| C7Z638 | MTNA_NECH7 | Nectria haematococca (strain 77-13-4 / ATCC MYA-4622 / FGSC 9596 / MPVI) (Fusarium solani subsp. pisi) | MRI1 NECHADRAFT_57836 | Detail |
| C4JWQ7 | MTNA_UNCRE | Uncinocarpus reesii (strain UAMH 1704) | MRI1 UREG_06999 | Detail |
| A7TSA5 | MTNA_VANPO | Vanderwaltozyma polyspora (strain ATCC 22028 / DSM 70294) (Kluyveromyces polysporus) | MRI1 Kpol_359p2 | Detail |
| Q8YR82 | MTNA_NOSS1 | Nostoc sp. (strain PCC 7120 / SAG 25.82 / UTEX 2576) | mtnA all3566 | Detail |
| Q606P2 | MTNA_METCA | Methylococcus capsulatus (strain ATCC 33009 / NCIMB 11132 / Bath) | mtnA MCA1974 | Detail |
| Q57896 | MTNA_METJA | Methanocaldococcus jannaschii (strain ATCC 43067 / DSM 2661 / JAL-1 / JCM 10045 / NBRC 100440) (Methanococcus jannaschii) | MJ0454 | Detail |
| A8YD90 | MTNA_MICAE | Microcystis aeruginosa | mtnA IPF_4478 | Detail |
| B0K8S2 | MTNA_THEP3 | Thermoanaerobacter pseudethanolicus (strain ATCC 33223 / 39E) (Clostridium thermohydrosulfuricum) | mtnA Teth39_0879 | Detail |
| Q72JR1 | MTNA_THET2 | Thermus thermophilus (strain HB27 / ATCC BAA-163 / DSM 7039) | mtnA TT_C0707 | Detail |
| Q113K5 | MTNA_TRIEI | Trichodesmium erythraeum (strain IMS101) | mtnA Tery_2078 | Detail |