Figure 4.

URS1 consensus sequence derived from alignment of GGCGGC hexamer sequences in the promoters (+200 to −600 upstream) of the 82 direct core genes. The previously described consensus (3) is in bold, and has been extended to include additional flanking nucleotides present at a frequency (indicated below the consensus) of at least 50% higher than the average frequency for that nucleotide in the genome (≈20% for G and C, ≈30% for A and T). The most common nucleotide in each position is shaded.