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UniProtKB - Q9EZJ8 (SIGA_THEAQ)

Entry version 103 (02 Jun 2021)
Sequence version 1 (01 Mar 2001)
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Protein

RNA polymerase sigma factor SigA

Gene

sigA

Organism
Thermus aquaticus
Status
Reviewed-Annotation score:

Annotation score:4 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. This sigma factor is the primary sigma factor during exponential growth.

UniRule annotation2 Publications

Regions

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the <a href="http://www.uniprot.org/help/function%5Fsection">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 bindingi398 – 417H-T-H motifUniRule annotationAdd 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

Complete GO annotation on QuickGO ...

GO - Biological processi

Complete GO annotation on QuickGO ...

<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 processTranscription, Transcription regulation

<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%5Fand%5Ftaxonomy%5Fsection">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 SigAUniRule annotation
<p>This subsection of the <a href="http://www.uniprot.org/help/names%5Fand%5Ftaxonomy%5Fsection">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:sigAUniRule annotation
<p>This subsection of the <a href="http://www.uniprot.org/help/names%5Fand%5Ftaxonomy%5Fsection">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>OrganismiThermus aquaticus
<p>This subsection of the <a href="http://www.uniprot.org/help/names%5Fand%5Ftaxonomy%5Fsection">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 identifieri271 [NCBI]
<p>This subsection of the <a href="http://www.uniprot.org/help/names%5Fand%5Ftaxonomy%5Fsection">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 lineageiBacteria › Deinococcus-Thermus › Deinococci › Thermales › Thermaceae › Thermus

<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

Keywords - Cellular componenti

Cytoplasm

<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 or proteolytic cleavage.<p><a href='/help/chain' target='_top'>More...</a></p>ChainiPRO_00004230111 – 438RNA polymerase sigma factor SigAAdd BLAST438

<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%5Fsection">'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%5Fsection">'Function'</a> section).<p><a href='/help/subunit_structure' target='_top'>More...</a></p>Subunit structurei

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.

UniRule annotation5 Publications

Protein-protein interaction databases

Database of interacting proteins

More...DIPi		DIP-49014N

Protein interaction database and analysis system

More...IntActi		Q9EZJ8, 1 interactor

<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

Secondary structure

1438
Legend: HelixTurnBeta strandPDB Structure known for this area
Show more details

3D structure databases

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

More...SMRi		Q9EZJ8

Database of comparative protein structure models

More...ModBasei		Search...

Protein Data Bank in Europe - Knowledge Base

More...PDBe-KBi		Search...

Miscellaneous databases

Relative evolutionary importance of amino acids within a protein sequence

More...EvolutionaryTracei		Q9EZJ8

<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 – 69DisorderedSequence analysisAdd BLAST69
Regioni93 – 128Sigma-70 factor domain-1Add BLAST36
Regioni202 – 272Sigma-70 factor domain-2Add BLAST71
Regioni281 – 359Sigma-70 factor domain-3Add BLAST79
Regioni372 – 424Sigma-70 factor domain-4Add BLAST53

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>Motifi226 – 229Interaction with polymerase core subunit RpoC4

Compositional bias

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the 'Family and Domains' section describes the position of regions of compositional bias within the protein and the particular type of amino acids that are over-represented within those regions.<p><a href='/help/compbias' target='_top'>More...</a></p>Compositional biasi10 – 30Basic and acidic residuesSequence analysisAdd BLAST21
Compositional biasi31 – 63Acidic residuesSequence analysisAdd BLAST33

<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

Contains 4 domains, connected by flexible linkers. In the active conformation, the domains are in an extended conformation, each making extensive interactions with the RNA polymerase catalytic core (PubMed:11931761 and PubMed:12016306).
In the autoinhibited state, sigma-70 factor domain-1 packs closely together with sigma-70 factor domains-2 and -4, contrary to the extended conformation that is seen when the protein is part of the RNA polymerase holoenzyme.By similarity
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 (PubMed:11931761 and PubMed:22136875).
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. Interactions between sigma-70 factor domain-4 and anti-sigma factors prevents interaction of sigma factors with the RNA polymerase catalytic core (PubMed:11931761).1 Publication

<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. RpoD/SigA subfamily.UniRule annotation

Family and domain databases

Gene3D Structural and Functional Annotation of Protein Families

More...Gene3Di		1.10.10.10, 2 hits

HAMAP database of protein families

More...HAMAPi		MF_00963, Sigma70_RpoD_SigA, 1 hit

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
IPR012760, RNA_pol_sigma_RpoD_C
IPR028630, Sigma70_RpoD
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		TIGR02393, RpoD_Cterm, 1 hit
TIGR02937, sigma70-ECF, 1 hit

PROSITE; a protein domain and family database

More...PROSITEi		View protein in PROSITE
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%5Flength">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%5Fsection">Sequence</a> section indicates if the <a href="http://www.uniprot.org/help/canonical%5Fand%5Fisoforms">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.

