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UniProtKB - P0A9F3 (CYSB_ECOLI)

Entry version 120 (10 Feb 2021)
Sequence version 1 (01 Jan 1988)
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Protein

HTH-type transcriptional regulator CysB

Gene

cysB

Organism
Escherichia coli (strain K12)
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>-Protein inferred from homologyi <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

This protein is a positive regulator of gene expression for the cysteine regulon, a system of 10 or more loci involved in the biosynthesis of L-cysteine from inorganic sulfate. The inducer for CysB is N-acetylserine. CysB inhibits its own transcription.

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 bindingi19 – 38H-T-H motifPROSITE-ProRule 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 functionActivator, DNA-binding
Biological processAmino-acid biosynthesis, Cysteine biosynthesis, Transcription, Transcription regulation

Enzyme and pathway databases

BioCyc Collection of Pathway/Genome Databases

More...BioCyci		EcoCyc:PD00232
MetaCyc:PD00232

<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:
HTH-type transcriptional regulator CysB
Alternative name(s):
Cys regulon transcriptional activator
<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:cysB
Ordered Locus Names:b1275, JW1267
<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>OrganismiEscherichia coli (strain K12)
<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 identifieri83333 [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 › Proteobacteria › Gammaproteobacteria › Enterobacterales › Enterobacteriaceae › Escherichia ›
<p>This subsection of the <a href="http://www.uniprot.org/help/names%5Fand%5Ftaxonomy%5Fsection">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
  • UP000000318 <p>A UniProt <a href="http://www.uniprot.org/manual/proteomes%5Fmanual">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
  • UP000000625 Componenti: Chromosome

<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_00001056131 – 324HTH-type transcriptional regulator CysBAdd BLAST324

Proteomic databases

jPOST - Japan Proteome Standard Repository/Database

More...jPOSTi		P0A9F3

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

More...PaxDbi		P0A9F3

PRoteomics IDEntifications database

More...PRIDEi		P0A9F3

<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

Homotetramer.

By similarity

GO - Molecular functioni

Complete GO annotation on QuickGO ...

Protein-protein interaction databases

The Biological General Repository for Interaction Datasets (BioGRID)

More...BioGRIDi		4260138, 28 interactors
850138, 3 interactors

Database of interacting proteins

More...DIPi		DIP-36048N

Protein interaction database and analysis system

More...IntActi		P0A9F3, 10 interactors

STRING: functional protein association networks

More...STRINGi		511145.b1275

<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		P0A9F3

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

Domains and Repeats

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the <a href="http://www.uniprot.org/help/family%5Fand%5Fdomains%5Fsection">Family and Domains</a> section describes the position and type of a domain, which is defined as a specific combination of secondary structures organized into a characteristic three-dimensional structure or fold.<p><a href='/help/domain' target='_top'>More...</a></p>Domaini1 – 59HTH lysR-typePROSITE-ProRule annotationAdd BLAST59

<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 LysR transcriptional regulatory family.Curated

Phylogenomic databases

evolutionary genealogy of genes: Non-supervised Orthologous Groups

More...eggNOGi		COG0583, Bacteria

The HOGENOM Database of Homologous Genes from Fully Sequenced Organisms

More...HOGENOMi		CLU_039613_6_2_6

InParanoid: Eukaryotic Ortholog Groups

More...InParanoidi		P0A9F3

Database for complete collections of gene phylogenies

More...PhylomeDBi		P0A9F3

Family and domain databases

Gene3D Structural and Functional Annotation of Protein Families

More...Gene3Di		1.10.10.10, 1 hit

Integrated resource of protein families, domains and functional sites

More...InterProi		View protein in InterPro
IPR005119, LysR_subst-bd
IPR000847, Tscrpt_reg_HTH_LysR
IPR036388, WH-like_DNA-bd_sf
IPR036390, WH_DNA-bd_sf

Pfam protein domain database

More...Pfami		View protein in Pfam
PF00126, HTH_1, 1 hit
PF03466, LysR_substrate, 1 hit

Protein Motif fingerprint database; a protein domain database

More...PRINTSi		PR00039, HTHLYSR

Superfamily database of structural and functional annotation

More...SUPFAMi		SSF46785, SSF46785, 1 hit

PROSITE; a protein domain and family database

More...PROSITEi		View protein in PROSITE
PS50931, HTH_LYSR, 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.

