FB2025_05 , released December 11, 2025
FB2025_05 , released December 11, 2025
CV Term Report
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General Information
Term heterochromatin ID (Ontology) GO:0000792 (Gene Ontology)
Definition A compact and highly condensed form of chromatin that is refractory to transcription.[ PubMed:32017156 ]
Also Known As "transcriptionally inactive chromatin" ; "transcriptionally silent chromatin"
Comment
Links to External Ontologies
  QuickGO data     AmiGO data
Annotations
Records annotated with this term OR any of its CHILD TERMS
    Results list data from multiple species. Click on a button above and use the 'Filter by species' options on the resulting HitList to retrieve species-specific data.
Records annotated with this exact term (annotations to child terms are NOT included)
Data Class Field Records
Alleles (FBal)  PHENOTYPE_MANIFEST_IN       2
Genes (FBgn)  GO_CELLULAR_COMPONENT      43
show Full annotation statements including this term (annotations to child terms are NOT included), and relevant FlyBase records
 Full annotation statements 
Relevant FlyBase reports
 Alleles Genes
 heterochromatin (all annotations which use CV term, excluding "NOT" statements)       2     43
     colocalizes_with | heterochromatin       --       4
     heterochromatin | maternal effect       3       --
     located_in | heterochromatin       --      40
Spanning Tree (Parents/Children)
Only view relationship: 
chromosome_____________________
cellular anatomical structure__|
                               chromatin
                                |__heterochromatin  66 rec.
                                    |__heterochromatin domain
                                    |__heterochromatin island
                                    |__intercalary heterochromatin 7 rec.
                                    |__mating-type region heterochromatin
                                    |__pericentric heterochromatin 29 rec.
                                    |   |__alpha-heterochromatin 2 rec.
                                    |   |__beta-heterochromatin 2 rec.
                                    |__rDNA heterochromatin 2 rec.
                                    |__RITS complex
                                    |__senescence-associated heterochromatin focus
                                    |__sex chromatin
                                    |   |__condensed chromatin of inactivated sex chromosome
                                    |__subtelomeric heterochromatin
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Synonyms
  • "nuclear heterochromatin" NARROW
    "transcriptionally inactive chromatin" EXACT
    "transcriptionally silent chromatin" EXACT
Secondary IDs
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NIF_Subcellular:sao581845896
Wikipedia:Heterochromatin