FB2026_03 , released September 17, 2026

CV Term Report

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General Information

Term

cyclin/CDK positive transcription elongation factor complex

ID (Ontology)

GO:0008024 (Gene Ontology)

Definition

A transcription elongation factor complex that facilitates the transition from abortive to productive elongation by phosphorylating the CTD domain of the large subunit of DNA-directed RNA polymerase II, holoenzyme. Contains a cyclin and a cyclin-dependent protein kinase catalytic subunit.[ PubMed:10766736 PubMed:16721054 PubMed:17079683 PubMed:19328067 PubMed:7759473 ]

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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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
cyclin/CDK positive transcription elongation factor complex (all annotations which use CV term, excluding "NOT" statements)
part_of \| cyclin/CDK positive transcription elongation factor complex

Spanning Tree (Parents/Children)

cyclin-dependent protein kinase holoenzyme complex
 |__nuclear cyclin-dependent protein kinase holoenzyme complex__
nucleoplasm                                                     |
 |__transcription elongation factor complex_____________________|
nuclear protein-containing complex                              |
 |__transcription elongation factor complex_____________________|
 |__nuclear cyclin-dependent protein kinase holoenzyme complex__|
 |__carboxy-terminal domain protein kinase complex______________|
serine/threonine protein kinase complex                         |
 |__carboxy-terminal domain protein kinase complex______________|
                                                                cyclin/CDK positive transcription elongation factor complex  5 rec.
                                                                 |__CTDK-1 complex
                                                                 |__P-TEFb complex 3 rec.

Spanning Tree View Settings
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Relationships
Is a	transcription elongation factor complex nuclear cyclin-dependent protein kinase holoenzyme complex carboxy-terminal domain protein kinase complex
Part of
Synonyms & Secondary IDs
Synonyms
	"positive transcription elongation factor complex b" RELATED
Secondary IDs

External Crossreferences & Linkouts