Results 81 to 90 of about 925,381 (311)
Chemistry – A European Journal, EarlyView.Membrane‐forming phospholipids are produced in cells via enzymatic diacylation. Here, we show that direct aminolysis of acyl thioesters with diamino acids in aqueous environments enables the synthesis of diacylated amino acids (DAAAs), which spontaneously self‐assemble into robust phospholipid‐like vesicles across a broad range of pH and temperature ...
Federica A. Souto‐Trinei +2 more
wiley +1 more source
Prebiotic chemistry: a new modus operandi [PDF]
Philosophical Transactions of the Royal Society B: Biological Sciences, 2011 A variety of macromolecules and small molecules—(oligo)nucleotides, proteins, lipids and metabolites—are collectively considered essential to early life. However, previous schemes for the origin of life—e.g. the ‘RNA world’ hypothesis—have tended to assume the initial emergence of life based on one such molecular class followed by the sequential ...
Matthew W, Powner, John D, Sutherland
openaire +2 more sources
Chemistry – A European Journal, EarlyView.The study of the Diels–Alder reaction of cinnamaldehyde and cyclopentadiene, catalyzed by chiral imidazolidine‐4‐thiones, led to the discovery of a highly regio‐ and stereoselective Michael‐addition and consecutive ring closure. Here, the imidazolidine‐4‐thione not only catalytically activates cinnamaldehyde but also participates as the nucleophile to ...
Marian S. R. Ebeling +5 more
wiley +1 more source
The origin of life and the prebiotic chemistry
Semina: Ciências Exatas e Tecnológicas, 2004 In the present paper, a historical view from Oparin-Haldane hypothesis to prebiotic chemistry is discussed. Several aspects of prebiotic chemistry are also discussed such as: environments where the abiotic synthesis of biomolecules and biopolymers could
Dimas Augusto Morozin Zaia
doaj
Establishment of the mechanism of purification and levigation of green chemistry-assisted biocomposites of red ochre (Gairika): synthesis, characterization, and antibacterial, prebiotic, antioxidant, and antacid activities of the traditional Ayurvedic medicine Laghu Sutashekhara Rasa [PDF]
, 2023 Vaibhav Charde +14 more
openalex +1 more source
Catalytic Amyloids: Turning Fibrils Into Biocatalysts
Chemistry – A European Journal, EarlyView.Amyloids, traditionally associated with diseases, have emerged as versatile catalytic scaffolds. From natural amyloid sequences to bioinspired and de novo designs, we highlight strategies to construct catalytic active sites and anchor enzymes onto fibrils, creating versatile nanomaterials with tunable activities. ABSTRACT Amyloids have been regarded as
Alessandra Esposito +3 more
wiley +1 more source
Carbon clusters formed from shocked benzene
Nature Communications, 2021 Shock-wave driven reactions of organic molecules may have played a key role in prebiotic chemistry, but their mechanisms are difficult to investigate.
D. M. Dattelbaum +11 more
doaj +1 more source
Silent Partners in the Mill: Unveiling the Role of Additives in Mechanochemical Synthesis
Chemistry – A European Journal, EarlyView.Mechanochemistry offers a sustainable, solvent‐free alternative to traditional synthesis, often enhanced by additives in a process known as additive‐assisted grinding. This review discusses how various additives, including liquids, ionic solids, and advanced materials like ionic liquids and piezoelectric compounds, improve reaction efficiency ...
Johanna Breinsperger +3 more
wiley +1 more source
Non-canonical nucleosides and chemistry of the emergence of life
Nature Communications, 2018 Prebiotic chemistry, driven by changing environmental parameters provides canonical and a multitude of non-canonical nucleosides. This suggests that Watson-Crick base pairs were selected from a diverse pool of nucleosides in a pre-Darwinian chemical ...
Sidney Becker +3 more
doaj +1 more source
The Canadian Journal of Chemical Engineering, EarlyView.Abstract On the centennial of higher education in Chemical Engineering in Mexico, it is pertinent to revisit the key stages that have contributed to its consolidation as a vital discipline for the nation's scientific and technological advancement. Although the initial mission of chemical engineering education was primarily oriented toward the training ...
Agustín López Munguía +3 more
wiley +1 more source