Results 21 to 30 of about 1,043,960 (288)

Inorganic Fe-O and Fe-S oxidoreductases: paradigms for prebiotic chemistry and the evolution of enzymatic activity in biology. [PDF]

open access: yesFront Chem
Oxidoreductases play crucial roles in electron transfer during biological redox reactions. These reactions are not exclusive to protein-based biocatalysts; nano-size (
Huang XL   +3 more
europepmc   +2 more sources

Plasma Modeling and Prebiotic Chemistry: A Review of the State-of-the-Art and Perspectives. [PDF]

open access: yesMolecules, 2021
We review the recent progress in the modeling of plasmas or ionized gases, with compositions compatible with that of primordial atmospheres. The plasma kinetics involves elementary processes by which free electrons ultimately activate weakly reactive ...
Micca Longo G   +4 more
europepmc   +2 more sources

An XPS study of HCN-derived films on pyrite surfaces: a prebiotic chemistry standpoint towards the development of protective coatings. [PDF]

open access: yesRSC Adv, 2021
Traditionally, the effect of mineral surfaces on increasing molecular complexity has been considered a major issue in studies about the origin of life.
Pérez-Fernández C   +3 more
europepmc   +2 more sources

Nanoscale Anatomy of Iron-Silica Self-Organized Membranes: Implications for Prebiotic Chemistry. [PDF]

open access: yesAngew Chem Int Ed Engl, 2021
Iron‐silica self‐organized membranes, so‐called chemical gardens, behave as fuel cells and catalyze the formation of amino/carboxylic acids and RNA nucleobases from organics that were available on early Earth.
Kotopoulou E   +3 more
europepmc   +2 more sources

Extraterrestrial hexamethylenetetramine in meteorites-a precursor of prebiotic chemistry in the inner solar system. [PDF]

open access: yesNat Commun, 2020
Despite extensive studies on the formation of organic molecules in various extraterrestrial environments, it still remains under debate when, where, and how such molecules were abiotically formed.
Oba Y   +6 more
europepmc   +2 more sources

Phosphorus mineral evolution and prebiotic chemistry: from minerals to microbes

open access: yesEarth-Science Reviews, 2021
Phosphorus availability is considered a limiting factor in many scenarios for the origin of life. The concentration of P in environments of prebiotic interest will have been governed by the available mineral sources of P on the early Earth.
C. Walton   +9 more
semanticscholar   +3 more sources

Frontiers in Prebiotic Chemistry and Early Earth Environments. [PDF]

open access: yesOrig Life Evol Biosph, 2022
The Prebiotic Chemistry and Early Earth Environments (PCE3) Consortium is a community of researchers seeking to understand the origins of life on Earth and in the universe. PCE3 is one of five Research Coordination Networks (RCNs) within NASA's Astrobiology Program.
Müller UF   +11 more
europepmc   +6 more sources

Prebiotic Chemistry: Geochemical Context and Reaction Screening [PDF]

open access: yesLife, 2013
The origin of life on Earth is widely believed to have required the reactions of organic compounds and their self- and/or environmental organization. What those compounds were remains open to debate, as do the environment in and process or processes by ...
Henderson James Cleaves
doaj   +3 more sources

Komatiites as Complex Adsorption Surfaces for Amino Acids in Prebiotic Environments, a Prebiotic Chemistry Essay [PDF]

open access: yesLife, 2022
Komatiites represent the oldest known terrestrial rocks, and their composition has been cataloged as the closest to that of the first terrestrial crust after the cooling of the magma ocean.
Abigail E. Cruz-Hernández   +3 more
doaj   +2 more sources

Radicals in prebiotic chemistry

open access: yesPure and Applied Chemistry, 2020
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.
Renee Lim, A. Fahrenbach
semanticscholar   +2 more sources

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