| No. | DFBP ID | AA sequence | Peptide/Function name | Organism/Source | Precursor protein | PubDate |
| 1 | DFBPOPIO0011 | YPFPGPI | Opioid peptide, β-Casomorphin-7 | Cheese (Cheddar, Swiss, Brie, Limburger, Blue), Bovine milk protein [2,3] | β-Casein | 1979 |
| No other studies with the same sequence were reported. | ||||||