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What is Most abundant in bone - and explain in detail?
Most abundant protein in bones is collagen. Collagen is formed from glycine proline lysine Proline and lysine are hydroxylated to make OH-proline and OH-lysine. Now, you have to choose between option 2 and 3. As most of the proline in collagen is hydroxyated so best out of these two options is hydroxyproline. Extra information: OH-proline cause extensive hydrogen bonding and hence collagen provide strength to the bones.