Gene Rv0182c
in Mycobacterium tuberculosis H37Rv
General annotation
| Type | CDS |
| Function | The sigma factor is an initiation factor that promotes attachment of the RNA polymerase to specific initiation sites and then is released. |
| Product | Probable alternative RNA polymerase sigma factor SigG (RNA polymerase ECF type sigma factor) |
| Comments | Rv0182c, (MTCI28.22c), len: 370 aa (start site uncertain; first of several possibles was chosen, but note that this overlaps the upstream ORF). Probable sigG, alternative RNA polymerase sigma subunit (see citations below), similar to many e.g. Q45585|SIGW_BACSU RNA polymerase sigma factor from Bacillus subtilis (187 aa). Also similar to nine other ECF sigma factors from Mycobacterium tuberculosis e.g. Rv1221, Rv0735, etc. Contains PS01063 Sigma-70 factors ECF subfamily signature and probable helix-turn helix motif from aa 205-226 (Score 1181, +3.21 SD). Belongs to the sigma-70 factor family, ECF subfamily. |
| Functional category | Information pathways |
| Proteomics | Identified in the cell membrane fraction of M. tuberculosis H37Rv using 2DLC/MS (See Mawuenyega et al., 2005). Identified by mass spectrometry in M. tuberculosis H37Rv-infected guinea pig lungs at 90 days but not 30 days (See Kruh et al., 2010). Identified by mass spectrometry in whole cell lysates of M. tuberculosis H37Rv but not the culture filtrate or membrane protein fraction (See de Souza et al., 2011). |
| Transcriptomics | mRNA identified by SCOTS method, during infection of cultured human primary macrophages (see Graham & Clark-Curtiss 1999). mRNA identified by real-time quantitative RT-PCR during exponential growing cultures. mRNA level (identified by real-time quantitative RT-PCR) decreased after mild cold shock (see Manganelli et al., 1999). |
| Mutant | Non-essential gene for in vitro growth of H37Rv in a MtbYM rich medium, by Himar1 transposon mutagenesis (see Minato et al. 2019). Non-essential gene for in vitro growth of H37Rv, by analysis of saturated Himar1 transposon libraries (see DeJesus et al. 2017). Non essential gene by Himar1 transposon mutagenesis in H37Rv and CDC1551 strains (see Sassetti et al., 2003 and Lamichhane et al., 2003). Non-essential gene for in vitro growth of H37Rv, by Himar1 transposon mutagenesis (See Griffin et al., 2011). M. tuberculosis CDC1551 sigG|Rv0182c mutant has growth defect in murine J774A.1 alveolar macrophages; mutant is resistant to mitomycin C (See Lee et al., 2008). Check for mutants available at TARGET website |
Coordinates
| Type | Start | End | Orientation |
|---|---|---|---|
| CDS | 213028 | 214140 | - |
Genomic sequence
Feature type
Upstream flanking region (bp)
Downstream flanking region (bp)
Update
Protein sequence
>Mycobacterium tuberculosis H37Rv|Rv0182c|sigG
MRTSPMPAKFRSVRVVVITGSVTAAPVRVSETLRRLIDVSVLAENSGREPADERRGDFSAHTEPYRRELLAHCYRMTGSLHDAEDLVQETLLRAWKAYEGFAGKSSLRTWLHRIATNTCLTALEGRRRRPLPTGLGRPSADPSGELVERREVSWLEPLPDVTDDPADPSTIVGNRESVRLAFVAALQHLSPRQRAVLLLRDVLQWKSAEVADAIGTSTVAVNSLLQRARSQLQTVRPSAADRLSAPDSPEAQDLLARYIAAFEAYDIDRLVELFTAEAIWEMPPYTGWYQGAQAIVTLIHQQCPAYSPGDMRLISLIANGQPAAAMYMRAGDVHLPFQLHVLDMAADRVSHVVAFLDTTLFPKFGLPDSL
Bibliography
- Gomez JE et al. [1997]. Sigma factors of Mycobacterium tuberculosis. Review
- Manganelli R et al. [1999]. Differential expression of 10 sigma factor genes in Mycobacterium tuberculosis. Transcriptome
- Graham JE and Clark-Curtiss JE [1999]. Identification of Mycobacterium tuberculosis RNAs synthesized in response to phagocytosis by human macrophages by selective capture of transcribed sequences (SCOTS). Transcriptome
- Chen P, Gomez J and Bishai WR [2000]. Review
- Lamichhane G et al. [2003]. A postgenomic method for predicting essential genes at subsaturation levels of mutagenesis: application to Mycobacterium tuberculosis. Mutant
- Sassetti CM et al. [2003]. Genes required for mycobacterial growth defined by high density mutagenesis. Mutant
- Mawuenyega KG et al. [2005]. Mycobacterium tuberculosis functional network analysis by global subcellular protein profiling. Proteomics
- Lee JH et al. [2008]. Role of stress response sigma factor SigG in Mycobacterium tuberculosis. Mutant Regulon
- Kruh NA et al. [2010]. Portrait of a pathogen: the Mycobacterium tuberculosis proteome in vivo. Proteomics
- de Souza GA et al. [2011]. Bacterial proteins with cleaved or uncleaved signal peptides of the general secretory pathway. Proteomics
- Griffin JE et al. [2011]. High-resolution phenotypic profiling defines genes essential for mycobacterial growth and cholesterol catabolism. Mutant
- DeJesus MA et al. [2017]. Comprehensive Essentiality Analysis of the Mycobacterium tuberculosis Genome via Saturating Transposon Mutagenesis. Mutant
- Minato Y et al. [2019]. Genomewide Assessment of Mycobacterium tuberculosis Conditionally Essential Metabolic Pathways. Mutant
