FB2026_03 , released September 17, 2026
FB2026_03 , released September 17, 2026
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"
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Direct annotations: records annotated with this exact term (child terms are NOT included)
Data ClassFieldDirect annotations
Alleles (FBal)PHENOTYPE_MANIFEST_IN
Genes (FBgn)GO_CELLULAR_COMPONENT
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 Full annotation statements 
Relevant FlyBase reports
 Alleles Genes
 heterochromatin (all annotations which use CV term, excluding "NOT" statements)
     colocalizes_with | heterochromatin       --
     heterochromatin | maternal effect
      --
     is_active_in | heterochromatin       --
     located_in | heterochromatin       --
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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