Results 81 to 90 of about 124,338 (379)

A Dual‐Emissive DNA‐Templated Silver Nanocluster with Near‐Infrared I and II Emission

Advanced Optical Materials, Volume 13, Issue 8, March 13, 2025.
This study presents a dual‐emissive DNA‐stabilized silver nanocluster with a nanosecond‐lived NIR‐I emission band and a microsecond‐lived NIR‐II emission band. Mass spectrometry establishes that the nanocluster has molecular formula (DNA)2[Ag17]11+. DNA sequence variations reveal critical nucleobases for stabilization, and modifications at the DNA 5 ...
Anna Gonzàlez‐Rosell, Vanessa Rück, Mikkel B. Liisberg, Cecilia Cerretani, Villads R. M. Nielsen, Tom Vosch, Stacy M. Copp   +6 more
wiley   +1 more source

Mechanisms of base selection by human single-stranded selective monofunctional uracil-DNA glycosylase [PDF]

, 2009
hSMUG1 (human single-stranded selective monofunctional uracil-DNA glyscosylase) is one of three glycosylases encoded within a small region of human chromosome 12. Those three glycosylases, UNG (uracil-DNA glycosylase), TDG (thymine-DNA glyscosylase), and
Agus Darwanto, Akbari, Alcantara, Barrett, Bennett, Bethod, Boorstein, Bryantsev, Cerny, Clough, Cui, Cybulski, Daniel K. Rogstad, Di Noia, Di Noia, Dunning, Fujimoto, Gait, Guerniou, Hansch, Haushalter, Hobza, Jacob A. Theruvathu, James L. Sowers, Jang, Kavli, Kelly, Kendall, Krokan, Krokan, La Francois, Lawrence C. Sowers, Liu, Marten, Masaoka, Matsubara, Matsubara, Matsudaira, Mendes, Morgan, Neddermann, Nilsen, Nilsen, Pearl, Perezjorda, Privat, Rao, Rogstad, SantaLucia, Sibghat-Ullah, Slupphaug, Sousa, Sowers, Sowers, Sugiyama, Tannor, Tod Pascal, Waters, Wibley, William Goddard, Zhao, Zhao, Zhao, Zielenkiewicz   +63 more
core   +3 more sources

Beyond Structure: Methylation Fine‐Tunes Stability and Folding Kinetics of bcl2Mid G‐Quadruplex

Angewandte Chemie, EarlyView.
The introduction of a single 5‐methylcytosine into a G‐rich sequence originating from the B‐cell lymphoma 2 (BCL2) gene promoter affects both the folding kinetics and thermodynamics of the two G4 structures and thus plays a crucial role in regulating G4 folding pathways, which has significant implications for the control of gene expression.
Nataša Medved, Mirko Cevec, Uroš Javornik, Jurij Lah, San Hadži, Janez Plavec   +5 more
wiley   +2 more sources

Thymine Incorporation and Metabolism by Various Classes of Thymine-less Bacteria [PDF]

Journal of General Microbiology, 1965
SUMMARY: Escherichia coli strain 15T- yielded 109 organisms from 1 μg. thymine and growth was continuous, not diphasic. Aminopterin-selected thymine-less bacteria, on the other hand, required 20-25 μg. thymine/ml. to sustain growth, although thymine incorporation was the same as for strain 15T-, approximately 10-9 μg./bacterium.
openaire   +3 more sources

Incorporation of Thymine into Prototrophic and Thymine-dependent Mutants of Bacillus anthracis [PDF]

Journal of General Microbiology, 1969
SUMMARY: Mutants of Bacillus anthracis which were prototrophic in a defined medium below 32° required either thymidine (mutant thy) or low concentration of thymine (mutant thytlr) for growth at 37°. No thymidylate synthetase was produced by these mutants at 37°. Normal enzyme activity was found in bacteria grown at 25°.
Ivánovics, György, Dobozy, Attila, Pál, L   +2 more
openaire   +4 more sources

Vibrational Investigation of Nucleobases by Means of Divide and Conquer Semiclassical Dynamics [PDF]

Journal of Chemical Physics 150, 224107 (2019), 2019
In this work we report a computational study of the vibrational features of four different nucleobases employing the divide-and-conquer semiclassical initial value representation molecular dynamics method. Calculations are performed on uracil, cytosine, thymine, and adenine.
arxiv   +1 more source

Self‐Assembled Physical Unclonable Function Labels Based on Plasmonic Coupling

Advanced Optical Materials, EarlyView.
This article introduces advanced anti‐counterfeit labels crafted through DNA‐guided self‐assembly of plasmonic nanoparticles. Utilizing nanosphere lithography for dense and precise nanoparticle placement, these labels feature unique, unclonable optical signatures achieved through plasmonic coupling, detectable by an economical 3D‐printed dark field ...
Mihir Dass, Lena Raab, Christoph Pauer, Christoph Sikeler, Larissa Heinze, Joe Tavacoli, Irina V. Martynenko, Ulrich Rührmair, Gregor Posnjak, Tim Liedl   +9 more
wiley   +1 more source

Excited-state relaxation of hydrated thymine and thymidine measured by liquid-jet photoelectron spectroscopy: experiment and simulation.

Journal of the American Chemical Society, 2015
Time-resolved photoelectron spectroscopy is performed on thymine and thymidine in aqueous solution to study the excited-state relaxation dynamics of these molecules.
Franziska Buchner, A. Nakayama, Shohei Yamazaki, H. Ritze, A. Lübcke   +4 more
semanticscholar   +1 more source

Small RNA Toxin‐Assisted Evolution of GC‐Preferred ErCas12a for Enhanced Genome Targeting Range

Advanced Science, EarlyView.
ErCas12a is engineered to target GC‐rich PAMs using a small RNA toxin‐aided positive screening system. The resulting variant, enErCas12a, exhibits an expanded PAM profile and facilitates efficient gene editing in both bacterial and mammalian cells, while preserving high targeting specificity for both canonical and non‐canonical PAM targets.
Zehua Chen, Junyuan Xue, Ziying Wang, Jinyuan Sun, Yinglu Cui, Tong Zhu, Huaiyi Yang, Ming Li, Bian Wu   +8 more
wiley   +1 more source

Non-Empirically Tuned Range-Separated DFT Accurately Predicts Both Fundamental and Excitation Gaps in DNA and RNA Nucleobases [PDF]

, 2012
Using a non-empirically tuned range-separated DFT approach, we study both the quasiparticle properties (HOMO-LUMO fundamental gaps) and excitation energies of DNA and RNA nucleobases (adenine, thymine, cytosine, guanine, and uracil).
Foster, Michael E., Wong, Bryan M.
core   +2 more sources