| Orth | Species | Gene | Name | Description | Fitness | %Id | Cov |
| | Azospirillum sp. SherDot2 | MPMX19_04570 | | ECF RNA polymerase sigma factor SigF | insig. | 100 | 100 |
| o | Rhizobium sp. OAE497 | ABIE40_RS01010 | | sigma-70 family RNA polymerase sigma factor | insig. | 65 | 99 |
| o | Xanthobacter sp. DMC5 | GFF2972 | | ECF RNA polymerase sigma factor SigF | no data | 51 | 95 |
| o | Rhodopseudomonas palustris CGA009 | TX73_009325 | | sigma-70 family RNA polymerase sigma factor | insig. | 52 | 96 |
| | Rhizobium sp. OAE497 | ABIE40_RS19610 | | sigma-70 family RNA polymerase sigma factor | insig. | 47 | 94 |
| o | Caulobacter crescentus NA1000 | CCNA_03362 | | ECF-family RNA polymerase sigma factor | strong | 44 | 91 |
| o | Caulobacter crescentus NA1000 Δfur | CCNA_03362 | | ECF-family RNA polymerase sigma factor | cofit | 44 | 91 |
| o | Sinorhizobium meliloti 1021 | SM_b20531 | | RNA polymerase sigma factor | insig. | 43 | 91 |
| o | Bosea sp. OAE506 | ABIE41_RS02435 | | sigma-70 family RNA polymerase sigma factor | insig. | 42 | 91 |
| o | Variovorax sp. OAS795 | ABID97_RS16825 | | sigma-70 family RNA polymerase sigma factor | insig. | 40 | 89 |
| o | Paraburkholderia sabiae LMG 24235 | QEN71_RS20845 | | sigma-70 family RNA polymerase sigma factor | insig. | 38 | 96 |
| o | Pantoea agglomerans CFBP13505 P0401 | PagCFBP13505_RS13745 | | sigma-70 family RNA polymerase sigma factor | insig. | 39 | 94 |
| o | Brevundimonas sp. GW460-12-10-14-LB2 | A4249_RS01090 | | sigma-70 family RNA polymerase sigma factor | insig. | 36 | 92 |
| o | Sphingomonas koreensis DSMZ 15582 | Ga0059261_3636 | | RNA polymerase sigma factor, sigma-70 family | insig. | 38 | 96 |
| o | Dechlorosoma suillum PS | Dsui_0155 | | RNA polymerase sigma factor, sigma-70 family | strong | 37 | 95 |
| o | Herbaspirillum seropedicae SmR1 | HSERO_RS16195 | | RNA polymerase sigma factor | insig. | 38 | 92 |
| o | Pantoea sp. MT58 | IAI47_20240 | | sigma-70 family RNA polymerase sigma factor | insig. | 36 | 94 |
| o | Burkholderia phytofirmans PsJN | BPHYT_RS25560 | | RNA polymerase sigma factor | insig. | 34 | 97 |
| | Acidovorax sp. GW101-3H11 | Ac3H11_1827 | | RNA polymerase sigma-70 factor, ECF subfamily | insig. | 35 | 94 |
| o | Erwinia amylovora T8 | OLJFJH_08545 | | RNA polymerase subunit sigma-70 | insig. | 35 | 92 |
| o | Agrobacterium fabrum C58 | Atu2268 | | ECF family sigma factor | insig. | 41 | 74 |
| | Burkholderia phytofirmans PsJN | BPHYT_RS25505 | | RNA polymerase sigma factor | insig. | 34 | 95 |
| o | Variovorax sp. SCN45 | GFF320 | | RNA polymerase ECF-type sigma factor | insig. | 39 | 89 |
| | Xanthobacter sp. DMC5 | GFF1206 | | ECF RNA polymerase sigma factor SigF | insig. | 36 | 94 |
| o | Pseudomonas stutzeri RCH2 | Psest_0114 | | RNA polymerase sigma factor, sigma-70 family | insig. | 35 | 94 |
