| Orth | Species | Gene | Name | Description | Fitness | %Id | Cov |
| | Xanthobacter sp. DMC5 | GFF2972 | | ECF RNA polymerase sigma factor SigF | no data | 100 | 100 |
| o | Azospirillum sp. SherDot2 | MPMX19_04570 | | ECF RNA polymerase sigma factor SigF | insig. | 51 | 97 |
| o | Rhodopseudomonas palustris CGA009 | TX73_009325 | | sigma-70 family RNA polymerase sigma factor | insig. | 53 | 99 |
| o | Rhizobium sp. OAE497 | ABIE40_RS01010 | | sigma-70 family RNA polymerase sigma factor | insig. | 51 | 98 |
| | Rhizobium sp. OAE497 | ABIE40_RS19610 | | sigma-70 family RNA polymerase sigma factor | insig. | 43 | 97 |
| o | Brevundimonas sp. GW460-12-10-14-LB2 | A4249_RS01090 | | sigma-70 family RNA polymerase sigma factor | insig. | 42 | 98 |
| o | Sinorhizobium meliloti 1021 | SM_b20531 | | RNA polymerase sigma factor | insig. | 44 | 98 |
| o | Caulobacter crescentus NA1000 | CCNA_03362 | | ECF-family RNA polymerase sigma factor | strong | 44 | 99 |
| o | Caulobacter crescentus NA1000 Δfur | CCNA_03362 | | ECF-family RNA polymerase sigma factor | cofit | 44 | 99 |
| | Herbaspirillum seropedicae SmR1 | HSERO_RS16195 | | RNA polymerase sigma factor | insig. | 40 | 98 |
| | Bosea sp. OAE506 | ABIE41_RS02435 | | sigma-70 family RNA polymerase sigma factor | insig. | 38 | 97 |
| o | Pantoea agglomerans CFBP13505 P0401 | PagCFBP13505_RS13745 | | sigma-70 family RNA polymerase sigma factor | insig. | 39 | 96 |
| | Variovorax sp. OAS795 | ABID97_RS16825 | | sigma-70 family RNA polymerase sigma factor | insig. | 40 | 93 |
| | Acidovorax sp. GW101-3H11 | Ac3H11_1827 | | RNA polymerase sigma-70 factor, ECF subfamily | insig. | 37 | 99 |
| | Xanthobacter sp. DMC5 | GFF1206 | | ECF RNA polymerase sigma factor SigF | insig. | 37 | 98 |
| | Paraburkholderia sabiae LMG 24235 | QEN71_RS20845 | | sigma-70 family RNA polymerase sigma factor | insig. | 36 | 99 |
| | Burkholderia phytofirmans PsJN | BPHYT_RS25560 | | RNA polymerase sigma factor | insig. | 36 | 97 |
| | Burkholderia phytofirmans PsJN | BPHYT_RS25505 | | RNA polymerase sigma factor | insig. | 35 | 99 |
| o | Pantoea sp. MT58 | IAI47_20240 | | sigma-70 family RNA polymerase sigma factor | insig. | 37 | 96 |
| | Agrobacterium fabrum C58 | Atu2268 | | ECF family sigma factor | insig. | 43 | 93 |
| | Sphingomonas koreensis DSMZ 15582 | Ga0059261_3636 | | RNA polymerase sigma factor, sigma-70 family | insig. | 38 | 94 |
| | Pseudomonas putida KT2440 | PP_0994 | | putative RNA polymerase sigma factor | insig. | 38 | 91 |
| | Pseudomonas stutzeri RCH2 | Psest_0114 | | RNA polymerase sigma factor, sigma-70 family | insig. | 36 | 93 |
| | Dechlorosoma suillum PS | Dsui_0155 | | RNA polymerase sigma factor, sigma-70 family | strong | 34 | 97 |
| | Variovorax sp. SCN45 | GFF320 | | RNA polymerase ECF-type sigma factor | insig. | 38 | 97 |
