Table 1.
Bovine milk-derived peptides identified in breast milk samples. M*= oxidized methionine
| Peptide sequence | Protein of origin (position) | Uniprot protein ID | Number of times identified | Mothers on milk-free diet (N=6) | Milk-drinking mothers (N=6) |
|---|---|---|---|---|---|
| GLKSRSKKF | Osteopontin (159-167) | P31096 | 5 | 1 | 4 |
| YGLKSRSKKF | Osteopontin (158-167) | P31096 | 1 | - | 1 |
| VAPGALLGLGNLTHLSLKYNNLTEVPRRLPPSLDTL | Toll-like receptor 9 (189-224) | Q5I2M5 | 3 | 1 | 2 |
| VAPGALLGLGNLTHLSLKYNNLTEVPRRLPPSLDT | Toll-like receptor 9 (189-223) | Q5I2M5 | 1 | - | 1 |
| YVEELKPTPEGDL | β-lactoglobulin (42-54) | P02754 | 2 | - | 2 |
| YVEELKPTPEGDLEIL | β-lactoglobulin (42-57) | P02754 | 1 | - | 1 |
| RCLQATLTQDSTYGNEDCLYLNIWVPQGR | Bile salt-activated lipase (81-109) | P30122 | 1 | 1 | - |
| SDIPNPIGSENSEKTTM*PLW | αs1-casein (180-197) | P02662 | 1 | - | 1 |
| ASVAVEPQLSVVTRVANLPLVS | Perilipin-2 (2-23) | Q9TUM6 | 1 | 1 | - |
| AKDTVTCVGHIIGA | Xanthine dehydrogenase/oxidase (656-669) | P80457 | 1 | - | 1 |
| YPNLCQLCKGEGENQ | Lactotransferrin (185-199) | P24627 | 1 | - | 1 |