FB2025_05 , released December 11, 2025
FB2025_05 , released December 11, 2025
CV Term Report
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General Information
Term rDNA heterochromatin formation ID (Ontology) GO:0000183 (Gene Ontology)
Definition The formation of heterochromatin at ribosomal DNA, characterized by the modified histone H3K9me3.[ PubMed:10219245 ]
Also Known As "rDNA heterochromatin assembly"
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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Records annotated with this exact term (annotations to child terms are NOT included)
Data Class Field Records
Genes (FBgn)  GO_BIOLOGICAL_PROCESS       2
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 Full annotation statements 
Relevant FlyBase reports
 Genes
 rDNA heterochromatin formation (all annotations which use CV term, excluding "NOT" statements)       2
     involved_in | rDNA heterochromatin formation       2
Spanning Tree (Parents/Children)
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chromatin organization
 |__nucleolar chromatin organization_______
nucleolus organization                     |
 |__nucleolar chromatin organization_______|
heterochromatin formation                  |
 |__facultative heterochromatin formation__|
                                           rDNA heterochromatin formation  2 rec.
                                            |__regulation of rDNA heterochromatin formation
                                                |__negative regulation of rDNA heterochromatin formation
                                                |__positive regulation of rDNA heterochromatin formation
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Is a facultative heterochromatin formation
Part of nucleolar chromatin organization
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Synonyms
  • "chromatin silencing at rDNA" RELATED
    "chromatin silencing at ribosomal DNA" BROAD
    "heterochromatic silencing at rDNA" BROAD
    "rDNA chromatin silencing" BROAD
    "rDNA heterochromatin assembly" EXACT
Secondary IDs
hide External Crossreferences & Linkouts
Reactome:R-HSA-427359 "SIRT1 negatively regulates rRNA expression"
Reactome:R-HSA-427413 "NoRC negatively regulates rRNA expression"