| P11067 | NIFB_AZOVI | Azotobacter vinelandii | nifB | Detail |
| A8LL46 | ARLY_DINSH | Dinoroseobacter shibae (strain DSM 16493 / NCIMB 14021 / DFL 12) | argH Dshi_3062 | Detail |
| A4WG51 | ARLY_ENT38 | Enterobacter sp. (strain 638) | argH Ent638_4026 | Detail |
| Q9K3D6 | ARGHA_MORAB | Moritella abyssi | argHA | Detail |
| C3MHU1 | ARLY_SINFN | Sinorhizobium fredii (strain NBRC 101917 / NGR234) | argH NGR_c26940 | Detail |
| Q10XB0 | CPXS3_TRIEI | Trichodesmium erythraeum (strain IMS101) | cpcS3 Tery_4106 | Detail |
| Q8E271 | ARLY_STRA5 | Streptococcus agalactiae serotype V (strain ATCC BAA-611 / 2603 V/R) | argH SAG0126 | Detail |
| Q7TTY1 | ARLY_SYNPX | Synechococcus sp. (strain WH8102) | argH SYNW0013 | Detail |
| P24427 | NIFB_RHILT | Rhizobium leguminosarum bv. trifolii | nifB | Detail |
| A0A2P1GIY1 | HL4_CATRO | Catharanthus roseus (Madagascar periwinkle) (Vinca rosea) | HL4 | Detail |