Results 1 to 10 of about 51,787 (167)

Photoinduced Formation Mechanism of the Thymine–Thymine (6–4) Adduct

Journal of Physical Chemistry B, 2013
The photoinduced mechanism leading to the formation of the thymine-thymine (6-4) photolesion has been studied by using the CASPT2//CASSCF approach over a dinucleotide model in vacuo. Following light absorption, localization of the excitation on a single thymine leads to fast singlet-triplet crossing that populates the triplet (3)(nπ*) state of thymine.
Angelo Giussani, Luis Serrano-Andrés, Manuela Merchan   +2 more
exaly   +4 more sources

Thy-AuNP-AgNP Hybrid Systems for Colorimetric Determination of Copper (II) Ions Using UV-Vis Spectroscopy and Smartphone-Based Detection

Nanomaterials, 2022
A colorimetric probe based on a hybrid sensing system of gold nanoparticles (AuNPs), silver nanoparticles (AgNPs), and thymine (Thy) was developed for easy and rapid detection of copper (II) ions (Cu2+) in solution. The underlying principle of this probe
Thitiporn Thongkam, Amara Apilux, Thitaporn Tusai, Tewarak Parnklang, Sumana Kladsomboon   +4 more
doaj   +1 more source

Ru-Controlled Thymine Tautomerization Frozen by a k¹(O)-, k²(N,O)-Metallacycle: An Experimental and Theoretical Approach

Molecules, 2023
The reaction of mer-(Ru(H)2(CO)(PPh3)3) (1) with one equivalent of thymine acetic acid (THAcH) unexpectedly produces the macrocyclic dimer k1(O), k2(N,O)-(Ru(CO)(PPh3)2THAc)2 (4) and, concomitantly, the doubly coordinated species k1(O), k2(O,O)-(Ru(CO ...
Silvia Bordoni, Riccardo Tarroni, Magda Monari, Stefano Cerini, Fabio Battaglia, Gabriele Micheletti, Carla Boga, Giacomo Drius   +7 more
doaj   +1 more source

Thymine Sensitizes Gram-Negative Pathogens to Antibiotic Killing

Frontiers in Microbiology, 2021
Diminished antibiotic susceptibility of bacterial pathogens is an increasingly serious threat to human and animal health. Alternative strategies are required to combat antibiotic refractory bacteria.
Yuan Liu, Yuan Liu, Yuan Liu, Yuan Liu, Kangni Yang, Yuqian Jia, Jingru Shi, Ziwen Tong, Zhiqiang Wang, Zhiqiang Wang, Zhiqiang Wang   +10 more
doaj   +1 more source

Sensitive Silver-Enhanced Microplate Apta-Enzyme Assay of Sb³⁺ Ions in Drinking and Natural Waters

Molecules, 2023
The toxic effects of antimony pose risks to human health. Therefore, simple analytical techniques for its widescale monitoring in water sources are in demand. In this study, a sensitive microplate apta-enzyme assay for Sb3+ detection was developed.
Nadezhda S. Komova, Kseniya V. Serebrennikova, Anna N. Berlina, Anatoly V. Zherdev, Boris B. Dzantiev   +4 more
doaj   +1 more source

Density Functional Method Study on the Cooperativity of Intermolecular H-bonding and π-π⁺ Stacking Interactions in Thymine-[C_nmim]Br (n = 2, 4, 6, 8, 10) Microhydrates

Molecules, 2022
The exploration of the ionic liquids’ mechanism of action on nucleobase’s structure and properties is still limited. In this work, the binding model of the 1-alkyl-3-methylimidazolium bromide ([Cnmim]Br, n = 2, 4, 6, 8, 10) ionic liquids to the thymine ...
Yanni Wang, Chaowu Dai, Wei Huang, Tingting Ni, Jianping Cao, Jiangmei Pang, Huining Wei, Chaojie Wang   +7 more
doaj   +1 more source

Mutagenicity of a unique thymine-thymine dimer or thymine-thymine pyrimidine pyrimidone (6-4) photoproduct in mammalian cells [PDF]

Nucleic Acids Research, 1996
The mutagenic properties of UV-induced photoproducts, both the cis-syn thymine-thymine dimer (TT) and the thymine-thymine pyrimidine pyrimidone (6-4) photoproduct [T(6-4)T] were studied in mammalian cells using shuttle vectors. A shuttle vector able to replicate in both mammalian cells and bacteria was produced in its single-stranded DNA form. A unique
A, Gentil, F, Le Page, A, Margot, C W, Lawrence, A, Borden, A, Sarasin   +5 more
openaire   +2 more sources

Thymine-Modified Nanocarrier for Doxorubicin Delivery in Glioblastoma Cells

Molecules, 2023
Brain tumor glioblastoma is one of the worst types of cancer. The blood–brain barrier prevents drugs from reaching brain cells and shields glioblastoma from treatment.
Albina Y. Ziganshina, Elina E. Mansurova, Alexandra D. Voloshina, Anna P. Lyubina, Syumbelya K. Amerhanova, Marina M. Shulaeva, Irek R. Nizameev, Marsil K. Kadirov, Leysan R. Bakhtiozina, Vyacheslav E. Semenov, Igor S. Antipin   +10 more
doaj   +1 more source

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

Adenine and Thymine Effect on Quartz Dissolution at Different Artificial Seawaters

Orbital: The Electronic Journal of Chemistry, 2018
According to Bernal (1951) minerals may have played important roles in the origin of life such as: protect biomolecules against degradation by UV radiation or hydrolysis, pre-concentrate biomolecules from prebiotic seas and formation of polymers.
Dimas Augusto Morozin Zaia, Rodrigo de Carvalho Pereira, Rafael Block Samulewski   +2 more
doaj   +3 more sources