Results 41 to 50 of about 2,831,810 (265)

The influence of galactic cosmic rays on ion-neutral hydrocarbon chemistry in the upper atmospheres of free-floating exoplanets [PDF]

open access: yes, 2014
The authors highlight financial support of the European Community under the FP7 by an ERC starting grant.Cosmic rays may be linked to the formation of volatiles necessary for prebiotic chemistry.
P. B. Rimmer   +5 more
core   +1 more source

Thioesters Provide a Robust Path to Prebiotic Peptides [PDF]

open access: yes, 2021
The condensation of building blocks into oligomers and polymers was an early and important stage in the origins of life. High activation energies, unfavorable thermodynamics and side reactions are bottlenecks for abiotic formation of peptides. Thioesters
Luke J., Leman   +6 more
core   +2 more sources

Organic compounds in fluid inclusions of Archean quartz-Analogues of prebiotic chemistry on early Earth. [PDF]

open access: yesPLoS ONE, 2017
The origin of life is still an unsolved mystery in science. Hypothetically, prebiotic chemistry and the formation of protocells may have evolved in the hydrothermal environment of tectonic fault zones in the upper continental crust, an environment where ...
Ulrich Schreiber   +9 more
doaj   +1 more source

Prebiotic Chemistry that Could Not Not Have Happened. [PDF]

open access: yesLife (Basel), 2019
We present a direct route by which RNA might have emerged in the Hadean from a fayalite–magnetite mantle, volcanic SO2 gas, and well-accepted processes that must have created substantial amounts of HCHO and catalytic amounts of glycolaldehyde in the Hadean atmosphere.
Benner SA, Kim HJ, Biondi E.
europepmc   +4 more sources

Do-Nothing Prebiotic Chemistry: Chemical Kinetics as a Window into Prebiotic Plausibility. [PDF]

open access: yesAcc Chem Res
Origin of Life research is a fast growing field of study with each year bringing new breakthroughs. Recent discoveries include novel syntheses of life's building blocks, mechanisms of activation and interaction between molecules, and newly identified environments that provide promising conditions for these syntheses and mechanisms.
White SB, Rimmer PB.
europepmc   +5 more sources

Ring-Opening of Glycerol Cyclic Phosphates Leads to a Diverse Array of Potentially Prebiotic Phospholipids [PDF]

open access: yes, 2023
Phospholipids are the primary constituents of cell membranes across all domains of life, but how and when phospholipids appeared on early Earth remains unknown.
Maaia, Aleksandrova   +3 more
core   +1 more source

Scum of the Earth: A Hypothesis for Prebiotic Multi-Compartmentalised Environments

open access: yesLife, 2021
Compartmentalisation by bioenergetic membranes is a universal feature of life. The eventual compartmentalisation of prebiotic systems is therefore often argued to comprise a key step during the origin of life.
Craig Robert Walton, Oliver Shorttle
doaj   +1 more source

Beyond prebiotic chemistry [PDF]

open access: yesScience, 2016
What dynamic network properties allow the emergence of life?
Cronin, Leroy, Walker, Sara Imari
openaire   +1 more source

Radicals in prebiotic chemistry

open access: yesPure and Applied Chemistry, 2020
Abstract Radical chemistry is tightly interwoven in proposed prebiotic synthetic pathways, reaction networks and geochemical scenarios that have helped shape our understanding of how life could have originated. Gas-phase prebiotic reactions involving electric discharge, vapour ablation by asteroidal and cometary impacts as well as ...
Renee W. J. Lim, Albert C. Fahrenbach
openaire   +1 more source

Harnessing Chemical Energy for the Activation and Joining of Prebiotic Building Blocks [PDF]

open access: yes, 2019
Simultaneous activation of carboxylates and phosphates provides multiple pathways for the generation of reactive intermediates, including mixed carboxylic acid-phosphoric acid anhydrides, for the synthesis of peptidyl-RNAs, peptides, RNA oligomers and ...
Jianfeng, Xu   +5 more
core   +1 more source

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