Amino acid abundant in collagen:
Correct Answer: Glycine
Description: Ans. A Glycine* Collagen is rich in glycine and proline amino acid.* Glycine is the smallest amino acid, present in every third position of chain, therefore it fits into the spaces where the three chains of helix comes together.* This repeating structure, represented as (Gly-X-Y) n, is an absolute requirement for the formation of the triple helix. While X and Y can be any other amino acid, about 100 of the X positions are proline and about 100 of the Y positions are hydroxyproline. Proline and hydroxyproline confer rigidity on the collagen molecule.
Category:
Biochemistry
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