| WP_020176873.1 | Methyloferula stellata | [NiFe] Group 2a | Alphaproteobacteria | Rhizobiales | Aerobic Uptake | Tolerant | 5 | [NiFe]-centre, 2 x [4Fe4S] clusters, 1 x [3Fe4S] cluster | [FeS] protein, hypothetical proteins |
| WP_007015744.1 | Novosphingobium pentaromativorans | [NiFe] Group 2a | Alphaproteobacteria | Sphingomonadales | Aerobic Uptake | Tolerant | 5 | [NiFe]-centre, 2 x [4Fe4S] clusters, 1 x [3Fe4S] cluster | [FeS] protein, hypothetical proteins |
| WP_011536525.1 | Sphingopyxis alaskensis | [NiFe] Group 2a | Alphaproteobacteria | Sphingomonadales | Aerobic Uptake | Tolerant | 5 | [NiFe]-centre, 2 x [4Fe4S] clusters, 1 x [3Fe4S] cluster | [FeS] protein, hypothetical proteins |
| WP_011714112.1 | Magnetococcus marinus | [NiFe] Group 2b | Alphaproteobacteria | Magnetococcales | Sensory | Tolerant | 4 | [NiFe]-centre, 3 x [4Fe4S] clusters | Histidine kinase, response regulator |
| WP_018391446.1 | Ancylobacter sp. FA202 | [NiFe] Group 2b | Alphaproteobacteria | Rhizobiales | Sensory | Tolerant | 4 | [NiFe]-centre, 3 x [4Fe4S] clusters | Histidine kinase, response regulator |
| WP_012169127.1 | Azorhizobium caulinodans | [NiFe] Group 2b | Alphaproteobacteria | Rhizobiales | Sensory | Tolerant | 4 | [NiFe]-centre, 3 x [4Fe4S] clusters | Histidine kinase, response regulator |
| WP_029004859.1 | Azorhizobium doebereinerae | [NiFe] Group 2b | Alphaproteobacteria | Rhizobiales | Sensory | Tolerant | 4 | [NiFe]-centre, 3 x [4Fe4S] clusters | Histidine kinase, response regulator |
| WP_012384146.1 | Beijerinckia indica | [NiFe] Group 2b | Alphaproteobacteria | Rhizobiales | Sensory | Tolerant | 4 | [NiFe]-centre, 3 x [4Fe4S] clusters | Histidine kinase, response regulator |
| WP_029356684.1 | Bosea sp. 117 | [NiFe] Group 2b | Alphaproteobacteria | Rhizobiales | Sensory | Tolerant | 4 | [NiFe]-centre, 3 x [4Fe4S] clusters | Histidine kinase, response regulator |
| WP_011089681.1 | Bradyrhizobium diazoefficiens | [NiFe] Group 2b | Alphaproteobacteria | Rhizobiales | Sensory | Tolerant | 4 | [NiFe]-centre, 3 x [4Fe4S] clusters | Histidine kinase, response regulator |
| WP_028135604.1 | Bradyrhizobium japonicum | [NiFe] Group 2b | Alphaproteobacteria | Rhizobiales | Sensory | Tolerant | 4 | [NiFe]-centre, 3 x [4Fe4S] clusters | Histidine kinase, response regulator |
| WP_015668919.1 | Bradyrhizobium oligotrophicum | [NiFe] Group 2b | Alphaproteobacteria | Rhizobiales | Sensory | Tolerant | 4 | [NiFe]-centre, 3 x [4Fe4S] clusters | Histidine kinase, response regulator |
| WP_015597392.1 | Hyphomicrobium denitrificans | [NiFe] Group 2b | Alphaproteobacteria | Rhizobiales | Sensory | Tolerant | 4 | [NiFe]-centre, 3 x [4Fe4S] clusters | Histidine kinase, response regulator |
| WP_026600034.1 | Methylocystis sp. LW5 | [NiFe] Group 2b | Alphaproteobacteria | Rhizobiales | Sensory | Tolerant | 4 | [NiFe]-centre, 3 x [4Fe4S] clusters | Histidine kinase, response regulator |
| WP_014891818.1 | Methylocystis sp. SC2 | [NiFe] Group 2b | Alphaproteobacteria | Rhizobiales | Sensory | Tolerant | 4 | [NiFe]-centre, 3 x [4Fe4S] clusters | Histidine kinase, response regulator |
| WP_024878510.1 | Methylosinus sp. LW3 | [NiFe] Group 2b | Alphaproteobacteria | Rhizobiales | Sensory | Tolerant | 4 | [NiFe]-centre, 3 x [4Fe4S] clusters | Histidine kinase, response regulator |
