.10) and ΨMP C‐glycosidase (EC 4.2.1.70).
Martin Pfeiffer, Franziska Guld, Bernd Nidetzky   +2 more
wiley   +1 more source

Insights into phosphate cooperativity and influence of substrate modifications on binding and catalysis of hexameric purine nucleoside phosphorylases. [PDF]

PLoS ONE, 2012
The hexameric purine nucleoside phosphorylase from Bacillus subtilis (BsPNP233) displays great potential to produce nucleoside analogues in industry and can be exploited in the development of new anti-tumor gene therapies.
Priscila O de Giuseppe, Nadia H Martins, Andreia N Meza, Camila R dos Santos, Humberto D'Muniz Pereira, Mario T Murakami   +5 more
doaj   +1 more source

Radical Dehalogenation and Purine Nucleoside Phosphorylase E. coli: How Does an Admixture of 2′,3′-Anhydroinosine Hinder 2-fluoro-cordycepin Synthesis

Biomolecules, 2021
During the preparative synthesis of 2-fluorocordycepin from 2-fluoroadenosine and 3′-deoxyinosine catalyzed by E. coli purine nucleoside phosphorylase, a slowdown of the reaction and decrease of yield down to 5% were encountered.
Alexey L. Kayushin, Julia A. Tokunova, Ilja V. Fateev, Alexandra O. Arnautova, Maria Ya. Berzina, Alexander S. Paramonov, Olga I. Lutonina, Elena V. Dorofeeva, Konstantin V. Antonov, Roman S. Esipov, Igor A. Mikhailopulo, Anatoly I. Miroshnikov, Irina D. Konstantinova   +12 more
doaj   +1 more source

Descriptor-and fragment-based QSAR models for a series of Schistosoma mansoni purine nucleoside inhibitors [PDF]

, 2011
The enzyme purine nucleoside phosphorylase from Schistosoma mansoni (SmPNP) is an attractive molecular target for the treatment of major parasitic infectious diseases, with special emphasis on its role in the discovery of new drugs against ...
ANDRICOPULO, Adriano Defini, CASTILHO, Marcelo S, FREITAS, Humberto F, POSTIGO, Matheus P   +3 more
core   +1 more source

Modeling and Optimization of Microwave Vacuum Drying for Pinelliae Rhizoma: Integrating Drying Kinetics, Artificial Neural Networks, and Quality Preservation

Food Science &Nutrition, Volume 13, Issue 8, August 2025.
The peeled Pinellia ternata (Thunb.) Breit tubers were dried with the microwave vacuum drying oven. Then, its drying characteristics, contents of nucleosides, and surface microstructural alterations of dried samples were determined, respectively. Drying parameters were predicted and optimized using four different mathematical models and artificial ...
Pan Wang, Xiaoping Yang, Xiaopeng Huang, Guojun Ma, Shidong Zhang, Siqi Wang, Ming Wang, Zewen Zhu, Yanrui Xu, ZePeng Zang, Xu Liu   +10 more
wiley   +1 more source

A UV/Vis Spectroscopy-Based Assay for Monitoring of Transformations Between Nucleosides and Nucleobases [PDF]

, 2019
Efficient reaction monitoring is crucial for data acquisition in kinetic and mechanistic studies. However, for conversions of nucleosides to their corresponding nucleobases, as observed in enzymatically catalyzed nucleoside phosphorylation reactions, the
Giessmann, Robert T., Gimpel, Matthias, Kaspar, Felix, Krausch, Niels, Neubauer, Peter, Wagner, Anke   +5 more
core   +1 more source

Engineering Substrate Promiscuity of Nucleoside Phosphorylase Via an Insertions–Deletions Strategy

JACS Au
Nucleoside phosphorylases (NPs) are the key enzymes in the nucleoside metabolism pathway and are widely employed for the synthesis of nucleoside analogs, which are difficult to access via conventional synthetic methods.
Gaofei Liu, Jialing Wang, Jianlin Chu, Tianyue Jiang, Song Qin, Zhen Gao, Bingfang He   +6 more
semanticscholar   +1 more source