Q9EZJ8-1 [UniParc]FASTAAdd to basket
« Hide
        10         20         30         40         50
MKKSKSKKKA AKAQEVEVKE PVKEPEPLPE LEAAEDLQDL PEPDPELLAS 
        60         70         80         90        100
EPELEDLADP LDLEGPLEAD LLPEEGLLEE EEEELSLPKV STSDPVRQYL 
       110        120        130        140        150
HEIGQVPLLT LEEEIDLARK VEEGMEAIKK LSEATGLDQE LIREVVRAKI 
       160        170        180        190        200
LGTARIQKIP GLKEKPDPKT VEEVDGKLKS LPKELKRYLH IAREGEAARQ 
       210        220        230        240        250
HLIEANLRLV VSIAKKYTGR GLSFLDLIQE GNQGLIRAVE KFEYKRRFKF 
       260        270        280        290        300
STYATWWIRQ AINRAIADQA RTIRIPVHMV ETINKLSRTA RQLQQELGRE 
       310        320        330        340        350
PSYEEIAEAM GPGWDAKRVE ETLKIAQEPV SLETPIGDEK DSFYGDFIPD 
       360        370        380        390        400
ENLPSPVEAA AQSLLSEELE KALSKLSERE AMVLKLRKGL IDGREHTLEE 
       410        420        430 
VGAYFGVTRE RIRQIENKAL RKLKYHESRT RKLRDFLE
Length:438
Mass (Da):49,847
Last modified:March 1, 2001 - 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:i5D8ACF5713DE55AD
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
AF291720 Genomic DNA Translation: AAG36964.1

<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
AF291720 Genomic DNA Translation: AAG36964.1

3D structure databases

Select the link destinations:

Protein Data Bank Europe

More...PDBei

Protein Data Bank RCSB

More...RCSB PDBi

Protein Data Bank Japan

More...PDBji
Links Updated
PDB entryMethodResolution (Å)ChainPositionsPDBsum
1KU2X-ray2.90A/B92-332[»]
1KU3X-ray1.80A366-438[»]
1KU7X-ray2.40A/D366-438[»]
1L9UX-ray4.00H/Q92-438[»]
1L9ZX-ray6.50H1-438[»]
1RIOX-ray2.30H366-438[»]
3LESX-ray2.77A/B93-271[»]
3LEVX-ray2.50A93-271[»]
3N97X-ray3.25A/D366-438[»]
3UGOX-ray2.10A92-332[»]
3UGPX-ray2.70A92-332[»]
4KI2X-ray3.61A/B92-332[»]
4XLNX-ray4.00F/L92-438[»]
4XLPX-ray4.00F/L92-438[»]
4XLQX-ray4.60F/L92-438[»]
4XLRX-ray4.30F/L92-438[»]
4XLSX-ray4.01F/L92-438[»]
5TJGX-ray2.60F92-438[»]
SMRiQ9EZJ8
ModBaseiSearch...
PDBe-KBiSearch...

Protein-protein interaction databases

DIPiDIP-49014N
IntActiQ9EZJ8, 1 interactor

Miscellaneous databases

EvolutionaryTraceiQ9EZJ8

Family and domain databases

Gene3Di1.10.10.10, 2 hits
HAMAPiMF_00963, Sigma70_RpoD_SigA, 1 hit
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
IPR012760, RNA_pol_sigma_RpoD_C
IPR028630, Sigma70_RpoD
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
TIGRFAMsiTIGR02393, RpoD_Cterm, 1 hit
TIGR02937, sigma70-ECF, 1 hit
PROSITEiView protein in PROSITE
PS00716, SIGMA70_2, 1 hit

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 nameiSIGA_THEAQ
<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: Q9EZJ8
<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%5Fand%5Fisoforms">canonical sequence</a> are also displayed.<p><a href='/help/entry_history' target='_top'>More...</a></p>Entry historyiIntegrated into UniProtKB/Swiss-Prot: July 24, 2013
Last sequence update: March 1, 2001
Last modified: June 2, 2021
This is version 103 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

3D-structure, Direct protein sequencing

Documents

  1. PDB cross-references
    Index of Protein Data Bank (PDB) cross-references
  2. SIMILARITY comments
    Index of protein domains and families
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