Figure 2.

Editing frequency {(A [number of edited codons]/B [number of codons in the genome]) × 1000} versus Grantham index[ 47 ]for all edited codons in protein coding genes in mitochondria of A. thaliana (a), B. vulgaris (b), and O. sativa (c). Amino acid residues are shown as pre-edited to edited below all codons. The vertical axis indicates Grantham index value and editing frequency. Edited codons are grouped into nonsynonymous 1^st, 2^nd, and silent site changes. The dotted line denotes an upper limit of editing frequency across silent editing sites. The values obtained for A/B were multiplied by 1000 to make these data plottable against Grantham's values.