Final answer:
Serine proteases and aspartic proteases are different types of proteases that act on specific substrates. Serine proteases target proteins with serine residues, while aspartic proteases act on proteins with aspartic acid residues. They play essential roles in protein digestion and cellular processes.
Step-by-step explanation:
Serine proteases and aspartic proteases are two different types of proteases that act on specific substrates. Serine proteases target proteins with serine residues, while aspartic proteases act on proteins with aspartic acid residues. Serine proteases include trypsin and aminopeptidase, which cleave peptide bonds contributed by lysine/arginine and amino end, respectively. Aspartic proteases, such as carboxypeptidase, specifically target proteins with free carboxylic groups. Both types of proteases play essential roles in protein digestion and cellular processes.