(B) The rooted three-domain tree. (C) The network of life. A: archaea; B: bacteria; E: eukaryote; LUCA: last universal common ancestor of cellular life-forms. The question mark indicates the ...

of all cellular life really existed, although we still know little about what this ancestor was like and how it lived. Finally, the three-domain structure of Woese's tree (Figure 1a) shows that ...

A high throughput screen of >30,000 diverse repressor domains from across the tree of life identifies repressor domains with unique structures that underpin enhanced epigenetic effector domain ...