Fig. 1

Genome organization of the AtPUB46, AtPUB47 and AtPub48 genes and the proteins they encode. a Genome organization of Arabidopsis chromosome 5 loci At5G18320, AtG18330, and At5G18340 that encode the AtPUB46, AtPUB47, and AtPUB48 genes, respectively. Exons are shown as wide and introns as narrow lines. Arrows mark gene orientation. b Amino acid sequence alignment and domain structure of AtPUB46, AtPUB47, and AtPUB48: blue (positivly charged), red (negatively charged), green (polar) and orange (non-polar) residues. U-box is shown in a blue frame, ARM motifs are marked by red frames. Arrows indicate the position corresponding to the exon-exon borders