Table 6.

The set of proteins analyzed in the present work, together with their short characteristics.

PDB ID	Characteristics	Biological Function	Criterion of Qualification	Reference
4UR4	66 aa	Antifreeze type III	High solubility	[25]
6JK4	126 aa	Type II		[26]
4UR6	64 aa—dimer	Type III	Dimer	[25]
1C8A	134 aa—two domains	Type III	Two domains	[27]
1Y7Q	Dimer	C-terminal domain (CTD) of the capsid protein	P–P interaction	[28]
2CO2	Domain swapping	Outer membrane protein	Domain swapping	[29]
3CRF	Domain swapping	Outer membrane protein	Domain swapping	[30]
1A3N	Complex + ligand binding	Hemoglobin	Quaternary structure ligand	[31]
4QDS	Domain in interface	Cell adhesion	Domain in interface	[32]
2PIL	Unit in IV pilus	Pilus	A unit of a multi-molecular complex	[33]
1HPW	Globular part IV pilus	IV pilus	Globular part	[34]
3J1R	Filaments N-terminal type IV pilin helices	Type IV pilin	Channel’s elements	[35]
5VXY	Pilin	Channel for genetic material transport	Fibril structure of 21 chains with a channel transporting molecules	[36]