| Orth | Species | Gene | Name | Description | Fitness | %Id | Cov |
| | Pseudomonas putida KT2440 | PP_0312 | | electron transfer flavoprotein, alpha subunit | strong | 100 | 100 |
| o | Pseudomonas sp. BP01 | JOY50_RS25620 | | electron transfer flavoprotein subunit alpha/FixB family protein | insig. | 96 | 100 |
| o | Pseudomonas sp. SVBP6 | COO64_RS00100 | | electron transfer flavoprotein subunit alpha/FixB family protein | insig. | 88 | 100 |
| o | Pseudomonas fluorescens FW300-N2E3 | AO353_07700 | | electron transfer flavoprotein subunit alpha | strong | 84 | 100 |
| o | Pseudomonas fluorescens FW300-N1B4 | Pf1N1B4_2441 | | Electron transfer flavoprotein, alpha subunit | sig. | 83 | 100 |
| o | Pseudomonas sp. DMC3 | GFF114 | | Protein FixB | cofit | 83 | 100 |
| o | Pseudomonas fluorescens GW456-L13 | PfGW456L13_1105 | | Electron transfer flavoprotein, alpha subunit | insig. | 82 | 100 |
| o | Pseudomonas lactucae CFBP13502 | GEMAOFIL_05372 | | Protein FixB | cofit | 81 | 100 |
| o | Pseudomonas fluorescens FW300-N2C3 | AO356_13915 | | electron transfer flavoprotein subunit alpha | strong | 84 | 100 |
| o | Pseudomonas fluorescens FW300-N2E2 | Pf6N2E2_4705 | | Electron transfer flavoprotein, alpha subunit | strong | 83 | 100 |
| o | Pseudomonas simiae WCS417 | PS417_26230 | | electron transfer flavoprotein subunit alpha | strong | 80 | 100 |
| o | Pseudomonas orientalis W4I3 | QF045_RS00620 | | electron transfer flavoprotein subunit alpha/FixB family protein | insig. | 82 | 100 |
| o | Pseudomonas fluorescens SBW25 | PFLU_RS27875 | | electron transfer flavoprotein subunit alpha/FixB family protein | insig. | 82 | 100 |
| o | Pseudomonas fluorescens SBW25-INTG | PFLU_RS27875 | | electron transfer flavoprotein subunit alpha/FixB family protein | strong | 82 | 100 |
| o | Pseudomonas sp. RS175 | PFR28_04145 | | Protein FixB | strong | 83 | 100 |
| o | Pseudomonas syringae pv. syringae B728a | Psyr_4780 | | Electron transfer flavoprotein, alpha subunit | insig. | 78 | 100 |
| o | Pseudomonas syringae pv. syringae B728a ΔmexB | Psyr_4780 | | Electron transfer flavoprotein, alpha subunit | insig. | 78 | 100 |
| o | Pseudomonas segetis P6 | ACVTMO_RS03455 | etfA | electron transfer flavoprotein subunit alpha | strong | 73 | 100 |
| o | Pseudomonas aeruginosa PA14 | IKLFDK_26430 | | electron transfer flavoprotein subunit alpha | strong | 75 | 100 |
| o | Pseudomonas aeruginosa MRSN321 | DY961_RS25265 | | electron transfer flavoprotein subunit alpha/FixB family protein | strong | 74 | 100 |
| o | Pseudomonas aeruginosa PUPa3 | DQ20_RS43575 | | electron transfer flavoprotein subunit alpha/FixB family protein | strong | 74 | 100 |
| o | Azospirillum sp. SherDot2 | MPMX19_04723 | | Protein FixB | insig. | 38 | 98 |
| | Paraburkholderia sabiae LMG 24235 | QEN71_RS08335 | | electron transfer flavoprotein subunit alpha/FixB family protein | insig. | 39 | 78 |
| | Ralstonia solanacearum GMI1000 | RS_RS17485 | | electron transfer flavoprotein subunit alpha/FixB family protein | insig. | 40 | 68 |
| o | Paraburkholderia graminis OAS925 | ABIE53_006133 | | electron transfer flavoprotein alpha subunit | insig. | 36 | 81 |
