Table 2.
Collagen peptide identification from tissue digestion samples.
| Col type | # tryp + # semitryp | # nontryp | # Gxx-G | |
|---|---|---|---|---|
| Col-V | α1 | 2, 0 | 0 | 2 |
| α2 | 4, 0 | 0 | 3 | |
|
| ||||
| Col-IV | α1 | 1, 2 | 3 | 2 |
| α2 | 1, 1 | 1 | 1 | |
|
| ||||
| Col-VI | α1 | 5, 8 | 0 | 0 |
| α2 | 9, 1 | 1 | 0 | |
| α3 | 3, 2 | 1 | 0 | |
# tryp, # semitryp, and # nontryp indicate the number of tryptic peptides (R/K)↓xxx⋯xxx(R/K)↓xxx⋯, number of semitryptic peptides (R/K)↓xxx⋯ or ⋯xxx(R/K)↓xxx⋯, and number of nontryptic peptides, respectively.
The total number of detected peptides is shown by # tryp + # semitryp + # nontryp.
# Gxx-G can be shared in # tryp, # semitryp, and # nontryp.
Database searches for porcine collagens were based on the following NCBI accession numbers: α1(V): 62461592; α2(V): 157427707; α1(IV): 927191681; α2(IV): 927191683; α1(VI): 92020086, 92020094, and 545895133; α2(VI): 927203606; α3(VI): 92020131 and 927211912.