Fig. 2From: Bio-informatic analysis of CRISPR protospacer adjacent motifs (PAMs) in T4 genomePAM’s motifs distribution in each of the three types of promoters: 40 early (A), 33 middle (B), and 50 late (C). Sixty bases were scanned for each promoter upstream of the transcription start site (which is given the coordinate 0). The 60 bases of a promoter were categorized into six segments represented by stacked bars of different colors. Y axis represents PAM’s count numberBack to article page