| Orth | Species | Gene | Name | Description | Fitness | %Id | Cov |
| | Methanococcus maripaludis S2 | MMP_RS03090 | | cation:proton antiporter | strong | 100 | 100 |
| o | Methanococcus maripaludis JJ | MMJJ_RS01980 | | cation:proton antiporter | strong | 99 | 100 |
| | Pontibacter actiniarum KMM 6156, DSM 19842 | CA264_17300 | | cation/H(+) antiporter | sig. | 30 | 94 |
| | Phocaeicola vulgatus CL09T03C04 | HMPREF1058_RS00205 | | cation:proton antiporter | strong | 28 | 74 |
| | Methanococcus maripaludis JJ | MMJJ_RS04925 | | cation:proton antiporter | insig. | 28 | 91 |
| | Methanococcus maripaludis S2 | MMP_RS00560 | | cation:proton antiporter | sig. | 28 | 91 |
| | Phocaeicola dorei CL03T12C01 | ABI39_RS01105 | | cation:proton antiporter | insig. | 28 | 74 |
| | Synechocystis sp000284455 PCC 6803 | SGL_RS14400 | | cation:proton antiporter | strong | 27 | 94 |
| | Bacteroides ovatus ATCC 8483 | BACOVA_03471 | | universal stress family protein | strong | 28 | 74 |
| | Bacteroides thetaiotaomicron VPI-5482 | BT3638 | | Na+/H+ anti-porter (NCBI ptt file) | sig. | 27 | 74 |
| | Rhodanobacter sp. FW510-T8 | OKGIIK_07520 | kefB | cation:proton antiporter | no data | 26 | 98 |
| | Dyella japonica UNC79MFTsu3.2 | ABZR86_RS01860 | | cation:proton antiporter | no data | 26 | 98 |
| | Bacteroides thetaiotaomicron VPI-5482 | BT1783 | | cation/H+ antiporter (NCBI ptt file) | insig. | 26 | 88 |
| | Rhodanobacter sp000427505 FW510-R12 | LRK53_RS11575 | | cation:proton antiporter | no data | 26 | 97 |
| | Rhodanobacter denitrificans MT42 | LRK55_RS17645 | | cation:proton antiporter | no data | 26 | 99 |
| | Methanococcus maripaludis JJ | MMJJ_RS00650 | | cation:proton antiporter | insig. | 28 | 97 |
| | Rhodanobacter denitrificans FW104-10B01 | LRK54_RS17425 | | cation:proton antiporter | no data | 26 | 99 |
| | Bacteroides ovatus ATCC 8483 | BACOVA_03049 | | transporter, CPA2 family | insig. | 27 | 70 |
| | Bacteroides stercoris CC31F | HMPREF1181_RS03120 | | cation:proton antiporter | sig. | 26 | 76 |
| | Shewanella loihica PV-4 | Shew_3217 | | sodium/hydrogen exchanger (RefSeq) | insig. | 27 | 94 |
| | Methanococcus maripaludis S2 | MMP_RS04495 | | cation:proton antiporter | sig. | 29 | 74 |
| | Bacteroides ovatus ATCC 8483 | BACOVA_04510 | | transporter, CPA2 family | insig. | 25 | 93 |
| o | Methylophilus sp. DMC18 | GFF1111 | | Na(+)/H(+)-K(+) antiporter GerN | insig. | 24 | 97 |
| | Phocaeicola dorei CL03T12C01 | ABI39_RS09600 | | cation:proton antiporter | insig. | 23 | 93 |
| | Parabacteroides merdae CL09T00C40 | HMPREF1078_RS09890 | | cation:proton antiporter | strong | 24 | 95 |
| | Synechococcus elongatus PCC 7942 | Synpcc7942_0546 | nha4 | Na+/H+ antiporter | strong | 27 | 95 |
| o | Synechococcus elongatus PCC 7942 | Synpcc7942_0307 | napA | Na+/H+ antiporter | strong | 26 | 72 |
| | Pseudomonas sp. SVBP6 | COO64_RS01860 | | cation:proton antiporter | insig. | 24 | 93 |
| | Pseudomonas sp. RS175 | PFR28_04526 | | Glutathione-regulated potassium-efflux system protein KefB | insig. | 26 | 95 |
| | Pseudomonas putida KT2440 | PP_5355 | | putative Sodium/proton antiporter | insig. | 24 | 93 |
| | Variovorax sp. SCN45 | GFF4684 | | Na+/H+ antiporter | insig. | 22 | 93 |
| | Serratia liquefaciens MT49 | IAI46_03205 | | glutathione-regulated potassium-efflux system protein KefC | insig. | 23 | 71 |
| | Kangiella aquimarina DSM 16071 | B158DRAFT_1670 | | Kef-type K+ transport systems, membrane components | insig. | 23 | 94 |
| | Pseudomonas fluorescens GW456-L13 | PfGW456L13_720 | | putative Glutathione-regulated potassium-efflux system protein KefB | insig. | 25 | 93 |
| | Pseudomonas sp. DMC3 | GFF515 | | Glutathione-regulated potassium-efflux system protein KefB | cofit | 25 | 93 |
