Figure 9.

Schematic representation of the genes encoding characterized and putative type I/II PIPkins from Arabidopsis. The introns and exons for AtPIP5K1, AtPIP5K5, AtPIP5K7, and AtPIP5K8 were determined by comparing the mRNA and gene sequences, whereas for the other genes, they were deduced by comparison with the four known gene structures and examination of the exon-intron splice junctions. The regions coding for the different conserved domains are indicated by double arrows. Dim, Dimerization domain.