Results 131 to 140 of about 25,543 (277)

Purine nucleoside phosphorylase from Schistosoma mansoni in complex with ribose-1-phosphate [PDF]

open access: yes, 2011
A binary complex between a low-molecular-weight purine nucleoside phosphorylase and ribose-1-phosphate is described for the first time and comparisons with known ternary complexes are ...
D’Muniz Pereira, Humberto   +2 more
core   +2 more sources

The clinical diagnostic value of a study of the activity of enzymes of the guanyl branch of purine metabolism in patients with ankylosing spondyloarthritis

open access: yesТерапевтический архив, 2010
Aim. To assess the diagnosis of the activity of a pathological process in patients with ankylosing spondyloarthritis (AS) and to reveal purine metabolic (PM) changes in relation to the clinical features of AS. Materials and methods.
Aleksandr Borisovich Zborovskiy   +11 more
doaj  

Fused Heterocyclic Systems with an s-Triazine Ring. 34. Development of a Practical Approach for the Synthesis of 5-Aza-isoguanines

open access: yesMolecules, 2019
Purine isosteres present excellent opportunities in drug design and development. Using isosteres of natural purines as scaffolds for the construction of new therapeutic agents has been a valid strategy of medicinal chemistry.
Ahmad Junaid   +4 more
doaj   +1 more source

A depletable pool of adenosine in area CA1 of the rat hippocampus [PDF]

open access: yes, 2001
Adenosine plays a major modulatory and neuroprotective role in the mammalian CNS. During cerebral metabolic stress, such as hypoxia or ischemia, the increase in extracellular adenosine inhibits excitatory synaptic transmission onto vulnerable neurons via
Caldwell, Darren   +4 more
core   +1 more source

The Regulation of Brain Nucleoside Utilization [PDF]

open access: yes, 2014
The homeostatic regulation of intracellular purine and pyrimidine pools has long been studied at the level of de novo nucleotide synthesis. However, brain maintains the proper qualitative and quantitative nucleotide balance by salvaging preformed ...
BALESTRI, FRANCESCO, IPATA, PIERO LUIGI
core   +1 more source

Computer-aided rational design of acyclovir analogs to inhibit purine nucleoside phosphorylase

open access: yesPharmaceutical and Biomedical Research, 2019
Purine nucleoside phosphorylase (PNP) is one of the major enzymes in the purine salvage pathway. It is responsible for the elevation of deoxyguanosine, and thus considered as the potent target in T-cell lymphoma.
Nusrat Jahan Selsi   +9 more
doaj  

Purine Nucleoside Phosphorylase Deficiency in Two Unrelated Patients with Autoimmune Hemolytic Anemia and Eosinophilia: Two Novel Mutations. [PDF]

open access: yesArch Iran Med, 2023
Alizadeh Z   +6 more
europepmc   +1 more source

Connecting Conformational Motions to Rapid Dynamics in Human Purine Nucleoside Phosphorylase. [PDF]

open access: yesJ Phys Chem B, 2023
Frost CF   +3 more
europepmc   +1 more source

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