Results 31 to 40 of about 778,146 (302)

A Polyaddition Model for the Prebiotic Polymerization of RNA and RNA-Like Polymers

open access: yesLife, 2020
Implicit in the RNA world hypothesis is that prebiotic RNA synthesis, despite occurring in an environment without biochemical catalysts, produced the long RNA polymers which are essential to the formation of life.
Alex Spaeth, Mason Hargrave
doaj   +1 more source

The new world of RNAs [PDF]

open access: yesGenetics and Molecular Biology, 2014
One of the major developments that resulted from the human genome sequencing projects was a better understanding of the role of non-coding RNAs (ncRNAs). NcRNAs are divided into several different categories according to size and function; however, one shared feature is that they are not translated into proteins. In this review, we will discuss relevant
Dogini, Danyella Barbosa   +5 more
openaire   +6 more sources

Towards an RNA/Peptides World by the Direct RNA Template Mechanism: The Emergence of Membrane-Stabilizing Peptides in RNA-Based Protocells

open access: yesLife, 2023
How functional peptides may have arisen is a significant problem for the scenario of the RNA world. An attractive idea, the direct RNA template (DRT) hypothesis, proposes that RNA molecules can bind amino acids specifically and promote the synthesis of ...
Yu Shi, Chunwu Yu, Wentao Ma
doaj   +1 more source

An RNA World

open access: yesAnnual Review of Plant Biology, 2023
My research career started with an ambition to work out how genes are regulated in plants. I tried out various experimental systems—artichoke tissue culture in Edinburgh; soybean root nodules in Montreal; soybean hypocotyls in Athens, Georgia; and cereal aleurones in Cambridge—but eventually I discovered plant viruses.
openaire   +2 more sources

The small RNA world [PDF]

open access: yesJournal of Cell Science, 2003
Small RNAs have burst on the scene as ubiquitous, versatile repressors of gene expression in plants, animals and many fungi. These tiny RNAs (∼21-26 nt), which induce silencing through homologous sequence interactions, come in many guises: short interfering (si) RNAs ([Elbashir et al., 2001][1]),
Marjori Matzke, E. Jean Finnegan
openaire   +3 more sources

Lipid-Assisted Polymerization of Nucleotides

open access: yesLife, 2019
In addition to being one of the proponents of the “Lipid World hypothesis”, David Deamer, together with other colleagues, pioneered studies involving formation of RNA-like oligomers from their ‘non-activated’, prebiotically ...
Felix Olasagasti, Sudha Rajamani
doaj   +1 more source

The prebiotic evolutionary advantage of transferring genetic information from RNA to DNA. [PDF]

open access: yes, 2011
In the early 'RNA world' stage of life, RNA stored genetic information and catalyzed chemical reactions. However, the RNA world eventually gave rise to the DNA-RNA-protein world, and this transition included the 'genetic takeover' of information storage ...
Chen, Irene A   +4 more
core   +4 more sources

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

Methanol in the RNA world: An astrochemical perspective

open access: yesFrontiers in Astronomy and Space Sciences, 2022
The role and relevance of methanol in the origin and structure of the RNA world is discussed. Methanol is a pivotal, renewable, and regenerable source from which almost all chemical materials, simple or complex, can be accessed.
Thomas Mathew   +2 more
doaj   +1 more source

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