| Identifier | Protein names | Gene names | Cross reference refseq | Length | Species |
| U3I9V7 | Uridine phosphorylase; EC 2.4.2.3; Fragment; | UPP2; | NULL | 323 | mallard |
| U3IF33 | Uncharacterized protein; Fragment; | GATAD2A; | NULL | 542 | mallard |
| U3I182 | Uncharacterized protein; | ZBED4; | XP_005020899.1;XP_005020900.1; | 1172 | mallard |
| U3IRW1 | Uncharacterized protein; Fragment; | NULL | NULL | 290 | mallard |
| U3INE9 | Uncharacterized protein; Fragment; | NULL | NULL | 497 | mallard |
| U3IN38 | Uncharacterized protein; Fragment; | R3HDML; | NULL | 202 | mallard |
| U3ILU0 | 40S ribosomal protein S12; Fragment; | RPS12; | NULL | 132 | mallard |
| U3IMS8 | Uncharacterized protein; Fragment; | LOC101792983; | NULL | 381 | mallard |
| U3IT70 | Uncharacterized protein; Fragment; | NULL | NULL | 40 | mallard |
| U3IS58 | Uncharacterized protein; Fragment; | DHTKD1; | NULL | 886 | mallard |
| U3IFM3 | Uncharacterized protein; Fragment; | DPP7; | NULL | 470 | mallard |
| U3ITU0 | Uncharacterized protein; Fragment; | LOC101792784; | NULL | 445 | mallard |
| U3IZ84 | Uncharacterized protein; Fragment; | ZNF503; | NULL | 204 | mallard |
| U3IV35 | Uncharacterized protein; | LOC101797468; | NULL | 471 | mallard |
| U3IZL0 | Uncharacterized protein; Fragment; | IL1RAPL2; | NULL | 687 | mallard |
| U3IA67 | Uncharacterized protein; Fragment; | VCP; | NULL | 808 | mallard |
| U3IWZ2 | Uncharacterized protein; Fragment; | LOC101800733; | NULL | 1880 | mallard |
| U3IQ71 | Uncharacterized protein; | SLC43A2; | NULL | 569 | mallard |
| U3J4F8 | Uncharacterized protein; Fragment; | EVA1A; | NULL | 152 | mallard |
| U3J152 | Uncharacterized protein; Fragment; | ARMC9; | NULL | 814 | mallard |
