BIOMOLECULES AND ENZYMES

Detailed explanation-1: -Sulphur-containing amino acids include methionine, cysteine, homocysteine, and taurine. Methionine and cysteine are classified as proteinogenic, canonic amino acids incorporated in protein structure.

Detailed explanation-2: -Methionine and cysteine are the two primary sulfur-containing amino acids in mammals.

Detailed explanation-3: -Methionine and Cysteine Cysteine plays an important structural role in proteins and is a major constituent of hair. Cysteine is also the precursor for glutathione, a major antioxidant in mammalian systems and a precursor for the synthesis of felinine.