[biorxiv.org] Understanding how the mitochondrion evolved from a bacterial endosymbiont to an organelle is obscured by time and a lack of comparative examples.
ribosome
Posted inGenomics, Proteomics, Bioinformatics
Pathways Of Early Evolution From The Perspectives Of A Riboreplisome — The Ultimate RNA Machine Of Life
[q-bio.PE] Translation of the genetic code into proteins is universal across life, with ribosomes serving as the ancient molecular machines enabling this information transformation. We propose that early replication and […]
![A symbiotic scenario for co-evolution of the ribosome and the replicase. Two variations of the scenario are depicted, whereby the peptidyltransferase center (PTC) and the replicase (REP) ribozymes are encoded by distinct (A) or the same (B) RNA molecule. The figure depicts three major stages of cellular evolution from the primordial RNA world (left) to the intermediate RNA-protein world (center) and the last universal cellular ancestor (LUCA, right). The major events occurring during each stage are briefly described in the corresponding information boxes at the bottom of the figure. -- [q-bio.PE]](https://i0.wp.com/astrobiology.com/wp-content/uploads/2026/08/The-selfish.png?resize=1200%2C712&ssl=1)
Posted inGenomics, Proteomics, Bioinformatics
The Selfish Ribosome
[q-bio.PE]. The ribosome is responsible for protein synthesis in all cells, and is the largest energy consumer in the cell.
Posted inBiochemistry & Organic Chemistry, Biophysics, Genomics, Proteomics, Bioinformatics, Microbiology & Virology, Origin & Evolution of Life, Status Report
Modularity, Ecology, And Theoretical Evolution Of The Ribozyme Body Plan
Ribozymes are relics of molecular life forms from the primitive earth that are embedded within modern genomes across all kingdoms of life. Despite significant knowledge from decades of bioinformatic and […]
Posted inBiophysics, Genomics, Proteomics, Bioinformatics, Origin & Evolution of Life, Press Release
A Parasitic Origin For The Ribosome?
Ribosomes are the components of cells that read RNA and build proteins. Without the ribosome, the chemistry of life would still be catalyzed by raw RNA. And yet the origin […]
Posted inGenomics, Proteomics, Bioinformatics, Status Report
Evolutionary Flexibility of Ribosome Biogenesis in Bacteria
Ribosomes are essential for protein synthesis and require ribosome biogenesis factors for assembly.
Posted inBiochemistry & Organic Chemistry, Biophysics, Genomics, Proteomics, Bioinformatics, Nanotechnology & SynBio, Origin & Evolution of Life, Press Release
SynBio: A Ring Has Been Added Onto Existing Ribosome Proteins
Inside our cells, ribosomes-the tireless “protein factories” of life-have just shown off a new skill they haven’t used in billions of years.
Posted inBiochemistry & Organic Chemistry, Biophysics, Biosignatures & Paleobiology, Genomics, Proteomics, Bioinformatics, Microbiology & Virology, Origin & Evolution of Life, Press Release
The Structural Link For Initiation Of Protein Synthesis In Bacteria
Within a cell, DNA carries the genetic code for building proteins.
Posted inBiochemistry & Organic Chemistry, Biophysics, Biosignatures & Paleobiology, Fossils & Paleontology, Genomics, Proteomics, Bioinformatics, Origin & Evolution of Life, Press Release
New Study Sheds Light on Ancient Protoribosome and its Role in Early Life Evolution
Scientists have uncovered new insights into the protoribosome, a molecular fossil within the ribosome, which plays a key role in the origin of life on Earth. This research, published in […]
Posted inAstropharmacy / Biotechnology, Biochemistry & Organic Chemistry, Biophysics, Biosignatures & Paleobiology, Commercial & Private Sector, Genomics, Proteomics, Bioinformatics, Nanotechnology & SynBio, Origin & Evolution of Life, Press Release
New Study Unveils RNA’s Role In Early Life And Future Bioengineering
The beginning of life on Earth and its evolution over billions of years continue to intrigue researchers worldwide. The central dogma or the directional flow of genetic information from a […]