Comment on

• Structure and function of the transcription elongation factor GreB bound to bacterial RNA polymerase.

  Opalka N, Chlenov M, Chacon P, Rice WJ, Wriggers W, Darst SA. Opalka N, et al. Cell. 2003 Aug 8;114(3):335-45. doi: 10.1016/s0092-8674(03)00600-7. Cell. 2003. PMID: 12914698
• Architecture of the RNA polymerase II-TFIIS complex and implications for mRNA cleavage.

  Kettenberger H, Armache KJ, Cramer P. Kettenberger H, et al. Cell. 2003 Aug 8;114(3):347-57. doi: 10.1016/s0092-8674(03)00598-1. Cell. 2003. PMID: 12914699