| o | Erwinia amylovora T8 | OLJFJH_08545 | | RNA polymerase subunit sigma-70 | insig. | 36 | 92 |
| | Sphingobium sp. HT1-2 | GFF5259 | | hypothetical protein | insig. | 41 | 77 |
| | Paraburkholderia bryophila 376MFSha3.1 | H281DRAFT_01786 | | RNA polymerase sigma-70 factor, ECF subfamily | insig. | 37 | 97 |
| o | Dyella japonica UNC79MFTsu3.2 | ABZR86_RS09080 | | sigma-70 family RNA polymerase sigma factor | cofit | 33 | 89 |
| o | Rhodanobacter sp. FW510-T8 | OKGIIK_03490 | | hypothetical protein | insig. | 35 | 91 |
| o | Rhodanobacter denitrificans MT42 | LRK55_RS14380 | | sigma-70 family RNA polymerase sigma factor | insig. | 35 | 97 |
| o | Rhodanobacter denitrificans FW104-10B01 | LRK54_RS14665 | | sigma-70 family RNA polymerase sigma factor | insig. | 35 | 97 |
| o | Rhodanobacter sp000427505 FW510-R12 | LRK53_RS13930 | | RNA polymerase sigma factor | insig. | 36 | 91 |
| | Rhodopseudomonas palustris CGA009 | TX73_002850 | | sigma-70 family RNA polymerase sigma factor | insig. | 33 | 93 |
| o | Xanthomonas campestris pv. campestris strain 8004 | Xcc-8004.3635.1 | | RNA polymerase ECF-type sigma factor | insig. | 35 | 87 |
| | Pseudomonas syringae pv. syringae B728a | Psyr_0892 | | Sigma-70 region 2:Sigma-70 region 4 | insig. | 34 | 90 |
| | Pseudomonas syringae pv. syringae B728a ΔmexB | Psyr_0892 | | Sigma-70 region 2:Sigma-70 region 4 | insig. | 34 | 90 |
| | Pseudomonas stutzeri RCH2 | Psest_3456 | | RNA polymerase sigma factor, sigma-70 family | insig. | 34 | 91 |
| | Fusobacterium nucleatum SB010 | HUW76_07635 | | RNA polymerase sigma factor | no data | 25 | 77 |
| | Rhodospirillum rubrum S1H | Rru_A0722 | | Sigma-24 (FecI) (NCBI) | insig. | 32 | 96 |
| | Rhodanobacter sp000427505 FW510-R12 | LRK53_RS10060 | | sigma-70 family RNA polymerase sigma factor | insig. | 31 | 94 |
| | Methylophilus sp. DMC18 | GFF2730 | | RNA polymerase sigma-H factor | no data | 29 | 77 |
| | Rhodanobacter denitrificans MT42 | LRK55_RS07240 | | sigma-70 family RNA polymerase sigma factor | insig. | 29 | 95 |
| | Sphingobium sp. HT1-2 | GFF2028 | | hypothetical protein | cofit | 33 | 82 |
| | Xanthomonas campestris pv. campestris strain 8004 | Xcc-8004.3601.1 | | RNA polymerase sigma-70 factor | insig. | 32 | 98 |
| | Kangiella aquimarina DSM 16071 | B158DRAFT_0139 | | RNA polymerase sigma factor, sigma-70 family | insig. | 31 | 94 |
| | Paraburkholderia sabiae LMG 24235 | QEN71_RS04575 | | RNA polymerase sigma factor RpoE | strong | 31 | 90 |
| | Burkholderia phytofirmans PsJN | BPHYT_RS14405 | | RNA polymerase sigma factor RpoE | no data | 31 | 90 |
| | Paraburkholderia bryophila 376MFSha3.1 | H281DRAFT_04355 | | RNA polymerase, sigma-24 subunit, RpoE | no data | 31 | 90 |
| | Paraburkholderia graminis OAS925 | ABIE53_003043 | | RNA polymerase sigma-70 factor (ECF subfamily) | strong | 31 | 90 |
