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| Amino acid | Weight (%) |
|---|---|
| Glycine | 22.2 |
| Proline | 12.7 |
| Hydroxyproline | 11.9 |
| Glutamic acid | 10.2 |
| Alanine | 8.6 |
| Arginine | 7.3 |
| Aspartic acid | 5.8 |
| Serine | 3.2 |
| Leucine | 2.7 |
| Valine | 2.4 |
| Phenylalanine | 2.1 |
| Threonine | 1.8 |
| Hydroxylysine | 1.6 |
| Isoleucine | 1.4 |
| Histidine | 1.0 |
| Methionine | 0.9 |
| Tyrosine | 0.8 |
