Skip Header

You are using a version of browser that may not display all the features of this website. Please consider upgrading your browser.
Entry version 157 (10 Feb 2021)
Sequence version 1 (01 Aug 1990)
Previous versions | rss
Add a publicationFeedback
Protein

HTH-type transcriptional regulator ChbR

Gene

chbR

Organism
Escherichia coli (strain K12)
Status
Reviewed-Annotation score:

Annotation score:3 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

Dual-function repressor/activator of the chbBCARFG operon. In the absence of the inducing sugar chitobiose, together with NagC, represses the chbBCARFG operon for the uptake and metabolism of chitobiose. In association with Crp, and probably in the presence of chitobiose 6-phosphate, induces the transcription of the chbBCARFG operon.1 Publication

Miscellaneous

Under prolonged growth on cellobiose as the sole carbon source, spontaneous mutations in chbR and nagC alter the regulation of the chbBCARFG operon, allowing the uptake and metabolism of cellobiose. The mutated regulator makes stronger contact with the target DNA sequence within the chb promoter and has enhanced recognition of cellobiose 6-phosphate as an inducer.

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 bindingi193 – 214H-T-H motifPROSITE-ProRule annotationAdd BLAST22
DNA bindingi241 – 264H-T-H motifPROSITE-ProRule annotationAdd BLAST24

<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

  • negative regulation of transcription, DNA-templated Source: EcoCyc

<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, Repressor
Biological processTranscription, Transcription regulation

Enzyme and pathway databases

BioCyc Collection of Pathway/Genome Databases

More...
BioCyci
EcoCyc:EG10143-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%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 ChbR
Alternative name(s):
Chb operon repressor
<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:chbR
Synonyms:celD
Ordered Locus Names:b1735, JW1724
<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 lineageiBacteriaProteobacteriaGammaproteobacteriaEnterobacteralesEnterobacteriaceaeEscherichia
<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 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_00001945061 – 280HTH-type transcriptional regulator ChbRAdd BLAST280

Proteomic databases

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

More...
PaxDbi
P17410

PRoteomics IDEntifications database

More...
PRIDEi
P17410

<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

By N,N'-diacetylchitobiose.

<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

Homodimer.

1 Publication

Protein-protein interaction databases

The Biological General Repository for Interaction Datasets (BioGRID)

More...
BioGRIDi
4259133, 10 interactors
850607, 7 interactors

Protein interaction database and analysis system

More...
IntActi
P17410, 7 interactors

STRING: functional protein association networks

More...
STRINGi
511145.b1735

<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
P17410

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>Domaini168 – 274HTH araC/xylS-typePROSITE-ProRule annotationAdd BLAST107

Phylogenomic databases

evolutionary genealogy of genes: Non-supervised Orthologous Groups

More...
eggNOGi
COG1917, Bacteria
COG2169, Bacteria

The HOGENOM Database of Homologous Genes from Fully Sequenced Organisms

More...
HOGENOMi
CLU_000445_88_19_6

InParanoid: Eukaryotic Ortholog Groups

More...
InParanoidi
P17410

Database for complete collections of gene phylogenies

More...
PhylomeDBi
P17410

Family and domain databases

Gene3D Structural and Functional Annotation of Protein Families

More...
Gene3Di
2.60.120.10, 1 hit

Integrated resource of protein families, domains and functional sites

More...
InterProi
View protein in InterPro
IPR013096, Cupin_2
IPR009057, Homeobox-like_sf
IPR018060, HTH_AraC
IPR018062, HTH_AraC-typ_CS
IPR014710, RmlC-like_jellyroll
IPR011051, RmlC_Cupin_sf
IPR020449, Tscrpt_reg_HTH_AraC-type

Pfam protein domain database

More...
Pfami
View protein in Pfam
PF07883, Cupin_2, 1 hit
PF12833, HTH_18, 1 hit

Protein Motif fingerprint database; a protein domain database

More...
PRINTSi
PR00032, HTHARAC

Simple Modular Architecture Research Tool; a protein domain database

More...
SMARTi
View protein in SMART
SM00342, HTH_ARAC, 1 hit

Superfamily database of structural and functional annotation

More...
SUPFAMi
SSF46689, SSF46689, 1 hit
SSF51182, SSF51182, 1 hit

PROSITE; a protein domain and family database

More...
PROSITEi
View protein in PROSITE
PS00041, HTH_ARAC_FAMILY_1, 1 hit
PS01124, HTH_ARAC_FAMILY_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.

