ribosome Archives

The proposed evolutionary network between the modern four b-barrels through the missing link fold, DZBB. The experimentally verified routes between each mutant pair are connected with black arrows, and the minimal necessary mutations between designs are written in purple. The DPBB protein’s evolutionary pathway, which was examined in the previous study, is highlighted in a light red background. The evolutionary routes of DZBB, RIFT, OB, and SH3 are highlighted in gray, light blue, pink, and green backgrounds, respectively. Representative proteins conserving each barrel fold are shown in the upper panel. -- Biorxiv.org

Biochemistry & Organic Chemistry, Genomics, Proteomics, Bioinformatics, Nanotechnology & SynBio, Origin & Evolution of Life, Press Release

Missing-link Fold Reveals The Evolutionary Pathway Between RNA Polymerase And Ribosomal Proteins

by Keith CowingJuly 30, 2023July 30, 2023

Numerous molecular machines are required to drive the central dogma of molecular biology. However, the means by which such numerous proteins emerged in the early evolutionary stage of life remains […]

Secondary structure of the tt_A1P1 construct predicted by mfold (Zuker, 2003). With a ΔG of -64.30 Kcal/mol. Thermus thermophilus numbering system is used. According to this prediction base paring shift occur in H74, H89 and H90. The overall shape of H90 has grown by at least three base pairs at the beginning of the helix compared to the secondary structure of the extant ribosome. -- PNAS

Genomics, Proteomics, Bioinformatics, Origin & Evolution of Life, Status Report

How To Build A Protoribosome

by Keith CowingApril 1, 2023April 1, 2023

NASA-supported scientists have reexamined some previous assumptions about how the ribosome in living cells is constructed. The ribosome is a large molecule found in all living cells that catalyzes the […]

ribosome

Missing-link Fold Reveals The Evolutionary Pathway Between RNA Polymerase And Ribosomal Proteins

How To Build A Protoribosome

Carbon and Sulfur Isotopes of Microfossils and Pyrites from Neoarchean Cherts: Microbial Diversity in an Ancient Deep-Marine Environment

Auroral Belts As Magnetically Localized Reactors For Prebiotic Chemistry On Early Earth

SwRI Simulations Indicate That Large Impacts May Limit Ocean Formation In Icy Moons

Trans-Neptunian Objects Remember Their Past

JWST Excludes Exomoons Down to 0.1 Earth Radii Around a Rocky, Temperate Exoplanet