| o | Pseudomonas putida KT2440 | PP_0994 | | putative RNA polymerase sigma factor | insig. | 36 | 91 |
| o | Paraburkholderia bryophila 376MFSha3.1 | H281DRAFT_01786 | | RNA polymerase sigma-70 factor, ECF subfamily | insig. | 36 | 98 |
| o | Sphingobium sp. HT1-2 | GFF5259 | | hypothetical protein | insig. | 40 | 72 |
| | Dyella japonica UNC79MFTsu3.2 | ABZR86_RS09080 | | sigma-70 family RNA polymerase sigma factor | cofit | 37 | 85 |
| o | Rhodanobacter sp. FW510-T8 | OKGIIK_03490 | | hypothetical protein | insig. | 35 | 85 |
| o | Kangiella aquimarina DSM 16071 | B158DRAFT_1843 | | RNA polymerase sigma factor, sigma-70 family | insig. | 28 | 92 |
| | Rhodanobacter denitrificans MT42 | LRK55_RS14380 | | sigma-70 family RNA polymerase sigma factor | insig. | 34 | 88 |
| | Rhodanobacter denitrificans FW104-10B01 | LRK54_RS14665 | | sigma-70 family RNA polymerase sigma factor | insig. | 34 | 88 |
| o | Rhodanobacter sp000427505 FW510-R12 | LRK53_RS13930 | | RNA polymerase sigma factor | insig. | 35 | 85 |
| | Mycobacterium tuberculosis H37Rv | Rv3414c | | Probable alternative RNA polymerase sigma-D factor SigD | sig. | 32 | 86 |
| | Shewanella amazonensis SB2B | Sama_2036 | | ECF subfamily RNA polymerase sigma-24 factor (RefSeq) | insig. | 28 | 91 |
| | Azospirillum sp. SherDot2 | MPMX19_05229 | | ECF RNA polymerase sigma factor RpoE | insig. | 29 | 75 |
| | Xanthomonas campestris pv. campestris strain 8004 | Xcc-8004.3601.1 | | RNA polymerase sigma-70 factor | insig. | 29 | 92 |
| | Sphingomonas koreensis DSMZ 15582 | Ga0059261_2952 | | RNA polymerase sigma factor, sigma-70 family | strong | 28 | 90 |
| | Acidovorax sp. GW101-3H11 | Ac3H11_1599 | | RNA polymerase sigma factor | insig. | 37 | 56 |
| | Pseudomonas syringae pv. syringae B728a | Psyr_0892 | | Sigma-70 region 2:Sigma-70 region 4 | insig. | 29 | 70 |
| | Pseudomonas syringae pv. syringae B728a ΔmexB | Psyr_0892 | | Sigma-70 region 2:Sigma-70 region 4 | insig. | 29 | 70 |
| | Marinobacter adhaerens HP15 | HP15_950 | | RNA polymerase, sigma-24 subunit, ECF subfamily | insig. | 33 | 66 |
| | Marinobacter adhaerens HP15 | HP15_342 | | RNA polymerase sigma factor SigE | insig. | 26 | 77 |
| | Rhodospirillum rubrum S1H | Rru_A0722 | | Sigma-24 (FecI) (NCBI) | insig. | 28 | 89 |
| | Caulobacter crescentus NA1000 | CCNA_02977 | | RNA polymerase ECF-type sigma factor sigU | strong | 28 | 84 |
| | Caulobacter crescentus NA1000 Δfur | CCNA_02977 | | RNA polymerase ECF-type sigma factor sigU | cofit | 28 | 84 |
| | Mucilaginibacter yixingensis YX-36 DSM 26809 | ABZR88_RS18610 | | RNA polymerase sigma-70 factor | insig. | 26 | 96 |
| | Sinorhizobium meliloti 1021 | SMc01506 | | RNA polymerase sigma factor | strong | 24 | 89 |
