Results 51 to 60 of about 25,575 (276)

Identifying purine nucleoside phosphorylase as the target of quinine using cellular thermal shift assay

open access: yesScience Translational Medicine, 2019
A cellular thermal shift assay (CETSA) protocol identifies and resolves antimalarial drug targets in P. falciparum. Defining drug targets in malaria Different classes of malaria drugs have been used for decades, even though the mechanisms of action have ...
J. Dziekan   +9 more
semanticscholar   +1 more source

Pyrazolo[4,3-e][1,2,4]triazines: Purine Analogues with Electronic Absorption in the Visible Region

open access: yesMolecules, 2005
Synthesis of several pryrazolo[4,3-e][1,2,4]-triazines is described. Theabsorption spectrum of some 5-substituted derivatives was found to extend to the visibleregion.
Jacek Wierzchowski   +2 more
doaj   +1 more source

Plasmodium falciparum parasites are killed by a transition state analogue of purine nucleoside phosphorylase in a primate animal model. [PDF]

open access: yesPLoS ONE, 2011
Plasmodium falciparum causes most of the one million annual deaths from malaria. Drug resistance is widespread and novel agents against new targets are needed to support combination-therapy approaches promoted by the World Health Organization. Plasmodium
MarĂ­a B Cassera   +11 more
doaj   +1 more source

Ethenoguanines undergo glycosylation by nucleoside 2'-deoxyribosyltransferases at non-natural sites. [PDF]

open access: yesPLoS ONE, 2014
Deoxyribosyl transferases and functionally related purine nucleoside phosphorylases are used extensively for synthesis of non-natural deoxynucleosides as pharmaceuticals or standards for characterizing and quantitating DNA adducts.
Wenjie Ye   +10 more
doaj   +1 more source

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

open access: yes, 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.   +5 more
core   +1 more source

Design and Synthesis of New Modified Flexible Purine Bases as Potential Inhibitors of Human PNP

open access: yesMolecules, 2023
The great interest in studying the structure of human purine nucleoside phosphorylase (hPNP) and the continued search for effective inhibitors is due to the importance of the enzyme as a target in the therapy of T-cell proliferative diseases. In addition,
Anastasia Khandazhinskaya   +7 more
doaj   +1 more source

Nucleoside-dependent synthesis of organic phosphorus compounds by rat liver nuclei [PDF]

open access: yes, 1967
a) A modified procedure of the WIDNELL and TATA8 method yields rat liver nuclei manifesting a high degree of purity and activity. b) These nuclei contain a nucleoside-dependent phosphorylating activity that is readily released and apparently unrelated to
Utsumi, Kozo
core   +1 more source

Ischemic nucleotide breakdown increases during cardiac development due to drop in adenosine anabolism/catabolism ratio [PDF]

open access: yes, 1990
Our earlier work on reperfusion showed that adult rat hearts released almost twice as much purine nucleosides and oxypurines as newborn hearts did [Am J Physiol 254 (1988) H1091].
Huizer, T. (Tom)   +3 more
core   +2 more sources

The First Purine Nucleoside Phosphorylase Deficiency Patient Resembling IgA Deficiency and a Review of the Literature

open access: yesImmunological Investigations, 2019
Purine nucleoside phosphorylase (PNP) deficiency is a rare autosomal recessive primary immunodeficiency disorder characterized by decreased numbers of T-cells, variable B-cell abnormalities, decreased amount of serum uric acid and PNP enzyme activity ...
Saba Fekrvand   +4 more
semanticscholar   +1 more source

Intracellular Delivery of Human Purine Nucleoside Phosphorylase by Engineered Diphtheria Toxin Rescues Function in Target Cells.

open access: yesMolecular Pharmaceutics, 2018
Despite a wealth of potential applications inside target cells, protein-based therapeutics are largely limited to extracellular targets due to the inability of proteins to readily cross biological membranes and enter the cytosol.
Minyoung Park   +8 more
semanticscholar   +1 more source

Home - About - Disclaimer - Privacy