Figure 2.

Composition of bacteria-derived exosomes. Proteomic, Biochemical, and Immunological investigations have identified many specific proteins and RNAs present in some exosomes. This is a limited representation of common molecules present within some bacteria-derived exosomes. Molecules illustrated here are grouped based on category function or protein class: Tetraspanins, Surface markers, Immunoregulator molecules, Mycobacteria proteins, Mycobacteria lipids, Toxins or virulence factors, DNA encoding genes, and RNAs. Some of these molecules are also found in protozoan derived-exosomes (Figure 3) and mammalian derived-exosomes (Figure 1).