| Orth | Species | Gene | Name | Description | Fitness | %Id | Cov |
| | Phaeobacter inhibens DSM 17395 | PGA1_c08510 | | RNA polymerase sigma factor (ECF01 subgroup, ECF20 subgroup) | insig. | 100 | 100 |
| o | Rhodopseudomonas palustris CGA009 | TX73_003315 | | RNA polymerase sigma factor | insig. | 43 | 92 |
| | Brevundimonas sp. GW460-12-10-14-LB2 | A4249_RS10790 | | RNA polymerase sigma factor | insig. | 47 | 80 |
| o | Caulobacter crescentus NA1000 | CCNA_02837 | | RNA polymerase ECF-type sigma factor | insig. | 47 | 83 |
| o | Caulobacter crescentus NA1000 Δfur | CCNA_02837 | | RNA polymerase ECF-type sigma factor | cofit | 47 | 83 |
| | Paraburkholderia bryophila 376MFSha3.1 | H281DRAFT_02732 | | RNA polymerase sigma-70 factor, ECF subfamily | insig. | 45 | 80 |
| o | Burkholderia phytofirmans PsJN | BPHYT_RS24975 | | RNA polymerase sigma24 factor | strong | 45 | 80 |
| o | Paraburkholderia graminis OAS925 | ABIE53_005321 | | RNA polymerase sigma factor (sigma-70 family) | sig. | 44 | 80 |
| o | Azospirillum brasilense Sp245 | AZOBR_RS28490 | | hypothetical protein | sig. | 43 | 85 |
| | Pseudomonas simiae WCS417 | PS417_11995 | | RNA polymerase sigma factor | insig. | 43 | 80 |
| | Cupriavidus basilensis FW507-4G11 | RR42_RS05810 | | RNA polymerase sigma factor | insig. | 44 | 79 |
| | Variovorax sp. SCN45 | GFF4544 | | RNA polymerase sigma factor RpoE | insig. | 46 | 71 |
| o | Agrobacterium fabrum C58 | Atu3084 | | RNA polymerase sigma factor | insig. | 41 | 80 |
| | Pseudomonas fluorescens SBW25 | PFLU_RS12745 | | RNA polymerase sigma factor | insig. | 42 | 80 |
| | Pseudomonas fluorescens SBW25-INTG | PFLU_RS12745 | | RNA polymerase sigma factor | insig. | 42 | 80 |
| | Azospirillum sp. SherDot2 | MPMX19_05214 | | ECF RNA polymerase sigma factor SigE | insig. | 40 | 80 |
| | Pseudomonas lactucae CFBP13502 | GEMAOFIL_02674 | | hypothetical protein | cofit | 43 | 80 |
| o | Paraburkholderia sabiae LMG 24235 | QEN71_RS16180 | | RNA polymerase sigma factor | insig. | 46 | 80 |
| o | Xanthobacter sp. DMC5 | GFF1406 | | RNA polymerase sigma-H factor | insig. | 41 | 81 |
| | Rhodopseudomonas palustris CGA009 | TX73_023085 | | RNA polymerase sigma factor | cofit | 39 | 81 |
| | Pseudomonas fluorescens FW300-N2E2 | Pf6N2E2_4220 | | RNA polymerase sigma factor RpoE | insig. | 36 | 77 |
| o | Rhodospirillum rubrum S1H | Rru_A2537 | | Sigma-24 (FecI) (NCBI) | insig. | 42 | 62 |
| | Magnetospirillum magneticum AMB-1 | AMB_RS14160 | | RNA polymerase sigma factor | cofit | 38 | 79 |
| | Azospirillum sp. SherDot2 | MPMX19_04274 | | RNA polymerase sigma-H factor | insig. | 43 | 69 |
| | Azospirillum sp. SherDot2 | MPMX19_05475 | | hypothetical protein | no data | 41 | 73 |
| | Azospirillum brasilense Sp245 | AZOBR_RS31600 | | RNA polymerase | insig. | 36 | 77 |
