Collagen

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5 Terms

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Collagen residues that occur in smaller amounts

3-hydroxylprolyl, 5-hydroxylysyl

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Main collagen residues

Glycine (33%), Proline and 4 hydroxylprolyl (15-30%)

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Prolyl Hydoxylase

converts proline resides to prolyl residues needed in collagen, requires vitamin C for its activity

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Scurvy

a result of vitamin C deficiency causing newly synthesized collagen to not form fibers properly

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Enzymatic pathway

lysyl oxidase catalyzes deoxidation of lysine to form allysine; 2 allysines undergo aldol condensation to form allysine aldol; allysine aldol reacts with histidine to form aldol histidine; aldol histidine can react with 5 hydroxylase to form a schiff base crosslinking four side chains