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Entry version 32 (18 Sep 2019)
Sequence version 1 (16 Apr 2014)
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Protein

RNA polymerase sigma factor SigB

Gene

sigB

Organism
Mycobacterium tuberculosis (strain ATCC 25618 / H37Rv)
Status
Reviewed-Annotation score:

Annotation score:5 out of 5

<p>The annotation score provides a heuristic measure of the annotation content of a UniProtKB entry or proteome. This score <strong>cannot</strong> be used as a measure of the accuracy of the annotation as we cannot define the ‘correct annotation’ for any given protein.<p><a href='/help/annotation_score' target='_top'>More...</a></p>
-Experimental evidence at protein leveli <p>This indicates the type of evidence that supports the existence of the protein. Note that the ‘protein existence’ evidence does not give information on the accuracy or correctness of the sequence(s) displayed.<p><a href='/help/protein_existence' target='_top'>More...</a></p>

<p>This section provides any useful information about the protein, mostly biological knowledge.<p><a href='/help/function_section' target='_top'>More...</a></p>Functioni

Sigma factors are initiation factors that promote the attachment of RNA polymerase to specific initiation sites and are then released. A non-essential principal sigma factor that responds to cell envelope stress and hypoxia. Controls a regulon of about 40 genes, with another 100 genes expression being altered during SDS stress and about 50 gene being altered during diamide (oxidative) stress.1 Publication

Regions

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the <a href="http://www.uniprot.org/help/function_section">Function</a> section specifies the position and type of each DNA-binding domain present within the protein.<p><a href='/help/dna_bind' target='_top'>More...</a></p>DNA bindingi284 – 303H-T-H motifBy similarityAdd BLAST20

<p>The <a href="http://www.geneontology.org/">Gene Ontology (GO)</a> project provides a set of hierarchical controlled vocabulary split into 3 categories:<p><a href='/help/gene_ontology' target='_top'>More...</a></p>GO - Molecular functioni

GO - Biological processi

<p>UniProtKB Keywords constitute a <a href="http://www.uniprot.org/keywords">controlled vocabulary</a> with a hierarchical structure. Keywords summarise the content of a UniProtKB entry and facilitate the search for proteins of interest.<p><a href='/help/keywords' target='_top'>More...</a></p>Keywordsi

Molecular functionDNA-binding, Sigma factor
Biological processStress response, Transcription, Transcription regulation

Enzyme and pathway databases

BioCyc Collection of Pathway/Genome Databases

More...
BioCyci
MTBH37RV:G185E-6958-MONOMER

<p>This section provides information about the protein and gene name(s) and synonym(s) and about the organism that is the source of the protein sequence.<p><a href='/help/names_and_taxonomy_section' target='_top'>More...</a></p>Names & Taxonomyi

