Results 31 to 40 of about 292,607 (304)

Competing Endogenous RNA Regulations in Neurodegenerative Disorders: Current Challenges and Emerging Insights

open access: yesFrontiers in Molecular Neuroscience, 2018
The past decade has witnessed exciting breakthroughs that have contributed to the richness and complexity of a burgeoning modern RNA world, and one particular breakthrough—the competing endogenous RNA (ceRNA) hypothesis—has been described as the “Rosetta
Yifei Cai, Jun Wan, Jun Wan
doaj   +1 more source

Force for ancient and recent life: viral and stem-loop RNA consortia promote life. [PDF]

open access: yes, 2014
Lytic viruses were thought to kill the most numerous host (i.e., kill the winner). But persisting viruses/defectives can also protect against viruses, especially in a ubiquitous virosphere. In 1991, Yarmolinsky et al.
Villarreal, Luis P
core   +1 more source

Comparative analysis of RNA families reveals distinct repertoires for each domain of life.

open access: yesPLoS Computational Biology, 2012
The RNA world hypothesis, that RNA genomes and catalysts preceded DNA genomes and genetically-encoded protein catalysts, has been central to models for the early evolution of life on Earth.
Marc P Hoeppner   +2 more
doaj   +1 more source

The Alanine World Model for the Development of the Amino Acid Repertoire in Protein Biosynthesis [PDF]

open access: yes, 2019
A central question in the evolution of the modern translation machinery is the origin and chemical ethology of the amino acids prescribed by the genetic code.
Budisa, Nediljko, Kubyshkin, Vladimir
core   +1 more source

A Prebiotic Ribosylation of Pyrimidine Nucleobases Enabled by Metal Cations and Clay Minerals

open access: yesLife, 2021
We report a prebiotically relevant solution to the N1-ribosylation of pyrimidine nucleobases, a well-known challenge to the RNA world hypothesis. We found that the presence of metal cations and clay minerals enable the previously unachievable direct ...
Qian-Qian Chen, Ze-Run Zhao, Xiao Wang
doaj   +1 more source

A creature with a hundred waggly tails: intrinsically disordered proteins in the ribosome [PDF]

open access: yes, 2013
This article is made available for unrestricted research re-use and secondary analysis in any form or by any means with acknowledgement of the original source.
Dunker, A. Keith   +6 more
core   +2 more sources

Nonenzymatic RNA-templated Synthesis of N3′→P5′ Phosphoramidate DNA

open access: yesBio-Protocol, 2020
The RNA world hypothesis describes a scenario where early life forms relied on RNA to govern both inheritance and catalyze useful chemical reactions.
Derek O'Flaherty   +2 more
doaj   +1 more source

Origin of Life

open access: yes, 2012
The evolution of life has been a big enigma despite rapid advancements in the fields of biochemistry, astrobiology, and astrophysics in recent years.
A. Gibbons   +46 more
core   +1 more source

In vitro Evolution and Engineering for Improved Ribozyme Polymerase Production [PDF]

open access: yes, 2011
According to the "RNA World Hypothesis" the first self replicating molecule formed from the prebiotic chemicals is the ribozyme. A model compartmentalized self replicating system for ribozyme polymerases is designed and used to improve activity,
Ayaz Ali Khan   +2 more
core   +1 more source

The role and implications of mammalian cellular circadian entrainment

open access: yesFEBS Letters, EarlyView.
At their most fundamental level, mammalian circadian rhythms occur inside every individual cell. To tell the correct time, cells must align (or ‘entrain’) their circadian rhythm to the external environment. In this review, we highlight how cells entrain to the major circadian cues of light, feeding and temperature, and the implications this has for our
Priya Crosby
wiley   +1 more source

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