| o | Paraburkholderia bryophila 376MFSha3.1 | H281DRAFT_02473 | | electron transfer flavoprotein alpha subunit apoprotein | sig. | 36 | 83 |
| o | Burkholderia phytofirmans PsJN | BPHYT_RS25205 | | electron transfer flavoprotein subunit alpha | strong | 36 | 83 |
| | Fusobacterium nucleatum SB010 | HUW76_04760 | | electron transfer flavoprotein subunit alpha/FixB family protein | cofit | 29 | 74 |
| | Paraburkholderia sabiae LMG 24235 | QEN71_RS42225 | | electron transfer flavoprotein subunit alpha/FixB family protein | cofit | 28 | 82 |
| | Echinicola vietnamensis KMM 6221, DSM 17526 | Echvi_2952 | | Electron transfer flavoprotein, alpha subunit | no data | 44 | 30 |
| | Rhodanobacter sp000427505 FW510-R12 | LRK53_RS04435 | | electron transfer flavoprotein subunit alpha/FixB family protein | insig. | 35 | 54 |
| | Mucilaginibacter yixingensis YX-36 DSM 26809 | ABZR88_RS09170 | | electron transfer flavoprotein subunit alpha/FixB family protein | cofit | 39 | 30 |
| | Ralstonia solanacearum IBSBF1503 | RALBFv3_RS13860 | | electron transfer flavoprotein subunit alpha | no data | 44 | 28 |
| | Rhodanobacter sp. FW510-T8 | OKGIIK_01255 | fixB | electron transfer flavoprotein subunit alpha | strong | 30 | 73 |
| | Pseudomonas sp. BP01 | JOY50_RS13730 | | electron transfer flavoprotein subunit alpha/FixB family protein | no data | 32 | 61 |
| | Pseudomonas sp. DMC3 | GFF4717 | | Electron transfer flavoprotein subunit alpha | no data | 29 | 61 |
| | Rhodanobacter denitrificans MT42 | LRK55_RS05320 | | FAD-binding protein | strong | 30 | 73 |
| | Kangiella aquimarina DSM 16071 | B158DRAFT_1453 | | electron transfer flavoprotein alpha subunit apoprotein | strong | 29 | 62 |
| | Xanthomonas campestris pv. campestris strain 8004 | Xcc-8004.4488.1 | | Electron transfer flavoprotein, alpha subunit | no data | 43 | 28 |
| | Pontibacter actiniarum KMM 6156, DSM 19842 | CA264_08115 | | electron transfer flavoprotein subunit alpha | strong | 41 | 29 |
| | Paraburkholderia bryophila 376MFSha3.1 | H281DRAFT_04285 | | electron transfer flavoprotein alpha subunit apoprotein | no data | 44 | 28 |
| | Paraburkholderia graminis OAS925 | ABIE53_003135 | | electron transfer flavoprotein alpha subunit | no data | 44 | 28 |
| | Paraburkholderia bryophila 376MFSha3.1 | H281DRAFT_05996 | | Electron transfer flavoprotein, alpha subunit | no data | 45 | 27 |
| | Paraburkholderia bryophila 376MFSha3.1 | H281DRAFT_03367 | | electron transfer flavoprotein alpha subunit apoprotein | insig. | 44 | 28 |
| | Azospirillum sp. SherDot2 | MPMX19_00075 | | Electron transfer flavoprotein subunit alpha | insig. | 45 | 28 |
| | Rhodanobacter sp000427505 FW510-R12 | LRK53_RS10675 | | FAD-binding protein | insig. | 42 | 28 |
| | Magnetospirillum magneticum AMB-1 | AMB_RS19755 | | electron transfer flavoprotein subunit alpha | no data | 44 | 27 |
| | Pseudomonas putida KT2440 | PP_4201 | | Electron transfer flavoprotein subunit alpha | no data | 31 | 61 |
| | Magnetospirillum magneticum AMB-1 | AMB_RS13250 | | electron transfer flavoprotein subunit alpha | insig. | 44 | 28 |