<p>This subsection of the <a href="http://www.uniprot.org/help/names_and_taxonomy_section">Names and taxonomy</a> section provides an exhaustive list of all names of the protein, from commonly used to obsolete, to allow unambiguous identification of a protein.<p><a href='/help/protein_names' target='_top'>More...</a></p>Protein namesi
Recommended name:
RNA polymerase sigma factor SigB
<p>This subsection of the <a href="http://www.uniprot.org/help/names_and_taxonomy_section">Names and taxonomy</a> section indicates the name(s) of the gene(s) that code for the protein sequence(s) described in the entry. Four distinct tokens exist: ‘Name’, ‘Synonyms’, ‘Ordered locus names’ and ‘ORF names’.<p><a href='/help/gene_name' target='_top'>More...</a></p>Gene namesi
Name:sigB
Synonyms:mysB
Ordered Locus Names:Rv2710
<p>This subsection of the <a href="http://www.uniprot.org/help/names_and_taxonomy_section">Names and taxonomy</a> section provides information on the name(s) of the organism that is the source of the protein sequence.<p><a href='/help/organism-name' target='_top'>More...</a></p>OrganismiMycobacterium tuberculosis (strain ATCC 25618 / H37Rv)
<p>This subsection of the <a href="http://www.uniprot.org/help/names_and_taxonomy_section">Names and taxonomy</a> section shows the unique identifier assigned by the NCBI to the source organism of the protein. This is known as the ‘taxonomic identifier’ or ‘taxid’.<p><a href='/help/taxonomic_identifier' target='_top'>More...</a></p>Taxonomic identifieri83332 [NCBI]
<p>This subsection of the <a href="http://www.uniprot.org/help/names_and_taxonomy_section">Names and taxonomy</a> section contains the taxonomic hierarchical classification lineage of the source organism. It lists the nodes as they appear top-down in the taxonomic tree, with the more general grouping listed first.<p><a href='/help/taxonomic_lineage' target='_top'>More...</a></p>Taxonomic lineageiBacteriaActinobacteriaCorynebacterialesMycobacteriaceaeMycobacteriumMycobacterium tuberculosis complex
<p>This subsection of the <a href="http://www.uniprot.org/help/names_and_taxonomy_section">Names and taxonomy</a> section is present for entries that are part of a <a href="http://www.uniprot.org/proteomes">proteome</a>, i.e. of a set of proteins thought to be expressed by organisms whose genomes have been completely sequenced.<p><a href='/help/proteomes_manual' target='_top'>More...</a></p>Proteomesi
  • UP000001584 <p>A UniProt <a href="http://www.uniprot.org/manual/proteomes_manual">proteome</a> can consist of several components. <br></br>The component name refers to the genomic component encoding a set of proteins.<p><a href='/help/proteome_component' target='_top'>More...</a></p> Componenti: Chromosome

Organism-specific databases

Mycobacterium tuberculosis strain H37Rv genome database

More...
TubercuListi
Rv2710

<p>This section provides information on the location and the topology of the mature protein in the cell.<p><a href='/help/subcellular_location_section' target='_top'>More...</a></p>Subcellular locationi

GO - Cellular componenti

<p>This section provides information on the disease(s) and phenotype(s) associated with a protein.<p><a href='/help/pathology_and_biotech_section' target='_top'>More...</a></p>Pathology & Biotechi

<p>This subsection of the ‘Pathology and Biotech’ section describes the in vivo effects caused by ablation of the gene (or one or more transcripts) coding for the protein described in the entry. This includes gene knockout and knockdown, provided experiments have been performed in the context of a whole organism or a specific tissue, and not at the single-cell level.<p><a href='/help/disruption_phenotype' target='_top'>More...</a></p>Disruption phenotypei

More sensitive to SDS (cell envelope stress) and hypoxic treatment in vitro. No effect in human THP-1 macrophage-like cells, intravenously inoculated BALB/c mice or aerosol-infected Hartley strain guinea pigs.1 Publication

<p>This section describes post-translational modifications (PTMs) and/or processing events.<p><a href='/help/ptm_processing_section' target='_top'>More...</a></p>PTM / Processingi

Molecule processing

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the ‘PTM / Processing’ section describes the extent of a polypeptide chain in the mature protein following processing.<p><a href='/help/chain' target='_top'>More...</a></p>ChainiPRO_00004236441 – 323RNA polymerase sigma factor SigBAdd BLAST323

Proteomic databases

PaxDb, a database of protein abundance averages across all three domains of life

More...
PaxDbi
P9WGI5

PRoteomics IDEntifications database

More...
PRIDEi
P9WGI5

<p>This section provides information on the expression of a gene at the mRNA or protein level in cells or in tissues of multicellular organisms.<p><a href='/help/expression_section' target='_top'>More...</a></p>Expressioni

<p>This subsection of the ‘Expression’ section reports the experimentally proven effects of inducers and repressors (usually chemical compounds or environmental factors) on the level of protein (or mRNA) expression (up-regulation, down-regulation, constitutive expression).<p><a href='/help/induction' target='_top'>More...</a></p>Inductioni

