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How many lysine residues become aldehydes in the Schiff base crosslink? How many hydrogen atoms are...

How many lysine residues become aldehydes in the Schiff base crosslink?

How many hydrogen atoms are on a proline nitrogen atom at pH = 7 when the proline nitrogen forms a pepetde bond with another amino acid?

What fraction of the amino acids in the collagen peptide are glycine?

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