| Identifier | Protein names | Gene names | Cross reference refseq | Length | Species |
| Q9Y115 | UNC93-like protein; | NULL | NP_573179.1;NP_728035.1; | 538 | fruit fly |
| O77215 | Homeobox protein unc-4; Paired-like homeodomain protein unc-4; DPHD-1; | unc-4; | NP_001285389.1;NP_573242.2; | 428 | fruit fly |
| Q9VHN5 | Protein unc-50 homolog; Uncoordinated-like protein; | NULL | NP_649813.1; | 275 | fruit fly |
| Q95TU8 | Netrin receptor unc-5; Unc5 netrin receptor; | unc-5; | NP_001286450.1;NP_611033.2; | 1072 | fruit fly |
| Q9VB11 | Protein unc-80 homolog; | NULL | NP_651577.4; | 3295 | fruit fly |
| Q86B79 | RING finger protein unkempt; | unk; | NP_001247253.1;NP_001247255.1;NP_788722.1;NP_788723.1; | 599 | fruit fly |
| Q4V5A3 | Homeobox protein unplugged; | unpg; unp; | NP_477146.1; | 485 | fruit fly |
| P16163 | Uricase; EC 1.7.3.3; Urate oxidase; | Uro; UO; | NP_476779.1; | 352 | fruit fly |
| Q7KU86 | Ubiquitin-related modifier 1 homolog; | NULL | NP_996018.2; | 101 | fruit fly |
| Q95YI5 | UDP-sugar transporter UST74c; Protein fringe connection; | frc; UST74C; | NP_001137962.1;NP_524126.1; | 373 | fruit fly |
| Q9VHB3 | U6 snRNA phosphodiesterase; EC 3.1.4.-; | NULL | NP_649911.1; | 258 | fruit fly |
| Q9VSU7 | Vesicle transport protein USE1; USE1-like protein; | Use1; | NP_648289.2; | 250 | fruit fly |
| Q9VPQ6 | Zinc finger protein ush; Protein U-shaped; | ush; | NP_476780.1; | 1191 | fruit fly |
| P20153 | Protein ultraspiracle; Chorion factor 1; Nuclear receptor subfamily 2 group B member 4; XR2C; | usp; Cf1 NR2B4; | NP_001259168.1;NP_476781.1; | 508 | fruit fly |
| Q9W3C0 | Probable U3 small nucleolar RNA-associated protein 11; U3 snoRNA-associated protein 11; | NULL | NP_572504.1; | 237 | fruit fly |
| Q9V7P1 | U3 small nucleolar RNA-associated protein 18 homolog; Protein wicked; WD repeat protein l(2)k07824; | wcd; l(2)k07824; | NP_611121.1; | 506 | fruit fly |
| Q9VK07 | UV radiation resistance-associated gene protein; UV-resistance associated gene; | Uvrag; | NP_609632.1; | 696 | fruit fly |
| P10379 | Protein unzipped; Protein zipper; | uzip; zip; | NP_001286875.1;NP_523861.1; | 488 | fruit fly |
| Q9W4P5 | V-type proton ATPase subunit d 1; V-ATPase subunit d 1; V-ATPase 39 kDa subunit; Vacuolar H+ ATPase subunit AC39-1; Vacuolar proton pump subunit d 1; | VhaAC39-1; VhaAC39; | NP_570080.1; | 350 | fruit fly |
| Q9VCQ3 | Probable V-type proton ATPase subunit d 2; V-ATPase subunit d 2; Vacuolar H+ ATPase subunit AC39-2; Vacuolar proton pump subunit d 2; | VhaAC39-2; | NP_651128.1; | 350 | fruit fly |
