| F2XG53 | CAS3_STRTR | Streptococcus thermophilus | cas3 | Detail |
| A2BKJ6 | CAS2_HYPBU | Hyperthermus butylicus (strain DSM 5456 / JCM 9403 / PLM1-5) | cas2 Hbut_0650 | Detail |
| O28401 | CAS1A_ARCFU | Archaeoglobus fulgidus (strain ATCC 49558 / VC-16 / DSM 4304 / JCM 9628 / NBRC 100126) | cas1-1 AF_1878 | Detail |
| Q9K968 | EX7S_BACHD | Bacillus halodurans (strain ATCC BAA-125 / DSM 18197 / FERM 7344 / JCM 9153 / C-125) | xseB BH2782 | Detail |
| Q39UA9 | EX7S_GEOMG | Geobacter metallireducens (strain GS-15 / ATCC 53774 / DSM 7210) | xseB Gmet_1936 | Detail |
| P38777 | FSH1_YEAST | Saccharomyces cerevisiae (strain ATCC 204508 / S288c) (Baker's yeast) | FSH1 YHR049W | Detail |
| Q99369 | FSH3_YEAST | Saccharomyces cerevisiae (strain ATCC 204508 / S288c) (Baker's yeast) | FSH3 YOR280C | Detail |
| A9HIR6 | EX7S_GLUDA | Gluconacetobacter diazotrophicus (strain ATCC 49037 / DSM 5601 / PAl5) | xseB GDI1862 Gdia_0089 | Detail |
| B4P5U9 | FEN1_DROYA | Drosophila yakuba (Fruit fly) | Fen1 GE14031 | Detail |
| A5UEV4 | EX7S_HAEIG | Haemophilus influenzae (strain PittGG) | xseB CGSHiGG_01070 | Detail |