| No. | DFBP ID | AA sequence | Peptide/Function name | Organism/Source | Precursor protein | PubDate |
| 1 | DFBPOPIO0112 | VYPFPGPI | Opioid peptide, [Val59]-Casomorphin-7 [3] | Bovine milk protein | β-Casein | 1979 |
| 2 | DFBPOPIO0113 | VYPFPGPI | Opioid peptide, [Val59]-Casomorphin-7 [3] | Ovine milk protein | β-Casein | 1979 |
| 3 | DFBPOPIO0114 | VYPFPGPI | Opioid peptide, [Val59]-Casomorphin-7 [3] | Buffalo milk protein | β-Casein | 1979 |