A transcription elongation factor complex that suppresses RNA polymerase II pausing, and may act by promoting proper alignment of the 3'-end of nascent transcripts with the polymerase catalytic site. Consists of a transcriptionally active Elongin A subunit (about 100 kDa) and two smaller Elongin B (about 18 kDa) and Elongin C (about 15 kDa) subunits.
Source:PMID:12676794
Comment
See also the cellular component terms 'cyclin-dependent protein kinase activating kinase holoenzyme complex ; GO:0019907' and 'DNA-directed RNA polymerase II, holoenzyme ; GO:0016591'.