| | Pantoea agglomerans CFBP13505 P0401 | PagCFBP13505_RS08045 | | sigma-70 family RNA polymerase sigma factor | cofit | 28 | 92 |
| | Phocaeicola dorei CL03T12C01 | ABI39_RS04680 | | RNA polymerase sigma factor | insig. | 29 | 84 |
| | Rhodanobacter denitrificans MT42 | LRK55_RS09165 | | RNA polymerase sigma factor | insig. | 30 | 88 |
| | Rhodanobacter denitrificans FW104-10B01 | LRK54_RS09505 | | RNA polymerase sigma factor | insig. | 30 | 88 |
| | Rhodanobacter denitrificans FW104-10B01 | LRK54_RS07500 | | sigma-70 family RNA polymerase sigma factor | insig. | 28 | 95 |
| | Variovorax sp. OAS795 | ABID97_RS21865 | | sigma-70 family RNA polymerase sigma factor | insig. | 31 | 81 |
| | Magnetospirillum magneticum AMB-1 | AMB_RS09285 | | RNA polymerase sigma factor | no data | 40 | 70 |
| o | Mycobacterium tuberculosis H37Rv | Rv3414c | | Probable alternative RNA polymerase sigma-D factor SigD | sig. | 31 | 97 |
| o | Bacteroides stercoris CC31F | HMPREF1181_RS02545 | | sigma-70 family RNA polymerase sigma factor | insig. | 31 | 83 |
| o | Bacteroides ovatus ATCC 8483 | BACOVA_01909 | | Sigma-70 region 2 | sig. | 28 | 84 |
| | Azospirillum brasilense Sp245 | AZOBR_RS28490 | | hypothetical protein | sig. | 31 | 93 |
| | Rhodanobacter sp. FW510-T8 | OKGIIK_14520 | rpoE | RNA polymerase sigma factor | insig. | 30 | 88 |
| | Shewanella amazonensis SB2B | Sama_2036 | | ECF subfamily RNA polymerase sigma-24 factor (RefSeq) | insig. | 26 | 90 |
| | Pontibacter actiniarum KMM 6156, DSM 19842 | CA264_11965 | | RNA polymerase subunit sigma | insig. | 23 | 90 |
| | Cellulophaga baltica 18 | M666_RS18230 | | RNA polymerase sigma factor | insig. | 22 | 72 |
| | Mycobacterium tuberculosis H37Rv | Rv3911 | | Possible alternative RNA polymerase sigma factor SigM | insig. | 31 | 80 |
| | Phocaeicola vulgatus CL09T03C04 | HMPREF1058_RS12120 | | RNA polymerase sigma factor | sig. | 29 | 84 |
| o | Bacteroides thetaiotaomicron VPI-5482 | BT3396 | | RNA polymerase ECF-type sigma factor (NCBI ptt file) | strong | 27 | 85 |
| | Echinicola vietnamensis KMM 6221, DSM 17526 | Echvi_0726 | | RNA polymerase sigma factor, sigma-70 family | insig. | 34 | 71 |
| | Azospirillum brasilense Sp245 | AZOBR_RS10625 | | RNA polymerase sigma-70 factor | insig. | 31 | 65 |
| | Azospirillum sp. SherDot2 | MPMX19_05229 | | ECF RNA polymerase sigma factor RpoE | insig. | 29 | 90 |
| | Pedobacter sp. GW460-11-11-14-LB5 | CA265_RS19950 | | RNA polymerase subunit sigma-24 | insig. | 26 | 95 |
| | Azospirillum brasilense Sp245 | AZOBR_RS11020 | | RNA polymerase subunit sigma-70 | no data | 35 | 66 |
| | Bosea sp. OAE506 | ABIE41_RS04095 | | sigma-70 family RNA polymerase sigma factor | strong | 31 | 65 |
| | Rhodanobacter sp. FW510-T8 | OKGIIK_13920 | | RNA polymerase subunit sigma | cofit | 29 | 94 |