| o | Ralstonia solanacearum GMI1000 | RS_RS11855 | | DNA-directed RNA polymerase sigma-70 factor | insig. | 34 | 82 |
| | Ralstonia sp. UNC404CL21Col | ABZR87_RS16160 | | sigma-70 family RNA polymerase sigma factor | insig. | 34 | 85 |
| | Ralstonia solanacearum PSI07 | RPSI07_RS13090 | | DNA-directed RNA polymerase sigma-70 factor | insig. | 34 | 89 |
| | Mycobacterium tuberculosis H37Rv | Rv1221 | | Alternative RNA polymerase sigma factor SigE | insig. | 37 | 68 |
| | Variovorax sp. OAS795 | ABID97_RS21865 | | sigma-70 family RNA polymerase sigma factor | insig. | 30 | 75 |
| o | Castellaniella sp019104865 MT123 | ABCV34_RS11175 | | sigma-70 family RNA polymerase sigma factor | insig. | 32 | 76 |
| | Ralstonia solanacearum IBSBF1503 | RALBFv3_RS04270 | | DNA-directed RNA polymerase sigma-70 factor | insig. | 32 | 72 |
| | Ralstonia solanacearum UW163 | UW163_RS09400 | | DNA-directed RNA polymerase sigma-70 factor | insig. | 32 | 72 |
| | Pseudomonas stutzeri RCH2 | Psest_3456 | | RNA polymerase sigma factor, sigma-70 family | insig. | 32 | 79 |
| | Rhodospirillum rubrum S1H | Rru_A0722 | | Sigma-24 (FecI) (NCBI) | insig. | 34 | 72 |
| | Azospirillum sp. SherDot2 | MPMX19_05742 | | hypothetical protein | insig. | 35 | 82 |
| | Rhodanobacter sp. FW510-T8 | OKGIIK_07900 | rpoE | RNA polymerase sigma factor RpoE | strong | 31 | 79 |
| | Bacteroides thetaiotaomicron VPI-5482 | BT4571 | | RNA polymerase ECF-type sigma factor (NCBI ptt file) | strong | 30 | 71 |
| o | Marinobacter adhaerens HP15 | HP15_950 | | RNA polymerase, sigma-24 subunit, ECF subfamily | insig. | 27 | 87 |
| o | Pseudomonas fluorescens FW300-N2C3 | AO356_10740 | | RNA polymerase subunit sigma | insig. | 36 | 83 |
| | Pseudomonas fluorescens FW300-N2E2 | Pf6N2E2_4018 | | RNA polymerase sigma-E factor | insig. | 36 | 83 |
| o | Pseudomonas sp. S08-1 | OH686_11525 | | hypothetical protein | cofit | 34 | 71 |
| | Pseudomonas orientalis W4I3 | QF045_RS17270 | | sigma-70 family RNA polymerase sigma factor | insig. | 30 | 82 |
| | Pseudomonas orientalis W4I3 | QF045_RS00535 | | sigma-70 family RNA polymerase sigma factor | cofit | 30 | 92 |
| | Sinorhizobium meliloti 1021 | SMa0143 | | RNA polymerase ECF sigma factor | insig. | 33 | 67 |
| | Burkholderia phytofirmans PsJN | BPHYT_RS22710 | | XRE family transcriptional regulator | sig. | 32 | 78 |
| | Rhodanobacter denitrificans FW104-10B01 | LRK54_RS07500 | | sigma-70 family RNA polymerase sigma factor | insig. | 32 | 89 |
| | Rhodanobacter sp000427505 FW510-R12 | LRK53_RS12005 | | RNA polymerase sigma factor RpoE | no data | 30 | 79 |
| | Rhodanobacter denitrificans MT42 | LRK55_RS07240 | | sigma-70 family RNA polymerase sigma factor | insig. | 34 | 89 |
