They are widely distributed through all three biological kingdoms, eukarya, bacteria and archaea, indicating the biological significance of the retinal proteins.
2
This toxin has a remarkable distribution that spans two domains of life (Bacteria and Eukarya).
3
These he grouped under three new principal categories-Bacteria ,Archaea ,andEukarya (sometimes spelled Eucarya)-whichhe called domains.
4
In all trees we observe a sharp discrimination between the three primary domains of life: Bacteria, Archaea, and Eukarya.
5
Archaea and Bacteria constitute a majority of life systems on Earth but have long been considered inferior to Eukarya in terms of solute tolerance.
6
Architectural proteins play an important role in compacting and organizing the chromosomal DNA in all three kingdoms of life (Eukarya, Bacteria and Archaea).