Frequency of motifs in up-regulated promoters.

Values are percent of genes containing the indicated motifs within 500-nt of the start codon. For the two classes of motifs, induced genes (I) are defined as having 5-fold or higher mRNA levels in sporangia relative to hyphae, or in germinated cysts relative to zoospores. Non-induced genes were those having mRNA levels that did not change or were down-regulated during the transition. Motifs were not included if they were over-represented in constitutive promoters.