UniProtKB - O34843 (SIGO_BACSU)
Protein
RNA polymerase sigma factor SigO
Gene
sigO
Organism
Bacillus subtilis (strain 168)
Status
Functioni
Sigma factors are initiation factors that promote the attachment of RNA polymerase to specific initiation sites and are then released. Together with its coactivator RsoA, positively regulates the expression of at least three operons, including oxdC-yvrL, sigO-rsoA and yvrJ. Required for the acid stress-dependent induction of the oxalate decarboxylase oxdC.2 Publications
Regions
| Feature key | Position(s) | DescriptionActions | Graphical view | Length |
|---|---|---|---|---|
| DNA bindingi | 139 – 158 | H-T-H motifBy similarityAdd BLAST | 20 |
GO - Molecular functioni
- DNA binding Source: UniProtKB-KW
- DNA-binding transcription factor activity Source: InterPro
- sigma factor activity Source: UniProtKB-KW
GO - Biological processi
- DNA-templated transcription, initiation Source: InterPro
- regulation of transcription, DNA-templated Source: GO_Central
Keywordsi
| Molecular function | DNA-binding, Sigma factor |
| Biological process | Transcription, Transcription regulation |
Enzyme and pathway databases
| BioCyci | BSUB:BSU33230-MONOMER |
Names & Taxonomyi
| Protein namesi | Recommended name: RNA polymerase sigma factor SigO |
| Gene namesi | Name:sigO Synonyms:yvrI Ordered Locus Names:BSU33230 |
| Organismi | Bacillus subtilis (strain 168) |
| Taxonomic identifieri | 224308 [NCBI] |
| Taxonomic lineagei | Bacteria › Firmicutes › Bacilli › Bacillales › Bacillaceae › Bacillus › |
| Proteomesi |
|
PTM / Processingi
Molecule processing
| Feature key | Position(s) | DescriptionActions | Graphical view | Length |
|---|---|---|---|---|
| ChainiPRO_0000377726 | 1 – 176 | RNA polymerase sigma factor SigOAdd BLAST | 176 |
Proteomic databases
| PaxDbi | O34843 |
| PRIDEi | O34843 |
Expressioni
Inductioni
In the mid-exponential phase of growth under acidic conditions. Positively autoregulated, in the presence of RsoA. Down-regulated by YvrL under nonstress conditions.2 Publications
Interactioni
Subunit structurei
Interacts with RNA polymerase.
1 PublicationBinary interactionsi
O34843
| With | #Exp. | IntAct |
|---|---|---|
| rsoA [C0H3R4] | 2 | EBI-15816883,EBI-15816929 |
Protein-protein interaction databases
| DIPi | DIP-49019N |
| IntActi | O34843, 3 interactors |
| STRINGi | 224308.BSU33230 |
Family & Domainsi
Motif
| Feature key | Position(s) | DescriptionActions | Graphical view | Length |
|---|---|---|---|---|
| Motifi | 30 – 43 | Polymerase core bindingAdd BLAST | 14 |
Sequence similaritiesi
Belongs to the sigma-70 factor family.Curated
Phylogenomic databases
| eggNOGi | COG1191, Bacteria |
| OMAi | INEGLAM |
Family and domain databases
| InterProi | View protein in InterPro IPR014284, RNA_pol_sigma-70_dom IPR007630, RNA_pol_sigma70_r4 IPR013324, RNA_pol_sigma_r3/r4-like |
| Pfami | View protein in Pfam PF04545, Sigma70_r4, 1 hit |
| SUPFAMi | SSF88659, SSF88659, 1 hit |
| TIGRFAMsi | TIGR02937, sigma70-ECF, 1 hit |
Sequencei
Sequence statusi: Complete.
O34843-1 [UniParc]FASTAAdd to basket
10 20 30 40 50
MKHPIVKHFL SNPQHYRLFK NVMESPNEKD ARSLDELFKQ FYKEIRIVKY
60 70 80 90 100
MNSMIRIFSI DFDKRVRKNQ KRYPLTVDHP EAGDRLSSET GSDAFEEFLD
110 120 130 140 150
RQDDLSQHVQ DYQLYQAIQK LTDKQKSVLT KVYLHGATMQ EIADSLGESR
160 170
QNISNIHKKG LENIRKQLAA QKKGEK
Sequence cautioni
The sequence CAA11728 differs from that shown. Reason: Erroneous initiation.Curated
Experimental Info
| Feature key | Position(s) | DescriptionActions | Graphical view | Length |
|---|---|---|---|---|
| Sequence conflicti | 174 | G → R in CAA11728 (PubMed:9639930).Curated | 1 |
Sequence databases
| Select the link destinations: EMBLi GenBanki DDBJi Links Updated | AJ223978 Genomic DNA Translation: CAA11728.1 Different initiation. AL009126 Genomic DNA Translation: CAB15313.2 |
| RefSeqi | NP_391203.2, NC_000964.3 WP_003243707.1, NZ_JNCM01000033.1 |
Genome annotation databases
| EnsemblBacteriai | CAB15313; CAB15313; BSU33230 |
| GeneIDi | 935983 |
| KEGGi | bsu:BSU33230 |
| PATRICi | fig|224308.43.peg.3483 |
Similar proteinsi
Cross-referencesi
Sequence databases
| Select the link destinations: EMBLi GenBanki DDBJi Links Updated | AJ223978 Genomic DNA Translation: CAA11728.1 Different initiation. AL009126 Genomic DNA Translation: CAB15313.2 |
| RefSeqi | NP_391203.2, NC_000964.3 WP_003243707.1, NZ_JNCM01000033.1 |
3D structure databases
| SMRi | O34843 |
| ModBasei | Search... |
Protein-protein interaction databases
| DIPi | DIP-49019N |
| IntActi | O34843, 3 interactors |
| STRINGi | 224308.BSU33230 |
Proteomic databases
| PaxDbi | O34843 |
| PRIDEi | O34843 |
Genome annotation databases
| EnsemblBacteriai | CAB15313; CAB15313; BSU33230 |
| GeneIDi | 935983 |
| KEGGi | bsu:BSU33230 |
| PATRICi | fig|224308.43.peg.3483 |
Phylogenomic databases
| eggNOGi | COG1191, Bacteria |
| OMAi | INEGLAM |
Enzyme and pathway databases
| BioCyci | BSUB:BSU33230-MONOMER |
Family and domain databases
| InterProi | View protein in InterPro IPR014284, RNA_pol_sigma-70_dom IPR007630, RNA_pol_sigma70_r4 IPR013324, RNA_pol_sigma_r3/r4-like |
| Pfami | View protein in Pfam PF04545, Sigma70_r4, 1 hit |
| SUPFAMi | SSF88659, SSF88659, 1 hit |
| TIGRFAMsi | TIGR02937, sigma70-ECF, 1 hit |
| ProtoNeti | Search... |
| MobiDBi | Search... |
Entry informationi
| Entry namei | SIGO_BACSU | |
| Accessioni | O34843Primary (citable) accession number: O34843 Secondary accession number(s): Q7B2K5 | |
| Entry historyi | Integrated into UniProtKB/Swiss-Prot: | June 16, 2009 |
| Last sequence update: | May 5, 2009 | |
| Last modified: | December 2, 2020 | |
| This is version 109 of the entry and version 2 of the sequence. See complete history. | ||
| Entry statusi | Reviewed (UniProtKB/Swiss-Prot) | |
| Annotation program | Prokaryotic Protein Annotation Program | |
Miscellaneousi
Keywords - Technical termi
Reference proteomeDocuments
- SIMILARITY comments
Index of protein domains and families