| | Magnetospirillum magneticum AMB-1 | AMB_RS16305 | | electron transfer flavoprotein subunit alpha | no data | 42 | 29 |
| | Pedobacter sp. GW460-11-11-14-LB5 | CA265_RS08865 | | electron transfer flavoprotein subunit alpha | no data | 35 | 32 |
| | Hydrogenophaga sp. GW460-11-11-14-LB1 | GFF880 | | Electron transfer flavoprotein, alpha subunit | insig. | 32 | 62 |
| | Pseudomonas aeruginosa MRSN321 | DY961_RS02220 | | FAD-binding protein | no data | 31 | 59 |
| | Pseudomonas aeruginosa PA14 | IKLFDK_15010 | | Electron transfer flavoprotein subunit alpha | no data | 31 | 59 |
| | Pseudomonas aeruginosa PUPa3 | DQ20_RS33365 | | FAD-binding protein | no data | 31 | 59 |
| | Rhodopseudomonas palustris CGA009 | TX73_023915 | | electron transfer flavoprotein subunit alpha/FixB family protein | strong | 26 | 81 |
| | Pseudomonas stutzeri RCH2 | Psest_1706 | | Electron transfer flavoprotein, alpha subunit | no data | 46 | 27 |
| | Sphingobium sp. HT1-2 | GFF1705 | | Electron transfer flavoprotein, alpha subunit | no data | 45 | 25 |
| | Fusobacterium nucleatum SB010 | HUW76_09415 | | electron transfer flavoprotein subunit alpha/FixB family protein | strong | 37 | 30 |
| | Shewanella amazonensis SB2B | Sama_1170 | | electron transfer flavoprotein, alpha subunit (RefSeq) | strong | 47 | 25 |
| | Alteromonas macleodii MIT1002 | MIT1002_02286 | | Electron transfer flavoprotein large subunit | strong | 44 | 27 |
| | Ralstonia sp. UNC404CL21Col | ABZR87_RS09550 | | FAD-binding protein | no data | 50 | 22 |
| | Pseudomonas syringae pv. syringae B728a | Psyr_1996 | | Electron transfer flavoprotein, alpha subunit | no data | 47 | 25 |
| | Pseudomonas syringae pv. syringae B728a ΔmexB | Psyr_1996 | | Electron transfer flavoprotein, alpha subunit | no data | 47 | 25 |
| | Rhodanobacter denitrificans FW104-10B01 | LRK54_RS05550 | | FAD-binding protein | cofit | 41 | 28 |
| | Xanthobacter sp. DMC5 | GFF4893 | | Caffeyl-CoA reductase-Etf complex subunit CarE | insig. | 27 | 82 |
| | Paraburkholderia sabiae LMG 24235 | QEN71_RS04180 | | electron transfer flavoprotein subunit alpha/FixB family protein | no data | 42 | 28 |
| | Azospirillum brasilense Sp245 | AZOBR_RS16915 | | electron transfer flavoprotein subunit beta | insig. | 41 | 29 |
| | Sphingomonas koreensis DSMZ 15582 | Ga0059261_2280 | | Electron transfer flavoprotein, alpha subunit | no data | 43 | 28 |
| | Sphingomonas koreensis DSMZ 15582 | Ga0059261_2885 | | Electron transfer flavoprotein, alpha subunit | insig. | 43 | 28 |
| | Dechlorosoma suillum PS | Dsui_2304 | | electron transfer flavoprotein, alpha subunit | strong | 43 | 28 |
| | Pseudomonas fluorescens FW300-N1B4 | Pf1N1B4_5613 | | Electron transfer flavoprotein, alpha subunit | insig. | 31 | 61 |
| | Pseudomonas fluorescens FW300-N2E2 | Pf6N2E2_5984 | | Electron transfer flavoprotein, alpha subunit | no data | 45 | 25 |
| | Pseudomonas sp. SVBP6 | COO64_RS18830 | | electron transfer flavoprotein subunit alpha/FixB family protein | no data | 30 | 61 |
| | Pseudomonas fluorescens SBW25 | PFLU_RS22915 | | electron transfer flavoprotein subunit alpha | no data | 45 | 25 |
