Fig. 6From: Well-positioned nucleosomes punctuate polycistronic pol II transcription units and flank silent VSG gene arrays in Trypanosoma brucei Model of nucleosomal organization at pol II-transcribed PTUs in T. brucei. Schematic representation of the average nucleosomal architecture and underlying DNA sequence positioning signals of T. brucei in a 400-bp window centered on (a) the first SAS of a PTU, representing the nucleosomal organization around the putative pol II TSS, (b) the internal SASs, and (c) the polyadenylation siteBack to article page