Figure 1.

Peptides overview: The figure summarises the main aspects related to peptides: origin, classes and applications. As can be observed, although having some industrial applications [19,20], synthetic peptides are also used as antigens in diagnosing diseases [21,22], studying molecular interactions [23], and identifying pathogens proteins’ functional regions [24,25,26]. However; it is worth highlighting their scope in the vast field of therapeutic applications [27,28,29,30,31,32,33,34].