| Identifier | Protein names | Gene names | Cross reference refseq | Length | Species |
| U3IV28 | Uncharacterized protein; Fragment; | PINX1; | NULL | 98 | mallard |
| U3I0U0 | Uncharacterized protein; Fragment; | NULL | NULL | 71 | mallard |
| U3I1L4 | Uncharacterized protein; Fragment; | CCDC166; | NULL | 201 | mallard |
| U3J551 | Uncharacterized protein; | PKN2; | NULL | 394 | mallard |
| U3I3M0 | Uncharacterized protein; | IMPG1; | NULL | 935 | mallard |
| U3I3I6 | Uncharacterized protein; Fragment; | TMEM41B; | NULL | 254 | mallard |
| U3IN41 | Small ubiquitin-related modifier; SUMO; | SUMO1; | XP_005016923.1; | 102 | mallard |
| U3IZ50 | Uncharacterized protein; Fragment; | HCN4; | NULL | 713 | mallard |
| U3I3Y4 | Uncharacterized protein; Fragment; | MLF2; | NULL | 243 | mallard |
| U3J250 | Uncharacterized protein; | GLYR1; | NULL | 553 | mallard |
| U3IKN2 | Uncharacterized protein; | ELF1; | NULL | 625 | mallard |
| U3I634 | Uncharacterized protein; Fragment; | MRPL37; | NULL | 319 | mallard |
| U3I3U9 | Uncharacterized protein; Fragment; | NULL | NULL | 352 | mallard |
| U3IMS0 | Uncharacterized protein; Fragment; | NDUFS3; | NULL | 220 | mallard |
| U3I4W2 | Uncharacterized protein; | PROZ; | XP_005022005.1; | 407 | mallard |
| U3I4Q0 | Uncharacterized protein; Fragment; | SYCP2L; | NULL | 794 | mallard |
| U3I7U3 | Uncharacterized protein; | CCDC134; | NULL | 230 | mallard |
| U3J1P7 | Uncharacterized protein; | TNFRSF8; | NULL | 469 | mallard |
| U3I7J1 | Uncharacterized protein; Fragment; | NULL | NULL | 98 | mallard |
| U3I9A0 | Uncharacterized protein; Fragment; | SMPD2; | NULL | 150 | mallard |
