| Orth | Species | Gene | Name | Description | Fitness | %Id | Cov |
| | Magnetospirillum magneticum AMB-1 | AMB_RS08060 | | RNA polymerase sigma factor | cofit | 100 | 100 |
| o | Rhodopseudomonas palustris CGA009 | TX73_021225 | | sigma-70 family RNA polymerase sigma factor | insig. | 51 | 90 |
| o | Rhodospirillum rubrum S1H | Rru_A1809 | | Sigma-24 (FecI) (NCBI) | strong | 45 | 98 |
| o | Herbaspirillum seropedicae SmR1 | HSERO_RS15420 | | RNA polymerase subunit sigma-24 | insig. | 30 | 95 |
| o | Paraburkholderia graminis OAS925 | ABIE53_002123 | | RNA polymerase sigma factor (sigma-70 family) | sig. | 34 | 89 |
| o | Burkholderia phytofirmans PsJN | BPHYT_RS21530 | | RNA polymerase subunit sigma-24 | insig. | 31 | 93 |
| o | Paraburkholderia bryophila 376MFSha3.1 | H281DRAFT_00202 | | RNA polymerase sigma factor, sigma-70 family | insig. | 31 | 94 |
| o | Paraburkholderia sabiae LMG 24235 | QEN71_RS14060 | | sigma-70 family RNA polymerase sigma factor | insig. | 30 | 94 |
| | Dechlorosoma suillum PS | Dsui_2099 | | RNA polymerase sigma factor, sigma-70 family | no data | 33 | 89 |
| | Pedobacter sp. GW460-11-11-14-LB5 | CA265_RS21740 | | RNA polymerase sigma factor | sig. | 30 | 83 |
| o | Klebsiella michiganensis M5al | BWI76_RS14070 | | ECF subfamily RNA polymerase sigma-24 subunit | no data | 34 | 89 |
| | Sinorhizobium meliloti 1021 | SMc01419 | | RNA polymerase sigma factor protein | sig. | 37 | 75 |
| | Ralstonia solanacearum PSI07 | RPSI07_RS10230 | | RNA polymerase sigma factor | no data | 40 | 65 |
| | Azospirillum brasilense Sp245 | AZOBR_RS06360 | | RNA polymerase subunit sigma-24 | no data | 35 | 73 |
| | Rhizobium sp. OAE497 | ABIE40_RS11455 | | RNA polymerase sigma factor | insig. | 35 | 71 |
| | Ralstonia solanacearum GMI1000 | RS_RS14950 | | RNA polymerase sigma factor | no data | 39 | 65 |
| | Ralstonia sp. UNC404CL21Col | ABZR87_RS02660 | | RNA polymerase sigma factor | insig. | 41 | 61 |
| | Cupriavidus basilensis FW507-4G11 | RR42_RS19070 | | DNA-directed RNA polymerase sigma-70 factor | insig. | 38 | 62 |
| | Agrobacterium fabrum C58 | Atu2030 | | ECF family sigma factor | insig. | 36 | 75 |
| | Enterobacter asburiae PDN3 | EX28DRAFT_1130 | | RNA polymerase sigma factor, sigma-70 family | insig. | 31 | 96 |
| | Ralstonia solanacearum IBSBF1503 | RALBFv3_RS07010 | | RNA polymerase sigma factor | no data | 40 | 65 |
| | Ralstonia solanacearum UW163 | UW163_RS06605 | | RNA polymerase sigma factor | no data | 40 | 65 |
| | Azospirillum sp. SherDot2 | MPMX19_00764 | | ECF RNA polymerase sigma factor EcfG | insig. | 32 | 78 |
| | Enterobacter sp. TBS_079 | MPMX20_02342 | | hypothetical protein | insig. | 31 | 94 |
| | Bacteroides ovatus ATCC 8483 | BACOVA_01066 | | hypothetical protein | insig. | 27 | 93 |
| | Rhizobium sp. OAE497 | ABIE40_RS20320 | | sigma-70 family RNA polymerase sigma factor | insig. | 33 | 75 |
| | Marinobacter adhaerens HP15 | HP15_342 | | RNA polymerase sigma factor SigE | insig. | 29 | 78 |
| | Azospirillum brasilense Sp245 | AZOBR_RS10625 | | RNA polymerase sigma-70 factor | insig. | 34 | 72 |
| | Azospirillum brasilense Sp245 | AZOBR_RS11020 | | RNA polymerase subunit sigma-70 | no data | 34 | 70 |
| | Rhizobium sp. OAE497 | ABIE40_RS27415 | | sigma-70 family RNA polymerase sigma factor | insig. | 29 | 77 |
