Figure 1.

Functions of prokaryotic amyloids in the interspecies interactions. Dots denote monomeric proteins, striated lines denote amyloid fibrils, and monomer-to-amyloid conversion is shown as a thin arrow. Thick arrows represent different types of interspecies interactions: red for Type I (host–pathogen), blue for Type II (interactions within microbial community), and green for Type III (host–symbiont). MTP—Mycobacterium tuberculosis pili; LLO—listeriolysin O; OMPs—outer membrane proteins; PSMs—phenol-soluble modulins.