FB2026_02 , released June 18, 2026

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

QuickGO data AmiGO data

Annotations

Records annotated with this term OR any of its CHILD TERMS

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Results list data from multiple species. Choose a record type above to open its HitList.

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
nuclear speck (all annotations which use CV term, excluding "NOT" statements)
is_active_in \| nuclear speck
located_in \| nuclear speck

Spanning Tree (Parents/Children)

nuclear body_______________
ribonucleoprotein granule__|
                           nuclear ribonucleoprotein granule
                            |__nuclear speck  25 rec.
                                |__omega speckle 5 rec.

Spanning Tree View Settings
Parents/Children View Depth	Show hierarchy levels: for parents, for children
Relationships
Is a	nuclear ribonucleoprotein granule
Part of
Synonyms & Secondary IDs
Synonyms
	"nuclear speckle" EXACT "nuclear speckles" EXACT "speckle domain" NARROW "speckle focus" RELATED "splicing speckle" EXACT
Secondary IDs

External Crossreferences & Linkouts