The paper “Characterization of the human transcription elongation factor Rtf1: evidence for non-overlapping Characterization of the human transcription elongation factor Rtf1: evidence for non-overlapping functions of Rtf1 and the Paf1 complex” was accepted for publication in Molecular Cellular Biology and a preliminary version was posted on the web on July 27, 2012. The first author of the paper, Qingfu Cao, is a former graduate student in our lab. For more detail, please read the original paper.