| | Pseudomonas fluorescens FW300-N2E2 | Pf6N2E2_4270 | | putative Glutathione-regulated potassium-efflux system protein KefB | insig. | 24 | 95 |
| | Pseudomonas fluorescens FW300-N2E3 | AO353_10075 | | potassium transporter | insig. | 25 | 93 |
| | Pseudomonas sp. BP01 | JOY50_RS08720 | | cation:proton antiporter | insig. | 24 | 93 |
| | Pseudomonas fluorescens FW300-N1B4 | Pf1N1B4_2002 | | putative Glutathione-regulated potassium-efflux system protein KefB | insig. | 24 | 93 |
| | Pseudomonas fluorescens FW300-N2C3 | AO356_11975 | | potassium transporter | insig. | 25 | 95 |
| | Pseudomonas sp. SVBP6 | COO64_RS09190 | kefC | glutathione-regulated potassium-efflux system protein KefC | insig. | 24 | 71 |
| | Variovorax sp. OAS795 | ABID97_RS20710 | | cation:proton antiporter | no data | 21 | 93 |
| | Pseudomonas fluorescens SBW25 | PFLU_RS29915 | | cation:proton antiporter | insig. | 25 | 93 |
| | Pseudomonas fluorescens SBW25-INTG | PFLU_RS29915 | | cation:proton antiporter | sig. | 25 | 93 |
| | Pseudomonas syringae pv. syringae B728a | Psyr_5068 | | transporter, CPA2 family | insig. | 25 | 93 |
| | Pseudomonas syringae pv. syringae B728a ΔmexB | Psyr_5068 | | transporter, CPA2 family | insig. | 25 | 93 |
| | Pedobacter sp. GW460-11-11-14-LB5 | CA265_RS16170 | | sodium:proton antiporter | insig. | 24 | 76 |
| | Bacteroides ovatus ATCC 8483 | BACOVA_05380 | | TrkA C-terminal domain protein | insig. | 24 | 92 |
| | Pseudomonas fluorescens FW300-N2E3 | AO353_24375 | | potassium transporter KefC | insig. | 23 | 74 |
| | Cellulophaga baltica 18 | M666_RS16385 | | monovalent cation:proton antiporter-2 (CPA2) family protein | insig. | 25 | 88 |
| | Variovorax sp. OAS795 | ABID97_RS02635 | | monovalent cation:proton antiporter-2 (CPA2) family protein | sig. | 26 | 74 |
| | Pseudomonas simiae WCS417 | PS417_28255 | | potassium transporter | insig. | 25 | 93 |
| | Pseudomonas lactucae CFBP13502 | GEMAOFIL_00119 | | Glutathione-regulated potassium-efflux system protein KefB | cofit | 25 | 93 |
| | Bacteroides thetaiotaomicron VPI-5482 | BT4585 | | putative Na+/H+ anitporter (NCBI ptt file) | sig. | 24 | 92 |
| | Agrobacterium fabrum C58 | Atu0692 | | glutathione-regulated potassium-efflux system protein | strong | 22 | 98 |
| | Pontibacter actiniarum KMM 6156, DSM 19842 | CA264_05165 | | potassium transporter KefB | sig. | 26 | 94 |
| | Pseudomonas fluorescens FW300-N2C3 | AO356_22345 | | potassium transporter KefC | insig. | 24 | 71 |
| | Echinicola vietnamensis KMM 6221, DSM 17526 | Echvi_2814 | | Kef-type K+ transport systems, membrane components | sig. | 26 | 94 |
| | Pseudomonas sp. S08-1 | OH686_17420 | | sodium/hydrogen exchanger | insig. | 23 | 93 |
| | Cellulophaga baltica 18 | M666_RS15605 | | cation:proton antiporter | insig. | 26 | 52 |
| | Bacteroides ovatus ATCC 8483 | BACOVA_05448 | | TrkA C-terminal domain protein | insig. | 25 | 72 |
| | Pseudomonas fluorescens FW300-N2E2 | Pf6N2E2_339 | | Glutathione-regulated potassium-efflux system protein KefC | insig. | 23 | 71 |
| | Xanthomonas campestris pv. campestris strain 8004 | Xcc-8004.1851.1 | | Cation:proton antiporter | insig. | 23 | 96 |
| | Xanthomonas campestris pv. campestris strain 8004 | Xcc-8004.5067.1 | | Glutathione-regulated potassium-efflux system protein KefC | insig. | 26 | 72 |
| | Alteromonas macleodii MIT1002 | MIT1002_01563 | | K(+)/H(+) antiporter | insig. | 28 | 74 |
| | Brevundimonas sp. GW460-12-10-14-LB2 | A4249_RS02040 | | cation:proton antiporter | insig. | 23 | 98 |
| | Agrobacterium fabrum C58 | Atu1693 | | glutathione-regulated potassium-efflux system protein | insig. | 26 | 77 |
| | Salmonella enterica subsp. enterica serovar Typhimurium str. MS1868 | GFF194 | | Glutathione-regulated potassium-efflux system protein KefC | insig. | 23 | 73 |
