Figure 1.

A, Alignment of the protein sequences derived from the Arabidopsis p-pmsr and c-pmsr genes, showing the presence of an N-terminal plastidial targeting sequence in the p-pmsr. B, Genomic organization of the Arabidopsis p-pmsr and c-pmsr genes characterized in this study. Exons and introns are indicated by black and white boxes, respectively. The hatched box in the first p-pmsr exon indicates the coding region for the cleavable plastidial targeting sequence. The p-pmsr gene is located within the oleosin gene promoter as in B. napus (Sadanandom et al., 1996).