Table 1.
Examples of placeholding situations during the ribosome biogenesis pathway.
1 A question mark indicates that the placeholder correspondence or the mutually exclusive interaction is suspected and has not been experimentally addressed.
| Factor | Counterpart 1 | Reference |
| Ribosomal-like proteins | ||
| Mrt4 | Mex67, P0 (uL10) | 20 45 46 |
| Rlp24 | L24 (eL24) | 28 |
| Trans-acting factors | ||
| Arx1 | EBP1, RAC, NAC, Ssb1/2, Sec61 complex | 69 70 |
| Bms1 | Tsr1 (?) | 95 99 |
| Dbp10 | Nmd3 | 118 |
| Dim2 | Krr1 (?) | 189 |
| Efl1 | EF-2 (Eft1/Eft2), Tif6 | 19 116 |
| Nmd3 | eIF5A | 43 114 |
| Nog1 | Rei1 | 40 |
| Nog2/Nug2 | Nmd3 | 40 115 |
| Nsa2 | Nmd3 | 40 |
| Nug1 | Nmd3 | 118 |
| Rei1 | Reh1 | 43 68 |
| Sdo1 | Nmd3 | 114 116 |
| Tsr1 | eIF5B, Rio1 | 21 102 |
| Dedicated chaperones and escortins | ||
| Acl4 | L4 (uL4) | 149 153 154 |
| Bcp1 | L23 (uL14) | 173 |
| Fap7 | S14 (uS11) | 171 184 185 |
| Rrb1 | L3 (uL3) | 152 157 158 |
| Sqt1 | L10 (uL16) | 152 162 |
| Syo1 | L5 (uL18), L11 (uL5) | 144 163 |
| Tsr2 | S26 (eS26) | 143 170 171 |
| Yar1 | S3 (uS3) | 150 152 174 178 179 |
| Box H/ACA snoRNP assembly factors | ||
| Naf1 | Gar1 | 188 |
| Shq1 | H/ACA snoRNA | 186 187 |