Table 2.
Amino acid composition of the skin, bone and muscle collagen of leather jacket
| Amino acids | Residues/1,000 total residues | ||
|---|---|---|---|
| Skin collagen | Bone collagen | Muscle collagen | |
| Hydroxyproline | 71.1 | 87.2 | 88.2 |
| Aspartic acid | 55.2 | 51.5 | 56.8 |
| Threonine | 29.4 | 24.7 | 24.2 |
| Serine | 34.3 | 29.6 | 28.6 |
| Glutamic acid | 45.3 | 35.8 | 36.3 |
| Proline | 90.3 | 103.1 | 102.2 |
| Glycine | 354.9 | 356.8 | 352.0 |
| Alanine | 95.9 | 95.1 | 94.9 |
| Valine | 12.3 | 12.1 | 12.3 |
| Methionine | 7.0 | 11.2 | 10.9 |
| Isoleucine | 12.8 | 11.5 | 11.6 |
| Leucine | 20.8 | 17.2 | 18.1 |
| Tyrosine | 26.5 | 24.1 | 24.7 |
| Phenylalanine | 28.7 | 25.8 | 25.2 |
| Histidine | 7.5 | 10.5 | 10.6 |
| Lysine | 56.0 | 52.8 | 51.4 |
| Arginine | 52.0 | 51.0 | 52.0 |
| Total | 1,000 | 1,000 | 1,000 |
| Imino acids | 161.4 | 190.3 | 190.4 |