Table 1.
PPR Proteins Are Specific to Eukaryotes
| Organism | Sequences | PPR Hits | E Hits | DYW Hits |
|---|---|---|---|---|
| Homo sapiens | 37,490 | 6 | 0 | 0 |
| Drosophila melanogaster | 17,087 | 2 | 0 | 0 |
| Caenorhabditis elegans | 20,673 | 2 | 0 | 0 |
| Schizosaccharomyces pombe | 5,010 | 6 | 0 | 0 |
| Saccharomyces cerevisiae | 6,304 | 5 | 0 | 0 |
| Trypanosoma brucei | 16,757 | 19 | 0 | 0 |
| Cyanidioschyzon merolae | 4,772 | 10 | 0 | 0 |
| Arabidopsis thaliana | 28,581 | 470 | 193 | 87 |
| Oryza sativa | 74,385 | 655 | 292 | 104 |
| Ralstonia solanacearum | 5,118 | 1 | 0 | 0 |
| Rickettsia prowazekii | 834 | 0 | 0 | 0 |
| Synechocystis sp | 3,169 | 0 | 0 | 0 |
Searches for PPR and PPR-associated motifs were conducted on complete or quasicomplete predicted proteomes from a range of species using HMMER. The figures indicate the number of proteins found to contain two or more PPR motifs with an E-value of <10 or one or more E or DYW motifs with a score of >0.