Eukaryotic cells change their shapes, actively segregate their DNA and contain membrane networks, facilitated by a complex cytoskeleton containing actin filaments, microtubules made from tubulin, and other components.
Eukaryotes
![Contribution of springs to the lake. (A) Venn diagram of genera found in the Corral Springs biofilm, salt crust, Springs 1 and 2 (S1, S2 combined), Roberts Ranch/Wyman Creek (RS), and the lake water. (B) Mixing proportions calculated using SourceTracker using the lake water samples (LW1, LW2, and overnight incubated [ON]) and the salt crust as sinks, and the biofilm, RS, S1 and S2 as sources. “Unk” indicates “unknown source.” The Gibbs sampler was run for 10,000 iterations. -- Frontiers](https://i0.wp.com/astrobiology.com/wp-content/uploads/2026/02/Microbial-communities-of-selected.png?resize=1200%2C720&ssl=1)
Posted inAway Teams & Field Reports, Biogeochemical Cycles & Geobiology, Biosignatures & Paleobiology, Extremeophiles and Extreme Environments, Genomics, Proteomics, Bioinformatics, Habitable Zones, Microbiology & Virology, Sample Return, Status Report
Microbial Communities Of Selected Regions Of The Deep Springs Lake Aquifer System
Deep Springs Lake is a small, isolated, highly alkaline soda lake in Inyo County of Eastern California, USA. It is a seasonally filled salt lake or playa, and is part […]
Posted inGenomics, Proteomics, Bioinformatics, Microbiology & Virology, Origin & Evolution of Life, Status Report
Dominant Contribution Of Asgard Archaea To Eukaryogenesis
The origin of eukaryotes is one of the key problems in evolutionary biology. The demonstration that the last eukaryotic common ancestor (LECA) already contained the mitochondrion—an endosymbiotic organelle derived from […]
Posted inExtremeophiles and Extreme Environments, Genomics, Proteomics, Bioinformatics, Microbiology & Virology, Origin & Evolution of Life, Press Release
Deep Origin Of Eukaryotes Outside Heimdallarchaeia Within Asgardarchaeota
Research on the morphology, physiology and genomics of Asgard archaea has provided valuable insights into the evolutionary history of eukaryotes.
Posted inBiophysics, Biosignatures & Paleobiology, Extremeophiles and Extreme Environments, Genomics, Proteomics, Bioinformatics, Imaging & Spectroscopy, Microbiology & Virology, Nanotechnology & SynBio, Status Report
Amazing Structural Diversity Of Giant Virus-like Particles In Forest Soil
Large DNA viruses of the phylum Nucleocytoviricota infect diverse eukaryotic hosts from protists to humans, with profound consequences for aquatic and terrestrial ecosystems. While nucleocytoviruses are known to be highly […]
Posted inBiosignatures & Paleobiology, Fossils & Paleontology, Microgravity, Nomenclature, Systematics, Natural History, Origin & Evolution of Life, Plant Biology, Status Report
Ancient Prototaxites Don’t Belong To Any Living Lineage – Possibly A Distinct Branch of Multicellular Earth life
Prototaxites was an extinct lineage of multicellular terrestrial eukaryotes. Prototaxites was the first giant organism to live on the terrestrial surface, reaching sizes of 8 metres in the Early Devonian.
Posted inBiochemistry & Organic Chemistry, Biophysics, Biosignatures & Paleobiology, Extremeophiles and Extreme Environments, Genomics, Proteomics, Bioinformatics, Habitable Zones, Microbiology & Virology, Status Report
Henneguya salminicola Lacks A Mitochondrial Genome And Does Not Require Oxygen
Mitochondrial respiration is an ancient characteristic of eukaryotes. However, it was lost independently in multiple eukaryotic lineages as part of adaptations to an anaerobic lifestyle.
Posted inGenomics, Proteomics, Bioinformatics, Microbiology & Virology, Press Release
Modern Immunity And Ancient Microbes
When you get infected with a virus, some of the first weapons your body deploys to fight it were passed down to us from our microbial ancestors billions of years […]
Posted inGenomics, Proteomics, Bioinformatics, Microbiology & Virology, Nomenclature, Systematics, Natural History, Origin & Evolution of Life, Press Release
Ancient Microbes Offer Clues To How Complex Life Evolved
A new study published in Science Advances reveals a surprising twist in the evolutionary history of complex life. Researchers at Queen Mary University of London have discovered that a single-celled […]
Posted inExtremeophiles and Extreme Environments, Fossils & Paleontology, Genomics, Proteomics, Bioinformatics, Microbiology & Virology, Press Release
Connections Between Archaea And Eukarya
NASA-supported researchers have examined the order and organization of genes that code for ribosomal protein in a group of archaea known as Asgard. The study is helping scientists better understand […]