31-60 of 852
| Anabaena variabilis ATCC 29413 | Bacteria | Ni | user | Ni-Fe hydrogenase, large subunit | YP_325153.1 | | PDB BLAST (NCBI) | STRING search |
| Anabaena variabilis ATCC 29413 | Bacteria | Ni | user | urease subunit alpha | YP_324119.1 | | PDB BLAST (NCBI) | STRING search |
| Anaeromyxobacter dehalogenans 2CP-C | Bacteria | Ni | user | Ni-Fe hydrogenase, large subunit | YP_463691.1 | | PDB BLAST (NCBI) | STRING search |
| Anaeromyxobacter dehalogenans 2CP-C | Bacteria | Ni | user | Ni-Fe hydrogenase, large subunit | YP_467363.1 | | PDB BLAST (NCBI) | STRING search |
| Anaeromyxobacter sp. Fw109-5 | Bacteria | Ni | user | Ni-Fe hydrogenase large subunit | YP_001377721.1 | | PDB BLAST (NCBI) | STRING search |
| Anaeromyxobacter sp. Fw109-5 | Bacteria | Ni | user | Ni-Fe hydrogenase large subunit | YP_001380685.1 | | PDB BLAST (NCBI) | STRING search |
| Anaeromyxobacter sp. Fw109-5 | Bacteria | Ni | user | Ni-Fe hydrogenase large subunit | YP_001381468.1 | | PDB BLAST (NCBI) | STRING search |
| Anaeromyxobacter sp. Fw109-5 | Bacteria | Ni | user | urease subunit alpha | YP_001381211.1 | | PDB BLAST (NCBI) | STRING search |
| Aquifex aeolicus VF5 | Bacteria | Ni | user | Ni-Fe hydrogenase large subunit | NP_213455.1 | | PDB BLAST (NCBI) | STRING search |
| Aquifex aeolicus VF5 | Bacteria | Ni | user | Ni-Fe hydrogenase large subunit | NP_213549.1 | | PDB BLAST (NCBI) | STRING search |
| Aquifex aeolicus VF5 | Bacteria | Ni | user | Ni-Fe hydrogenase large subunit | NP_213655.1 | | PDB BLAST (NCBI) | STRING search |
| Arabidopsis thaliana | Eukaryota | Ni | user | Urease | NP_176922.1 | | PDB BLAST (NCBI) | STRING search |
| Archaeoglobus fulgidus DSM 4304 | Archaea | Ni | user | Acetyl-coenzyme A decarbonylase/synthase | NP_069215.1 | | PDB BLAST (NCBI) | STRING search |
| Archaeoglobus fulgidus DSM 4304 | Archaea | Ni | user | Ni carbon monoxide dehydrogenase, catalytic subunit | NP_070675.1 | | PDB BLAST (NCBI) | STRING search |
| Archaeoglobus fulgidus DSM 4304 | Archaea | Ni | user | Ni-Fe hydrogenase, F420-nonreducing hydrogenase (vhtA) | NP_070209.1 | | PDB BLAST (NCBI) | STRING search |
| Archaeoglobus fulgidus DSM 4304 | Archaea | Ni | user | Ni-Fe hydrogenase, methylviologen-reducing hydrogenase, subunit alpha (vhuA) | NP_070201.1 | | PDB BLAST (NCBI) | STRING search |
| Arcobacter butzleri RM4018 | Bacteria | Ni | user | Ni-Fe hydrogenase, large subunit | YP_001490351.1 | | PDB BLAST (NCBI) | STRING search |
| Arcobacter butzleri RM4018 | Bacteria | Ni | user | Ni-Fe hydrogenase, large subunit | YP_001490358.1 | | PDB BLAST (NCBI) | STRING search |
| Arcobacter butzleri RM4018 | Bacteria | Ni | user | Ni-Fe hydrogenase, large subunit | YP_001490360.1 | | PDB BLAST (NCBI) | STRING search |
| Arcobacter butzleri RM4018 | Bacteria | Ni | user | urease subunit alpha | YP_001489741.1 | | PDB BLAST (NCBI) | STRING search |
| Arthrobacter aurescens TC1 | Bacteria | Ni | user | Urease alpha subunit | YP_946037.1 | | PDB BLAST (NCBI) | STRING search |
| Arthrobacter chlorophenolicus A6 | Bacteria | Ni | user | Urease | YP_002486480.1 | | PDB BLAST (NCBI) | STRING search |
| Arthrobacter sp. FB24 | Bacteria | Ni | user | Urease alpha subunit | YP_829744.1 | | PDB BLAST (NCBI) | STRING search |
| Aspergillus clavatus NRRL 1 | Eukaryota | Ni | user | Urease | XP_001269704.1 | | PDB BLAST (NCBI) | STRING search |
| Aspergillus fumigatus Af293 | Eukaryota | Ni | user | Urease | XP_750204.1 | | PDB BLAST (NCBI) | STRING search |
| Aspergillus nidulans FGSC A4 | Eukaryota | Ni | user | Urease | EAA66530.1 | | PDB BLAST (NCBI) | STRING search |
| Aspergillus terreus NIH2624 | Eukaryota | Ni | user | Urease | XP_001212926.1 | | PDB BLAST (NCBI) | STRING search |
| Aurantimonas sp. SI85-9A1 | Bacteria | Ni | user | urease alpha subunit | ZP_01228250.1 | | PDB BLAST (NCBI) | STRING search |
| Azoarcus sp. BH72 | Bacteria | Ni | user | Ni-Fe hydrogenase | YP_935310.1 | | PDB BLAST (NCBI) | STRING search |
| Azoarcus sp. BH72 | Bacteria | Ni | user | Ni-Fe hydrogenase, beta subunit | YP_932919.1 | | PDB BLAST (NCBI) | STRING search |
