Complex organic molecules (COMs) are thought to form in cold interstellar environments, yet the chemical routes to key prebiotic precursors remain poorly understood. Glycine, the simplest amino acid, has not […]
In addition to being delivered via exogenous means (e.g., chondritic meteorites and comets), amino acids are hypothesized to have been present on early Earth via Urey–Miller-type abiotic processes.
Two microscopic grains collide and produce a tiny spark. This phenomenon may have provided the energy to kick off life on Earth. But if these solid particles have the same […]
Previously proposed chronologies of amino acid incorporation into the genetic code rely on consensus rankings derived from prebiotic synthesis experiments, biosynthetic pathways, or genomic trends.
The presence of amino acids in comets and meteorites has long suggested that prebiotic molecules may have formed in space and contributed to the origins of life on Earth.
The earliest enzymes are thought to have been composed of the limited amino acid repertoire available on prebiotic Earth. However, how such compositional simplicity shaped catalytic capability remains unclear.
The central dogma of molecular biology describes how genetic information stored in nucleic acids guides the formation of structured proteins from a single molecular alphabet of twenty amino acids (C20)1,2.
The uneven detection of prebiotic organic compounds in meteorites—where amino acids and nucleobases are commonly identified but sugars remain rare and poorly characterized—limits our understanding of extraterrestrial organic chemistry.
Proteins are among the most important building blocks of nature and play a central role in biological processes in all organisms.
Electron transfer coupled to redox chemistry is at the heart of metabolism. The proteins responsible for moving electrons (protein electron carriers) must have emerged at the origin of life.
