| C1C7H6 | EX7L_STRP7 | Streptococcus pneumoniae (strain 70585) | xseA SP70585_1257 | Detail |
| Q08I43 | ERI1_SCHPO | Schizosaccharomyces pombe (strain 972 / ATCC 24843) (Fission yeast) | eri1 pi077 SPBC30B4.08 | Detail |
| Q5HZL1 | ERI2_XENLA | Xenopus laevis (African clawed frog) | eri2 exod1 | Detail |
| Q7U490 | EX7L_SYNPX | Synechococcus sp. (strain WH8102) | xseA SYNW2181 | Detail |
| Q47SR1 | EX7L_THEFY | Thermobifida fusca (strain YX) | xseA Tfu_0468 | Detail |
| B1WBB4 | ENDUB_XENLA | Xenopus laevis (African clawed frog) | endou-b | Detail |
| Q7MNE3 | EX7L_VIBVY | Vibrio vulnificus (strain YJ016) | xseA VV0774 | Detail |
| Q58631 | CAS6B_METJA | Methanocaldococcus jannaschii (strain ATCC 43067 / DSM 2661 / JAL-1 / JCM 10045 / NBRC 100440) (Methanococcus jannaschii) | cas6b MJ1234 | Detail |
| B9M9X6 | CAS2_ACIET | Acidovorax ebreus (strain TPSY) (Diaphorobacter sp. (strain TPSY)) | cas2 Dtpsy_0058 | Detail |
| Q74N46 | CAS2_NANEQ | Nanoarchaeum equitans (strain Kin4-M) | cas2 NEQ016 | Detail |