P0A9F3-1 [UniParc]FASTAAdd to basket
« Hide
        10         20         30         40         50
MKLQQLRYIV EVVNHNLNVS STAEGLYTSQ PGISKQVRML EDELGIQIFS 
        60         70         80         90        100
RSGKHLTQVT PAGQEIIRIA REVLSKVDAI KSVAGEHTWP DKGSLYIATT 
       110        120        130        140        150
HTQARYALPN VIKGFIERYP RVSLHMHQGS PTQIADAVSK GNADFAIATE 
       160        170        180        190        200
ALHLYEDLVM LPCYHWNRAI VVTPDHPLAG KKAITIEELA QYPLVTYTFG 
       210        220        230        240        250
FTGRSELDTA FNRAGLTPRI VFTATDADVI KTYVRLGLGV GVIASMAVDP 
       260        270        280        290        300
VADPDLVRVD AHDIFSHSTT KIGFRRSTFL RSYMYDFIQR FAPHLTRDVV 
       310        320 
DAAVALRSNE EIEVMFKDIK LPEK
Length:324
Mass (Da):36,150
Last modified:January 1, 1988 - 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:i3B35E9CFEF6F4C84
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
M15041 Genomic DNA Translation: AAA23642.1
M34332 Genomic DNA Translation: AAA23643.1
U00096 Genomic DNA Translation: AAC74357.1
AP009048 Genomic DNA Translation: BAA14827.1
X60293 Genomic DNA Translation: CAA42833.1

Protein sequence database of the Protein Information Resource

More...PIRi		A26695, RGECCB

NCBI Reference Sequences

More...RefSeqi		NP_415791.1, NC_000913.3
WP_000776253.1, NZ_STEB01000005.1

Genome annotation databases

Ensembl bacterial and archaeal genome annotation project

More...EnsemblBacteriai		AAC74357; AAC74357; b1275
BAA14827; BAA14827; BAA14827

Database of genes from NCBI RefSeq genomes

More...GeneIDi		58460480
945771

KEGG: Kyoto Encyclopedia of Genes and Genomes

More...KEGGi		ecj:JW1267
eco:b1275

Pathosystems Resource Integration Center (PATRIC)

More...PATRICi		fig|1411691.4.peg.1009

<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
M15041 Genomic DNA Translation: AAA23642.1
M34332 Genomic DNA Translation: AAA23643.1
U00096 Genomic DNA Translation: AAC74357.1
AP009048 Genomic DNA Translation: BAA14827.1
X60293 Genomic DNA Translation: CAA42833.1
PIRiA26695, RGECCB
RefSeqiNP_415791.1, NC_000913.3
WP_000776253.1, NZ_STEB01000005.1

3D structure databases

SMRiP0A9F3
ModBaseiSearch...

Protein-protein interaction databases

BioGRIDi4260138, 28 interactors
850138, 3 interactors
DIPiDIP-36048N
IntActiP0A9F3, 10 interactors
STRINGi511145.b1275

Proteomic databases

jPOSTiP0A9F3
PaxDbiP0A9F3
PRIDEiP0A9F3

Genome annotation databases

EnsemblBacteriaiAAC74357; AAC74357; b1275
BAA14827; BAA14827; BAA14827
GeneIDi58460480
945771
KEGGiecj:JW1267
eco:b1275
PATRICifig|1411691.4.peg.1009

Organism-specific databases

EchoBASE - an integrated post-genomic database for E. coli

More...EchoBASEi		EB0181

Phylogenomic databases

eggNOGiCOG0583, Bacteria
HOGENOMiCLU_039613_6_2_6
InParanoidiP0A9F3
PhylomeDBiP0A9F3

Enzyme and pathway databases

BioCyciEcoCyc:PD00232
MetaCyc:PD00232

Miscellaneous databases

Protein Ontology

More...PROi		PR:P0A9F3

Family and domain databases

Gene3Di1.10.10.10, 1 hit
InterProiView protein in InterPro
IPR005119, LysR_subst-bd
IPR000847, Tscrpt_reg_HTH_LysR
IPR036388, WH-like_DNA-bd_sf
IPR036390, WH_DNA-bd_sf
PfamiView protein in Pfam
PF00126, HTH_1, 1 hit
PF03466, LysR_substrate, 1 hit
PRINTSiPR00039, HTHLYSR
SUPFAMiSSF46785, SSF46785, 1 hit
PROSITEiView protein in PROSITE
PS50931, HTH_LYSR, 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 nameiCYSB_ECOLI
<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: P0A9F3
Secondary accession number(s): P06613, P76834
<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: January 1, 1988
Last sequence update: January 1, 1988
Last modified: February 10, 2021
This is version 120 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

Reference proteome

Documents

  1. SIMILARITY comments
    Index of protein domains and families
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