FB2025_05 , released December 11, 2025
FB2025_05 , released December 11, 2025
CV Term Report
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General Information
Term nuclear speck ID (Ontology) GO:0016607 (Gene Ontology)
Definition A discrete extra-nucleolar subnuclear domain, 20-50 in number, in which splicing factors are seen to be localized by immunofluorescence microscopy.[ PubMed:28977640 ]
Also Known As "nuclear speckle" ; "nuclear speckles" ; "splicing speckle"
Comment
Links to External Ontologies
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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_CELLULAR_COMPONENT      31
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 Full annotation statements 
Relevant FlyBase reports
 Genes
 nuclear speck (all annotations which use CV term, excluding "NOT" statements)      31
     is_active_in | nuclear speck      18
     located_in | nuclear speck      15
Spanning Tree (Parents/Children)
Only view relationship: 
nuclear body_______________
ribonucleoprotein granule__|
                           nuclear ribonucleoprotein granule
                            |__nuclear speck  35 rec.
                                |__omega speckle 5 rec.
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Is a nuclear ribonucleoprotein granule
Part of
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Synonyms
  • "nuclear speckle" EXACT
    "nuclear speckles" EXACT
    "speckle domain" NARROW
    "speckle focus" RELATED
    "splicing speckle" EXACT
Secondary IDs
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