Results 111 to 120 of about 20,271 (285)
Suggested Model for Prebiotic Evolution: The Use of Chaos [PDF]
Proceedings of the National Academy of Sciences, 1983 I elaborate on an earlier model for prebiotic evolution by adding a selection function depending randomly on base-pair correlations along the replicating RNA chains. By analogy with the equilibrium statistics of spin glass, this should give a wide variety of metastable "species" that can mutate or combine symbiotically.
openaire +2 more sources
Structural and Functional Properties of Ingredient Composition in Kenkey Preparation: A Review
ChemFoodChem, EarlyView.This review synthesizes three decades of research on kenkey, a fermented maize staple of West Africa. Examining the structural, functional, and nutritional properties that emerge from traditional fermentation and thermal processing, and identifying priorities for future research toward quality standardization and commercial development. ABSTRACT Kenkey,
Afia Sakyiwaa Amponsah
wiley +1 more source
Life, 2019 Information is the currency of life, but the origin of prebiotic information remains a mystery. We propose transitional pathways from the cosmic building blocks of life to the complex prebiotic organic chemistry that led to the origin of information ...
Sankar Chatterjee, Surya Yadav
doaj +1 more source
Simple Guanosine—Amino Acid Hybrids as Low Molecular Weight Hydrogelators
Chemistry – A European Journal, EarlyView.Unexplored guanosine‐amino acid derivatives act as low molecular weight hydrogelators. Gelation is triggered by K+ ions and pH changes and relies on G‐quadruplex formation. Small changes in the amino acid structure have a strong impact on the mechanical properties of the gels.
Silvia Pieraccini +6 more
wiley +1 more source
Prebiotic thiol-catalyzed thioamide bond formation
Geochemical TransactionsThioamide bonds are important intermediates in prebiotic chemistry. In cyanosulfidic prebiotic chemistry, they serve as crucial intermediates in the pathways that lead to the formation of many important biomolecules (e.g., amino acids).
Andrew S. Hyde, Christopher H. House
doaj +1 more source
A prebiotic basis for ATP as the universal energy currency
PLoS Biology, 2022 ATP is universally conserved as the principal energy currency in cells, driving metabolism through phosphorylation and condensation reactions. Such deep conservation suggests that ATP arose at an early stage of biochemical evolution. Yet purine synthesis
Silvana Pinna +7 more
doaj
Extending the Modern Synthesis: The evolution of ecosystems [PDF]
, 2010 The Modern Evolutionary Synthesis formalizes the role of variation, heredity, differential reproduction and mutation in population genetics. Here we explore a mathematical structure, based on the asymptotic limit theorems of information theory, that ...
Rodrick Wallace
core +2 more sources
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
The Construction of Biological 'Inter-Identity' as the Outcome of a Complex Process of Protocell Development in Prebiotic Evolution. [PDF]
Front Physiol, 2020 Ruiz-Mirazo K +3 more
europepmc +1 more source
Primordial RNA Replication and Applications in PCR Technology [PDF]
, 2013 The emergence of self-replication and information transmission in life's origin remains unexplained despite extensive research on the topic. A hypothesis explaining the transition from a simple organic world to a complex RNA world is offered here based ...
Palasek, Stan
core