| Identifier | Protein names | Gene names | Cross reference refseq | Length | Species |
| Q8MKL1 | UPF0598 protein CG30010; | NULL | NP_001260836.1;NP_724847.1; | 167 | fruit fly |
| Q7JRP4 | UPF0605 protein CG18335; | NULL | NP_610666.1; | 323 | fruit fly |
| Q9VNI3 | UPF0609 protein CG1218; | NULL | NP_649589.1; | 449 | fruit fly |
| Q9VCE8 | UPF0692 protein CG33108; | NULL | NP_788728.1; | 267 | fruit fly |
| O97172 | UPF0729 protein CG18508; | NULL | NP_001284836.1;NP_652721.1; | 99 | fruit fly |
| Q9V6U8 | Nedd8-activating enzyme E1 catalytic subunit; EC 6.3.2.-; Ubiquitin-activating enzyme 3 homolog; | Uba3; | NP_610913.1; | 450 | fruit fly |
| Q9VYY3 | Ubiquitin-like modifier-activating enzyme 5; Ubiquitin-activating enzyme 5; | NULL | NP_572722.2; | 404 | fruit fly |
| Q9VSF3 | Nedd8-conjugating enzyme Ubc12; EC 6.3.2.-; Nedd8 carrier protein; Nedd8 protein ligase; | Ubc12; | NP_001261567.1;NP_001261568.1;NP_648187.1; | 181 | fruit fly |
| P52487 | Ubiquitin-conjugating enzyme E2-18 kDa; EC 6.3.2.19; Ubiquitin carrier protein; Ubiquitin-protein ligase; | Ubc84D; | NP_524260.1; | 153 | fruit fly |
| P25867 | Ubiquitin-conjugating enzyme E2-17 kDa; EC 6.3.2.19; Protein effete; Ubiquitin carrier protein; Ubiquitin-protein ligase; | eff; UbcD1; | NP_001262578.1;NP_001262579.1;NP_731941.1; | 147 | fruit fly |
| P52485 | Ubiquitin-conjugating enzyme E2-24 kDa; EC 6.3.2.19; Ubiquitin carrier protein; Ubiquitin-protein ligase; | UbcD2; | NP_001260362.1;NP_001285814.1;NP_477137.1;NP_723616.1; | 232 | fruit fly |
| P52486 | Ubiquitin-conjugating enzyme E2-22 kDa; EC 6.3.2.19; Ubiquitin carrier protein; Ubiquitin-protein ligase; | UbcD4; | NP_001287013.1;NP_001287014.1;NP_524010.2; | 199 | fruit fly |
| P25153 | Ubiquitin-conjugating enzyme E2-17 kDa; EC 6.3.2.19; Ubiquitin carrier protein; Ubiquitin-protein ligase; | UbcD6; Dhr6; | NP_001246916.1;NP_524230.2; | 151 | fruit fly |
| Q9VTY6 | Ubiquitin-conjugating enzyme E2 C; EC 6.3.2.19; Ubiquitin carrier protein C; Ubiquitin carrier protein vihar; Ubiquitin-protein ligase C; | vih; Ubch10; | NP_648582.1; | 178 | fruit fly |
| P35128 | Ubiquitin-conjugating enzyme E2 N; EC 6.3.2.19; Protein bendless; Ubiquitin carrier protein N; Ubiquitin-conjugating enzyme E2-17 kDa; Ubiquitin-protein ligase D3; Ubiquitin-protein ligase N; | ben; UbcD3; | NP_001162752.1;NP_001245663.1;NP_001259540.1;NP_001259541.1;NP_511150.1; | 151 | fruit fly |
| Q9VX25 | Ubiquitin-conjugating enzyme E2 S; EC 6.3.2.19; Ubiquitin carrier protein S; Ubiquitin-protein ligase S; | NULL | NP_001033852.1;NP_001285383.1;NP_001285384.1;NP_573237.2; | 209 | fruit fly |
| Q9V3R8 | UbiA prenyltransferase domain-containing protein 1 homolog; EC 2.5.1.-; Protein heixuedian; | heix; | NP_523581.1; | 359 | fruit fly |
| P0CG69 | Polyubiquitin; [Cleaved into: Ubiquitin]; | Ubi-p63E; Ubi-m; | NP_001261383.1;NP_523909.2;NP_728908.1;NP_995994.1; | 763 | fruit fly |
| Q9V998 | Ubiquitin-like protein 5; | ubl; l(2)k03203; | NP_610239.1; | 73 | fruit fly |
| Q9W462 | Ubiquitin carboxyl-terminal hydrolase 30 homolog; dUSP30; EC 3.4.19.12; Deubiquitinating enzyme 30 homolog; Ubiquitin thioesterase 30 homolog; Ubiquitin-specific-processing protease 30 homolog; Ub-specific protease 30 homolog; | NULL | NP_001284912.1;NP_572274.1; | 558 | fruit fly |