| | Sphingobium sp. HT1-2 | GFF2028 | | hypothetical protein | cofit | 31 | 86 |
| | Burkholderia phytofirmans PsJN | BPHYT_RS08240 | | RNA polymerase subunit sigma-24 | sig. | 33 | 74 |
| | Sinorhizobium meliloti 1021 | SMc01506 | | RNA polymerase sigma factor | strong | 26 | 72 |
| | Hydrogenophaga sp. GW460-11-11-14-LB1 | GFF329 | | RNA polymerase sigma-54 factor RpoN | insig. | 30 | 73 |
| | Variovorax sp. SCN45 | GFF215 | | RNA polymerase sigma-54 factor RpoN | insig. | 30 | 73 |
| | Rhodopseudomonas palustris CGA009 | TX73_021900 | | sigma-70 family RNA polymerase sigma factor | strong | 28 | 69 |
| | Pseudomonas sp. DMC3 | GFF1465 | | ECF RNA polymerase sigma factor EcfG | insig. | 37 | 57 |
| | Paraburkholderia bryophila 376MFSha3.1 | H281DRAFT_05124 | | RNA polymerase sigma-70 factor, ECF subfamily | insig. | 33 | 72 |
| | Synechococcus elongatus PCC 7942 | Synpcc7942_2004 | sigI | RNA polymerase sigma factor | insig. | 28 | 89 |
| | Bacteroides thetaiotaomicron VPI-5482 | BT2198 | | RNA polymerase ECF-type sigma factor (NCBI ptt file) | insig. | 26 | 74 |
| | Fusobacterium nucleatum SB010 | HUW76_07635 | | RNA polymerase sigma factor | no data | 21 | 84 |
| | Echinicola vietnamensis KMM 6221, DSM 17526 | Echvi_4295 | | Predicted RNA polymerase sigma factor containing a TPR repeat domain | insig. | 30 | 70 |
| | Azospirillum sp. SherDot2 | MPMX19_01371 | | hypothetical protein | insig. | 35 | 74 |
| | Pseudomonas syringae pv. syringae B728a | Psyr_4731 | | Sigma-70 region 2:Sigma-70 region 4 | insig. | 29 | 95 |
| | Pseudomonas syringae pv. syringae B728a ΔmexB | Psyr_4731 | | Sigma-70 region 2:Sigma-70 region 4 | insig. | 29 | 95 |
| | Parabacteroides merdae CL09T00C40 | HMPREF1078_RS15765 | | RNA polymerase sigma factor | strong | 25 | 74 |
| | Paraburkholderia sabiae LMG 24235 | QEN71_RS23005 | | sigma-70 family RNA polymerase sigma factor | insig. | 31 | 74 |
| | Paraburkholderia graminis OAS925 | ABIE53_003919 | | RNA polymerase sigma-70 factor (ECF subfamily) | insig. | 30 | 70 |
| | Rhizobium sp. OAE497 | ABIE40_RS14450 | | RNA polymerase sigma factor | insig. | 26 | 72 |
| | Pontibacter actiniarum KMM 6156, DSM 19842 | CA264_19215 | | RNA polymerase subunit sigma | sig. | 24 | 80 |
| | Pseudomonas lactucae CFBP13502 | GEMAOFIL_03722 | | ECF RNA polymerase sigma factor EcfG | no data | 36 | 57 |
| | Cupriavidus basilensis FW507-4G11 | RR42_RS32410 | | RNA polymerase subunit sigma-24 | no data | 34 | 57 |
| | Agrobacterium fabrum C58 | Atu4160 | | RNA polymerase sigma factor | strong | 27 | 71 |
| | Pseudomonas syringae pv. syringae B728a | Psyr_1217 | | Sigma-70 region 2:Sigma-70 region 4 | strong | 27 | 94 |
| | Pseudomonas syringae pv. syringae B728a ΔmexB | Psyr_1217 | | Sigma-70 region 2:Sigma-70 region 4 | cofit | 27 | 94 |
| | Pseudomonas fluorescens FW300-N1B4 | Pf1N1B4_3977 | | RNA polymerase sigma-54 factor RpoN | insig. | 36 | 57 |
| | Pseudomonas simiae WCS417 | PS417_17070 | | RNA polymerase subunit sigma-24 | insig. | 36 | 67 |
| | Pseudomonas sp. RS175 | PFR28_01251 | | ECF RNA polymerase sigma factor EcfG | insig. | 35 | 67 |
| | Pseudomonas fluorescens FW300-N2E2 | Pf6N2E2_2200 | | RNA polymerase sigma-54 factor RpoN | sig. | 34 | 57 |
| | Pseudomonas fluorescens SBW25 | PFLU_RS19010 | | sigma-70 family RNA polymerase sigma factor | insig. | 33 | 57 |