Expressed in exponential phase, peaks at 10 days and decreases after up to 50 days in culture; induced by detergent (11-fold), heat shock (23-fold, 45 degrees Celsius), low aeration (2.5-fold) and oxidative stress (2.7-fold, SigE and SigH responsive). Seen to be induced (PubMed:9882660) and slightly repressed (PubMed:10027986) by 10 mM H2O2. 2- to 6-fold induced by starvation. Its basal expression is largely under control of SigE, probably via MrpAB, although other factors including SigH also play a role. Half-life of about 2 minutes.6 Publications

<p>This section provides information on the quaternary structure of a protein and on interaction(s) with other proteins or protein complexes.<p><a href='/help/interaction_section' target='_top'>More...</a></p>Interactioni

<p>This subsection of the <a href="http://www.uniprot.org/help/interaction_section">'Interaction'</a> section provides information about the protein quaternary structure and interaction(s) with other proteins or protein complexes (with the exception of physiological receptor-ligand interactions which are annotated in the <a href="http://www.uniprot.org/help/function_section">'Function'</a> section).<p><a href='/help/subunit_structure' target='_top'>More...</a></p>Subunit structurei

Monomer (Probable).

Interacts transiently with the RNA polymerase catalytic core formed by RpoA, RpoB, RpoC and RpoZ (2 alpha, 1 beta, 1 beta' and 1 omega subunit) to form the RNA polymerase holoenzyme that can initiate transcription (By similarity).

Interacts with RbpA, probably 1:1.

By similarityCurated2 Publications

GO - Molecular functioni

Protein-protein interaction databases

STRING: functional protein association networks

More...
STRINGi
83332.Rv2710

Chemistry databases

BindingDB database of measured binding affinities

More...
BindingDBi
P9WGI5

<p>This section provides information on the tertiary and secondary structure of a protein.<p><a href='/help/structure_section' target='_top'>More...</a></p>Structurei

3D structure databases

SWISS-MODEL Repository - a database of annotated 3D protein structure models

More...
SMRi
P9WGI5

Database of comparative protein structure models

More...
ModBasei
Search...

<p>This section provides information on sequence similarities with other proteins and the domain(s) present in a protein.<p><a href='/help/family_and_domains_section' target='_top'>More...</a></p>Family & Domainsi

Region

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the ‘Family and Domains’ section describes a region of interest that cannot be described in other subsections.<p><a href='/help/region' target='_top'>More...</a></p>Regioni1 – 228Sufficient to interact with RbpAAdd BLAST228
Regioni25 – 59Sigma-70 factor domain-1Add BLAST35
Regioni90 – 160Sigma-70 factor domain-2Add BLAST71
Regioni169 – 245Sigma-70 factor domain-3Add BLAST77
Regioni258 – 311Sigma-70 factor domain-4Add BLAST54

Motif

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the ‘Family and Domains’ section describes a short (usually not more than 20 amino acids) conserved sequence motif of biological significance.<p><a href='/help/motif' target='_top'>More...</a></p>Motifi114 – 117Polymerase core bindingSequence analysis4

<p>This subsection of the ‘Family and domains’ section provides general information on the biological role of a domain. The term ‘domain’ is intended here in its wide acceptation, it may be a structural domain, a transmembrane region or a functional domain. Several domains are described in this subsection.<p><a href='/help/domain_cc' target='_top'>More...</a></p>Domaini

The sigma-70 factor domain-2 mediates sequence-specific interaction with the -10 element in promoter DNA, and plays an important role in melting the double-stranded DNA and the formation of the transcription bubble. The sigma-70 factor domain-2 mediates interaction with the RNA polymerase subunits RpoB and RpoC (By similarity).By similarity
The sigma-70 factor domain-4 contains a helix-turn-helix (H-T-H) motif that mediates interaction with the -35 element in promoter DNA. The domain also mediates interaction with the RNA polymerase subunit RpoA (By similarity).By similarity

