Amino-acid expressed maximally in collagen?: (A) Tyrosine & phenylalanine, (B) Alanine & aspaic acid, (C) Glycine & cysteine, (D) Proline & hydroxyproline
Answer is D. Ans. is `d' i.e., Proline & hydroxyprolineGlycine (33%), proline (10%), hydroxyproline, lysine and hydroxylysine are the predominant amino acids in collagen. Collagen.