Results 31 to 40 of about 124,162 (316)

Basis for the control of purine biosynthesis by purine ribonucleotides. [PDF]

Journal of Clinical Investigation, 1981
An animal model was used to determine the basis for the increase in purine biosynthesis that results from hepatic depletion of purine nucleotides, such as seen in patients with type I glycogen storage disease or following fructose administration. Mice were injected intravenously with glucose or fructose, 2.5 mg/g of body weight, and the animals were ...
Edward W. Holmes, Richard L. Sabina, Mitsuo Itakura, Peter W. Heald   +3 more
openaire   +3 more sources

Evolutionary Trends in RNA Base Selectivity Within the RNase A Superfamily

Frontiers in Pharmacology, 2019
There is a growing interest in the pharmaceutical industry to design novel tailored drugs for RNA targeting. The vertebrate-specific RNase A superfamily is nowadays one of the best characterized family of enzymes and comprises proteins involved in host ...
Guillem Prats-Ejarque, Lu Lu, Vivian A. Salazar, Mohammed Moussaoui, Ester Boix   +4 more
doaj   +1 more source

Synthesis a Number of Triazene Compounds Derived From Purine and Studying their Biological Activity on Pathogenic Bacteria [PDF]

مجلة جامعة الانبار للعلوم الصرفة, 2012
In this research a number of compounds were prepared by coupling dizonium salts with purine bases. The structures of the prepared compounds were identified by ultra violet ,infra red spectra and Elemental (C.H.N) analysis .The biological activity of ...
Ahmed .M. Mohamed, Hameed H.Ali, Yousif. H. Khalaf   +2 more
doaj   +1 more source

Synthesis of purines and adenines containing the hexafluoroisopropyl group

Beilstein Journal of Organic Chemistry, 2020
Several new derivatives of adenine, purine, and theophylline containing the (CF3)2CH group connected to a nitrogen atom of the imidazole ring were prepared by the reaction of 2,2,4,4-tetrakis(trifluoromethyl)-1,3-dithietane (1) with the corresponding ...
Viacheslav Petrov, Rebecca J. Dooley, Alexander A. Marchione, Elizabeth L. Diaz, Brittany S. Clem, William Marshall   +5 more
doaj   +1 more source

The Key Role of Purine Metabolism in the Folate-Dependent Phenotype of Autism Spectrum Disorders: An In Silico Analysis

Metabolites, 2020
Folate deficiency in the critical developmental period has been repeatedly associated with an increased risk of Autism spectrum disorders (ASD), but the key pathophysiological mechanism has not yet been identified. In this work, we focused on identifying
Jan Geryk, Daniel Krsička, Markéta Vlčková, Markéta Havlovicová, Milan Macek, Radka Kremlíková Pourová   +5 more
doaj   +1 more source

Efficient Synthesis of α-Branched Purine-Based Acyclic Nucleosides: Scopes and Limitations of the Method

Molecules, 2020
An efficient route to acylated acyclic nucleosides containing a branched hemiaminal ether moiety is reported via three-component alkylation of N-heterocycle (purine nucleobase) with acetal (cyclic or acyclic, variously branched) and anhydride ...
Jan Frydrych, Lenka Poštová Slavětínská, Martin Dračínský, Zlatko Janeba   +3 more
doaj   +1 more source

Integrative systems‐level analysis reveals a contextual crosstalk between hypoxia and global metabolism in human breast tumors

Molecular Oncology, EarlyView.
Breast tumor samples scored for metabolic deregulation (M1 to M3) were given a hypoxia score (HS). The highest HS occurred in patients with strongest metabolic deregulation (M3), supporting tumor aggressiveness. HS correlated with the highest number of metabolic pathways in M1. This suggests hypoxia to be an early event in metabolic deregulation.
Raefa Abou Khouzam, Salem Chouaib, Mohammad Askandar Iqbal   +2 more
wiley   +1 more source

Crosstalk between gut microbiota and tumor: tumors could cause gut dysbiosis and metabolic imbalance

Molecular Oncology, EarlyView.
In this research, we analyzed the relationship between gut microbiota and tumor. We discovered that both subcutaneous and metastatic tumors would alter the composition and metabolic function of gut microbiota. Meanwhile, fecal microbiota transplantation also indicated the anti‐tumor role of the gut microbiota, revealing the crosstalk between tumor and ...
Siyuan Zhang, Haimei Wen, Ying Chen, Jingya Ning, Di Hu, Yujiao Dong, Chenyu Yao, Bo Yuan, Shuanying Yang   +8 more
wiley   +1 more source

Oligonucleotides Featuring a Covalently Mercurated 6‐Phenylcarbazole Residue as High‐Affinity Hybridization Probes for Thiopyrimidine‐Containing Sequences

Chemistry – A European Journal, Volume 28, Issue 69, December 9, 2022., 2022
Getting back to (nucleo)base: Oligonucleotides incorporating a central 1‐ or 8‐mercuri‐6‐phenyl‐1H‐carbazole residue show great promise as high‐affinity hybridization probes, discriminating between all canonical nucleobases as well as 2‐ and 4‐thiothymines by melting temperature margins of at least 5 °C.
Tharun K. Kotammagari, Petri Tähtinen, Tuomas Lönnberg   +2 more
wiley   +1 more source

Rules governing the genetic code degeneracy/redundancy and spatial organization of the codon informative properties

Frontiers in Applied Mathematics and Statistics
The present study is devoted to describing the “logic” implicit in the standard genetic code. Bases are considered as physicochemical entities possessing two essential properties: molecular type and number of Hydrogen bonds involved (bases pairing) in ...
Melina Rapacioli, Melina Rapacioli, Ricardo Katz, Vladimir Flores, Vladimir Flores   +4 more
doaj   +1 more source