Phylogenetically skewed knowledge of chloroplast C-to-U RNA editing sites. Current knowledge of chloroplast C-to-U RNA editing sites is phylogenetically skewed. The performance of CURE-Chloroplast on different lineages of seed plants is associated with the abundance of data relating to that lineage. The column "# organisms" refers to the number of organisms in the corresponding lineage. The column "# genes" refers to the total number of edited genes.