Results 51 to 60 of about 2,232 (202)
Straightforward Creation of Possibly Prebiotic Complex Mixtures of Thiol-Rich Peptides
Life, 2023 At the origin of life, extremely diverse mixtures of oligomers and polymers could be obtained from relatively simple molecular bricks. Here, we present an example of the polymerization of two amidonitriles derived from cysteine, Cys-Ala-CN and Cys-Met-CN.
Ibrahim Shalayel +3 more
doaj +1 more source
AGU Advances, Volume 4, Issue 6, December 2023., 2023 Abstract Aqueous S[IV] species (HSO3− ${\mathrm{H}\mathrm{S}\mathrm{O}}_{3}^{-}$, SO32− ${\mathrm{S}\mathrm{O}}_{3}^{2-}$) derived from volcanogenic atmospheric SO2 are important to planetary habitability through their roles in proposed origins‐of‐life chemistry and influence on atmospheric sulfur haze formation, but the early cycling of S[IV] is ...
Sukrit Ranjan +8 more
wiley +1 more source
Hybrid Life: Integrating biological, artificial, and cognitive systems
WIREs Cognitive Science, Volume 14, Issue 6, November/December 2023., 2023 Hybrid Life brings attention to some recent developments within the Artificial Life community, focusing on the integration of three themes: theories of systems and agents, hybrid augmentation combining living and artificial systems, and hybrid interactions among artificial and biological systems.
Manuel Baltieri +4 more
wiley +1 more source
Quantifying Catalysis at the Origin of Life**
Chemistry – A European Journal, Volume 29, Issue 53, September 21, 2023., 2023 Origin of life theories often invoke catalytic mechanisms, but catalysis of biologically relevant reactions in geologically plausible scenarios has been until recently experimentally elusive. In this perspective, we suggest that researchers move toward decreased catalyst loading, increased yields, as well as before/after characterization of metals or ...
Ruvan de Graaf +3 more
wiley +1 more source
Life, 2019 The alkaline-hydrothermal-vent theory for the origin of life predicts the spontaneous reduction of CO2, dissolved in acidic ocean waters, with H2 from the alkaline vent effluent.
Victor Sojo +4 more
doaj +1 more source
Quantum Computing for Molecular Biology**
ChemBioChem, Volume 24, Issue 13, July 3, 2023., 2023 A road map for quantum computing in molecular biology with a potentially ground‐breaking quantum advantage is presented. Key concepts are introduced to connect the terminology of biology, chemistry, physics, and computer science that are all relevant for this transdisciplinary endeavor.
Alberto Baiardi +2 more
wiley +1 more source
Quantifying the Origins of Life on a Planetary Scale [PDF]
, 2015 A simple, heuristic formula with parallels to the Drake Equation is introduced to help focus discussion on open questions for the origins of life in a planetary context. This approach indicates a number of areas where quantitative progress can be made on
Cronin, Leroy, Scharf, Caleb
core +2 more sources
Superconductivity mystery turns 25 [PDF]
Nature 576, 386-387 (2019), 2020 In 1994, an unconventional form of superconductivity was detected in strontium ruthenate. The discovery has shed light on the mechanism of unconventional superconductivity at high temperatures. "The great tragedy of Science [is] the slaying of a beautiful hypothesis by an [experimental] fact." - T.H. Huxley, Biogenesis and abiogenesis, (1884)
arxiv +1 more source
On the Evolutionary History of the Twenty Encoded Amino Acids
Chemistry – A European Journal, Volume 28, Issue 55, October 4, 2022., 2022 Amino acids and proteins! “Unde venistis”? The answer to the question of where these (macro)molecules come from is told as a journey that starts with meteorites and ends with the origin of the genetic code. On this journey, which incorporates the citric acid cycle and glycolysis, molecular companions and fellow travelers appear on the scene, in ...
Andreas Kirschning
wiley +1 more source
Physical constraints on the likelihood of life on exoplanets [PDF]
, 2017 One of the most fundamental questions in exoplanetology is to determine whether a given planet is habitable. We estimate the relative likelihood of a planet's propensity towards habitability by considering key physical characteristics such as the role of
Lingam, Manasvi, Loeb, Abraham
core +1 more source