| | Pseudomonas fluorescens SBW25-INTG | PFLU_RS19010 | | sigma-70 family RNA polymerase sigma factor | sig. | 33 | 57 |
| | Variovorax sp. OAS795 | ABID97_RS16445 | | sigma-70 family RNA polymerase sigma factor | no data | 33 | 69 |
| | Mucilaginibacter yixingensis YX-36 DSM 26809 | ABZR88_RS12920 | | RNA polymerase sigma-70 factor | cofit | 24 | 86 |
| | Paraburkholderia bryophila 376MFSha3.1 | H281DRAFT_01465 | | RNA polymerase sigma-70 factor, ECF subfamily | insig. | 30 | 72 |
| | Pseudomonas orientalis W4I3 | QF045_RS18740 | | sigma-70 family RNA polymerase sigma factor | insig. | 34 | 67 |
| | Paraburkholderia graminis OAS925 | ABIE53_002425 | | RNA polymerase sigma-70 factor (ECF subfamily) | insig. | 31 | 75 |
| | Mycobacterium tuberculosis H37Rv | Rv3223c | | Alternative RNA polymerase sigma-E factor (sigma-24) SigH (RPOE) | insig. | 28 | 92 |
| | Pseudomonas fluorescens FW300-N2E3 | AO353_20305 | | RNA polymerase subunit sigma-24 | no data | 35 | 57 |
| | Pseudomonas fluorescens FW300-N2C3 | AO356_01625 | | RNA polymerase subunit sigma-24 | insig. | 34 | 57 |
| | Paraburkholderia bryophila 376MFSha3.1 | H281DRAFT_06547 | | RNA polymerase sigma-70 factor, ECF subfamily | insig. | 30 | 71 |
| | Phaeobacter inhibens DSM 17395 | PGA1_c27070 | | RNA polymerase sigma factor 70 (ECF15 subgroup, ECF26 subgroup) | insig. | 26 | 69 |
| | Pseudomonas putida KT2440 | PP_2888 | | putative ECF sigma factor PrtI | no data | 27 | 74 |
| | Azospirillum sp. SherDot2 | MPMX19_00923 | | hypothetical protein | insig. | 29 | 73 |
| | Burkholderia phytofirmans PsJN | BPHYT_RS24740 | | RNA polymerase subunit sigma-24 | sig. | 31 | 74 |
| | Paraburkholderia bryophila 376MFSha3.1 | H281DRAFT_05041 | | RNA polymerase sigma-70 factor, ECF subfamily | insig. | 30 | 68 |
| | Synechococcus elongatus PCC 7942 | Synpcc7942_1923 | sigG | RNA polymerase sigma factor RpoE | strong | 28 | 73 |
| | Pseudomonas sp. BP01 | JOY50_RS05860 | | sigma-70 family RNA polymerase sigma factor | no data | 30 | 74 |
| | Sphingomonas koreensis DSMZ 15582 | Ga0059261_3411 | | RNA polymerase sigma factor, sigma-70 family | insig. | 29 | 77 |
| | Pseudomonas putida KT2440 | PP_3006 | | RNA polymerase sigma-70 factor, ECF subfamily | insig. | 28 | 92 |
| | Dinoroseobacter shibae DFL-12 | Dshi_3835 | | RNA polymerase, sigma-24 subunit, ECF subfamily (RefSeq) | insig. | 26 | 72 |
| | Pseudomonas fluorescens GW456-L13 | PfGW456L13_2582 | | RNA polymerase sigma-54 factor RpoN | insig. | 35 | 57 |
| | Azospirillum sp. SherDot2 | MPMX19_01197 | | ECF RNA polymerase sigma factor EcfG | insig. | 30 | 69 |
| | Sphingobium sp. HT1-2 | GFF4551 | | hypothetical protein | cofit | 27 | 74 |
| | Serratia liquefaciens MT49 | IAI46_11745 | | sigma-70 family RNA polymerase sigma factor | no data | 25 | 90 |
| | Hydrogenophaga sp. GW460-11-11-14-LB1 | GFF4350 | | RNA polymerase sigma-54 factor RpoN | insig. | 34 | 69 |
| | Phocaeicola dorei CL03T12C01 | ABI39_RS17450 | | RNA polymerase sigma factor | strong | 26 | 74 |
| | Phocaeicola vulgatus CL09T03C04 | HMPREF1058_RS03770 | | RNA polymerase sigma factor | strong | 26 | 74 |
| | Azospirillum brasilense Sp245 | AZOBR_RS14755 | | RNA polymerase sigma-70 factor | insig. | 30 | 69 |
| | Phaeobacter inhibens DSM 17395 | PGA1_c27510 | | 'RNA polymerase sigma factor (sigma-70 family; ECF11 subgroup)' | insig. | 25 | 84 |