FB2026_02 , released June 18, 2026

CV Term Report

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General Information

Term

90S preribosome

ID (Ontology)

GO:0030686 (Gene Ontology)

Definition

A large ribonucleoprotein complex considered to be the earliest preribosomal complex. In S. cerevisiae, it has a size of 90S and consists of the 35S pre-rRNA, early-associating ribosomal proteins most of which are part of the small ribosomal subunit, the U3 snoRNA and associated proteins.[ PubMed:12150911 PubMed:12957375 PubMed:15120992 ]

Comment

Links to External Ontologies

QuickGO data AmiGO data

Annotations

Records annotated with this term OR any of its CHILD TERMS

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Direct annotations: records annotated with this exact term (child terms are NOT included)

Data Class	Field	Direct annotations
Genes (FBgn)	GO_CELLULAR_COMPONENT

Full annotation statements including this term (annotations to child terms are NOT included), and relevant FlyBase records

Full annotation statements	Relevant FlyBase reports
Full annotation statements	Genes
90S preribosome (all annotations which use CV term, excluding "NOT" statements)
part_of \| 90S preribosome

Spanning Tree (Parents/Children)

  ribonucleoprotein complex
   |__preribosome
       |__90S preribosome  28 rec.
           |__Mpp10 complex 3 rec.
           |__Noc1p-Noc2p complex 2 rec.
           |__Noc4p-Nop14p complex 2 rec.
           |__PeBoW complex 3 rec.
           |__Pwp2p-containing subcomplex of 90S preribosome 5 rec.
           |__UTP-C complex 2 rec.

Spanning Tree View Settings
Parents/Children View Depth	Show hierarchy levels: for parents, for children
Relationships
Is a	preribosome
Part of
Synonyms & Secondary IDs
Synonyms

Secondary IDs

External Crossreferences & Linkouts