| | Sphingobium sp. HT1-2 | GFF5325 | | RNA polymerase ECF-type sigma factor | cofit | 29 | 79 |
| | Rhodanobacter denitrificans MT42 | LRK55_RS07240 | | sigma-70 family RNA polymerase sigma factor | insig. | 27 | 82 |
| | Phocaeicola dorei CL03T12C01 | ABI39_RS04680 | | RNA polymerase sigma factor | insig. | 27 | 69 |
| | Bosea sp. OAE506 | ABIE41_RS04095 | | sigma-70 family RNA polymerase sigma factor | strong | 28 | 88 |
| | Acidovorax sp. GW101-3H11 | Ac3H11_1622 | | RNA polymerase sigma factor | insig. | 30 | 66 |
| | Rhodanobacter denitrificans FW104-10B01 | LRK54_RS07500 | | sigma-70 family RNA polymerase sigma factor | insig. | 26 | 82 |
| | Phaeobacter inhibens DSM 17395 | PGA1_c27510 | | 'RNA polymerase sigma factor (sigma-70 family; ECF11 subgroup)' | insig. | 31 | 64 |
| | Brevundimonas sp. GW460-12-10-14-LB2 | A4249_RS14775 | | sigma-70 family RNA polymerase sigma factor | strong | 27 | 86 |
| | Phocaeicola vulgatus CL09T03C04 | HMPREF1058_RS12120 | | RNA polymerase sigma factor | strong | 26 | 69 |
| | Shewanella sp. ANA-3 | Shewana3_2465 | | ECF subfamily RNA polymerase sigma-24 factor (RefSeq) | insig. | 24 | 92 |
| | Echinicola vietnamensis KMM 6221, DSM 17526 | Echvi_3924 | | RNA polymerase sigma-70 factor, Bacteroides expansion family 1 | strong | 23 | 90 |
| | Variovorax sp. SCN45 | GFF3817 | | RNA polymerase sigma factor | insig. | 31 | 66 |
| | Rhodanobacter sp. FW510-T8 | OKGIIK_13920 | | RNA polymerase subunit sigma | insig. | 27 | 82 |
| | Pedobacter sp. GW460-11-11-14-LB5 | CA265_RS12095 | | RNA polymerase subunit sigma-70 | insig. | 25 | 89 |
| | Pedobacter sp. GW460-11-11-14-LB5 | CA265_RS00160 | | hypothetical protein | insig. | 27 | 89 |
| | Mucilaginibacter yixingensis YX-36 DSM 26809 | ABZR88_RS01700 | | RNA polymerase sigma factor | insig. | 23 | 67 |
| | Rhodanobacter denitrificans FW104-10B01 | LRK54_RS01495 | | sigma-70 family RNA polymerase sigma factor | insig. | 26 | 91 |
| | Bacteroides stercoris CC31F | HMPREF1181_RS02545 | | sigma-70 family RNA polymerase sigma factor | insig. | 28 | 69 |
| | Magnetospirillum magneticum AMB-1 | AMB_RS09285 | | RNA polymerase sigma factor | no data | 30 | 70 |
| | Sphingomonas koreensis DSMZ 15582 | Ga0059261_1715 | | RNA polymerase sigma factor, sigma-70 family | insig. | 34 | 66 |
| | Azospirillum brasilense Sp245 | AZOBR_RS10625 | | RNA polymerase sigma-70 factor | insig. | 27 | 79 |
| | Sphingobium sp. HT1-2 | GFF2028 | | hypothetical protein | cofit | 25 | 74 |
| | Rhizobium sp. OAE497 | ABIE40_RS14450 | | RNA polymerase sigma factor | insig. | 24 | 86 |
| | Cupriavidus basilensis FW507-4G11 | RR42_RS35625 | | RNA polymerase sigma24 factor | insig. | 26 | 93 |
| | Rhodanobacter sp. FW510-T8 | OKGIIK_14520 | rpoE | RNA polymerase sigma factor | insig. | 30 | 86 |
