Table 2.
Amino acid composition of CSGHs (number of residues/1000 residues).
| Amino acids | CSG | A26-CSGH | NH1-CSGH | A21-CSGH | Alcalase-CSGH |
|---|---|---|---|---|---|
| Asxa | 63 | 62 | 61 | 62.5 | 60 |
| Thrb | 23 | 22 | 24.6 | 22.4 | 22 |
| Ser | 49 | 45 | 44 | 42.3 | 40.7 |
| Glxa | 92 | 98 | 96.4 | 97.4 | 89.4 |
| Gly | 321 | 320 | 316 | 317 | 318 |
| Ala | 81 | 87.3 | 85.4 | 98.6 | 97.4 |
| Valb | 22 | 12 | 13.6 | 13.5 | 12.1 |
| Metb | 6 | 6.3 | 6.4 | 6.9 | 7.1 |
| Ileb | 22 | 22.6 | 23.4 | 22.1 | 23.1 |
| Leub | 29 | 19.7 | 20.4 | 18.7 | 20 |
| Try | 5 | 5.9 | 6.2 | 6.1 | 5.8 |
| Pheb | 10 | 9.6 | 9.9 | 9.3 | 9.4 |
| Hisb | 18 | 15 | 14 | 14 | 17 |
| Lysb | 13 | 32 | 34 | 33 | 32 |
| Arg | 51 | 53.6 | 52.7 | 51.2 | 52 |
| Cys | 0 | 0 | 0 | 0 | 0 |
| Pro | 96 | 92 | 94 | 90 | 98 |
| Hyp | 84 | 97 | 98 | 95 | 96 |
| TAAc | 1000 | 1000 | 1000 | 1000 | 1000 |
| THAAc | 587.0 | 569.5 | 569.1 | 576.1 | 585.1 |
| TEAA/TAA (%)c | 14.3 | 13.92 | 14.63 | 13.99 | 14.27 |
aThe aspartic and glutamic acid contents include, respectively, asparagines and glutamine, Asx = Asp + Asn; Glx = Glu + Gln.
bEssential amino acids.
cTAA = total amino acids; THAA = total hydrophobic amino acids; TEAA = total essential amino acids.