Characterization of ribosomal protein (RP) gene promoters. (A) TSS distributions and polypyrimidine tracts of RP gene promoters. The TSS distributions of the Rpsa and Rplp1 promoters are shown as examples. The nucleotides at the corresponding positions, including polypyrimidine tracts, are also shown. (B) Polypyrimidine initiator of RP gene promoters. The sequences from −10 to +9 of the 79 RP gene promoters were aligned relative to the representative TSS. The TSSs reported by Perry (2005) were used as the representative TSSs of human RP gene promoters. (C) Distribution of the A+T content of RP gene promoters. The A+T content was calculated by using a 10-bp sliding window. TATA+ and TATA− represent TATA-containing and TATA-less RP gene promoters, respectively.