| | Sphingobium sp. HT1-2 | GFF5201 | | sigma-24 (FecI-like) protein | insig. | 28 | 90 |
| | Mycobacterium tuberculosis H37Rv | Rv3911 | | Possible alternative RNA polymerase sigma factor SigM | insig. | 27 | 80 |
| | Rhodanobacter sp000427505 FW510-R12 | LRK53_RS10060 | | sigma-70 family RNA polymerase sigma factor | insig. | 25 | 91 |
| | Shewanella sp. ANA-3 | Shewana3_0763 | | ECF subfamily RNA polymerase sigma-24 factor (RefSeq) | insig. | 22 | 91 |
| | Azospirillum brasilense Sp245 | AZOBR_RS00810 | | RNA polymerase sigma factor RpoE | insig. | 32 | 66 |
| | Hydrogenophaga sp. GW460-11-11-14-LB1 | GFF365 | | RNA polymerase sigma factor | insig. | 30 | 68 |
| | Xanthobacter sp. DMC5 | GFF2321 | | ECF RNA polymerase sigma factor EcfG | no data | 28 | 82 |
| | Agrobacterium fabrum C58 | Atu1485 | | ECF family sigma factor | insig. | 27 | 82 |
| | Azospirillum brasilense Sp245 | AZOBR_RS21190 | | RNA polymerase sigma factor RpoE | insig. | 33 | 52 |
| | Rhodanobacter denitrificans MT42 | LRK55_RS09165 | | RNA polymerase sigma factor | insig. | 30 | 86 |
| | Rhodanobacter denitrificans FW104-10B01 | LRK54_RS09505 | | RNA polymerase sigma factor | insig. | 30 | 86 |
| | Rhodopseudomonas palustris CGA009 | TX73_009355 | | sigma-70 family RNA polymerase sigma factor | insig. | 29 | 69 |
| | Agrobacterium fabrum C58 | Atu3084 | | RNA polymerase sigma factor | insig. | 27 | 90 |
| | Agrobacterium fabrum C58 | Atu4160 | | RNA polymerase sigma factor | strong | 26 | 86 |
| | Pedobacter sp. GW460-11-11-14-LB5 | CA265_RS15190 | | RNA polymerase sigma factor | insig. | 24 | 72 |
| | Echinicola vietnamensis KMM 6221, DSM 17526 | Echvi_3981 | | RNA polymerase sigma-70 factor, Bacteroides expansion family 1 | insig. | 25 | 93 |
| | Mycobacterium tuberculosis H37Rv | Rv0735 | | Probable alternative RNA polymerase sigma factor SigL | insig. | 31 | 68 |
| | Xanthobacter sp. DMC5 | GFF1406 | | RNA polymerase sigma-H factor | insig. | 31 | 89 |
| | Bosea sp. OAE506 | ABIE41_RS10280 | | sigma-70 family RNA polymerase sigma factor | insig. | 26 | 90 |
| | Azospirillum brasilense Sp245 | AZOBR_RS14755 | | RNA polymerase sigma-70 factor | insig. | 24 | 69 |
| | Caulobacter crescentus NA1000 | CCNA_03589 | | RNA polymerase EcfG family sigma factor sigT | strong | 24 | 83 |
| | Caulobacter crescentus NA1000 Δfur | CCNA_03589 | | RNA polymerase EcfG family sigma factor sigT | cofit | 24 | 83 |
| | Fusobacterium nucleatum SB010 | HUW76_07635 | | RNA polymerase sigma factor | no data | 22 | 72 |
| | Variovorax sp. OAS795 | ABID97_RS21865 | | sigma-70 family RNA polymerase sigma factor | insig. | 30 | 62 |
| | Variovorax sp. OAS795 | ABID97_RS08165 | | sigma-70 family RNA polymerase sigma factor | insig. | 28 | 84 |
| | Rhodospirillum rubrum S1H | Rru_A3287 | | Sigma-24 (FecI) (NCBI) | no data | 28 | 82 |