Share This Author
Histidine biosynthetic pathway and genes: structure, regulation, and evolution.
Centro di Endocrinologia ed Oncologia Sperimentale del Consiglio Nazionale delle Ricerche, Dipartimento di Biologia e Patologia Cellulare e Molecolare, and Departamento de Biologyia, Faculdad de Ciencias, Universidad Nacional Autonoma de Mexico.
The Origin and Early Evolution of Life: Prebiotic Chemistry, the Pre-RNA World, and Time
The genomic tree as revealed from whole proteome comparisons.
The genomic trees presented here place the Archaea in the proximity of the Bacteria when the whole gene content of each organism is considered, and when ancestral gene duplications are eliminated.
Astrophysical and astrochemical insights into the origin of life
Stellar nucleosynthesis of heavy elements such as carbon allowed the formation of organic molecules in space, which appear to be widespread in our Galaxy. The physical and chemical…
The Last Common Ancestor: What's in a name?
Dead-type RNA helicase and enolase genes are as conserved as many transcription and translation genes, suggesting the early evolution of a control mechanism for gene expression at the RNA level, providing additional support to the hypothesis that during early cellular evolution RNA molecules played a more prominent role.
Comets and the Origin and Evolution of Life
Sun, 30 Dec 2018 16:37:00 GMT comets and the origin and pdf The origin of water on Earth, or the reason that there is clearly more liquid water on Earth than on the other rocky planets of the Solar…
A Reassessment of Prebiotic Organic Synthesis in Neutral Planetary Atmospheres
- H. Cleaves, J. Chalmers, A. Lazcano, Stanley L. Miller, J. Bada
- ChemistryOrigins of Life and Evolution of Biospheres
- 19 January 2008
It is shown here that contrary to previous reports, significant amounts of amino acids are produced from neutral gas mixtures, suggesting that endogenous synthesis from neutral atmospheres may be more important than previously thought.
Molecular Evolution of the Lysine Biosynthetic Pathways
A detailed genomic analysis of each of the sequences involved in the two lysine anabolic routes, as well as of genes from other routes related to them, demonstrates a clear relationship between the DAP and Arg routes, and between the AAA and Leu pathways.
On the Origin of Metabolic Pathways
The semienzymatic theory of the origin of metabolism proposed here is similar to the Horowitz hypothesis but includes the use of compounds leaking from preexisting pathways as well as prebiotic compounds from the environment.
How long did it take for life to begin and evolve to cyanobacteria?
There is convincing paleontological evidence showing that stromatolite-building phototactic prokaryotes were already in existence 3.5 × 109 years ago, and it is likely that self-replicating systems capable of undergoing Darwinian evolution emerged in a period shorter than the destruction rates of its components.