Figure 5From: Evolution of plant senescence(a) Comparison of PaO structures in representative genera by BLASTP alignment. Shading density indicates % sequence similarity: black = 100%; dark grey = 80%; light grey = 60%. Conserved motifs are shown. Both the Rieske and PaO domains are present in the Arabidopsis sequence (b) and other species except that of the b-proteobacterium Ralstonia (c), in which the PaO motif is missing.Back to article page