| Q5QV30 | HUTH_IDILO | Idiomarina loihiensis (strain ATCC BAA-735 / DSM 15497 / L2-TR) | hutH IL2450 | Detail |
| Q2RUU3 | HUTH_RHORT | Rhodospirillum rubrum (strain ATCC 11170 / ATH 1.1.1 / DSM 467 / LMG 4362 / NCIB 8255 / S1) | hutH Rru_A1301 | Detail |
| B4SZJ4 | HUTH_SALNS | Salmonella newport (strain SL254) | hutH SNSL254_A0855 | Detail |
| P0DB74 | HUTH_STRP3 | Streptococcus pyogenes serotype M3 (strain ATCC BAA-595 / MGAS315) | hutH SpyM3_1779 | Detail |
| A8MF64 | HUTH_ALKOO | Alkaliphilus oremlandii (strain OhILAs) (Clostridium oremlandii (strain OhILAs)) | hutH Clos_1187 | Detail |
| Q89GV3 | HUTH_BRADU | Bradyrhizobium diazoefficiens (strain JCM 10833 / IAM 13628 / NBRC 14792 / USDA 110) | hutH bll6242 | Detail |
| Q5WWW8 | HUTH_LEGPL | Legionella pneumophila (strain Lens) | hutH lpl1331 | Detail |
| P56265 | NIFB_KLEOX | Klebsiella oxytoca | nifB | Detail |
| P46044 | NIFB_FRAAL | Frankia alni | nifB | Detail |
| Q5NZX8 | HUTH_AROAE | Aromatoleum aromaticum (strain EbN1) (Azoarcus sp. (strain EbN1)) | hutH AZOSEA32610 ebA5742 | Detail |