| | Pseudomonas fluorescens SBW25-INTG | PFLU_RS22915 | | electron transfer flavoprotein subunit alpha | no data | 45 | 25 |
| | Pseudomonas lactucae CFBP13502 | GEMAOFIL_04401 | | Electron transfer flavoprotein subunit alpha | no data | 45 | 25 |
| | Pseudomonas sp. RS175 | PFR28_02977 | | Electron transfer flavoprotein subunit alpha | no data | 45 | 25 |
| | Pseudomonas orientalis W4I3 | QF045_RS23380 | | FAD-binding protein | no data | 45 | 25 |
| | Pseudomonas syringae pv. syringae B728a | Psyr_2173 | | Electron transfer flavoprotein, alpha subunit | insig. | 45 | 25 |
| | Pseudomonas syringae pv. syringae B728a ΔmexB | Psyr_2173 | | Electron transfer flavoprotein, alpha subunit | insig. | 45 | 25 |
| | Pseudomonas simiae WCS417 | PS417_21295 | | electron transfer flavoprotein subunit beta | no data | 45 | 25 |
| | Pseudomonas fluorescens FW300-N2C3 | AO356_20325 | | electron transfer flavoprotein subunit beta | no data | 45 | 25 |
| | Lysobacter sp. OAE881 | ABIE51_RS04360 | | electron transfer flavoprotein subunit alpha/FixB family protein | no data | 43 | 27 |
| | Pseudomonas fluorescens FW300-N1B4 | Pf1N1B4_391 | | Electron transfer flavoprotein, alpha subunit | no data | 41 | 29 |
| | Pseudomonas fluorescens FW300-N2E3 | AO353_01230 | | electron transfer flavoprotein subunit beta | no data | 41 | 29 |
| | Azospirillum brasilense Sp245 | AZOBR_RS29735 | | electron transfer flavoprotein subunit beta | no data | 43 | 28 |
| | Cellulophaga baltica 18 | M666_RS08080 | | electron transfer flavoprotein subunit alpha/FixB family protein | no data | 36 | 30 |
| | Pseudomonas sp. S08-1 | OH686_04225 | | Electron transfer flavoprotein, alpha subunit | no data | 45 | 25 |
| | Pseudomonas fluorescens GW456-L13 | PfGW456L13_2137 | | Electron transfer flavoprotein, alpha subunit | no data | 45 | 25 |
| | Paraburkholderia sabiae LMG 24235 | QEN71_RS06645 | | electron transfer flavoprotein subunit alpha/FixB family protein | insig. | 42 | 29 |
| | Mycobacterium tuberculosis H37Rv | Rv3028c | | Probable electron transfer flavoprotein (alpha-subunit) FixB (alpha-ETF) (electron transfer flavoprotein large subunit) (ETFLS) | no data | 40 | 28 |
| | Methylophilus sp. DMC18 | GFF121 | | Caffeyl-CoA reductase-Etf complex subunit CarE | insig. | 39 | 30 |
| | Pseudomonas segetis P6 | ACVTMO_RS10570 | | electron transfer flavoprotein subunit alpha/FixB family protein | no data | 30 | 59 |
| | Ralstonia solanacearum GMI1000 | RS_RS04595 | | electron transfer flavoprotein subunit alpha | no data | 49 | 22 |
| | Burkholderia phytofirmans PsJN | BPHYT_RS14800 | | electron transfer flavoprotein subunit beta | no data | 43 | 28 |
| | Sinorhizobium meliloti 1021 | SMa0819 | | FixB electron transfer flavoprotein alpha chain | insig. | 41 | 29 |
| | Brevundimonas sp. GW460-12-10-14-LB2 | A4249_RS13870 | | electron transfer flavoprotein subunit alpha/FixB family protein | no data | 41 | 28 |
| | Paraburkholderia sabiae LMG 24235 | QEN71_RS38505 | | FAD-binding protein | insig. | 40 | 29 |
| | Ralstonia solanacearum PSI07 | RPSI07_RS19610 | | electron transfer flavoprotein subunit alpha | no data | 49 | 22 |