To carefully determine the phylogenetic position of the novel Asgard lineages in relation to other Archaea and to eukaryotes, we performed various in-depth phylogenomic analyses of concatenated rRNA ...

Scientists have found a microbe that does something textbooks say is impossible: It's a complex cell that survives without mitochondria. Mitochondria are the powerhouses inside eukaryotic cells, the ...

A group of scientists from Japan--led by Prof Takashi Kamakura of Tokyo University of Science--has demonstrated, for the first time, the molecular and cellular basis of the "adverse" effects of the ...

Fossils of single cells have been found in 2-billion-year-old rocks in China. The microfossils may be the oldest examples of complex eukaryotic cells in the fossil record – in which case they may be ...

A new study shows that eukaryotic ribosomes can be modified to respond to antibiotics in the same way that prokaryotic ribosomes do. According to researchers at the University of Illinois Chicago, the ...

Modern biology textbooks assert that only bacteria can take nitrogen from the atmosphere and convert it into a form that is usable for life. Plants that fix nitrogen, such as legumes, do so by ...