Distribution of conserved motifs in the Hsf family members. All motifs were identified by MEME using the complete amino acid sequences of 71 maize, rice and Arabidopsis Hsf genes documented in Figure 5. Names of all members among the defined gene clusters and combined P-values are shown on the left side of the figure and motif sizes are indicated at the bottom of the figure. Different motifs are indicated by different colors numbered 1-30. The same number in different proteins refers to the same motif with the exception of motif 15 in AtHsf-04. Because AtHsf-04 exhibits two boxes of motif 15, the box near the N-terminal represents NLS and the box close to the C-terminal specifies AHA. For details of motifs refer to Table 3.