Results 21 to 30 of about 2,457 (208)
Did Homocysteine Take Part in the Start of the Synthesis of Peptides on the Early Earth?
Biomolecules, 2022 Unlike its shorter analog, cysteine, and its methylated derivative, methionine, homocysteine is not today a proteinogenic amino acid. However, this thiol containing amino acid is capable of forming an activated species intramolecularly.
Sparta Youssef-Saliba +2 more
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Synthesis and Characterization of Amino Acid Decyl Esters as Early Membranes for the Origins of Life
Membranes, 2022 Understanding how membrane forming amphiphiles are synthesized and aggregate in prebiotic settings is required for understanding the origins of life on Earth 4 billion years ago.
Isabella Lago +3 more
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Panspermia versus Abiogenesis: A Clash of Cultures
Journal of Scientific Exploration, 2022 We are too often led to believe that strident denunciations of an unorthodox position in science are always based upon rational argument and irrefutable fact. This is clearly not so in many instances, one of which relates to panspermia and the dispersal of life throughout the universe. We are led to believe that from the beginning of the enlightenment
Chandra Wickramasinghe
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The origin of life: what we know, what we can know and what we will never know [PDF]
Open Biology, 2013 The origin of life (OOL) problem remains one of the more challenging scientific questions of all time. In this essay, we propose that following recent experimental and theoretical advances in systems chemistry, the underlying principle governing the ...
Addy Pross, Robert Pascal
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Biblical Perspectives as a Guide to Research on Life’s Origin and History
Religions, 2023 The more than thirty spacetime theorems developed over the past five decades establish that the universe and its spacetime dimensions have emerged from a cause/causal agent beyond the cosmos.
Hugh Norman Ross
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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
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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
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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
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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
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