Results 81 to 90 of about 2,707 (204)
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
wiley +1 more source
The Astrophysical JournalA wide variety of scenarios for the origin of life have been proposed, with many influencing the prevalence and distribution of biosignatures across exoplanet populations.
Martin Schlecker +7 more
doaj +1 more source
Life's Chirality From Prebiotic Environments
, 2012 A key open question in the study of life is the origin of biomolecular homochirality: almost every life-form on Earth has exclusively levorotary amino acids and dextrorotary sugars. Will the same handedness be preferred if life is found elsewhere?
Gleiser, Marcelo, Walker, Sara Imari
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The Evolution of Active Droplets in Chemorobotic Platforms [PDF]
, 2017 There is great interest in oil-in-water droplets as simple systems that display astonishingly complex behaviours. Recently, we reported a chemorobotic platform capable of autonomously exploring and evolving the behaviours these droplets can exhibit.
Cronin, Lee +4 more
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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
wiley +1 more source
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
wiley +2 more sources
The Origin of Life from Primordial Planets
, 2010 The origin of life and the origin of the universe are among the most important problems of science and they might be inextricably linked. Hydro-gravitational-dynamics (HGD) cosmology predicts hydrogen-helium gas planets in clumps as the dark matter of ...
Gibson, Carl H. +2 more
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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
wiley +1 more source
Factoring Origin of Life Hypotheses into the Search for Life in the Solar System and Beyond
Life, 2020 Two widely-cited alternative hypotheses propose geological localities and biochemical mechanisms for life’s origins. The first states that chemical energy available in submarine hydrothermal vents supported the formation of organic compounds and ...
Alex Longo, Bruce Damer
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IR SPECTRAL MAPPING OF THE MARTIAN SOUTH POLAR RESIDUAL CAP USING CRISM [PDF]
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2016 Polycyclic aromatic hydrocarbons (PAHs) are considered to be important in theories of abiogenesis (Allamandola, 2011) . There is evidence that PAHs have been detected on two icy Saturnian satellites using the Visual and Infrared Mapping Spectrometer ...
J. Campbell +3 more
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