Cellular compartment

Other compartments such as peroxisomes, lysosomes, the endoplasmic reticulum, the cell nucleus or the Golgi apparatus are not of endosymbiotic origin.

One is to establish physical boundaries for biological processes that enables the cell to carry out different metabolic activities at the same time.

Likewise, intracellular compartmentalization allows specific sites of related eukaryotic cell functions isolated from other processes and therefore efficient.

Mans et al.[5] proposed that the evolutionary development of the eukaryotic cell nucleus was triggered by this archaeo-bacterial symbiosis.

The nuclear envelope (membrane), a defining characteristic of the eukaryotic cell, was suggested to have arisen as an adaptation for segregating the original archaeal host DNA genome away from the proto-mitochondria, the main source of damaging reactive oxygen species.