| Co | user | MtrA, tetrahydromethanopterin S-methyltransferase subunit A | NP_613945.1 | | PDB BLAST (NCBI) | STRING search |
| Mo | transporter | ModA | NP_614804.1 | | PDB BLAST (NCBI) | STRING search |
| Mo | transporter | ModB | NP_614805.1 | | PDB BLAST (NCBI) | STRING search |
| Mo | transporter | ModC | NP_614806.1 | | PDB BLAST (NCBI) | STRING search |
| Mo | user | DMSO reductase family protein, formylmethanofuran dehydrogenase subunit B | NP_613546.1 | | PDB BLAST (NCBI) | STRING search |
| Mo | user | Nitrogenase molybdenum-iron protein | NP_614668.1 | | PDB BLAST (NCBI) | STRING search |
| Mo_Se | user | DMSO reductase family protein, Sec-containing FdhA | NP_613606.1 | | PDB BLAST (NCBI) | STRING search |
| Mo_Se | user | DMSO reductase family protein, Sec-containing FdhA, formylmethanofuran dehydrogenase subunit B | NP_614810.1 | | PDB BLAST (NCBI) | STRING search |
| Ni | user | Acetyl-coenzyme A decarbonylase/synthase | NP_614004.1 | | PDB BLAST (NCBI) | STRING search |
| Ni | user | Methyl-coenzyme M reductase, alpha subunit | NP_613940.1 | | PDB BLAST (NCBI) | STRING search |
| Ni | user | Ni carbon monoxide dehydrogenase catalytic subunit | NP_613821.1 | | PDB BLAST (NCBI) | STRING search |
| Ni | user | Ni-Fe hydrogenase III large subunit | NP_613748.1 | | PDB BLAST (NCBI) | STRING search |
| Ni | user | Ni-Fe hydrogenase, coenzyme F420-reducing hydrogenase, alpha subunit | NP_613465.1 | | PDB BLAST (NCBI) | STRING search |
| Ni | user | Ni-Fe hydrogenase, coenzyme F420-reducing hydrogenase, alpha subunit | NP_613553.1 | | PDB BLAST (NCBI) | STRING search |
| Ni | user | Ni-Fe hydrogenase, coenzyme F420-reducing hydrogenase, alpha subunit | NP_614214.1 | | PDB BLAST (NCBI) | STRING search |
| Ni/Co | transporter | NikM | NP_613467.1 | | PDB BLAST (NCBI) | STRING search |
| Ni/Co | transporter | NikO | NP_613469.1 | | PDB BLAST (NCBI) | STRING search |
| Ni/Co | transporter | NikQ | NP_613468.1 | | PDB BLAST (NCBI) | STRING search |
| Se | user | Coenzyme F420-reducing hydrogenase, alpha subunit, FrhA | NP_614214.1 | | PDB BLAST (NCBI) | STRING search |
| Se | user | Coenzyme F420-reducing hydrogenase, alpha subunit, FrhA | | | PDB BLAST (NCBI) | STRING search |
| Se | user | Coenzyme F420-reducing hydrogenase, delta subunit, FrhD | NP_613912.1 | | PDB BLAST (NCBI) | STRING search |
| Se | user | Heterodisulfide reductase, subunit A, HdrA | NP_613536.1 | | PDB BLAST (NCBI) | STRING search |
| Se | user | Selenophosphate synthetase | NP_614652.1 | | PDB BLAST (NCBI) | STRING search |
