| D5VRM1 | NIFB_METIM | Methanocaldococcus infernus (strain DSM 11812 / JCM 15783 / ME) | nifB Metin_0554 | Detail |
| B1KPT3 | ISPF_SHEWM | Shewanella woodyi (strain ATCC 51908 / MS32) | ispF Swoo_3347 | Detail |
| Q8KC85 | NIFB_CHLTE | Chlorobaculum tepidum (strain ATCC 49652 / DSM 12025 / NBRC 103806 / TLS) (Chlorobium tepidum) | nifB CT1540 | Detail |
| P09824 | NIFB_RHIME | Rhizobium meliloti (strain 1021) (Ensifer meliloti) (Sinorhizobium meliloti) | nifB RA0442 SMa0814 | Detail |
| B7MKM0 | ISPF_ECO45 | Escherichia coli O45:K1 (strain S88 / ExPEC) | ispF ECS88_3016 | Detail |
| Q250Q9 | ISPF_DESHY | Desulfitobacterium hafniense (strain Y51) | ispF DSY0444 | Detail |
| B2URI3 | ISPF_AKKM8 | Akkermansia muciniphila (strain ATCC BAA-835 / Muc) | ispF Amuc_1243 | Detail |
| B6EKL5 | ISPF_ALISL | Aliivibrio salmonicida (strain LFI1238) (Vibrio salmonicida (strain LFI1238)) | ispF VSAL_I2511 | Detail |
| C3P9N2 | ISPF_BACAA | Bacillus anthracis (strain A0248) | ispF BAA_0102 | Detail |
| A0R8F8 | ISPF_BACAH | Bacillus thuringiensis (strain Al Hakam) | ispF BALH_0086 | Detail |