Results 1 to 10 of about 6,446,269 (330)

Chemical evolution of primordial salts and organic sulfur molecules in the asteroid 162173 Ryugu. [PDF]

open access: yesNat Commun, 2023
Samples from the carbonaceous asteroid (162173) Ryugu provide information on the chemical evolution of organic molecules in the early solar system. Here we show the element partitioning of the major component ions by sequential extractions of salts ...
Yoshimura T   +43 more
europepmc   +2 more sources

Chemical evolution of an autonomous DNAzyme with allele-specific gene silencing activity. [PDF]

open access: yesNat Commun, 2023
Low activity has been the primary obstacle impeding the use of DNA enzymes (DNAzymes) as gene silencing agents in clinical applications. Here we describe the chemical evolution of a DNAzyme with strong catalytic activity under near physiological ...
Nguyen K, Malik TN, Chaput JC.
europepmc   +2 more sources

Chemical Evolution of Natural Product Structure. [PDF]

open access: yesJ Am Chem Soc, 2022
Natural products are the result of Nature’s exploration of biologically relevant chemical space through evolution and an invaluable source of bioactive small molecules for chemical biology and medicinal chemistry.
Grigalunas M, Brakmann S, Waldmann H.
europepmc   +2 more sources

Pseudo Natural Products-Chemical Evolution of Natural Product Structure. [PDF]

open access: yesAngew Chem Int Ed Engl, 2021
Pseudo‐natural products (PNPs) combine natural product (NP) fragments in novel arrangements not accessible by current biosynthesis pathways. As such they can be regarded as non‐biogenic fusions of NP‐derived fragments.
Karageorgis G   +4 more
europepmc   +2 more sources

Autocatalytic Sets Arising in a Combinatorial Model of Chemical Evolution [PDF]

open access: yesLife, 2022
The idea that chemical evolution led to the origin of life is not new, but still leaves open the question of how exactly it could have led to a coherent and self-reproducing collective of molecules.
Wim Hordijk, Mike Steel, Stuart Kauffman
doaj   +2 more sources

The Informational Substrate of Chemical Evolution: Implications for Abiogenesis [PDF]

open access: yesLife, 2019
A key aspect of biological evolution is the capacity of living systems to process information, coded in deoxyribonucleic acid (DNA), and used to direct how the cell works.
Andrés de la Escosura
doaj   +2 more sources

Role of Mineral Surfaces in Prebiotic Chemical Evolution. In Silico Quantum Mechanical Studies. [PDF]

open access: yesLife (Basel), 2019
There is a consensus that the interaction of organic molecules with the surfaces of naturally-occurring minerals might have played a crucial role in chemical evolution and complexification in a prebiotic era.
Rimola A, Sodupe M, Ugliengo P.
europepmc   +2 more sources

A recursive microfluidic platform to explore the emergence of chemical evolution [PDF]

open access: yesBeilstein Journal of Organic Chemistry, 2017
We propose that a chemically agnostic approach to explore the origin of life, using an automated recursive platform based on droplet microfluidics, could be used to induce artificial chemical evolution by iterations of growth, speciation, selection, and ...
David Doran   +4 more
doaj   +2 more sources

Primitive Photosynthetic Architectures Based on Self‐Organization and Chemical Evolution of Amino Acids and Metal Ions [PDF]

open access: yesAdvanced Science, 2018
The emergence of light‐energy‐utilizing metabolism is likely to be a critical milestone in prebiotic chemistry and the origin of life. However, how the primitive pigment is spontaneously generated still remains unknown.
Kai Liu   +4 more
doaj   +2 more sources

Retrocausality in Quantum Phenomena and Chemical Evolution

open access: yesInformation, 2016
The interplay between retrocausality and the time-reversal symmetry of the dynamical law of quantum mechanics underscores the significance of the measurement dynamics with the use of indivisible and discrete quantum particles to be mediated.
Koichiro Matsuno
doaj   +2 more sources

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