... December 2 010 , revised 10 February 2 011 , accepted 5 April 2 011 )doi :10 .11 11/ j .17 42-4658.2 011 .0 812 8.xChromatin is by its very nature a repressive environment which restricts therecruitment of transcription ... ini-tiation of transcription elongation [13 7].The initiation and elongating phases of the tran-scription cycle are characterized by distinct sets of his-tone and Pol II modifications [19 ,15 1]. Followingpromoter ... H3S10ph and H4K16ac generates a histonecode that mediates transcription elongation. Cell 13 8 , 11 22 11 36. 15 4 Carrozza MJ, Li B, Florens L, Suganuma T, SwansonSK, Lee KK, Shia WJ, Anderson...