histidine Archives

LUCA clans inform the origins of the current genetic code, while pre-LUCA clans reflect a still older system. Colored sequences emerged at different stages during the construction of the current genetic code. Grey sequences emerged under some more ancient, unknown, nowextinct coding mechanism(s). By current code, we include not just the canonical code, but also its direct ancestors. -- biorxiv.org

Biochemistry & Organic Chemistry, Biophysics, Biosignatures & Paleobiology, Genomics, Proteomics, Bioinformatics, Origin & Evolution of Life, Status Report

Identifying The Last Universal Common Ancestor’s Protein Domains Resolves The Order In Which The Amino Acids Were Recruited Into The Genetic Code

by Keith CowingApril 23, 2024April 23, 2024

We identified protein domains that emerged early in the history of life. Protein domains whose ancestors date back to a single homolog in the Last Universal Common Ancestor (LUCA) remain […]

histidine

Identifying The Last Universal Common Ancestor’s Protein Domains Resolves The Order In Which The Amino Acids Were Recruited Into The Genetic Code

Can AI Detect Life? Lessons From Artificial Life

Electron Irradiation And Temperature-programmed Desorption Of Layered Ethanolamine-water-methanol Ices

Delayed Methane Detection in 3I/ATLAS: GCR-Driven Subsurface Stratification and Interstellar Exposure Age Constraints

Faithful Neural Embeddings For 3D Exoplanet Climate Modeling

Multiband Color Monitoring of 3I/ATLAS Through Ground-Based Relay Observations