Ten years ago, nobody knew that Asgard archaea even existed. In 2015, however, researchers examining deep-sea sediments ...

Who were our earliest ancestors? The answer could lie in a special group of single-celled organisms with a cytoskeleton similar to that of complex organisms, such as animals and plants.

Indeed, archaea and bacteria appear very similar biologically (members of both groups consist of tiny cells without much internal structure) and different from eukaryotes. However, until ...

While previous research had described bidirectional promoters in eukaryotes, as well as in a few bacteria and archaea species, the new study establishes divergent transcription—the reading of genes in ...

They discovered that some archaea use unusual types of enzymes called [FeFe]-hydrogenases. The archaea making these ...

There are two major types of hypothesis about how eukaryotes and their nuclei may have originated (Poole & Penny 2007). One of these involves fusion between cells from domains Archaea and Bacteria ...