Altered deoxyribonucleotide pools in T-lymphoblastoid cells expressing the multisubstrate nucleoside kinase of Drosophila melanogaster [PDF]
The multisubstrate nucleoside kinase of Drosophila melanogaster (Dm-dNK) can be expressed in human solid tumor cells and its unique enzymatic properties makes this enzyme a suicide gene candidate.
Balzarini, J+4 more
core +1 more source
Inverse enzyme isotope effects in human purine nucleoside phosphorylase with heavy asparagine labels
Significance Enzymes achieve catalytic efficiency by optimizing contacts between reactants and catalytic site amino acids. The transition state forms rarely, with a lifetime of a few femtoseconds.
R. Harijan+4 more
semanticscholar +1 more source
Design and Synthesis of New Modified Flexible Purine Bases as Potential Inhibitors of Human PNP
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
Upregulation of inducible NO synthase by exogenous adenosine in vascular smooth muscle cells activated by inflammatory stimuli in experimental diabetes [PDF]
BACKGROUND: Adenosine has been shown to induce nitric oxide (NO) production via inducible NO synthase (iNOS) activation in vascular smooth muscle cells (VSMCs). Although this is interpreted as a beneficial vasodilating pathway in vaso-occlusive disorders,
Cignarella, Andrea+4 more
core +2 more sources
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
Energy metabolism during the maturation of reticulocyte in vitro [PDF]
1. For the purpose to clarify the mechanism of the revolutional changes in energy metabolism during the reticulocyte maturation the metabolisms of glucose and of the pentose moieties of acid soluble nucleotides have been observed on rabbit reticulocytes ...
Hayashi, Kenji+5 more
core +1 more source
De novo assembly and transcriptome analysis of Plasmodium gallinaceum identifies the Rh5 interacting protein (ripr), and reveals a lack of EBL and RH gene family diversification [PDF]
BACKGROUND: Malaria parasites that infect birds can have narrow or broad host-tropisms. These differences in host specificity make avian malaria a useful model for studying the evolution and transmission of parasite assemblages across geographic ranges ...
Lauron, Elvin J+3 more
core +13 more sources
Previous research has shown that propolis has immunomodulatory activity. Propolis extracts from different geographic origins were assessed for their anti-inflammatory activities by investigating their ability to alter the production of tumour necrosis ...
Abdulmalik M. Alqarni+6 more
semanticscholar +1 more source
A specific adenosine phosphorylase, distinct from purine nucleoside phosphorylase
Several enzymes, catalyzing the reversible phosphorolysis of purine nucleosides have been described in eucaryotic cells and in micro-organisms [l-6] . The best known is the ‘purine nucleoside phosphorylase’ (EC 2.4.2.1) acting on the nucleosides of hypoxanthine and guanine. Adenosine is not used as substrate by this enzyme [6-81.
SENESI, SONIA+4 more
openaire +6 more sources
Neuroblastoma arises from neural crest cell precursors failing to complete the process of differentiation. Thus, agents helping tumor cells to differentiate into normal cells can represent a valid therapeutic strategy.
Natale Belluardo+13 more
doaj +1 more source