Results 41 to 50 of about 77,275 (204)

Glutamine Phosphoribosylpyrophosphate Amidotransferase-independent Phosphoribosyl Amine Synthesis from Ribose 5-Phosphate and Glutamine or Asparagine [PDF]

, 2007
Phosphoribosylamine (PRA) is the first intermediate in the common pathway to purines and thiamine and is generated in bacteria by glutamine phosphoribosylpyrophosphate (PRPP) amidotransferase (EC 2.4.2.14) from PRPP and glutamine.
Downs, Diana M., Koenigsknecht, Mark J., Ramos, Itzel   +2 more
core   +2 more sources

Teores de proteína bruta para bovinos alimentados com feno de capim-tifton 85: parâmetros ruminais, eficiência de síntese microbiana e degradabilidade in situ Effects of crude protein levels on microbial efficiency and in situ degradability in steers fed Tifton 85 bermudagrass hay supplemented with different protein sources

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, Telma Teresinha Berchielli, Ricardo Andrade Reis, Alexandre Vaz Pires, Kátia Junko Sato, José Mauro Valente Paes, André Dias Lopes   +6 more
doaj   +1 more source

Hyperuricemia: Features of the Diet

Рациональная фармакотерапия в кардиологии, 2022
The association of hyperuricemia (HU) with cardiovascular disease (CVD), diabetes, metabolic syndrome, and kidney disease has been demonstrated in numerous studies.
O. B. Shvabskaia, O. V. Izmailova, N. S. Karamnova, O. M. Drapkina   +3 more
doaj   +1 more source

Ischemic preconditioning attenuates portal venous plasma concentrations of purines following warm liver ischemia in man [PDF]

, 2005
Background/Aims: Degradation of adenine nucleotides to adenosine has been suggested to play a critical role in ischemic preconditioning (IPC). Thus, we questioned in patients undergoing partial hepatectomy whether (i) IPC will increase plasma purine ...
Chouker, A., Dugas, Martin, Heizmann, O., Martignoni, A., Messmer, K., Peter, K., Rau, H. G., Schauer, R. J., Thiel, M., Volk, A.   +9 more
core   +1 more source

Synthesis of Pyridinium Moiety Containing Triazolyl Purines

Molbank
Pyridinium salts of 2-piperidinyl-6-triazolylpurine derivatives were obtained by the introduction of pyridinium moieties into the propane-1,3-diol fragment at the N(9) position of purine to enhance the solubility of 2-amino-6-triazolylpurine derivatives ...
Aleksejs Burcevs, Māris Turks, Irina Novosjolova   +2 more
doaj   +1 more source

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, Evgeny N. Ulomsky, Victor V. Fedotov, Semen V. Aminov, Daniil N. Lyapustin, Evgeny B. Gorbunov, Vladislav A. Ishimnikov, Pavel A. Slepukhin, Vladimir L. Rusinov   +8 more
doaj   +1 more source

Role of HIV RNA structure in recombination and speciation: romping in purine A, keeps HTLV away

, 2013
Extreme enrichment of the human immunodeficiency virus (HIV-1) RNA genome for the purine A parallels the mild purine-loading of the RNAs of most organisms.
Forsdyke, Donald R.
core   +1 more source

ATP as a presynaptic modulator [PDF]

, 2000
© 2000 Elsevier Science Inc.There is considerable evidence that ATP acts as a fast transmitter or co-transmitter in autonomic and sensory nerves mostly through activation of ionotropic P2X receptors but also through metabotropic P2Y receptors. By analogy,
Cunha, Rodrigo A., Ribeiro, J. A.
core   +1 more source

Synthesis of Purine-1,4,7,10-Tetraazacyclododecane Conjugate and Its Complexation Modes with Copper(II)

Molecules
Purine-1,4,7,10-tetraazacyclododecane (cyclen) conjugate was designed to study its Cu2+ ions complexation capability. Several synthetic approaches were tested to achieve the target compound.
Aleksejs Burcevs, Gediminas Jonusauskas, Irina Novosjolova, Māris Turks   +3 more
doaj   +1 more source

Purine Acquisition and Synthesis by Human Fungal Pathogens

Microorganisms, 2017
While members of the Kingdom Fungi are found across many of the world’s most hostile environments, only a limited number of species can thrive within the human host. The causative agents of the most common invasive fungal infections are Candida albicans,
Jessica L. Chitty, James A. Fraser
doaj   +1 more source