| | Pseudomonas fluorescens SBW25 | PFLU_RS16335 | | sigma-70 family RNA polymerase sigma factor | insig. | 31 | 77 |
| | Pseudomonas fluorescens SBW25-INTG | PFLU_RS16335 | | sigma-70 family RNA polymerase sigma factor | insig. | 31 | 77 |
| | Paraburkholderia bryophila 376MFSha3.1 | H281DRAFT_01538 | | RNA polymerase sigma-70 factor, ECF subfamily | insig. | 32 | 86 |
| | Pseudomonas fluorescens SBW25 | PFLU_RS00840 | | RNA polymerase sigma factor | insig. | 39 | 80 |
| | Pseudomonas fluorescens SBW25-INTG | PFLU_RS00840 | | RNA polymerase sigma factor | sig. | 39 | 80 |
| | Alteromonas macleodii MIT1002 | MIT1002_03807 | | Sigma-W factor | insig. | 24 | 80 |
| | Burkholderia phytofirmans PsJN | BPHYT_RS21845 | | hypothetical protein | insig. | 30 | 76 |
| | Pseudomonas simiae WCS417 | PS417_00810 | | RNA polymerase sigma factor | insig. | 36 | 86 |
| | Rhodopseudomonas palustris CGA009 | TX73_002850 | | sigma-70 family RNA polymerase sigma factor | insig. | 31 | 79 |
| o | Mucilaginibacter yixingensis YX-36 DSM 26809 | ABZR88_RS01700 | | RNA polymerase sigma factor | insig. | 26 | 83 |
| | Rhodanobacter denitrificans MT42 | LRK55_RS16655 | | RNA polymerase sigma factor RpoE | no data | 30 | 79 |
| | Rhodanobacter denitrificans FW104-10B01 | LRK54_RS16940 | | RNA polymerase sigma factor RpoE | strong | 30 | 79 |
| | Bacteroides ovatus ATCC 8483 | BACOVA_01909 | | Sigma-70 region 2 | sig. | 30 | 67 |
| o | Shewanella sp. ANA-3 | Shewana3_0763 | | ECF subfamily RNA polymerase sigma-24 factor (RefSeq) | insig. | 29 | 83 |
| | Sphingomonas koreensis DSMZ 15582 | Ga0059261_2952 | | RNA polymerase sigma factor, sigma-70 family | strong | 32 | 77 |
| | Rhodanobacter sp. FW510-T8 | OKGIIK_13920 | | RNA polymerase subunit sigma | insig. | 37 | 62 |
| | Bosea sp. OAE506 | ABIE41_RS11620 | | sigma-70 family RNA polymerase sigma factor | insig. | 32 | 78 |
| | Synechococcus elongatus PCC 7942 | Synpcc7942_2004 | sigI | RNA polymerase sigma factor | insig. | 32 | 80 |
| | Rhodanobacter sp. FW510-T8 | OKGIIK_05040 | | RNA polymerase subunit sigma | insig. | 35 | 74 |
| | Pseudomonas lactucae CFBP13502 | GEMAOFIL_00391 | | RNA polymerase sigma-H factor | cofit | 36 | 87 |
| | Shewanella sp. ANA-3 | Shewana3_3152 | | ECF subfamily RNA polymerase sigma-24 factor (RefSeq) | cofit | 28 | 88 |
| | Rhizobium sp. OAE497 | ABIE40_RS18210 | | sigma-70 family RNA polymerase sigma factor | insig. | 33 | 68 |
| | Hydrogenophaga sp. GW460-11-11-14-LB1 | GFF2666 | | RNA polymerase sigma-70 factor, ECF family | insig. | 34 | 79 |
| | Xanthomonas campestris pv. campestris strain 8004 | Xcc-8004.3601.1 | | RNA polymerase sigma-70 factor | insig. | 30 | 80 |
| | Dyella japonica UNC79MFTsu3.2 | ABZR86_RS07180 | | RNA polymerase sigma factor RpoE | strong | 30 | 79 |
