| Identifier | Protein names | Gene names | Cross reference refseq | Length | Species | 
| Q9W720 | Mitochondrial uncoupling protein 2; UCP 2; Solute carrier family 25 member 8; | ucp2; slc25a8; | NULL | 310 | zebrafish | 
| Q6DBY5 | Ubiquitin-conjugating enzyme E2 variant 3; UEV-3; EV and lactate/malate dehydrogenase domain-containing protein; | uevld; uev3; | NP_001003619.1 | 471 | zebrafish | 
| Q6DEN0 | Ubiquitin-fold modifier-conjugating enzyme 1; Ufm1-conjugating enzyme 1; | ufc1; | NP_001003650.1 | 166 | zebrafish | 
| Q6PGY6 | E3 UFM1-protein ligase 1; EC 6.3.2.-; | ufl1; | NP_956900.1 | 793 | zebrafish | 
| Q803Y4 | Ubiquitin-fold modifier 1; | ufm1; ubfm1; | NP_997792.1 | 90 | zebrafish | 
| Q7T347 | Ufm1-specific protease 2; UfSP2; EC 3.4.22.-; | ufsp2; | NP_942105.1 | 401 | zebrafish | 
| E7EZF3 | E3 ubiquitin-protein ligase UHRF1; EC 6.3.2.-; Ubiquitin-like PHD and RING finger domain-containing protein 1; Ubiquitin-like-containing PHD and RING finger domains protein 1; | uhrf1; | NP_998242.1 | 776 | zebrafish | 
| Q7SXP2 | NEDD8-activating enzyme E1 regulatory subunit; APP-BP1; Amyloid protein-binding protein 1; | nae1; appbp1; | NP_956793.1 | 533 | zebrafish | 
| Q6DGE9 | Protein unc-45 homolog B; Unc-45B; UNC45-related protein; | unc45b; unc45r; | NP_705959.1 | 934 | zebrafish | 
| Q5SPF7 | Protein unc-93 homolog A; Unc-93A; | unc93a; | NP_001038381.1 | 465 | zebrafish | 
| Q50D79 | Homeobox protein unc-4 homolog; Homeobox protein Uncx4.1; | uncx; uncx4.1; | NP_001018616.2 | 470 | zebrafish | 
| Q7ZUU1 | Protein unc-50 homolog; | unc50; | NP_956541.1 | 259 | zebrafish | 
| Q6NYU7 | Uracil phosphoribosyltransferase homolog; | uprt; | NP_996974.1 | 257 | zebrafish | 
| Q6PBU7 | Ubiquinol-cytochrome-c reductase complex assembly factor 2; Mitochondrial nucleoid factor 1; Mitochondrial protein M19; | uqcc2; mnf1; | NP_957052.1 | 129 | zebrafish | 
| B3DFP2 | Ubiquinol-cytochrome-c reductase complex assembly factor 3; | uqcc3; | NP_001189365.1 | 78 | zebrafish | 
| A1L259 | 2-oxo-4-hydroxy-4-carboxy-5-ureidoimidazoline decarboxylase; OHCU decarboxylase; EC 4.1.1.97; Parahox neighbor; Ureidoimidazoline (2-oxo-4-hydroxy-4-carboxy-5-) decarboxylase; | urad; prhoxnb; | NP_001073641.1 | 174 | zebrafish | 
| Q6DEF6 | U6 snRNA phosphodiesterase; EC 3.1.4.-; | usb1; | NP_001003460.1 | 276 | zebrafish | 
| Q7ZTY7 | Vesicle transport protein USE1; USE1-like protein; | use1; use1l; | NP_956618.1 | 258 | zebrafish | 
| Q6DRC5 | SUMO-specific isopeptidase USPL1; EC 3.4.22.-; Ubiquitin-specific peptidase-like protein 1; | uspl1; | NP_001003880.1 | 1014 | zebrafish | 
| Q7ZW33 | U3 small nucleolar RNA-associated protein 15 homolog; | utp15; NP_955998.1; | XP_005159039.1 | 517 | zebrafish | 
