Results 61 to 70 of about 2,479 (207)
Natural Radioactivity and Chemical Evolution on the Early Earth: Prebiotic Chemistry and Oxygenation
Molecules, 2022 It is generally recognized that the evolution of the early Earth was affected by an external energy source: radiation from the early Sun. The hypothesis about the important role of natural radioactivity, as a source of internal energy in the evolution of
Boris Ershov
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Christian Bohr. Discoverer of Homotropic and Heterotopic Allostery
Acta Physiologica, Volume 241, Issue S734, July 2025.ABSTRACT This essay recounts and revisits the scientific contributions of Christian Bohr, highlighting his pivotal role in discovering allostery about 120 years ago. Bohr's meticulous experimentation led to identifying two distinct forms of allostery: homotropic (single‐ligand) and heterotropic (multi‐ligand), the latter widely recognized as the Bohr ...
Niels Bindslev
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Chemistry – A European Journal, Volume 31, Issue 29, May 22, 2025.APR‐A, an aggregation‐prone oligopeptide, can convert into APR‐B through distinct mutational pathways—some exclusively forming insoluble amyloid‐like peptides, others yielding water‐soluble, non‐aggregating monomers. These orthogonal pathways in chemical evolution may have driven macromolecular assembly under prebiotic Earth conditions, potentially ...
Fruzsina Bencs +7 more
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Autopoiesis Concepts for Chemical Origins of Life and Synthetic Biology [Stenogram of the popular lecture on the foreign bibliographic seminar] [PDF]
, 2017 The monograph (Luisi P.L. "The Emergence of Life: From Chemical Origins to Synthetic Biology", 2010, Cambridge University Press, Cambridge, New York etc., 315 p.) is a well-written, informative book providing a novel view on the interrelation between the
Gradoff, Olle
core
Valuing life detection missions
, 2018 Recent discoveries imply that Early Mars was habitable for life-as-we-know-it; that Enceladus might be habitable; and that many stars have Earth-sized exoplanets whose insolation favors surface liquid water. These exciting discoveries make it more likely
Gaidos, Eric +2 more
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Abiogenesis: the Carter argument reconsidered
International Journal of Astrobiology, 2022 AbstractThe observation of life on Earth is commonly believed to be uninformative regarding the probability of abiogenesis on other Earth-like planets. This belief is based on the selection effect of our existence. We necessarily had to find ourselves on a planet where abiogenesis occurred, thus nothing can be inferred about the probability of ...
openaire +2 more sources
Angewandte Chemie, Volume 136, Issue 8, February 19, 2024.Alkali‐ and alkaline‐earth‐metal‐promoted Co−Fe bimetallic catalysts on silica can convert CO2 and H2O to crucial metabolites such as formate, acetate, pyruvate as well as hydrocarbons under mild hydrothermal vent conditions. With alkali‐ and alkaline‐earth metals abundant in hydrothermal vents, our study simulates how the geochemical process can fix ...
Youngdong Song +2 more
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The Nature of Stability in Replicating Systems
Entropy, 2011 We review the concept of dynamic kinetic stability, a type of stability associated specifically with replicating entities, and show how it differs from the well-known and established (static) kinetic and thermodynamic stabilities associated with regular ...
Addy Pross, Nathaniel Wagner
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Evaluation of antiobesogenic properties of fermented foods: In silico insights
Journal of Food Science, Volume 90, Issue 3, March 2025.Abstract Obesity prevalence has steadily increased over the past decades. Standard approaches, such as increased energy expenditure, lifestyle changes, a balanced diet, and the use of specific drugs, are the conventional strategies for preventing or treating the disease and its associated complications.
Abdullahi Adekilekun Jimoh +1 more
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Step‐by‐Step Towards Biological Homochirality – from Prebiotic Randomness To Perfect Asymmetry
Chemistry – An Asian Journal, Volume 20, Issue 1, January 2, 2025.This review focuses on the theories related to the emergence of biological homochirality, from assembly of building blocks at the monomer level, to polymerization into functional homochiral biopolymers. Abstract The history of life's formation and the origin of its stereochemistry are nearly as multifaceted as the life itself.
Ivana Mejdrová +2 more
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