The aggregation, arrangement and bonding together of proteins and RNA molecules to form a 90S preribosome. The 90S preribosome represents the complex that forms on the primary rRNA transcript before it splits into the small subunit and large subunit portions. [ GOC:tb GOC:mah GOC:krc ]
Term information
Term relations
- protein-RNA complex assembly
- part of some ribosomal large subunit assembly
- part of some ribosomal small subunit assembly