Results 51 to 60 of about 53,051 (335)
Reconstructive Methodology in the Synthesis of 2-Aminopurine
Molecules, 2023 A fundamentally new synthetic approach to the synthesis of 2-aminopurine has been developed. It consists in the combination of the creation of a condensed polyazotic heterocyclic tetrazolopyrimidine structure, its transformation into triaminopyrimidine ...
Artyom O. Neymash +8 more
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Temperature and Tautomeric Effects in High-Resolution Oxygen 1s X-ray Photoelectron Spectroscopy of Purines and Pyrimidines [PDF]
J. Chem. Phys. 161, 104303 (2024)Purines and pyrimidines, crucial building blocks in biological systems, have attracted significant interest across molecular physics, biochemistry, pharmacology, and chemistry. Extensive spectroscopies have been employed for characterization, while the temperature and potential tautomeric effects can complicate the interpretation of underlying physics ...
arxiv +1 more source
Advanced Materials Interfaces, EarlyView.The formation of stable clusters of gold nanoparticles with oligonucleotides at different solution conditions is explored. DNA base homogeneity and strand directionality influence the binding with gold nanoparticles leading to interesting clustering behavior that can be relevant for SERS applications.
Shaila Thakur +3 more
wiley +1 more source
The changes in purine metabolism in gastric cancer
Gastroenterologìa, 2019 Background. Gastric cancer (GC) is considered an urgent problem of oncology, due to its high incidence and mortality, diagnosis at a later stage of the disease progression, anatomical and topographical features of the organ affected by the tumor and the
O.V. Syniachenko +3 more
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Metals, 2022 Metals stability and corrosion resistance are very important factors that influence the possibility of their applications. In order to study and foresee the behavior of metals during various applications in all kinds of conditions and media, numerous ...
Marija B. Petrović Mihajlović +4 more
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Extraterrestrial nucleobases in the Murchison meteorite [PDF]
Earth and Planetary Science Letters 270, 130-136. 15 June 2008, 2008 Carbon-rich meteorites, carbonaceous chondrites, contain many biologically relevant organic molecules and delivered prebiotic material to the young Earth. We present compound-specific carbon isotope data indicating that measured purine and pyrimidine compounds are indigenous components of the Murchison meteorite.
arxiv +1 more source
The Influence of Dietary Purines and Pyrimidines on Purine and Pyrimidine Biosynthesis in Man
Transfusion Medicine and Hemotherapy, 1977 Allopurinol-induced orotaciduria is reduced by dietary ribonucleic acid (RNA), RNA hydrolysate and different nucleotides. These findings are compatible with feedback regulation of pyrimidine biosynthesis by dietary nucleotides. Serum uric acid and urinary uric acid excretion on a purine-free isoenergetic diet reach a minimum after about 10 days and ...
W Gröbner, N Zöllner
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Adjusting Cell‐Surface Interactions Through a Covalent Immobilization of Biomolecules
Advanced Materials Interfaces, EarlyView.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
Revista Brasileira de Zootecnia, 2007 Avaliou-se o efeito da deficiência de PB na dieta sobre a eficiência de síntese microbiana e a degradabilidade in situ da MS e FDN em novilhos mestiços.
Edilane Aparecida da Silva +6 more
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Journal of Biological Chemistry, 1912 "Reprinted from the Journal of biological chemistry, vol. XI, no. 3, 1912." ; "From the Rudolph Spreckels physiological laboratory of the University of California." ; Cover-title. ; Mode of access: Internet.
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