Results 21 to 30 of about 20,168 (266)
Efficient Biocatalytic Synthesis of Dihalogenated Purine Nucleoside Analogues Applying Thermodynamic Calculations [PDF]
, 2020 The enzymatic synthesis of nucleoside analogues has been shown to be a sustainable and efficient alternative to chemical synthesis routes. In this study, dihalogenated nucleoside analogues were produced by thermostable nucleoside phosphorylases in ...
Giessmann, Robert T. +9 more
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Purine Nucleoside Phosphorylase Deficiency [PDF]
Arthritis & Rheumatism, 1979 AbstractThe biochemical features of two families with purine nucleoside phosphorylase deficiency are compared. Laboratory studies and an evaluation of kinetic and physical properties of erythrocyte purine nucleoside phosphorylase give evidence that a) the degree of abnormality in uric acid and nucleoside concentrations in plasma and urine reflect the ...
Irving H. Fox +7 more
openaire +2 more sources
PNP inhibitors selectively kill cancer cells lacking SAMHD1
Molecular & Cellular Oncology, 2020 Purine nucleoside phosphorylase inhibitors (PNP-Is) were developed to ablate transformed lymphocytes. However, only some patients with leukemia benefit from PNP-Is. We provide a molecular explanation: the deoxyribonucleoside triphosphate (dNTP) hydrolase
Tamara Davenne, Jan Rehwinkel
doaj +1 more source
Purine Nucleoside Phosphorylase as a Cytosolic Arsenate Reductase [PDF]
Toxicological Sciences, 2002 The findings of the accompanying paper (Németi and Gregus, Toxicol: Sci. 70, 4-12) indicate that the arsenate (AsV) reductase activity of rat liver cytosol is due to an SH enzyme that uses phosphate (or its analogue, arsenate, AsV) and a purine nucleoside (guanosine or inosine) as substrates. Purine nucleoside phosphorylase (PNP) is such an enzyme.
Zoltán Gregus
openalex +4 more sources
Thermodynamic reaction control of nucleoside phosphorolysis [PDF]
, 2020 Nucleoside analogs represent a class of important drugs for cancer and antiviral treatments. Nucleoside phosphorylases (NPases) catalyze the phosphorolysis of nucleosides and are widely employed for the synthesis of pentose‐1‐phosphates and nucleoside ...
Giessmann, Robert T. +4 more
core +1 more source
Nucleotide analogue inhibitors of purine nucleoside phosphorylase.
Journal of Biological Chemistry, 1990 The diphosphate of the antiherpetic agent acyclovir [9-[(2-hydroxyethoxy)methyl]guanine] has been shown to inhibit purine nucleoside phosphorylase with unique potency (Tuttle, J. V., and Krenitsky, T. A. (1984) J. Biol. Chem. 259, 4065-4069). A major factor contributing to the superior inhibition by this diphosphate over the corresponding mono- and ...
Thomas A. Krenitsky +5 more
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An Enzymatic Flow-Based Preparative Route to Vidarabine
Molecules, 2020 The bi-enzymatic synthesis of the antiviral drug vidarabine (arabinosyladenine, ara-A), catalyzed by uridine phosphorylase from Clostridium perfringens (CpUP) and a purine nucleoside phosphorylase from Aeromonas hydrophila (AhPNP), was re-designed under ...
Lucia Tamborini +10 more
doaj +1 more source
Structure of purine nucleoside phosphorylase (DeoD) from Bacillus anthracis [PDF]
, 2005 Protein structures from the causative agent of anthrax (Bacillus anthracis) are being determined as part of a structural genomics programme. Amongst initial candidates for crystallographic analysis are enzymes involved in nucleotide biosynthesis, since ...
Blagova, E V +6 more
core +3 more sources
Purine nucleoside phosphorylase: A new marker for free oxygen radical injury to the endothelial cell [PDF]
, 1990 The effect of ischemia and reperfusion on purine nucleoside phosphorylase was studied in an isolated perfused rat liver model. This enzyme is localized primarily in the cytoplasm of the endothelial and Kupffer cells; some activity is associated with the ...
Abouna +32 more
core +1 more source
Targeting purine metabolism in ovarian cancer
Journal of Ovarian Research, 2022 Purine, an abundant substrate in organisms, is a critical raw material for cell proliferation and an important factor for immune regulation. The purine de novo pathway and salvage pathway are tightly regulated by multiple enzymes, and dysfunction in ...
Jingchun Liu +7 more
doaj +1 more source