| WP_018266917.1 | Methylosinus sp. LW4 | [NiFe] Group 2b | Alphaproteobacteria | Rhizobiales | Sensory | Tolerant | 4 | [NiFe]-centre, 3 x [4Fe4S] clusters | Histidine kinase, response regulator |
| WP_003612204.1 | Methylosinus trichosporium | [NiFe] Group 2b | Alphaproteobacteria | Rhizobiales | Sensory | Tolerant | 4 | [NiFe]-centre, 3 x [4Fe4S] clusters | Histidine kinase, response regulator |
| WP_013913763.1 | Oligotropha carboxidovorans | [NiFe] Group 2b | Alphaproteobacteria | Rhizobiales | Sensory | Tolerant | 4 | [NiFe]-centre, 3 x [4Fe4S] clusters | Histidine kinase, response regulator |
| WP_028738631.1 | Rhizobium selenitireducens | [NiFe] Group 2b | Alphaproteobacteria | Rhizobiales | Sensory | Tolerant | 4 | [NiFe]-centre, 3 x [4Fe4S] clusters | Histidine kinase, response regulator |
| WP_013418661.1 | Rhodomicrobium vannielii | [NiFe] Group 2b | Alphaproteobacteria | Rhizobiales | Sensory | Tolerant | 4 | [NiFe]-centre, 3 x [4Fe4S] clusters | Histidine kinase, response regulator |
| WP_011662668.1 | Rhodopseudomonas palustris | [NiFe] Group 2b | Alphaproteobacteria | Rhizobiales | Sensory | Tolerant | 4 | [NiFe]-centre, 3 x [4Fe4S] clusters | Histidine kinase, response regulator |
| WP_022723662.1 | Rhodopseudomonas sp. B29 | [NiFe] Group 2b | Alphaproteobacteria | Rhizobiales | Sensory | Tolerant | 4 | [NiFe]-centre, 3 x [4Fe4S] clusters | Histidine kinase, response regulator |
| WP_028877931.1 | Terasakiella pusilla | [NiFe] Group 2b | Alphaproteobacteria | Rhizobiales | Sensory | Tolerant | 4 | [NiFe]-centre, 3 x [4Fe4S] clusters | Histidine kinase, response regulator |
| WP_011996000.1 | Xanthobacter autotrophicus | [NiFe] Group 2b | Alphaproteobacteria | Rhizobiales | Sensory | Tolerant | 4 | [NiFe]-centre, 3 x [4Fe4S] clusters | Histidine kinase, response regulator |
| WP_024281261.1 | Xanthobacter sp. 126 | [NiFe] Group 2b | Alphaproteobacteria | Rhizobiales | Sensory | Tolerant | 4 | [NiFe]-centre, 3 x [4Fe4S] clusters | Histidine kinase, response regulator |
| WP_029556474.1 | Xanthobacter sp. 91 | [NiFe] Group 2b | Alphaproteobacteria | Rhizobiales | Sensory | Tolerant | 4 | [NiFe]-centre, 3 x [4Fe4S] clusters | Histidine kinase, response regulator |
| WP_009505605.1 | Citreicella sp. 357 | [NiFe] Group 2b | Alphaproteobacteria | Rhodobacterales | Sensory | Tolerant | 4 | [NiFe]-centre, 3 x [4Fe4S] clusters | Histidine kinase, response regulator |
| WP_008886444.1 | Citreicella sp. SE45 | [NiFe] Group 2b | Alphaproteobacteria | Rhodobacterales | Sensory | Tolerant | 4 | [NiFe]-centre, 3 x [4Fe4S] clusters | Histidine kinase, response regulator |
| WP_011749363.1 | Paracoccus denitrificans | [NiFe] Group 2b | Alphaproteobacteria | Rhodobacterales | Sensory | Tolerant | 4 | [NiFe]-centre, 3 x [4Fe4S] clusters | Histidine kinase, response regulator |
| WP_024844879.1 | Paracoccus pantotrophus | [NiFe] Group 2b | Alphaproteobacteria | Rhodobacterales | Sensory | Tolerant | 4 | [NiFe]-centre, 3 x [4Fe4S] clusters | Histidine kinase, response regulator |
| WP_028714014.1 | Paracoccus sp. J55 | [NiFe] Group 2b | Alphaproteobacteria | Rhodobacterales | Sensory | Tolerant | 4 | [NiFe]-centre, 3 x [4Fe4S] clusters | Histidine kinase, response regulator |
| WP_028717756.1 | Paracoccus yeei | [NiFe] Group 2b | Alphaproteobacteria | Rhodobacterales | Sensory | Tolerant | 4 | [NiFe]-centre, 3 x [4Fe4S] clusters | Histidine kinase, response regulator |
