Results 91 to 100 of about 25,696 (291)
Synthesis and enzymatic evaluation of the guanosine analogue 2-amino-6-mercapto-7-methylpurine ribonucleoside (MESG): insights into the phosphorolysis reaction mechanism based on the blueprint transition state: SN1 or SN2? [PDF]
, 2010 A modified experimental procedure for the synthesis of MESG (2-amino-6-mercapto-7-methylpurine ribonucleoside) 1 has been successfully performed and its full characterization is presented.
Basso, Luiz A. +8 more
core +2 more sources
Molecules, 2019 Etheno-derivatives of guanine, O6-methylguanine, and isoguanine were prepared and purified using standard methods. The title compounds were examined as potential substrates of purine-nucleoside phosphorylases from various sources in the reverse ...
Alicja Stachelska-Wierzchowska +4 more
doaj +1 more source
FEBS Open Bio, Volume 15, Issue 7, Page 1090-1102, July 2025.We obtained potential bacterial laccase‐like multicopper oxidase (LMCO) sequences through metagenomic sequencing. All sequences exhibited significant differences from known LMCOs in databases. To select the most promising candidates, we performed structure prediction and molecular docking using alphafold2, metal3d and rosetta.
Ting Cui +5 more
wiley +1 more source
5'-nucleotidases, nucleosides and their distribution in the brain: pathological and therapeutic implications [PDF]
, 2013 Elements of the nucleoside system (nucleoside levels, 5'-nucleotidases (5'NTs) and other nucleoside metabolic enzymes, nucleoside transporters and nucleoside receptors) are unevenly distributed in the brain, suggesting that nucleosides have region ...
Dobolyi, Árpád +3 more
core
Purine Nucleoside Phosphorylase: Allosteric Regulation of a Dissociating Enzyme
Journal of Biological Chemistry, 1991 Purine nucleoside phosphorylase (EC 2.4.2.1) from bovine spleen is a trimeric enzyme that readily dissociates to the monomer. Dilution of enzyme from 20 to 0.02 microgram of protein/ml is accompanied by a greater than 50-fold increase in the specific activity (vtrimer = 0.23 nmol/min/microgram; vmonomer = 12.5 nmol/min/micrograms).
T W, Traut, P A, Ropp, A, Poma
openaire +5 more sources
Adjusting Cell‐Surface Interactions Through a Covalent Immobilization of Biomolecules
Advanced Materials Interfaces, Volume 12, Issue 14, July 25, 2025.This review presents an overview of current and emerging immobilization techniques coupled with an in‐depth investigation of the underlying mechanisms governing the activity and stability of covalently immobilized biomolecules. The aim of this study is to serve as a guide for the development of long‐lasting biomedical coatings with versatile biological
Sara Shakibania +2 more
wiley +1 more source
Conservation of structure and activity in Plasmodium purine nucleoside phosphorylases [PDF]
BMC Structural Biology, 2009 Purine nucleoside phosphorylase (PNP) is central to purine salvage mechanisms in Plasmodium parasites, the causative agents of malaria. Most human malaria results from infection either by Plasmodium falciparum (Pf), the deadliest form of the parasite, or by the widespread Plasmodium vivax (Pv). Whereas the PNP enzyme from Pf has previously been studied
Apirat Chaikuad +2 more
openaire +4 more sources
European Journal of Heart Failure, Volume 27, Issue 7, Page 1342-1352, July 2025.Aims Although functional recovery of the failing heart with left ventricular assist device (LVAD) unloading can occur, the underpinning mechanism is unclear. We aimed to characterize the effect of myocardial biochemical effect of LVAD support in vivo and in vitro.
David M. Kaye +15 more
wiley +1 more source
A depletable pool of adenosine in area CA1 of the rat hippocampus [PDF]
, 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
FEBS Open Bio, 2015 Mycoplasmas may colonize tumor tissue in patients. The cytostatic activity of gemcitabine was dramatically decreased inMycoplasma hyorhinis‐infected tumor cell cultures compared with non‐infected tumor cell cultures.
Johan Vande Voorde +3 more
doaj +1 more source