| | Rhodanobacter denitrificans FW104-10B01 | LRK54_RS01495 | | sigma-70 family RNA polymerase sigma factor | insig. | 38 | 59 |
| | Azospirillum sp. SherDot2 | MPMX19_05229 | | ECF RNA polymerase sigma factor RpoE | insig. | 29 | 83 |
| | Pontibacter actiniarum KMM 6156, DSM 19842 | CA264_02680 | | RNA polymerase subunit sigma-70 | insig. | 28 | 79 |
| | Dyella japonica UNC79MFTsu3.2 | ABZR86_RS07040 | | RNA polymerase sigma factor | insig. | 33 | 74 |
| | Mucilaginibacter yixingensis YX-36 DSM 26809 | ABZR88_RS13970 | | RNA polymerase sigma factor | cofit | 25 | 81 |
| | Pseudomonas fluorescens FW300-N2E3 | AO353_07625 | | RNA polymerase subunit sigma-70 | insig. | 29 | 83 |
| o | Shewanella oneidensis MR-1 | SO3551 | | RNA polymerase sigma-70 factor, ECF subfamily (NCBI ptt file) | insig. | 28 | 88 |
| | Phocaeicola dorei CL03T12C01 | ABI39_RS04680 | | RNA polymerase sigma factor | insig. | 31 | 63 |
| o | Shewanella amazonensis SB2B | Sama_2611 | | ECF subfamily RNA polymerase sigma-24 factor (RefSeq) | insig. | 28 | 87 |
| | Phocaeicola vulgatus CL09T03C04 | HMPREF1058_RS12120 | | RNA polymerase sigma factor | strong | 31 | 63 |
| o | Pseudomonas fluorescens FW300-N1B4 | Pf1N1B4_1738 | | RNA polymerase sigma-54 factor RpoN | insig. | 32 | 83 |
| | Pseudomonas segetis P6 | ACVTMO_RS12985 | sigX | RNA polymerase sigma factor SigX | no data | 32 | 64 |
| | Variovorax sp. SCN45 | GFF3863 | | RNA polymerase sigma factor RpoE | insig. | 32 | 85 |
| | Dinoroseobacter shibae DFL-12 | Dshi_2428 | | RNA polymerase, sigma-24 subunit, ECF subfamily (RefSeq) | insig. | 30 | 80 |
| o | Shewanella loihica PV-4 | Shew_1231 | | ECF subfamily RNA polymerase sigma-24 factor (RefSeq) | insig. | 30 | 84 |
| | Bacteroides stercoris CC31F | HMPREF1181_RS05860 | | sigma-70 family RNA polymerase sigma factor | insig. | 30 | 64 |
| | Marinobacter adhaerens HP15 | HP15_775 | | RNA polymerase sigma-70 RpoE type | insig. | 29 | 83 |
| | Variovorax sp. SCN45 | GFF4503 | | RNA polymerase sigma factor | insig. | 28 | 87 |
| | Shewanella loihica PV-4 | Shew_1048 | | RNA polymerase sigma factor RpoE (RefSeq) | cofit | 28 | 77 |
| | Pantoea sp. MT58 | IAI47_19735 | | sigma-70 family RNA polymerase sigma factor | insig. | 27 | 79 |
| | Pontibacter actiniarum KMM 6156, DSM 19842 | CA264_00665 | | RNA polymerase subunit sigma-24 | strong | 25 | 76 |
| | Alteromonas macleodii MIT1002 | MIT1002_00882 | | Sigma-W factor | insig. | 30 | 68 |
| | Pseudomonas fluorescens SBW25 | PFLU_RS13305 | | sigma-70 family RNA polymerase sigma factor | insig. | 28 | 77 |
| | Pseudomonas fluorescens SBW25-INTG | PFLU_RS13305 | | sigma-70 family RNA polymerase sigma factor | sig. | 28 | 77 |
| | Pseudomonas segetis P6 | ACVTMO_RS06730 | | sigma-70 family RNA polymerase sigma factor | insig. | 26 | 76 |