Amide linkages in proteins

Protease Hydrolysis of amide linkages in proteins and peptides... 

Historically, the amide linkages in proteins are also known as peptide linkages. Depending on the number of peptide links per molecule or degree of polymerization and molar mass, a distinction is made between the actual proteins with molar masses above 10 000 g/mol and the polypeptides with molar masses below about 10 000 g/mol. In contrast to polypeptides and proteins, poly(a-amino acids) are not copolymers, but homopolymers. 

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