Table 1.
Amino acid composition of I. oros and S. foetidus collagen filaments compared with collagen from skin of codfish and commercial rat collagen (per 1000 residues).
| Amino Acid | I.oros | S. foetidus | Rat * | Codfish * |
|---|---|---|---|---|
| Ala+Arg | 152 | 157 | 153.4 | 121.93 |
| Aspartic acid | 100.03 | 78.83 | 45.32 | 38.82 |
| Glutamic acid | 111.90 | 114.27 | 73.33 | 56.08 |
| Glycine | 359.00 | 385.46 | 333.18 | 266.12 |
| Histidine | 0.96 | 1.34 | 3.61 | 5.01 |
| Hydroxylysine | 13.91 | 14.26 | 9.33 | 6.65 |
| Hydroxyproline | 69.29 | 61.53 | 96.09 | 39.6 |
| Isoleucine | 8.57 | 5.62 | 7.48 | 5.61 |
| Leucine | 23.19 | 18.96 | 23.29 | 6.51 |
| Lysine | 13.80 | 12.00 | 27.07 | 19.62 |
| Methionine | 1.64 | 1.80 | 8.03 | 15.04 |
| Phenylalanine | 13.31 | 10.42 | 14.62 | 12.7 |
| Proline | 57.06 | 43.56 | 109.21 | 62.69 |
| Serine | 41.65 | 61.28 | 42.74 | 53.87 |
| Threonine | 18.53 | 18.66 | 18.79 | 16.89 |
| Tyrosine | 4.99 | 5.17 | 3.76 | 2.25 |
| Valine | 10.59 | 10.18 | 17.08 | 12.02 |
* Value obtained from [36].