| WP_018703705.1 | Anaeromusa acidaminophila | [FeFe] Group A1 | Firmicutes | Selenomonadales | Evolving | Labile | 3 | [FeFe]-centre, 2 x [4Fe4S] clusters | Small subunit, cytochrome b |
| WP_022852507.1 | Thermodesulfatator atlanticus | [FeFe] Group A1 | Thermodesulfobacteria | Thermodesulfobacteriales | Evolving | Labile | 3 | [FeFe]-centre, 2 x [4Fe4S] clusters | Small subunit, cytochrome b |
| WP_022854721.1 | Thermodesulfobacterium thermophilum | [FeFe] Group A1 | Thermodesulfobacteria | Thermodesulfobacteriales | Evolving | Labile | 3 | [FeFe]-centre, 2 x [4Fe4S] clusters | Small subunit, cytochrome b |
| WP_023268563.1 | Shewanella decolorationis | [FeFe] Group A1 | Gammaproteobacteria | Alteromonadales | Evolving | Labile | 3 | [FeFe]-centre, 2 x [4Fe4S] clusters | Small subunit, cytochrome b |
| WP_024788990.1 | Lebetimonas sp. JH292 | [FeFe] Group A1 | Epsilonproteobacteria | Nautiliales | Evolving | Labile | 3 | [FeFe]-centre, 2 x [4Fe4S] clusters | Small subunit, cytochrome b |
| WP_025823167.1 | Shewanella marina | [FeFe] Group A1 | Gammaproteobacteria | Alteromonadales | Evolving | Labile | 3 | [FeFe]-centre, 2 x [4Fe4S] clusters | Small subunit, cytochrome b |
| WP_025888294.1 | Shewanella haliotis | [FeFe] Group A1 | Gammaproteobacteria | Alteromonadales | Evolving | Labile | 3 | [FeFe]-centre, 2 x [4Fe4S] clusters | Small subunit, cytochrome b |
| WP_026329186.1 | Zymophilus raffinosivorans | [FeFe] Group A1 | Firmicutes | Selenomonadales | Evolving | Labile | 3 | [FeFe]-centre, 2 x [4Fe4S] clusters | Small subunit, cytochrome b |
| WP_027938424.1 | Anaeroarcus burkinensis | [FeFe] Group A1 | Firmicutes | Selenomonadales | Evolving | Labile | 3 | [FeFe]-centre, 2 x [4Fe4S] clusters | Small subunit, cytochrome b |
| WP_028109440.1 | Ferrimonas futtsuensis | [FeFe] Group A1 | Gammaproteobacteria | Alteromonadales | Evolving | Labile | 3 | [FeFe]-centre, 2 x [4Fe4S] clusters | Small subunit, cytochrome b |
| WP_028116362.1 | Ferrimonas senticii | [FeFe] Group A1 | Gammaproteobacteria | Alteromonadales | Evolving | Labile | 3 | [FeFe]-centre, 2 x [4Fe4S] clusters | Small subunit, cytochrome b |
| WP_028768142.1 | Shewanella fidelis | [FeFe] Group A1 | Gammaproteobacteria | Alteromonadales | Evolving | Labile | 3 | [FeFe]-centre, 2 x [4Fe4S] clusters | Small subunit, cytochrome b |
| WP_028781324.1 | Shewanella sp. 38A_GOM-205m | [FeFe] Group A1 | Gammaproteobacteria | Alteromonadales | Evolving | Labile | 3 | [FeFe]-centre, 2 x [4Fe4S] clusters | Small subunit, cytochrome b |
| WP_028841196.1 | Thermodesulfobacterium hveragerdense | [FeFe] Group A1 | Thermodesulfobacteria | Thermodesulfobacteriales | Evolving | Labile | 3 | [FeFe]-centre, 2 x [4Fe4S] clusters | Small subunit, cytochrome b |
| WP_003493693.1 | Clostridium sporogenes | [FeFe] Group A1 | Firmicutes | Clostridiales | Evolving | Labile | 2 | [FeFe]-centre, 3 x [4Fe4S] clusters, 1 x [2Fe2S] cluster | Small subunit |
| WP_005996594.1 | Desulfovibrio fructosivorans | [FeFe] Group A1 | Deltaproteobacteria | Desulfovibrionales | Evolving | Labile | 2 | [FeFe]-centre, 2 x [4Fe4S] clusters | Small subunit |
| WP_009379319.1 | Bilophila sp. 4_1_30 | [FeFe] Group A1 | Deltaproteobacteria | Desulfovibrionales | Evolving | Labile | 2 | [FeFe]-centre, 2 x [4Fe4S] clusters | Small subunit |
