| Identifier | Protein names | Gene names | Cross reference refseq | Length | Species |
| P34162 | Mediator of RNA polymerase II transcription subunit 20; Hyper-recombination suppressor protein 2; Mediator complex subunit 20; Suppressor of RNA polymerase B 2; | SRB2; HRS2 MED20; YHR041C; | NP_011907.1; | 210 | yeast |
| P47822 | Mediator of RNA polymerase II transcription subunit 21; Mediator complex subunit 21; RNAPII complex component SRB7; Suppressor of RNA polymerase B 7; | SRB7; MED21; YDR308C; | NP_010594.3; | 140 | yeast |
| P32570 | Mediator of RNA polymerase II transcription subunit 22; Mediator complex subunit 22; Suppressor of RNA polymerase B 6; | SRB6; MED22; YBR253W; | NP_009812.1; | 121 | yeast |
| Q12124 | Mediator of RNA polymerase II transcription subunit 2; Mediator complex subunit 2; | MED2; YDL005C; | NP_010279.3; | 431 | yeast |
| P38633 | Mediator of RNA polymerase II transcription subunit 31; Hpr1 suppressor protein 1; Mediator complex subunit 31; | SOH1; MED31; YGL127C; | NP_011388.1; | 127 | yeast |
| P40356 | Mediator of RNA polymerase II transcription subunit 3; Hyper-recombination suppressor protein 1; Mediator complex subunit 3; Poly-glutamine domain protein 1; | PGD1; HRS1 MED3; YGL025C; | NP_011490.2; | 397 | yeast |
| Q12343 | Mediator of RNA polymerase II transcription subunit 4; Mediator complex subunit 4; | MED4; YOR174W; | NP_014817.3; | 284 | yeast |
| P53114 | Mediator of RNA polymerase II transcription subunit 5; Mediator complex subunit 5; Negative regulator of URS2 protein 1; | NUT1; MED5; YGL151W; | NP_011364.1; | 1132 | yeast |
| P38782 | Mediator of RNA polymerase II transcription subunit 6; Mediator complex subunit 6; | MED6; MTR32; YHR058C; | NP_011925.1; | 295 | yeast |
| Q08278 | Mediator of RNA polymerase II transcription subunit 7; Mediator complex subunit 7; | MED7; YOL135C; | NP_014506.1; | 222 | yeast |
| P38304 | Mediator of RNA polymerase II transcription subunit 8; Mediator complex subunit 8; | MED8; YBR193C; | NP_009752.3; | 223 | yeast |
| P33308 | Mediator of RNA polymerase II transcription subunit 9; Chromosome segregation protein 2; Mediator complex subunit 9; | CSE2; MED9; YNR010W; | NP_014407.3; | 149 | yeast |
| Q02205 | Protein MEH1; EGO complex subunit 1; GSE complex subunit 2; | MEH1; EGO1 GSE2; YKR007W; | NP_012932.1; | 184 | yeast |
| P29467 | Meiosis-specific protein MEI4; | MEI4; YER044C-A; | NP_010963.1; | 408 | yeast |
| P32489 | Meiosis protein 5; | MEI5; YPL121C; | NP_015204.1; | 222 | yeast |
| P24719 | Meiosis-specific serine/threonine-protein kinase MEK1; EC 2.7.11.1; | MEK1; MRE4; YOR351C; | NP_014996.3; | 497 | yeast |
| P40260 | Ammonium transporter MEP1; | MEP1; AMT1; YGR121C; | NP_011636.3; | 492 | yeast |
| P41948 | Ammonium transporter MEP2; | MEP2; AMT2; YNL142W; | NP_014257.1; | 499 | yeast |
| P53390 | Ammonium transporter MEP3; | MEP3; AMT3; YPR138C; | NP_015464.1; | 489 | yeast |
| P16523 | Meiotic recombination 1 protein; | MER1; YNL210W; | NP_014189.1; | 270 | yeast |
