Amino acid homology of WRI1 homologs. Comparison of WRI homologs from Arabidopsis (AtWRI1, 3, and 4), poplar stem (PtWRI1ca), potato embryo (StWRI1em), oat endosperm (AsWRI1es), nutsedge tuber parenchyma (CeWRI1tp), and tobacco (NbWRI1) in regions spanning the two AP2/EREBP DNA-binding domains. Black means identical, shaded means similarity. Homology is measured as compared to Arabidopsis WRI1 sequence. (JPEG 236Â kb)