| WP_009380765.1 | Bilophila sp. 4_1_30 | [FeFe] Group A1 | Deltaproteobacteria | Desulfovibrionales | Evolving | Labile | 2 | [FeFe]-centre, 2 x [4Fe4S] clusters | Small subunit |
| WP_010939057.1 | Desulfovibrio vulgaris | [FeFe] Group A1 | Deltaproteobacteria | Desulfovibrionales | Evolving | Labile | 2 | [FeFe]-centre, 2 x [4Fe4S] clusters | Small subunit |
| WP_011366264.1 | Desulfovibrio alaskensis | [FeFe] Group A1 | Deltaproteobacteria | Desulfovibrionales | Evolving | Labile | 2 | [FeFe]-centre, 2 x [4Fe4S] clusters | Small subunit |
| WP_011368163.1 | Desulfovibrio alaskensis | [FeFe] Group A1 | Deltaproteobacteria | Desulfovibrionales | Evolving | Labile | 2 | [FeFe]-centre, 2 x [4Fe4S] clusters | Small subunit |
| WP_011697718.1 | Syntrophobacter fumaroxidans | [FeFe] Group A1 | Deltaproteobacteria | Syntrophobacterales | Evolving | Labile | 2 | [FeFe]-centre, 2 x [4Fe4S] clusters | Small subunit |
| WP_012625129.1 | Desulfovibrio desulfuricans | [FeFe] Group A1 | Deltaproteobacteria | Desulfovibrionales | Evolving | Labile | 2 | [FeFe]-centre, 2 x [4Fe4S] clusters | Small subunit |
| WP_013513265.1 | Desulfovibrio aespoeensis | [FeFe] Group A1 | Deltaproteobacteria | Desulfovibrionales | Evolving | Labile | 2 | [FeFe]-centre, 2 x [4Fe4S] clusters | Small subunit |
| WP_014812866.1 | Desulfomonile tiedjei | [FeFe] Group A1 | Deltaproteobacteria | Syntrophobacterales | Evolving | Labile | 2 | [FeFe]-centre, 2 x [4Fe4S] clusters | Small subunit |
| WP_015337634.1 | Desulfovibrio hydrothermalis | [FeFe] Group A1 | Deltaproteobacteria | Desulfovibrionales | Evolving | Labile | 2 | [FeFe]-centre, 2 x [4Fe4S] clusters | Small subunit |
| WP_015851212.1 | Desulfovibrio salexigens | [FeFe] Group A1 | Deltaproteobacteria | Desulfovibrionales | Evolving | Labile | 2 | [FeFe]-centre, 2 x [4Fe4S] clusters | Small subunit |
| WP_021646890.1 | Bacteroides pyogenes | [FeFe] Group A3 | Bacteroidetes | Bacteroidales | Evolving | Labile | 2 | [FeFe]-centre, 2 x [4Fe4S] clusters | Small subunit |
| WP_022663178.1 | Desulfovibrio longus | [FeFe] Group A1 | Deltaproteobacteria | Desulfovibrionales | Evolving | Labile | 2 | [FeFe]-centre, 2 x [4Fe4S] clusters | Small subunit |
| WP_024933644.1 | Clostridium botulinum | [FeFe] Group A1 | Firmicutes | Clostridiales | Evolving | Labile | 2 | [FeFe]-centre, 3 x [4Fe4S] clusters, 1 x [2Fe2S] cluster | Small subunit |
| WP_027176561.1 | Desulfovibrio aminophilus | [FeFe] Group A1 | Deltaproteobacteria | Desulfovibrionales | Evolving | Labile | 2 | [FeFe]-centre, 2 x [4Fe4S] clusters | Small subunit |
| WP_027179345.1 | Desulfovibrio bastinii | [FeFe] Group A1 | Deltaproteobacteria | Desulfovibrionales | Evolving | Labile | 2 | [FeFe]-centre, 2 x [4Fe4S] clusters | Small subunit |
| WP_027183226.1 | Desulfovibrio inopinatus | [FeFe] Group A1 | Deltaproteobacteria | Desulfovibrionales | Evolving | Labile | 2 | [FeFe]-centre, 2 x [4Fe4S] clusters | Small subunit |
| WP_027191878.1 | Desulfovibrio putealis | [FeFe] Group A1 | Deltaproteobacteria | Desulfovibrionales | Evolving | Labile | 2 | [FeFe]-centre, 2 x [4Fe4S] clusters | Small subunit |
