Results 41 to 50 of about 28,547,466 (259)

Ribosomal 18S rRNA base pairs with mRNA during eukaryotic translation initiation

open access: yesNature Communications, 2016
Prokaryotic translation initiation involves mRNA-ribosomal RNA base pairing interactions. Here, the authors provide evidence for a similar base pairing interactions occurring between the human h4 mRNA and helix 16 of the small subunit rRNA to position ...
Franck Martin   +8 more
doaj   +1 more source

Pre-mRNA splicing is a determinant of nucleosome organization. [PDF]

open access: yesPLoS ONE, 2013
Chromatin organization affects alternative splicing and previous studies have shown that exons have increased nucleosome occupancy compared with their flanking introns. To determine whether alternative splicing affects chromatin organization we developed
Hadas Keren-Shaul   +2 more
doaj   +1 more source

Base Pairing Promoted the Self-Organization of Genetic Coding, Catalysis, and Free-Energy Transduction. [PDF]

open access: yesLife (Basel)
How Nature discovered genetic coding is a largely ignored question, yet the answer is key to explaining the transition from biochemical building blocks to life. Other, related puzzles also fall inside the aegis enclosing the codes themselves. The peptide
Carter CW.
europepmc   +2 more sources

Synthesis and Behavior of DNA Oligomers Containing the Ambiguous Z-Nucleobase 5-Aminoimidazole-4-carboxamide

open access: yesMolecules, 2023
5-Amino-1-β-D-ribofuranosylimidazole-4-carboxamide 5′-monophosphate (ZMP) is a central intermediate in de novo purine nucleotide biosynthesis. Its nucleobase moiety, 5-aminoimidazole-4-carboxamide (Z-base), is considered an ambiguous base that can pair ...
Yuhei Nogi   +3 more
doaj   +1 more source

AFM Images of Viroid-Sized Rings That Self-Assemble from Mononucleotides through Wet–Dry Cycling: Implications for the Origin of Life

open access: yesLife, 2020
It is possible that early life relied on RNA polymers that served as ribozyme-like catalysts and for storing genetic information. The source of such polymers is uncertain, but previous investigations reported that wet–dry cycles simulating prebiotic hot ...
Tue Hassenkam   +3 more
doaj   +1 more source

Base pairing and structural insights into the 5-formylcytosine in RNA duplex

open access: yesNucleic Acids Research, 2016
5-Formylcytidine (f5C), a previously discovered natural nucleotide in the mitochondrial tRNA of many species including human, has been recently detected as the oxidative product of 5-methylcytidine (m5C) through 5-hydroxymethylcytidine (hm5C) in total ...
Rui Wang   +5 more
semanticscholar   +1 more source

Weakened N3 Hydrogen Bonding by 5-Formylcytosine and 5-Carboxylcytosine Reduces Their Base-Pairing Stability.

open access: yesACS Chemical Biology, 2016
In the active cytosine demethylation pathway, 5-methylcytosine (5mC) is oxidized sequentially to 5-hydroxymethylcytosine (5hmC), 5-formylcytosine (5fC), and 5-carboxylcytosine (5caC). Thymine DNA glycosylase (TDG) selectively excises 5fC and 5caC but not
Qing Dai   +5 more
semanticscholar   +1 more source

Partition function and base pairing probabilities of RNA heterodimers

open access: yesAlgorithms for Molecular Biology, 2006
Background RNA has been recognized as a key player in cellular regulation in recent years. In many cases, non-coding RNAs exert their function by binding to other nucleic acids, as in the case of microRNAs and snoRNAs.
Stadler Peter F   +5 more
doaj   +1 more source

Artificial DNA Base Pairing Mediated by Diverse Metal Ions

open access: yes, 2017
Metal-mediated artificial DNA base pairs, consisting of two ligand-type nucleosides and a bridging metal ion, are promising building units for constructing DNA-based supermolecules.
Yusuke Takezawa   +2 more
semanticscholar   +1 more source

How do base-pairing small RNAs evolve?

open access: yesFEMS Microbiology Reviews, 2015
The increasing numbers of characterized base-pairing small RNAs (sRNAs) and the identification of these regulators in a broad range of bacteria are allowing comparisons between species and explorations of sRNA evolution.
T. Updegrove, S. Shabalina, G. Storz
semanticscholar   +1 more source

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