<p>This subsection of the ‘Family and domains’ section provides information about the sequence similarity with other proteins.<p><a href='/help/sequence_similarities' target='_top'>More...</a></p>Sequence similaritiesi

Belongs to the sigma-70 factor family.Curated

Phylogenomic databases

evolutionary genealogy of genes: Non-supervised Orthologous Groups

More...
eggNOGi
ENOG4105DG1 Bacteria
COG0568 LUCA

KEGG Orthology (KO)

More...
KOi
K03087

Identification of Orthologs from Complete Genome Data

More...
OMAi
YQRWLAE

Database for complete collections of gene phylogenies

More...
PhylomeDBi
P9WGI5

Family and domain databases

Gene3D Structural and Functional Annotation of Protein Families

More...
Gene3Di
1.10.10.10, 2 hits

Integrated resource of protein families, domains and functional sites

More...
InterProi
View protein in InterPro
IPR014284 RNA_pol_sigma-70_dom
IPR000943 RNA_pol_sigma70
IPR009042 RNA_pol_sigma70_r1_2
IPR007627 RNA_pol_sigma70_r2
IPR007624 RNA_pol_sigma70_r3
IPR007630 RNA_pol_sigma70_r4
IPR013325 RNA_pol_sigma_r2
IPR013324 RNA_pol_sigma_r3/r4-like
IPR036388 WH-like_DNA-bd_sf

Pfam protein domain database

More...
Pfami
View protein in Pfam
PF00140 Sigma70_r1_2, 1 hit
PF04542 Sigma70_r2, 1 hit
PF04539 Sigma70_r3, 1 hit
PF04545 Sigma70_r4, 1 hit

Protein Motif fingerprint database; a protein domain database

More...
PRINTSi
PR00046 SIGMA70FCT

Superfamily database of structural and functional annotation

More...
SUPFAMi
SSF88659 SSF88659, 2 hits
SSF88946 SSF88946, 1 hit

TIGRFAMs; a protein family database

More...
TIGRFAMsi
TIGR02937 sigma70-ECF, 1 hit

PROSITE; a protein domain and family database

More...
PROSITEi
View protein in PROSITE
PS00715 SIGMA70_1, 1 hit
PS00716 SIGMA70_2, 1 hit

<p>This section displays by default the canonical protein sequence and upon request all isoforms described in the entry. It also includes information pertinent to the sequence(s), including <a href="http://www.uniprot.org/help/sequence_length">length</a> and <a href="http://www.uniprot.org/help/sequences">molecular weight</a>. The information is filed in different subsections. The current subsections and their content are listed below:<p><a href='/help/sequences_section' target='_top'>More...</a></p>Sequencei

<p>This subsection of the <a href="http://www.uniprot.org/help/sequences_section">Sequence</a> section indicates if the <a href="http://www.uniprot.org/help/canonical_and_isoforms">canonical sequence</a> displayed by default in the entry is complete or not.<p><a href='/help/sequence_status' target='_top'>More...</a></p>Sequence statusi: Complete.