| WP_027722058.1 | Desulfovibrio zosterae | [FeFe] Group A1 | Deltaproteobacteria | Desulfovibrionales | Evolving | Labile | 2 | [FeFe]-centre, 2 x [4Fe4S] clusters | Small subunit |
| WP_028586843.1 | Desulfocurvus vexinensis | [FeFe] Group A1 | Deltaproteobacteria | Desulfovibrionales | Evolving | Labile | 2 | [FeFe]-centre, 2 x [4Fe4S] clusters | Small subunit |
| WP_013637988.1 | Desulfurobacterium thermolithotrophum | [NiFe] Group 3c | Aquificae | Desulfurobacteriales | Bifurcating | Sensitive | 4 | [NiFe]-centre, 3 x [4Fe4S] clusters | Polyferredoxin, [FeS] protein |
| WP_022775381.1 | Symbiobacter mobilis | [NiFe] Group 3c | Betaproteobacteria | Burkholderiales | Bifurcating | Sensitive | 4 | [NiFe]-centre, 3 x [4Fe4S] clusters | Polyferredoxin, [FeS] protein |
| WP_006930005.1 | Caldithrix abyssi | [NiFe] Group 3c | Caldithrix | Caldithrixales | Bifurcating | Sensitive | 4 | [NiFe]-centre, 3 x [4Fe4S] clusters | Polyferredoxin, [FeS] protein |
| WP_010936390.1 | Dehalococcoides mccartyi | [NiFe] Group 3c | Chloroflexi | Dehalococcoidales | Bifurcating | Sensitive | 4 | [NiFe]-centre, 3 x [4Fe4S] clusters | Polyferredoxin, [FeS] protein |
| WP_013218178.1 | Dehalogenimonas lykanthroporepellens | [NiFe] Group 3c | Chloroflexi | Dehalogenimonas | Bifurcating | Sensitive | 4 | [NiFe]-centre, 3 x [4Fe4S] clusters | Polyferredoxin, [FeS] protein |
| WP_015903075.1 | Desulfobacterium autotrophicum | [NiFe] Group 3c | Deltaproteobacteria | Desulfobacterales | Bifurcating | Sensitive | 4 | [NiFe]-centre, 3 x [4Fe4S] clusters | Polyferredoxin, [FeS] protein |
| WP_028318776.1 | Desulfobulbus elongatus | [NiFe] Group 3c | Deltaproteobacteria | Desulfobacterales | Bifurcating | Sensitive | 4 | [NiFe]-centre, 3 x [4Fe4S] clusters | Polyferredoxin, [FeS] protein |
| WP_028317553.1 | Desulfobulbus elongatus | [NiFe] Group 3c | Deltaproteobacteria | Desulfobacterales | Bifurcating | Sensitive | 4 | [NiFe]-centre, 3 x [4Fe4S] clusters | Polyferredoxin, [FeS] protein |
| WP_028580885.1 | Desulfobulbus japonicus | [NiFe] Group 3c | Deltaproteobacteria | Desulfobacterales | Bifurcating | Sensitive | 4 | [NiFe]-centre, 3 x [4Fe4S] clusters | Polyferredoxin, [FeS] protein |
| WP_028580860.1 | Desulfobulbus japonicus | [NiFe] Group 3c | Deltaproteobacteria | Desulfobacterales | Bifurcating | Sensitive | 4 | [NiFe]-centre, 3 x [4Fe4S] clusters | Polyferredoxin, [FeS] protein |
| WP_028584591.1 | Desulfobulbus mediterraneus | [NiFe] Group 3c | Deltaproteobacteria | Desulfobacterales | Bifurcating | Sensitive | 4 | [NiFe]-centre, 3 x [4Fe4S] clusters | Polyferredoxin, [FeS] protein |
| WP_028583859.1 | Desulfobulbus mediterraneus | [NiFe] Group 3c | Deltaproteobacteria | Desulfobacterales | Bifurcating | Sensitive | 4 | [NiFe]-centre, 3 x [4Fe4S] clusters | Polyferredoxin, [FeS] protein |
| WP_015724435.1 | Desulfobulbus propionicus | [NiFe] Group 3c | Deltaproteobacteria | Desulfobacterales | Bifurcating | Sensitive | 4 | [NiFe]-centre, 3 x [4Fe4S] clusters | Polyferredoxin, [FeS] protein |
| WP_015722755.1 | Desulfobulbus propionicus | [NiFe] Group 3c | Deltaproteobacteria | Desulfobacterales | Bifurcating | Sensitive | 4 | [NiFe]-centre, 3 x [4Fe4S] clusters | Polyferredoxin, [FeS] protein |