Table 2.

Amyloidogenic proteins and peptides from microbial organisms. The indicated organism or family must not be imperatively the only organism producing the respective peptide or protein but was used in the underlying investigation. (nn: not known so far).

Name of Organism/Family	B = Bacterial F = Fungal V = Viral	Name of Peptide or Protein	Function	Reference
B. burgdorferi	B	Peptide designed from outer surface protein A (Osp)A	nn	[63]
E. coli	B	RNA binding protein Hfq	Interaction with biological membranes, potentially export of RNA	[64]
E. coli	B	MinE	Interaction with biological membranes, lipid redistribution	[65,66]
E. coli	B	Hydrogenase maturation factor HypF (HypF-N)	Permeabilization of membranes	[67]
Enterobacteriaceae	B	CsgB	Biofilm formation	[47,68]
Gallibacterium anatis *	B	Elongation factor-Tu (EF-Tu)	Adhesion-like function	[69]
Mannheimia haemolytica	B	Amyloid-like protein (ALP)	Cell adhesion, biofilm formation	[70]
Mycobacterium tuberculosis	B	Early secreted antigen 6-kDa protein (ESAT-6)	Potentially pore-formation	[71,72]
Pseudomonas aeruginosa	B	Functional Amyloid in Pseudomonas (Fap) C	Strengthening of biofilms	[73,74]
S. aureus	B	Phenol soluble modulins (PSMs)	Resistance of biofilms to various dispersion agents	[75]
S. aureus	B	N-terminal leader fragment of accessory gene regulatory (Agr) D	Seeding the amyloid polymerization of PSM peptides (in vitro)	[76]
S. epidermidis	B	C-repeat of Biofilm associated protein (Bap)	Potentially bacteria-bacteria-adhesion	[77]
C. albicans	F	Agglutinin-like sequence family 3 (Als3)	nn	[78]
Saccharomyces cerevisiae	F	glucantransferase Bgl2	Assumed cell protection against oxidative stress	[79]
Avibirnavirus infectious bursal disease virus (IBDV)	V	Viral protease VP4	Reduction of cytotoxicity of protease activity in host cells	[62]
Coronavirus	V	Peptide C6	nn	[80]

* Pathogenic in chicken.