P17410-1 [UniParc]FASTAAdd to basket
« Hide
        10         20         30         40         50
MMQPVINAPE IATAREQQLF NGKNFHVFIY NKTESISGLH QHDYYEFTLV
60 70 80 90 100
LTGRYFQEIN GKRVLLERGD FVFIPLGSHH QSFYEFGATR ILNVGISKRF
110 120 130 140 150
FEQHYLPLLP YCFVASQVYR TNNAFLTYVE TVISSLNFRE TGLEEFVEMV
160 170 180 190 200
TFYVINRLRH YREEQVIDDV PQWLKSTVEK MHDKEQFSES ALENMVALSA
210 220 230 240 250
KSQEYLTRAT QRYYGKTPMQ IINEIRINFA KKQLEMTNYS VTDIAFEAGY
260 270 280
SSPSLFIKTF KKLTSFTPKS YRKKLTEFNQ
Length:280
Mass (Da):32,968
Last modified:August 1, 1990 - 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:i281152CAEF363B2F
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
X52890 Genomic DNA Translation: CAA37072.1
U00096 Genomic DNA Translation: AAC74805.1
AP009048 Genomic DNA Translation: BAA15516.1

Protein sequence database of the Protein Information Resource

More...
PIRi
S10873

NCBI Reference Sequences

More...
RefSeqi
NP_416249.1, NC_000913.3
WP_000983647.1, NZ_LN832404.1

Genome annotation databases

Ensembl bacterial and archaeal genome annotation project

More...
EnsemblBacteriai
AAC74805; AAC74805; b1735
BAA15516; BAA15516; BAA15516

Database of genes from NCBI RefSeq genomes

More...
GeneIDi
57731131
946247

KEGG: Kyoto Encyclopedia of Genes and Genomes

More...
KEGGi
ecj:JW1724
eco:b1735

Pathosystems Resource Integration Center (PATRIC)

More...
PATRICi
fig|511145.12.peg.1807

<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
X52890 Genomic DNA Translation: CAA37072.1
U00096 Genomic DNA Translation: AAC74805.1
AP009048 Genomic DNA Translation: BAA15516.1
PIRiS10873
RefSeqiNP_416249.1, NC_000913.3
WP_000983647.1, NZ_LN832404.1

3D structure databases

SMRiP17410
ModBaseiSearch...

Protein-protein interaction databases

BioGRIDi4259133, 10 interactors
850607, 7 interactors
IntActiP17410, 7 interactors
STRINGi511145.b1735

Proteomic databases

PaxDbiP17410
PRIDEiP17410

Genome annotation databases

EnsemblBacteriaiAAC74805; AAC74805; b1735
BAA15516; BAA15516; BAA15516
GeneIDi57731131
946247
KEGGiecj:JW1724
eco:b1735
PATRICifig|511145.12.peg.1807

Organism-specific databases

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

More...
EchoBASEi
EB0141

Phylogenomic databases

eggNOGiCOG1917, Bacteria
COG2169, Bacteria
HOGENOMiCLU_000445_88_19_6
InParanoidiP17410
PhylomeDBiP17410

Enzyme and pathway databases

BioCyciEcoCyc:EG10143-MONOMER

Miscellaneous databases

Protein Ontology

More...
PROi
PR:P17410

Family and domain databases

Gene3Di2.60.120.10, 1 hit
InterProiView protein in InterPro
IPR013096, Cupin_2
IPR009057, Homeobox-like_sf
IPR018060, HTH_AraC
IPR018062, HTH_AraC-typ_CS
IPR014710, RmlC-like_jellyroll
IPR011051, RmlC_Cupin_sf
IPR020449, Tscrpt_reg_HTH_AraC-type
PfamiView protein in Pfam
PF07883, Cupin_2, 1 hit
PF12833, HTH_18, 1 hit
PRINTSiPR00032, HTHARAC
SMARTiView protein in SMART
SM00342, HTH_ARAC, 1 hit
SUPFAMiSSF46689, SSF46689, 1 hit
SSF51182, SSF51182, 1 hit
PROSITEiView protein in PROSITE
PS00041, HTH_ARAC_FAMILY_1, 1 hit
PS01124, HTH_ARAC_FAMILY_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 nameiCHBR_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: P17410
<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: August 1, 1990
Last sequence update: August 1, 1990
Last modified: February 10, 2021
This is version 157 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
UniProt is an ELIXIR core data resource
Main funding by: National Institutes of Health

We'd like to inform you that we have updated our Privacy Notice to comply with Europe’s new General Data Protection Regulation (GDPR) that applies since 25 May 2018.

Do not show this banner again