Serine proteases are enzymes that catalyze peptide bond hydrolysis through a shared active-site architecture called the catalytic triad (serine, histidine, aspartic acid), whose members are brought into spatial proximity by protein folding despite being distant in primary sequence. Substrate specificity arises from a binding region called the S1 pocket, which selectively recognizes particular protein sequences, while catalysis proceeds through electronic changes triggered by substrate binding that generate a highly reactive nucleophile capable of attacking the peptide bond's carbonyl carbon. This belongs to enzymology within biochemistry, illustrating general principles of enzyme mechanism including induced fit, nucleophilic catalysis, and transition-state stabilization.
Serine proteases are enzymes that catalyze peptide bond hydrolysis through a shared active-site architecture called the catalytic triad (serine, histidine, aspartic acid), whose members are brought i…