Figure 2.
TATA and CCAAT box occurrence profiles for three classes of promoter entry. The DBTSS and MGC subsets were derived by in silico primer extension. The definitions of the sequence motifs were taken from (2). The TATA and CCAAT box signals were searched for in sliding windows of 20 and 50 bp, respectively. Theses profiles have been produced with the Signal search analysis server (14).