Results 11 to 20 of about 28,518 (238)

Functionalized Solid Electrodes for Electrochemical Biosensing of Purine Nucleobases and Their Analogues: A Review

Sensors, 2015
Interest in electrochemical analysis of purine nucleobases and few other important purine derivatives has been growing rapidly. Over the period of the past decade, the design of electrochemical biosensors has been focused on achieving high sensitivity ...
Vimal Kumar Sharma, Frantisek Jelen, Libuse Trnkova   +2 more
doaj   +1 more source

Níveis de uréia na ração de novilhos de quatro grupos genéticos: estimativa da produção de proteína microbiana por meio dos derivados de purinas na urina utilizando duas metodologias de coleta Urea levels in diet for steers of four genetic groups: microbial protein production by the urinary purine derivatives, using two collection methodologies

Revista Brasileira de Zootecnia, 2008
Objetivou-se avaliar o efeito de quatro níveis de uréia na ração: 0; 0,65; 1,3 e 1,95% na matéria seca (MS), sobre a estimativa da produção de proteína microbiana por meio dos derivados de purinas na urina, em duas metodologias de coleta em novilhos de ...
Luciana Navajas Rennó, Sebastião de Campos Valadares Filho, Rilene Ferreira Diniz Valadares, Mário Fonseca Paulino, Francisco Palma Rennó, Polyana Albino Silva   +5 more
doaj   +1 more source

Nucleophilic Arylation of Halopurines Facilitated by Brønsted Acid in Fluoroalcohol

Molecules, 2019
Various aryl-substituted purine derivatives were synthesized through the direct arylation of halopurines with aromatic compounds, facilitated by the combination of triflic acid and fluoroalcohol.
Naoko Takenaga, Toshitaka Shoji, Takayuki Menjo, Akiko Hirai, Shohei Ueda, Kotaro Kikushima, Tomonori Hanasaki, Toshifumi Dohi   +7 more
doaj   +1 more source

Investigation of 8-Aza-7-Deaza Purine Nucleoside Derivatives

Molecules, 2019
Glycosylation of 6-amino-4-methoxy-1H-pyrazolo[3,4-d]pyrimidine and its iodo- and bromo- analogues with the protected ribofuranose and 2′-deoxyribofuranose under different conditions resulted in the synthesis of N9- and N8-glycosylated purine ...
Hang Ren, Haoyun An, Jingchao Tao
doaj   +1 more source

Search of protein kinase CK2 inhibitors based on purine-2,6-diones derivatives [PDF]

The Ukrainian Biochemical Journal, 2017
This work is aimed to the search of protein kinase CK2 inhibitors among the purine-2,6-dione derivatives by molecular docking and biochemical tests. It was found that the most active compound 8-[2-[(3-methoxyphenyl)methylidene]hydrazine-1-yl]-3-methyl-7-(
M. V. Protopopov, O. V. Ostrynska, D. H. Ivanchenko, S. A. Starosyla, V. G. Bdzhola, M. I. Romanenko, S. M. Yarmoluk   +6 more
doaj   +1 more source

Effect of adenine on the synthesis of purine derivatives in wheat seedlings

Acta Societatis Botanicorum Poloniae, 2015
The effect of adenine and other purine derivatives on the "de novo" purine synthesis was investigated in young wheat schoots. Adenine, adenosine and AMP inhibited strongly this biosynthesis, whereas hypoxanthine had no effect.
Hanna Rybacka
doaj   +1 more source

The Utilization of Coconut Coir as Supplementary Feed for Beef Cattle Production

Caraka Tani: Journal of Sustainable Agriculture, 2022
High feed price is a major problem in the production of beef cattle. Therefore, this study aims to determine coconut coir's technical and economic potential for beef cattle feed.
Limbang Kustiawan Nuswantara, Sunarso Sunarso, Mukh Arifin, Agus Setiadi   +3 more
doaj   +1 more source

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

Molecules, 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, Andrzej Rykowski, Mariusz Mojzych   +2 more
doaj   +1 more source

Substituted Purines as High-Affinity Histamine H₃ Receptor Ligands

Pharmaceuticals, 2022
Continuing with our program to obtain new histamine H3 receptor (H3R) ligands, in this work we present the synthesis, H3R affinity and in silico studies of a series of eight new synthetically accessible purine derivatives.
Christian Espinosa-Bustos, Luisa Leitzbach, Tito Añazco, María J. Silva, Andrea del Campo, Alejandro Castro-Alvarez, Holger Stark, Cristian O. Salas   +7 more
doaj   +1 more source

Ubiquitous purine sensor modulates diverse signal transduction pathways in bacteria

Nature Communications
Purines and their derivatives control intracellular energy homeostasis and nucleotide synthesis, and act as signaling molecules. Here, we combine structural and sequence information to define a purine-binding motif that is present in sensor domains of ...
Elizabet Monteagudo-Cascales, Vadim M. Gumerov, Matilde Fernández, Miguel A. Matilla, José A. Gavira, Igor B. Zhulin, Tino Krell   +6 more
doaj   +1 more source