part of transcription elongation factor complex RNA polymerase II, holoenzyme Cdc73/Paf1 complex A multiprotein complex that associates with RNA polymerase II and general RNA polymerase II transcription factor complexes and may be involved in both transcriptional initiation and elongation. In Saccharomyces the complex contains Paf1p, Cdc73p, Ctr9p, Rtf1p, and Leo1p. Paf1p complex Paf1 complex GO:0016593 cellular_component