Results 51 to 60 of about 6,071,343 (411)

DNA Composites and Applications in Bioanalysis

open access: yesAdvanced Sensor Research, 2023
DNA combined with other functional nanomaterials plays crucial roles in biomedical areas, including bio‐detection, bioimaging, as well as disease diagnosis and treatment.
Zheng Fang, Min Li, Xiaolei Zuo
doaj   +1 more source

Origin of Information Encoding in Nucleic Acids through a Dissipation-Replication Relation [PDF]

open access: yesEntropy 2020, 22(9), 940, 2018
Ultraviolet light incident on organic material can initiate its spontaneous dissipative structuring into chromophores which can then catalyze their own replication. This may have been the case for one of the most ancient of all chromophores dissipating the Archean UVC photon flux, the nucleic acids.
arxiv   +1 more source

Locked nucleic acid: tighter is different [PDF]

open access: yes, 2013
This viewpoint briefly reviews the impact of Locked Nucleic Acid (LNA) oligonucleotides, first described in a ChemComm paper in 1998. A number of unique applications in oligonucleotide biotechnology have been made possible by the high binding affinity ...
Watts, Jonathan
core   +1 more source

Absolute quantification of real-time PCR data with stage signal difference analysis [PDF]

open access: yesarXiv, 2021
Real-time PCR, or Real-time Quantitative PCR (qPCR) is an effective approach to quantify nucleic acid samples. Given the complicated reaction system along with thermal cycles, there has been long-term confusion on accurately calculating the initial nucleic acid amounts from the fluorescence signals.
arxiv  

Nucleic acid chemistry [PDF]

open access: yesBeilstein Journal of Organic Chemistry, 2014
Since the discovery of the structure of the DNA double helix in 1953 by Watson and Crick [1], we know that DNA is of critical importance, carrying the genetic information for all living organisms. Only a few years later appeared the first reports on the chemical synthesis of oligonucleotides with a natural 3'-5' phosphodiester linker by Michelsen and ...
openaire   +5 more sources

Toxicity Evaluation of Potassium Sorbate In Vivo with Drosophila Melanogaster

open access: yesInsects
Potassium sorbate (PS) is a preservative widely used in the food, pharmaceutical, and cosmetics industries. Improper and careless use of PS can lead to various health issues and potential environmental problems.
Xubo Zhang   +6 more
doaj   +1 more source

Antiviral and Immunoenhancing Properties of 7-Thia-8-Oxoguanosine and Related Guanosine Analogues

open access: yesCanadian Journal of Infectious Diseases, 1992
7-thia-8-oxoguanosine (TOGuo) is the first reported structure of a family of modified guanosine analogues exhibiting antiviral activity in rodent models.
Donald F Smee   +8 more
doaj   +1 more source

Conformational switches control early maturation of the eukaryotic small ribosomal subunit

open access: yeseLife, 2019
Eukaryotic ribosome biogenesis is initiated with the transcription of pre-ribosomal RNA at the 5’ external transcribed spacer, which directs the early association of assembly factors but is absent from the mature ribosome.
Mirjam Hunziker   +5 more
doaj   +1 more source

Rigid Base Biasing in Molecular Dynamics enables enhanced sampling of DNA conformations [PDF]

open access: yesarXiv, 2022
All-atom simulations have become increasingly popular to study conformational and dynamical properties of nucleic acids as they are accurate and provide high spatial and time resolutions. This high resolution however comes at a heavy computational cost and within the time scales of simulations nucleic acids weakly fluctuate around their ideal structure
arxiv  

Velocity and processivity of helicase unwinding of double-stranded nucleic acids [PDF]

open access: yesJournal of Physics: Condensed Matter 17 (2005) S3851--S3869, 2005
Helicases are molecular motors which unwind double-stranded nucleic acids (dsNA) in cells. Many helicases move with directional bias on single-stranded (ss) nucleic acids, and couple their directional translocation to strand separation. A model of the coupling between translocation and unwinding uses an interaction potential to represent passive and ...
arxiv   +1 more source

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