| Identifier | Protein names | Gene names | Cross reference refseq | Length | Species |
| U3IER4 | Uncharacterized protein; | SPARC; | NULL | 299 | mallard |
| U3ICU6 | Uncharacterized protein; Fragment; | TMEM213; | NULL | 119 | mallard |
| U3ILY2 | Acyl-CoA-binding protein; Fragment; | DBI; | NULL | 46 | mallard |
| U3IAN0 | Uncharacterized protein; | PRR35; | NULL | 898 | mallard |
| U3IIE7 | Uncharacterized protein; Fragment; | ZNF469; | NULL | 3510 | mallard |
| U3INY5 | Uncharacterized protein; Fragment; | NULL | NULL | 1173 | mallard |
| U3IM88 | Uncharacterized protein; Fragment; | EIF1; | NULL | 49 | mallard |
| U3IM75 | Uncharacterized protein; Fragment; | USH2A; | NULL | 4229 | mallard |
| U3IFQ4 | Uncharacterized protein; Fragment; | MMP28; | NULL | 443 | mallard |
| U3IQB1 | Uncharacterized protein; | RIBC2; | XP_005010118.1; | 381 | mallard |
| U3IIT9 | Amino acid transporter; | SLC1A3; | NULL | 543 | mallard |
| U3IQ48 | Uncharacterized protein; Fragment; | GPR107; | NULL | 532 | mallard |
| U3IA51 | Uncharacterized protein; Fragment; | LOC101800726; | NULL | 442 | mallard |
| U3IRU0 | Uncharacterized protein; Fragment; | UROD; | NULL | 331 | mallard |
| U3ISK4 | Uncharacterized protein; Fragment; | MBD5; | NULL | 1755 | mallard |
| U3IT42 | Uncharacterized protein; | CCDC149; | NULL | 445 | mallard |
| U3IJA7 | Uncharacterized protein; | NULL | NULL | 77 | mallard |
| U3IPE4 | Uncharacterized protein; | SEMA6D; | NULL | 1078 | mallard |
| U3IQK2 | Uncharacterized protein; Fragment; | POLR2D; | NULL | 128 | mallard |
| U3IWA6 | Uncharacterized protein; Fragment; | HAAO; | NULL | 288 | mallard |
