Answer:
a. Bromelain comprises various subunits of proteolytic enzymes, that is, sulfhydryl proteases.
b. Bromelain performs the role of dissociating the enzymes into simpler molecules. Bromelain refers to a proteolytic enzyme that performs the role of dissociating the enzymes that are deleterious by the activity of a free sulfhydryl group present on the cysteine side chain. The dissociation of the enzymes is done by hydrolyzing the peptide linkage.
A nucleophilic residue produced by the cysteine acts on the enzyme and gives rise to a covalent complex. After this hydrolyzation of the complex is done by water, which eventually dissociates the peptide linkage of the deleterious enzyme. Due to the dissociation of the peptide bond, the enzyme finally gets dissociated into smaller molecules, and recovery of bromelain is done.