| GO | Name |
| GO:0000472 | endonucleolytic cleavage to generate mature 5'-end of SSU-rRNA from (SSU-rRNA, 5.8S rRNA, LSU-rRNA) |
| GO:0000480 | endonucleolytic cleavage in 5'-ETS of tricistronic rRNA transcript (SSU-rRNA, 5.8S rRNA, LSU-rRNA) |
| GO:0003723 | RNA binding |
| GO:0005654 | nucleoplasm |
| GO:0005730 | nucleolus |
| GO:0006364 | rRNA processing |
| GO:0030686 | 90S preribosome |
| GO:0032040 | small-subunit processome |
| GO:0034511 | U3 snoRNA binding |