Figure 3.

Alignment of the 3′-UTRs of monocot OsRacB orthologs demonstrates an extraordinarily long CNS block. Nucleotides that are identical in all five species (wheat-Ta, rice-Os, barley-Hv, sorghum-Sb, and maize-Zm) are highlighted in black. Numbering begins at the stop codon (TGA) in each gene; according to available cDNA sequences, the poly(A) tail is added immediately following the final base pair in the alignment, except in HvRacB, whose poly(A) tail addition site is 50 bp further downstream. The HvRacB 3′-UTR is from a full-length PlantGDB TUC identified using the incomplete HvRacB sequence in GenBank.