Asymmetric RNA localisation can be achieved by different mechanisms, such as active transport of RNAs by motor proteins moving
on cytoskeletal elements, local protection of RNAs from degradation, facilitated diffusion and trapping.
Although none of these organisms has yet been isolated, observed under the microscope nor cultured, these genome sequences provide us with an unprecedented opportunity to explore the origins of these
cytoskeletal elements and promise to shed light
on the evolutionary transition that led to the emergence of eukaryotes.