Results 61 to 70 of about 149,629 (313)

Prebiotic Route to Thymine from Formamide—A Combined Experimental–Theoretical Study

Molecules, 2021
Synthesis of RNA nucleobases from formamide is one of the recurring topics of prebiotic chemistry research. Earlier reports suggest that thymine, the substitute for uracil in DNA, may also be synthesized from formamide in the presence of catalysts ...
Lukáš Petera, Klaudia Mrazikova, Lukas Nejdl, Kristyna Zemankova, Marketa Vaculovicova, Adam Pastorek, Svatopluk Civis, Petr Kubelik, Alan Heays, Giuseppe Cassone, Jiri Sponer, Martin Ferus, Judit Sponer   +12 more
doaj   +1 more source

Density Functional Theory for the Photoionization Dynamics of Uracil

, 2007
Photoionization dynamics of the RNA base Uracil is studied in the framework of Density Functional Theory (DFT). The photoionization calculations take advantage of a newly developed parallel version of a multicentric approach to the calculation of the ...
Altmann S. L., D. Toffoli, F. A. Gianturco, Massey H. S. W., P. Decleva, Parr R. G., R. R. Lucchese, Slater J. C., Taylor J. R.   +8 more
core   +1 more source

Quantum Computational, Spectroscopic (FT-IR, FT-Raman, NMR, and UV–Vis) Hirshfeld Surface and Molecular Docking-Dynamics Studies on 5-Hydroxymethyluracil (Monomer and Trimer)

Molecules, 2023
For many decades, uracil has been an antineoplastic agent used in combination with tegafur to treat various human cancers, including breast, prostate, and liver cancer.
Mohit Kumar, Gautam Jaiswar, Mohd. Afzal, Mohd. Muddassir, Abdullah Alarifi, Aysha Fatima, Nazia Siddiqui, Rashid Ayub, Naaser A. Y. Abduh, Waseem Sharaf Saeed, Saleem Javed   +10 more
doaj   +1 more source

Solvation Structure of Uracil in Ionic Liquids [PDF]

, 2016
The local solvation environment of uracil dissolved in the ionic liquid 1-ethyl-3-methylimidazolium acetate has been studied using neutron diffraction techniques. At solvent:solute ratios of 3:1 and 2:1 ionic liquid:uracil, little perturbation of the ion-
Araújo, Araújo, Armand, Bara, Bowron, Canongia Lopes, Canongia Lopes, Canongia Lopes, Chang, Cheng, Cruz, El Seoud, Estager, Fukaya, Hallett, Hardacre, Hardacre, Holbrey, Jorgensen, Kiefer, Kumar, Kurinovich, Kölle, Lesch, Liu, Liu, Lui, Mao, Norman, Pinkert, Plaquevent, Plechkova, Rabideau, Reichert, Ries, Rinaldi, Schmidt, Soper, Soper, Soper, Stewart, Swatloski, Tang, Tateishi-Karimata, Uzagare, Vanoye, Wang, Wang, Wu, Xie, Youngs, Youngs, Youngs, Zhang, Zhao   +54 more
core   +1 more source

dUTPase is essential in zebrafish development and possesses several single‐nucleotide variants with pronounced structural and functional consequences

FEBS Open Bio, EarlyView.
dUTPases are involved in balancing the appropriate nucleotide pools. We showed that dUTPase is essential for normal development in zebrafish. The different zebrafish genomes contain several single‐nucleotide variations (SNPs) of the dut gene. One of the dUTPase variants displayed drastically lower protein stability and catalytic efficiency as compared ...
Viktória Perey‐Simon, Angéla Békesi, Latifa Kazzazy, Jázmin Mihály, Máté Varga, Beáta G. Vértessy, Kinga Nyíri   +6 more
wiley   +1 more source

Purine and pyrimidine bases as growth substances for lactic acid bacteria [PDF]

, 1941
In 1936 Richardson (1) showed that uracil was essential for the anaerobic growth of Staphylococcus aureus, but not for aerobic growth of the same organism.
Mitchell, Herschel K., Snell, Esmond E.
core  

Spores of Clostridium engineered for clinical efficacy and safety cause regression and cure of tumors in vivo. [PDF]

, 2014
Spores of some species of the strictly anaerobic bacteria Clostridium naturally target and partially lyse the hypoxic cores of tumors, which tend to be refractory to conventional therapies. The anti-tumor effect can be augmented by engineering strains to
Dubois, L, Ehsaan, M, Heap, JT, Knox, R, Kubiak, AM, Kuehne, SA, Lambin, P, Mellaert, LV, Minton, NP, Paesmans, K, Theys, J   +10 more
core   +4 more sources

Expanding Chemical Space of Nucleic Acid Nanoparticles for Tunable Antiviral‐Like Immunomodulatory Responses and Potent Adjuvant Activity

Advanced Functional Materials, EarlyView.
We introduce a nucleic acid nanoparticle (NANP) platform designed to be rrecognized by the human innate immune system in a regulated manner. By changing chemical composition while maintaining constant architectural parameters, we identify key determinants of immunorecognition enabling the rational design of NANPs with tunable immune activation profiles
Martin Panigaj, Hannah S. Newton, Jian Wang, Laxmi Pandey, Yelixza I. Avilla, Phong Nguyen, Morgan Chandler, Justin Halman, Yasmine Radwan, Stephanie Smith, Elijah Edmondson, Simone Difilippantonio, Chelsea Sanders, Bao Tran, Yongmei Zhao, Shaojun Xie, Edward Cedrone, Barry W. Neun, Meni Wanunu, Nikolay V. Dokholyan, Marina A. Dobrovolskaia, Kirill A. Afonin   +21 more
wiley   +1 more source

Differential Description of Multiple Ionization of Uracil by 3.5 MeV/u C⁶⁺ Impact

Atoms, 2023
In this work, a theoretical analysis of the impact of the multiple ionization of uracil by 3.5 MeV/u C6+ is developed in the framework of a classical trajectory Monte Carlo method, as recently introduced for multi-electronic targets.
N. D. Cariatore, N. Bachi, S. Otranto
doaj   +1 more source

Mechanisms of base selection by the E.coli mispaired uracil glycosylase [PDF]

, 2008
The repair of the multitude of single-base lesions formed daily in the cells of all living organisms is accomplished primarily by the base-excision repair (BER) pathway that initiates repair through a series of lesion-selective glycosylases.
Darwanto, Agus, Goddard, William, III, Liu, Pingfang, Pascal, Tod, Sowers, Lawrence C., Theruvathu, Jacob A., Valinluck Lao, Victoria   +6 more
core   +2 more sources