P9WGI5-1 [UniParc]FASTAAdd to basket
« Hide
        10         20         30         40         50
MADAPTRATT SRVDSDLDAQ SPAADLVRVY LNGIGKTALL NAAGEVELAK
60 70 80 90 100
RIEAGLYAEH LLETRKRLGE NRKRDLAAVV RDGEAARRHL LEANLRLVVS
110 120 130 140 150
LAKRYTGRGM PLLDLIQEGN LGLIRAMEKF DYTKGFKFST YATWWIRQAI
160 170 180 190 200
TRGMADQSRT IRLPVHLVEQ VNKLARIKRE MHQHLGREAT DEELAAESGI
210 220 230 240 250
PIDKINDLLE HSRDPVSLDM PVGSEEEAPL GDFIEDAEAM SAENAVIAEL
260 270 280 290 300
LHTDIRSVLA TLDEREHQVI RLRFGLDDGQ PRTLDQIGKL FGLSRERVRQ
310 320
IERDVMSKLR HGERADRLRS YAS
Length:323
Mass (Da):36,343
Last modified:April 16, 2014 - v1
<p>The checksum is a form of redundancy check that is calculated from the sequence. It is useful for tracking sequence updates.</p> <p>It should be noted that while, in theory, two different sequences could have the same checksum value, the likelihood that this would happen is extremely low.</p> <p>However UniProtKB may contain entries with identical sequences in case of multiple genes (paralogs).</p> <p>The checksum is computed as the sequence 64-bit Cyclic Redundancy Check value (CRC64) using the generator polynomial: x<sup>64</sup> + x<sup>4</sup> + x<sup>3</sup> + x + 1. The algorithm is described in the ISO 3309 standard. </p> <p class="publication">Press W.H., Flannery B.P., Teukolsky S.A. and Vetterling W.T.<br /> <strong>Cyclic redundancy and other checksums</strong><br /> <a href="http://www.nrbook.com/b/bookcpdf.php">Numerical recipes in C 2nd ed., pp896-902, Cambridge University Press (1993)</a>)</p> Checksum:i761DA93B9A18242F
GO

Sequence databases

Select the link destinations:

EMBL nucleotide sequence database

More...
EMBLi

GenBank nucleotide sequence database

More...
GenBanki

DNA Data Bank of Japan; a nucleotide sequence database

More...
DDBJi
Links Updated
U10059 Genomic DNA Translation: AAA86044.1
AL123456 Genomic DNA Translation: CCP45508.1

Protein sequence database of the Protein Information Resource

More...
PIRi
JC5011

NCBI Reference Sequences

More...
RefSeqi
NP_217226.1, NC_000962.3
WP_003413958.1, NZ_NVQJ01000017.1

Genome annotation databases

Ensembl bacterial and archaeal genome annotation project

More...
EnsemblBacteriai
CCP45508; CCP45508; Rv2710

Database of genes from NCBI RefSeq genomes

More...
GeneIDi
888580

KEGG: Kyoto Encyclopedia of Genes and Genomes

More...
KEGGi
mtu:Rv2710
mtv:RVBD_2710

<p>This section provides links to proteins that are similar to the protein sequence(s) described in this entry at different levels of sequence identity thresholds (100%, 90% and 50%) based on their membership in UniProt Reference Clusters (<a href="http://www.uniprot.org/help/uniref">UniRef</a>).<p><a href='/help/similar_proteins_section' target='_top'>More...</a></p>Similar proteinsi

<p>This section is used to point to information related to entries and found in data collections other than UniProtKB.<p><a href='/help/cross_references_section' target='_top'>More...</a></p>Cross-referencesi

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
U10059 Genomic DNA Translation: AAA86044.1
AL123456 Genomic DNA Translation: CCP45508.1
PIRiJC5011
RefSeqiNP_217226.1, NC_000962.3
WP_003413958.1, NZ_NVQJ01000017.1

3D structure databases

SMRiP9WGI5
ModBaseiSearch...

Protein-protein interaction databases

STRINGi83332.Rv2710

Chemistry databases

BindingDBiP9WGI5

Proteomic databases

PaxDbiP9WGI5
PRIDEiP9WGI5

Genome annotation databases

EnsemblBacteriaiCCP45508; CCP45508; Rv2710
GeneIDi888580
KEGGimtu:Rv2710
mtv:RVBD_2710

