| Chain | GOid | namespace | contents |
| A | 0000447 | biological_process | endonucleolytic cleavage in ITS1 to separate SSU-rRNA from 5.8S rRNA and LSU-rRNA from tricistronic rRNA transcript (SSU-rRNA, 5.8S rRNA, LSU-rRNA) |
| A | 0000472 | biological_process | endonucleolytic cleavage to generate mature 5'-end of SSU-rRNA from (SSU-rRNA, 5.8S rRNA, LSU-rRNA) |
| A | 0000480 | biological_process | endonucleolytic cleavage in 5'-ETS of tricistronic rRNA transcript (SSU-rRNA, 5.8S rRNA, LSU-rRNA) |
| A | 0005515 | molecular_function | protein binding |
| A | 0005634 | cellular_component | nucleus |
| A | 0005654 | cellular_component | nucleoplasm |
| A | 0005730 | cellular_component | nucleolus |
| A | 0005737 | cellular_component | cytoplasm |
| A | 0005880 | cellular_component | nuclear microtubule |
| A | 0006364 | biological_process | rRNA processing |
| A | 0008168 | molecular_function | methyltransferase activity |
| A | 0019843 | molecular_function | rRNA binding |
| A | 0030490 | biological_process | maturation of SSU-rRNA |
| A | 0030686 | cellular_component | 90S preribosome |
| A | 0031167 | biological_process | rRNA methylation |
| A | 0032040 | cellular_component | small-subunit processome |
| A | 0032259 | biological_process | methylation |
| A | 0034399 | cellular_component | nuclear periphery |
| A | 0042254 | biological_process | ribosome biogenesis |
| A | 0042274 | biological_process | ribosomal small subunit biogenesis |
| A | 0042802 | molecular_function | identical protein binding |
| A | 0070037 | molecular_function | rRNA (pseudouridine) methyltransferase activity |
| A | 0070475 | biological_process | rRNA base methylation |
| A | 1990904 | cellular_component | ribonucleoprotein complex |