| | Dinoroseobacter shibae DFL-12 | Dshi_0366 | | RNA polymerase, sigma-24 subunit, ECF subfamily (RefSeq) | insig. | 29 | 90 |
| | Rhodanobacter denitrificans MT42 | LRK55_RS16655 | | RNA polymerase sigma factor RpoE | no data | 29 | 90 |
| | Rhodanobacter denitrificans FW104-10B01 | LRK54_RS16940 | | RNA polymerase sigma factor RpoE | strong | 29 | 90 |
| | Mucilaginibacter yixingensis YX-36 DSM 26809 | ABZR88_RS19220 | | sigma-70 family RNA polymerase sigma factor | insig. | 27 | 91 |
| | Shewanella amazonensis SB2B | Sama_2611 | | ECF subfamily RNA polymerase sigma-24 factor (RefSeq) | insig. | 25 | 90 |
| | Shewanella sp. ANA-3 | Shewana3_3152 | | ECF subfamily RNA polymerase sigma-24 factor (RefSeq) | cofit | 30 | 91 |
| | Azospirillum brasilense Sp245 | AZOBR_RS26615 | | RNA polymerase | insig. | 33 | 76 |
| | Dyella japonica UNC79MFTsu3.2 | ABZR86_RS07180 | | RNA polymerase sigma factor RpoE | strong | 27 | 99 |
| | Rhodanobacter sp. FW510-T8 | OKGIIK_07900 | rpoE | RNA polymerase sigma factor RpoE | strong | 29 | 90 |
| | Bacteroides ovatus ATCC 8483 | BACOVA_00669 | | Sigma-70 region 2 | insig. | 21 | 88 |
| | Rhodanobacter sp000427505 FW510-R12 | LRK53_RS04580 | | sigma-70 family RNA polymerase sigma factor | insig. | 31 | 94 |
| | Parabacteroides merdae CL09T00C40 | HMPREF1078_RS13165 | | RNA polymerase sigma factor | insig. | 26 | 66 |
| | Cellulophaga baltica 18 | M666_RS01580 | | sigma-70 family RNA polymerase sigma factor | insig. | 26 | 66 |
| | Dechlorosoma suillum PS | Dsui_1302 | | RNA polymerase sigma factor, sigma-70 family | cofit | 32 | 67 |
| | Paraburkholderia bryophila 376MFSha3.1 | H281DRAFT_01538 | | RNA polymerase sigma-70 factor, ECF subfamily | insig. | 30 | 88 |
| | Paraburkholderia graminis OAS925 | ABIE53_005146 | | RNA polymerase sigma factor (sigma-70 family) | sig. | 30 | 88 |
| | Pedobacter sp. GW460-11-11-14-LB5 | CA265_RS00160 | | hypothetical protein | insig. | 29 | 91 |
| | Azospirillum sp. SherDot2 | MPMX19_05214 | | ECF RNA polymerase sigma factor SigE | insig. | 33 | 81 |
| | Azospirillum sp. SherDot2 | MPMX19_02022 | | ECF RNA polymerase sigma factor RpoE | insig. | 31 | 90 |
| | Sinorhizobium meliloti 1021 | SMc02713 | | RNA polymerase sigma-E factor (sigma-24) protein | strong | 30 | 86 |
| | Agrobacterium fabrum C58 | Atu1485 | | ECF family sigma factor | insig. | 31 | 71 |
| | Mycobacterium tuberculosis H37Rv | Rv0735 | | Probable alternative RNA polymerase sigma factor SigL | insig. | 30 | 91 |
| | Vibrio cholerae E7946 ATCC 55056 | CSW01_11715 | | RNA polymerase subunit sigma | insig. | 28 | 92 |
| | Ralstonia solanacearum IBSBF1503 | RALBFv3_RS14445 | | RNA polymerase sigma factor RpoE | strong | 28 | 90 |
| | Ralstonia solanacearum GMI1000 | RS_RS05225 | | RNA polymerase sigma factor RpoE | strong | 28 | 90 |