Comment on

• The yeast Rat1 exonuclease promotes transcription termination by RNA polymerase II.

  Kim M, Krogan NJ, Vasiljeva L, Rando OJ, Nedea E, Greenblatt JF, Buratowski S. Kim M, et al. Nature. 2004 Nov 25;432(7016):517-22. doi: 10.1038/nature03041. Nature. 2004. PMID: 15565157
• Human 5' --> 3' exonuclease Xrn2 promotes transcription termination at co-transcriptional cleavage sites.

  West S, Gromak N, Proudfoot NJ. West S, et al. Nature. 2004 Nov 25;432(7016):522-5. doi: 10.1038/nature03035. Nature. 2004. PMID: 15565158
• Autocatalytic RNA cleavage in the human beta-globin pre-mRNA promotes transcription termination.

  Teixeira A, Tahiri-Alaoui A, West S, Thomas B, Ramadass A, Martianov I, Dye M, James W, Proudfoot NJ, Akoulitchev A. Teixeira A, et al. Nature. 2004 Nov 25;432(7016):526-30. doi: 10.1038/nature03032. Nature. 2004. PMID: 15565159