Members of this family are components of the RNA polymerase II associated Paf1 complex. The Paf1 complex functions during the elongation phase of transcription in conjunction with Spt4-Spt5 and Spt16-Pob3i [1,2].

1: The Paf1 complex physically and functionally associates with transcription elongation factors in vivo. Squazzo SL, Costa PJ, Lindstrom DL, Kumer KE, Simic R, Jennings JL, Link AJ, Arndt KM, Hartzog GA; EMBO J 2002;21:1764-1774. PMID:11927560

2: Ctr9, Rtf1, and Leo1 are components of the Paf1/RNA polymerase II complex. Mueller CL, Jaehning JA; Mol Cell Biol 2002;22:1971-1980. PMID:11884586