| Identifier | Protein names | Gene names | Cross reference refseq | Length | Species |
| Q08562 | ATP-dependent helicase ULS1; EC 3.6.4.-; Role in silencing protein 1; Ubiquitin ligase for SUMO conjugates protein 1; | ULS1; DIS1 RIS1 TID4; YOR191W; | NP_014834.1; | 1619 | yeast |
| Q03010 | Transcriptional regulatory protein UME1; WD repeat-containing transcriptional modulator 3; | UME1; WTM3; YPL139C; | NP_015186.1; | 460 | yeast |
| P39001 | Transcriptional regulatory protein UME6; Negative transcriptional regulator of IME2; Regulator of inducer of meiosis protein 16; Unscheduled meiotic gene expression protein 6; | UME6; CAR80 CARGR1 NIM2 RIM16; YDR207C; | NP_010493.1; | 836 | yeast |
| P38293 | Proteasome maturation factor UMP1; | UMP1; YBR173C; | NP_009732.1; | 148 | yeast |
| P12887 | Uracil-DNA glycosylase; UDG; EC 3.2.2.27; | UNG1; YML021C; | NP_013691.1; | 359 | yeast |
| Q12151 | Sterol uptake control protein 2; Mannoprotein regulation by oxygen protein 4; | UPC2; MOX4; YDR213W; | NP_010499.1; | 913 | yeast |
| P48412 | Nonsense-mediated mRNA decay protein 3; Up-frameshift suppressor 3; | UPF3; SUA6; YGR072W; | NP_011586.1; | 387 | yeast |
| Q12063 | Dehydrodolichyl diphosphate syntase complex subunit NUS1; EC 2.5.1.87; Di-trans,poly-cis-decaprenylcistransferase; Nuclear undecaprenyl pyrophosphate synthase 1; Undecaprenyl diphosphate synthase; UDS; | NUS1; YDL193W; | NP_010088.1; | 375 | yeast |
| P18562 | Uracil phosphoribosyltransferase; UPRTase; EC 2.4.2.9; UMP pyrophosphorylase; | FUR1; YHR128W; | NP_011996.2; | 216 | yeast |
| Q05776 | Protein UPS1, mitochondrial; Unprocessed MGM1 protein 1; | UPS1; YLR193C; | NP_013294.1; | 175 | yeast |
| P35200 | Protein UPS2, mitochondrial; Altered inheritance rate of mitochondrion protein 30; Genetic interactor of prohibitins protein 1; Unprocessed MGM1 protein 2; | UPS2; AIM30 GEP1 MSF1; YLR168C; | NP_013269.1; | 230 | yeast |
| Q04006 | Protein UPS3, mitochondrial; Genetic interactor of prohibitins protein 2; Unprocessed MGM1 protein 3; | UPS3; GEP2; YDR185C; | NP_010471.1; | 179 | yeast |
| P28274 | CTP synthase 1; EC 6.3.4.2; CTP synthetase 1; UTP--ammonia ligase 1; | URA7; YBL039C; | NP_009514.1; | 579 | yeast |
| P38627 | CTP synthase 2; EC 6.3.4.2; CTP synthetase 2; UTP--ammonia ligase 2; | URA8; YJR103W; | NP_012637.4; | 578 | yeast |
| P34241 | Nucleolar pre-ribosomal-associated protein 1; Unhealthy ribosome biogenesis protein 1; | URB1; NPA1; YKL014C; | NP_012911.3; | 1764 | yeast |
| P47108 | Nucleolar pre-ribosomal-associated protein 2; Unhealthy ribosome biogenesis protein 2; | URB2; NPA2; YJR041C; | NP_012575.3; | 1174 | yeast |
| Q04411 | Uracil catabolism protein 2; | URC2; YDR520C; | NP_010808.3; | 772 | yeast |
| P23202 | Transcriptional regulator URE2; Disulfide reductase; EC 1.8.4.-; Glutathione peroxidase; EC 1.11.1.9; | URE2; YNL229C; | NP_014170.1; | 354 | yeast |
| Q04179 | Uridine nucleosidase; EC 3.2.2.3; Uridine ribohydrolase; | URH1; YDR400W; | NP_010688.4; | 340 | yeast |
| P27515 | Uridine kinase; EC 2.7.1.48; Uridine monophosphokinase; | URK1; YNR012W; | NP_014409.1; | 501 | yeast |
