| Identifier | Protein names | Gene names | Cross reference refseq | Length | Species |
| P08067 | Cytochrome b-c1 complex subunit Rieske, mitochondrial; EC 1.10.2.2; Complex III subunit 5; Rieske iron-sulfur protein; RISP; Ubiquinol-cytochrome c reductase iron-sulfur subunit; | RIP1; YEL024W; | NP_010890.3; | 215 | yeast |
| P53044 | Ubiquitin fusion degradation protein 1; UB fusion protein 1; Polymerase-interacting protein 3; | UFD1; PIP3; YGR048W; | NP_011562.1; | 361 | yeast |
| P54860 | E4 ubiquitin-protein ligase UFD2; EC 6.3.2.-; Ubiquitin conjugation factor E4; Ubiquitin fusion degradation protein 2; UB fusion protein 2; | UFD2; YDL190C; | NP_010091.2; | 961 | yeast |
| P33202 | Ubiquitin fusion degradation protein 4; UB fusion protein 4; | UFD4; YKL010C; | NP_012915.3; | 1483 | yeast |
| P41834 | Syntaxin UFE1; | UFE1; YOR075W; | NP_014718.1; | 346 | yeast |
| Q04511 | Ubiquitin ligase complex F-box protein UFO1; | UFO1; YML088W; | NP_013622.1; | 668 | yeast |
| P38067 | Succinate-semialdehyde dehydrogenase [NADP(+)]; SSDH; EC 1.2.1.16; | UGA2; UGA5; YBR006W; | NP_009560.1; | 497 | yeast |
| P26370 | Transcriptional activator protein UGA3; | UGA3; YDL170W; | NP_010111.1; | 528 | yeast |
| P32837 | GABA-specific permease; GABA-specific transport protein; | UGA4; YDL210W; | NP_010071.1; | 571 | yeast |
| Q03327 | Mitochondrial fusion and transport protein UGO1; | UGO1; YDR470C; | NP_010758.3; | 502 | yeast |
| P32861 | UTP--glucose-1-phosphate uridylyltransferase; EC 2.7.7.9; UDP-glucose pyrophosphorylase; UDPGP; UGPase; | UGP1; YKL035W; | NP_012889.3; | 499 | yeast |
| P38709 | Probable UTP--glucose-1-phosphate uridylyltransferase; EC 2.7.7.9; UDP-glucose pyrophosphorylase; UDPGP; UGPase; | YHL012W; | NP_011851.1; | 493 | yeast |
| P32772 | Protein UGX2; | UGX2; YDL169C; | NP_010112.1; | 223 | yeast |
| P39547 | ULP1-interacting protein 3; DUP240 protein UIP3; | UIP3; YAR027W; | NP_009414.1; | 235 | yeast |
| Q08926 | ULP1-interacting protein 4; | UIP4; YPL186C; | NP_015138.1; | 304 | yeast |
| P36137 | Protein UIP5; ULP1-interacting protein 5; | UIP5; YKR044W; | NP_012970.3; | 443 | yeast |
| Q12059 | NEDD8-activating enzyme E1 regulatory subunit; E1 N-terminus-related protein 2; Ubiquitin-activating enzyme E1-like 1; Ubiquitin-like activation protein 1; | ULA1; ENR2; YPL003W; | NP_015322.1; | 462 | yeast |
| P43604 | Unfolded protein response-inducible protein 1; UPR-L-inducible protein 1; | ULI1; YFR026C; | NP_116682.3; | 169 | yeast |
| Q02724 | Ubiquitin-like-specific protease 1; EC 3.4.22.68; | ULP1; YPL020C; | NP_015305.1; | 621 | yeast |
| P40537 | Ubiquitin-like-specific protease 2; EC 3.4.22.68; | ULP2; SMT4; YIL031W; | NP_012233.1; | 1034 | yeast |
