| 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 |
| Q2YK44 | PHK_BRUA2 | Brucella abortus (strain 2308) | BAB2_0836 | Detail |
| Q97JE3 | PHK_CLOAB | Clostridium acetobutylicum (strain ATCC 824 / DSM 792 / JCM 1419 / LMG 5710 / VKM B-1787) | CA_C1343 | Detail |
| Q2YAC5 | PHK_NITMU | Nitrosospira multiformis (strain ATCC 25196 / NCIMB 11849 / C 71) | Nmul_A0993 | Detail |
| B3Q8J5 | PHK_RHOPT | Rhodopseudomonas palustris (strain TIE-1) | Rpal_1869 | Detail |
| P74690 | PHK_SYNY3 | Synechocystis sp. (strain PCC 6803 / Kazusa) | slr0453 | Detail |
| A0QGK3 | PHK_MYCA1 | Mycobacterium avium (strain 104) | MAV_2855 | Detail |
| B6YU51 | DAPAL_THEON | Thermococcus onnurineus (strain NA1) | dapAL TON_0506 | Detail |
| O58577 | DAPAL_PYRHO | Pyrococcus horikoshii (strain ATCC 700860 / DSM 12428 / JCM 9974 / NBRC 100139 / OT-3) | dapAL PH0847 | Detail |