| A4VN63 | Y2764_PSEU5 | Pseudomonas stutzeri (strain A1501) | PST_2764 | Detail |
| Q60178 | HEM2_METJA | Methanocaldococcus jannaschii (strain ATCC 43067 / DSM 2661 / JAL-1 / JCM 10045 / NBRC 100440) (Methanococcus jannaschii) | hemB MJ0643 | Detail |
| Q0K0D3 | Y5759_CUPNH | Cupriavidus necator (strain ATCC 17699 / H16 / DSM 428 / Stanier 337) (Ralstonia eutropha) | H16_B1759 | Detail |
| P27714 | NIFB_HERSE | Herbaspirillum seropedicae | nifB | Detail |
| M1W851 | PIG6_CLAP2 | Claviceps purpurea (strain 20.1) (Ergot fungus) (Sphacelia segetum) | CPUR_05428 | Detail |
| P23107 | XYLJ_PSEPU | Pseudomonas putida (Arthrobacter siderocapsulatus) | xylJ | Detail |
| Q4ZZ54 | Y498_PSEU2 | Pseudomonas syringae pv. syringae (strain B728a) | Psyr_0498 | Detail |
| Q4WF54 | SIDH_ASPFU | Neosartorya fumigata (strain ATCC MYA-4609 / Af293 / CBS 101355 / FGSC A1100) (Aspergillus fumigatus) | sidH AFUA_3G03410 | Detail |
| A8HRQ8 | Y4080_AZOC5 | Azorhizobium caulinodans (strain ATCC 43989 / DSM 5975 / JCM 20966 / NBRC 14845 / NCIMB 13405 / ORS 571) | AZC_4080 | Detail |
| Q2ITZ4 | Y3621_RHOP2 | Rhodopseudomonas palustris (strain HaA2) | RPB_3621 | Detail |