| | Rhodanobacter sp. FW510-T8 | OKGIIK_07940 | | Potassium transporter | insig. | 22 | 95 |
| | Pseudomonas aeruginosa MRSN321 | DY961_RS25950 | | cation:proton antiporter | insig. | 23 | 93 |
| | Pseudomonas aeruginosa PUPa3 | DQ20_RS58375 | | cation:proton antiporter | sig. | 23 | 93 |
| | Pseudomonas aeruginosa PA14 | IKLFDK_25765 | | cation/H(+) antiporter | insig. | 23 | 93 |
| | Rahnella sp. WP5 | EX31_RS03815 | | glutathione-regulated potassium-efflux system protein KefC | insig. | 24 | 74 |
| | Phocaeicola vulgatus CL09T03C04 | HMPREF1058_RS04690 | | cation:proton antiporter | strong | 24 | 70 |
| | Shewanella oneidensis MR-1 | SO1647 | | glutathione-regulated potassium-efflux system protein KefB, putative (NCBI ptt file) | insig. | 24 | 72 |
| | Dickeya dadantii 3937 | DDA3937_RS19405 | | glutathione-regulated potassium-efflux system protein KefB | cofit | 26 | 77 |
| | Caulobacter crescentus NA1000 | CCNA_00204 | | glutathione-regulated potassium-efflux system protein kefB | sig. | 25 | 71 |
| | Caulobacter crescentus NA1000 Δfur | CCNA_00204 | | glutathione-regulated potassium-efflux system protein kefB | cofit | 25 | 71 |
| | Phocaeicola dorei CL03T12C01 | ABI39_RS18945 | | cation:proton antiporter | cofit | 24 | 70 |
| | Enterobacter asburiae PDN3 | EX28DRAFT_3641 | | transporter, monovalent cation:proton antiporter-2 (CPA2) family | insig. | 22 | 73 |
| | Enterobacter sp. TBS_079 | MPMX20_00743 | | Glutathione-regulated potassium-efflux system protein KefC | insig. | 22 | 73 |
| | Serratia liquefaciens MT49 | IAI46_23515 | | glutathione-regulated potassium-efflux system protein KefB | insig. | 25 | 73 |
| | Dickeya dianthicola ME23 | DZA65_RS20615 | | glutathione-regulated potassium-efflux system protein KefB | insig. | 27 | 77 |
| | Shewanella oneidensis MR-1 | SO1481 | | glutathione-regulated potassium-efflux system protein (NCBI ptt file) | strong | 25 | 68 |
| | Cupriavidus basilensis FW507-4G11 | RR42_RS04680 | | potassium transporter Kef | insig. | 24 | 74 |
| | Shewanella sp. ANA-3 | Shewana3_2797 | | potassium efflux system protein (RefSeq) | insig. | 24 | 93 |
| | Herbaspirillum seropedicae SmR1 | HSERO_RS17340 | | potassium transporter | insig. | 21 | 93 |
| | Dickeya dianthicola 67-19 | HGI48_RS19525 | | glutathione-regulated potassium-efflux system protein KefB | insig. | 26 | 77 |
| | Paraburkholderia sabiae LMG 24235 | QEN71_RS03940 | | cation:proton antiporter | cofit | 24 | 93 |
| | Shewanella sp. ANA-3 | Shewana3_2945 | | potassium efflux system protein (RefSeq) | insig. | 25 | 68 |
| | Burkholderia phytofirmans PsJN | BPHYT_RS15050 | | potassium transporter | insig. | 23 | 93 |
| | Bacteroides thetaiotaomicron VPI-5482 | BT1101 | | putative sodium/proton antiporter (NCBI ptt file) | insig. | 23 | 70 |
| | Escherichia fergusonii Becca | EFB2_03998 | | Glutathione-regulated potassium-efflux system protein KefC | insig. | 22 | 74 |
| | Variovorax sp. SCN45 | GFF3272 | | Inner membrane protein, KefB/KefC family | insig. | 25 | 68 |
| | Acinetobacter baumannii LAC-4 | RR41_RS17155 | | monovalent cation:proton antiporter-2 (CPA2) family protein | insig. | 26 | 71 |
| | Ralstonia sp. UNC404CL21Col | ABZR87_RS07090 | | monovalent cation:proton antiporter family protein | cofit | 25 | 75 |
| | Cupriavidus basilensis FW507-4G11 | RR42_RS02110 | | potassium transporter | insig. | 26 | 69 |
| | Ralstonia solanacearum PSI07 | RPSI07_RS22100 | | potassium transporter | cofit | 25 | 75 |
| | Dechlorosoma suillum PS | Dsui_3384 | | transporter, monovalent cation:proton antiporter-2 (CPA2) family | insig. | 23 | 69 |
| | Rhodanobacter denitrificans MT42 | LRK55_RS16615 | | cation:proton antiporter | cofit | 23 | 92 |