| WP_007796497.1 | Pelagibaca bermudensis | [NiFe] Group 2b | Alphaproteobacteria | Rhodobacterales | Sensory | Tolerant | 4 | [NiFe]-centre, 3 x [4Fe4S] clusters | Histidine kinase, response regulator |
| WP_023918084.1 | Rhodobacter capsulatus | [NiFe] Group 2b | Alphaproteobacteria | Rhodobacterales | Sensory | Tolerant | 4 | [NiFe]-centre, 3 x [4Fe4S] clusters | Histidine kinase, response regulator |
| WP_009566015.1 | Rhodobacter sp. AKP1 | [NiFe] Group 2b | Alphaproteobacteria | Rhodobacterales | Sensory | Tolerant | 4 | [NiFe]-centre, 3 x [4Fe4S] clusters | Histidine kinase, response regulator |
| WP_023664198.1 | Rhodobacter sp. CACIA14H1 | [NiFe] Group 2b | Alphaproteobacteria | Rhodobacterales | Sensory | Tolerant | 4 | [NiFe]-centre, 3 x [4Fe4S] clusters | Histidine kinase, response regulator |
| WP_008030826.1 | Rhodobacter sp. SW2 | [NiFe] Group 2b | Alphaproteobacteria | Rhodobacterales | Sensory | Tolerant | 4 | [NiFe]-centre, 3 x [4Fe4S] clusters | Histidine kinase, response regulator |
| WP_002720656.1 | Rhodobacter sphaeroides | [NiFe] Group 2b | Alphaproteobacteria | Rhodobacterales | Sensory | Tolerant | 4 | [NiFe]-centre, 3 x [4Fe4S] clusters | Histidine kinase, response regulator |
| WP_008386856.1 | Rhodovulum sp. PH10 | [NiFe] Group 2b | Alphaproteobacteria | Rhodobacterales | Sensory | Tolerant | 4 | [NiFe]-centre, 3 x [4Fe4S] clusters | Histidine kinase, response regulator |
| WP_008282513.1 | Roseovarius sp. TM1035 | [NiFe] Group 2b | Alphaproteobacteria | Rhodobacterales | Sensory | Tolerant | 4 | [NiFe]-centre, 3 x [4Fe4S] clusters | Histidine kinase, response regulator |
| WP_005863651.1 | Sagittula stellata | [NiFe] Group 2b | Alphaproteobacteria | Rhodobacterales | Sensory | Tolerant | 4 | [NiFe]-centre, 3 x [4Fe4S] clusters | Histidine kinase, response regulator |
| WP_020043467.1 | Salipiger mucosus | [NiFe] Group 2b | Alphaproteobacteria | Rhodobacterales | Sensory | Tolerant | 4 | [NiFe]-centre, 3 x [4Fe4S] clusters | Histidine kinase, response regulator |
| WP_025825893.1 | Acetobacter okinawensis | [NiFe] Group 2b | Alphaproteobacteria | Rhodospiralles | Sensory | Tolerant | 4 | [NiFe]-centre, 3 x [4Fe4S] clusters | Histidine kinase, response regulator |
| WP_004274639.1 | Azospirillum amazonense | [NiFe] Group 2b | Alphaproteobacteria | Rhodospiralles | Sensory | Tolerant | 4 | [NiFe]-centre, 3 x [4Fe4S] clusters | Histidine kinase, response regulator |
| WP_029009282.1 | Azospirillum halopraeferens | [NiFe] Group 2b | Alphaproteobacteria | Rhodospiralles | Sensory | Tolerant | 4 | [NiFe]-centre, 3 x [4Fe4S] clusters | Histidine kinase, response regulator |
| WP_012976476.1 | Azospirillum lipoferum | [NiFe] Group 2b | Alphaproteobacteria | Rhodospiralles | Sensory | Tolerant | 4 | [NiFe]-centre, 3 x [4Fe4S] clusters | Histidine kinase, response regulator |
| WP_024080410.1 | Magnetospirillum gryphiswaldense | [NiFe] Group 2b | Alphaproteobacteria | Rhodospiralles | Sensory | Tolerant | 4 | [NiFe]-centre, 3 x [4Fe4S] clusters | Histidine kinase, response regulator |
| WP_011384345.1 | Magnetospirillum magneticum | [NiFe] Group 2b | Alphaproteobacteria | Rhodospiralles | Sensory | Tolerant | 4 | [NiFe]-centre, 3 x [4Fe4S] clusters | Histidine kinase, response regulator |
| WP_008622301.1 | Magnetospirillum sp. SO-1 | [NiFe] Group 2b | Alphaproteobacteria | Rhodospiralles | Sensory | Tolerant | 4 | [NiFe]-centre, 3 x [4Fe4S] clusters | Histidine kinase, response regulator |