Organism-specific databases

TubercuListiRv2710

Phylogenomic databases

eggNOGiENOG4105DG1 Bacteria
COG0568 LUCA
KOiK03087
OMAiYQRWLAE
PhylomeDBiP9WGI5

Enzyme and pathway databases

BioCyciMTBH37RV:G185E-6958-MONOMER

Family and domain databases

Gene3Di1.10.10.10, 2 hits
InterProiView protein in InterPro
IPR014284 RNA_pol_sigma-70_dom
IPR000943 RNA_pol_sigma70
IPR009042 RNA_pol_sigma70_r1_2
IPR007627 RNA_pol_sigma70_r2
IPR007624 RNA_pol_sigma70_r3
IPR007630 RNA_pol_sigma70_r4
IPR013325 RNA_pol_sigma_r2
IPR013324 RNA_pol_sigma_r3/r4-like
IPR036388 WH-like_DNA-bd_sf
PfamiView protein in Pfam
PF00140 Sigma70_r1_2, 1 hit
PF04542 Sigma70_r2, 1 hit
PF04539 Sigma70_r3, 1 hit
PF04545 Sigma70_r4, 1 hit
PRINTSiPR00046 SIGMA70FCT
SUPFAMiSSF88659 SSF88659, 2 hits
SSF88946 SSF88946, 1 hit
TIGRFAMsiTIGR02937 sigma70-ECF, 1 hit
PROSITEiView protein in PROSITE
PS00715 SIGMA70_1, 1 hit
PS00716 SIGMA70_2, 1 hit

ProtoNet; Automatic hierarchical classification of proteins

More...
ProtoNeti
Search...

MobiDB: a database of protein disorder and mobility annotations

More...
MobiDBi
Search...

<p>This section provides general information on the entry.<p><a href='/help/entry_information_section' target='_top'>More...</a></p>Entry informationi

<p>This subsection of the ‘Entry information’ section provides a mnemonic identifier for a UniProtKB entry, but it is not a stable identifier. Each reviewed entry is assigned a unique entry name upon integration into UniProtKB/Swiss-Prot.<p><a href='/help/entry_name' target='_top'>More...</a></p>Entry nameiSIGB_MYCTU
<p>This subsection of the ‘Entry information’ section provides one or more accession number(s). These are stable identifiers and should be used to cite UniProtKB entries. Upon integration into UniProtKB, each entry is assigned a unique accession number, which is called ‘Primary (citable) accession number’.<p><a href='/help/accession_numbers' target='_top'>More...</a></p>AccessioniPrimary (citable) accession number: P9WGI5
Secondary accession number(s): O08496
, O08514, Q59563, Q79FB5, Q7D6Q4
<p>This subsection of the ‘Entry information’ section shows the date of integration of the entry into UniProtKB, the date of the last sequence update and the date of the last annotation modification (‘Last modified’). The version number for both the entry and the <a href="http://www.uniprot.org/help/canonical_and_isoforms">canonical sequence</a> are also displayed.<p><a href='/help/entry_history' target='_top'>More...</a></p>Entry historyiIntegrated into UniProtKB/Swiss-Prot: April 16, 2014
Last sequence update: April 16, 2014
Last modified: September 18, 2019
This is version 32 of the entry and version 1 of the sequence. See complete history.
<p>This subsection of the ‘Entry information’ section indicates whether the entry has been manually annotated and reviewed by UniProtKB curators or not, in other words, if the entry belongs to the Swiss-Prot section of UniProtKB (<strong>reviewed</strong>) or to the computer-annotated TrEMBL section (<strong>unreviewed</strong>).<p><a href='/help/entry_status' target='_top'>More...</a></p>Entry statusiReviewed (UniProtKB/Swiss-Prot)
Annotation programProkaryotic Protein Annotation Program

<p>This section contains any relevant information that doesn’t fit in any other defined sections<p><a href='/help/miscellaneous_section' target='_top'>More...</a></p>Miscellaneousi

Keywords - Technical termi

Complete proteome, Reference proteome

Documents

  1. SIMILARITY comments
    Index of protein domains and families
  2. Mycobacterium tuberculosis strains ATCC 25618 / H37Rv and CDC 1551 / Oshkosh
    Mycobacterium tuberculosis strains ATCC 25618 / H37Rv and CDC 1551 / Oshkosh: entries and gene names
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