Figure 1.

uORF arrangement in 5′ leader regions of SAC51 family mRNAs in Arabidopsis. Boxes represent uORFs. Overlapped but different reading frames are shown in different rows. The uORFs classified as a homology group 15⁶ and those in the same reading frame as them are shaded in light and dark gray, respectively. Arrowheads and arrows indicate positions of introns and the start codon of the main ORF, respectively. SACL3 I and II indicate alternatively spliced forms of the mRNA.