A positive transcription elongation factor complex that comprises the CDK kinase CTK1 (in budding yeast), Lsk1 (in fission yeast) (corresponding to the Panther PTHR24056:SF39 family), a cyclin and an additional gamma subunit (corresponding to the InterPRO entry IPR024638).
Synonyms:
narrow_synonym:
CTDK-I complex; Ctk complex
related_synonym:
C-terminal domain kinase I complex; trimeric positive transcription elongation factor complex b