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Entry version 159 (02 Dec 2020)
Sequence version 3 (01 Nov 1997)
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Protein

HTH-type transcriptional regulator LeuO

Gene

leuO

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>
-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

A global transcription factor. Activates transcription of the 9 following operons; yjjQ-bglJ, yjjP, acrEF, ybdO, yjcRQP, casABCDE12, rhsD-ybbC, fepE and gltF, in most cases it probably interferes with silencing by H-NS and activates transcription. Represses transcription of the 3 following operons; uxaCA, sdaCB and btsT. H-NS repression of the bgl operon, leading to the ability to metabolize some beta-glucosides. It also directly activates the bgl operon. Activation is H-NS and BglJ-RcsB independent.4 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 bindingi39 – 58H-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

GO - Biological processi

  • 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:PD00519

<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 LeuO
<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:leuO
Ordered Locus Names:b0076, JW0075
<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 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

Has no effect on leucine biosynthesis nor on bgl operon silencing.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 or proteolytic cleavage.<p><a href='/help/chain' target='_top'>More...</a></p>ChainiPRO_00001056601 – 314HTH-type transcriptional regulator LeuOAdd BLAST314

Proteomic databases

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

More...
PaxDbi
P10151

PRoteomics IDEntifications database

More...
PRIDEi
P10151

<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

Gene expression is repressed by H-NS, activated by itself. More highly expressed in minimal than rich medium, poorly expressed in exoponential growth, levels increase in stationary phase (at protein level).1 Publication

<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

Protein-protein interaction databases

The Biological General Repository for Interaction Datasets (BioGRID)

More...
BioGRIDi
4259484, 4 interactors
853278, 3 interactors

Protein interaction database and analysis system

More...
IntActi
P10151, 5 interactors

STRING: functional protein association networks

More...
STRINGi
511145.b0076

<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

1314
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
P10151

Database of comparative protein structure models

More...
ModBasei
Search...

Protein Data Bank in Europe - Knowledge Base

More...
PDBe-KBi
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>Domaini22 – 79HTH lysR-typePROSITE-ProRule annotationAdd BLAST58

<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

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_39_0_6

InParanoid: Eukaryotic Ortholog Groups

More...
InParanoidi
P10151

Database for complete collections of gene phylogenies

More...
PhylomeDBi
P10151

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.

P10151-1 [UniParc]FASTAAdd to basket
« Hide
        10         20         30         40         50
MPEVQTDHPE TAELSKPQLR MVDLNLLTVF DAVMQEQNIT RAAHVLGMSQ
60 70 80 90 100
PAVSNAVARL KVMFNDELFV RYGRGIQPTA RAFQLFGSVR QALQLVQNEL
110 120 130 140 150
PGSGFEPASS ERVFHLCVCS PLDSILTSQI YNHIEQIAPN IHVMFKSSLN
160 170 180 190 200
QNTEHQLRYQ ETEFVISYED FHRPEFTSVP LFKDEMVLVA SKNHPTIKGP
210 220 230 240 250
LLKHDVYNEQ HAAVSLDRFA SFSQPWYDTV DKQASIAYQG MAMMSVLSVV
260 270 280 290 300
SQTHLVAIAP RWLAEEFAES LELQVLPLPL KQNSRTCYLS WHEAAGRDKG
310
HQWMEEQLVS ICKR
Length:314
Mass (Da):35,695
Last modified:November 1, 1997 - v3
<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:i25605FA08C1073E3
GO

<p>This subsection of the 'Sequence' section reports difference(s) between the protein sequence shown in the UniProtKB entry and other available protein sequences derived from the same gene.<p><a href='/help/sequence_caution' target='_top'>More...</a></p>Sequence cautioni

The sequence AAA83880 differs from that shown. Reason: Erroneous initiation. Extended N-terminus.Curated
The sequence CAA38853 differs from that shown. Reason: Erroneous initiation. Extended N-terminus.Curated

Experimental Info

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the 'Sequence' section reports difference(s) between the canonical sequence (displayed by default in the entry) and the different sequence submissions merged in the entry. These various submissions may originate from different sequencing projects, different types of experiments, or different biological samples. Sequence conflicts are usually of unknown origin.<p><a href='/help/conflict' target='_top'>More...</a></p>Sequence conflicti291 – 314Missing in AAA85299 (PubMed:3413113).CuratedAdd BLAST24
Sequence conflicti291 – 314Missing in CAA38853 (PubMed:1630901).CuratedAdd BLAST24

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
M21150 Genomic DNA Translation: AAA85299.1
X55034 Genomic DNA Translation: CAA38853.1 Different initiation.
U00096 Genomic DNA Translation: AAC73187.2
AP009048 Genomic DNA Translation: BAB96645.2
M12891 Genomic DNA Translation: AAA83880.1 Different initiation.

Protein sequence database of the Protein Information Resource

More...
PIRi
D64729

NCBI Reference Sequences

More...
RefSeqi
NP_414618.4, NC_000913.3
WP_001115472.1, NZ_STEB01000010.1

Genome annotation databases

Ensembl bacterial and archaeal genome annotation project

More...
EnsemblBacteriai
AAC73187; AAC73187; b0076
BAB96645; BAB96645; BAB96645

Database of genes from NCBI RefSeq genomes

More...
GeneIDi
949034

KEGG: Kyoto Encyclopedia of Genes and Genomes

More...
KEGGi
ecj:JW0075
eco:b0076

Pathosystems Resource Integration Center (PATRIC)

More...
PATRICi
fig|1411691.4.peg.2205

<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
M21150 Genomic DNA Translation: AAA85299.1
X55034 Genomic DNA Translation: CAA38853.1 Different initiation.
U00096 Genomic DNA Translation: AAC73187.2
AP009048 Genomic DNA Translation: BAB96645.2
M12891 Genomic DNA Translation: AAA83880.1 Different initiation.
PIRiD64729
RefSeqiNP_414618.4, NC_000913.3
WP_001115472.1, NZ_STEB01000010.1

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
6GZ0X-ray1.52A109-314[»]
6GZ1X-ray1.74A109-314[»]
6GZ2X-ray1.94A109-314[»]
SMRiP10151
ModBaseiSearch...
PDBe-KBiSearch...

Protein-protein interaction databases

BioGRIDi4259484, 4 interactors
853278, 3 interactors
IntActiP10151, 5 interactors
STRINGi511145.b0076

Proteomic databases

PaxDbiP10151
PRIDEiP10151

Genome annotation databases

EnsemblBacteriaiAAC73187; AAC73187; b0076
BAB96645; BAB96645; BAB96645
GeneIDi949034
KEGGiecj:JW0075
eco:b0076
PATRICifig|1411691.4.peg.2205

Organism-specific databases

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

More...
EchoBASEi
EB0526

Phylogenomic databases

eggNOGiCOG0583, Bacteria
HOGENOMiCLU_039613_39_0_6
InParanoidiP10151
PhylomeDBiP10151

Enzyme and pathway databases

BioCyciEcoCyc:PD00519

Miscellaneous databases

Protein Ontology

More...
PROi
PR:P10151

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 nameiLEUO_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: P10151
Secondary accession number(s): P75640
<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 1, 1989
Last sequence update: November 1, 1997
Last modified: December 2, 2020
This is version 159 of the entry and version 3 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, Reference proteome

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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