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Entry version 131 (07 Apr 2021)
Sequence version 1 (21 Jul 1986)
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Protein

DNA-binding protein HU-alpha

Gene

hupA

Organism
Escherichia coli (strain K12)
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

Histone-like DNA-binding protein which is capable of wrapping DNA to stabilize it, and thus to prevent its denaturation under extreme environmental conditions.

<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

  • DNA binding Source: EcoliWiki
  • identical protein binding Source: IntAct

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
Biological processDNA condensation

Enzyme and pathway databases

BioCyc Collection of Pathway/Genome Databases

More...
BioCyci
EcoCyc:EG10466-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:
DNA-binding protein HU-alpha
Alternative name(s):
HU-2
NS2
<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:hupA
Ordered Locus Names:b4000, JW3964
<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

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_00001049351 – 90DNA-binding protein HU-alphaAdd BLAST90

Proteomic databases

jPOST - Japan Proteome Standard Repository/Database

More...
jPOSTi
P0ACF0

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

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PaxDbi
P0ACF0

PRoteomics IDEntifications database

More...
PRIDEi
P0ACF0

<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

Heterodimer of an alpha and a beta chain.

1 Publication

<p>This subsection of the '<a href="http://www.uniprot.org/help/interaction%5Fsection">Interaction</a>' section provides information about binary protein-protein interactions. The data presented in this section are a quality-filtered subset of binary interactions automatically derived from the <a href="https://www.ebi.ac.uk/intact/">IntAct database</a>. It is updated at every <a href="http://www.uniprot.org/help/synchronization">UniProt release</a>.<p><a href='/help/binary_interactions' target='_top'>More...</a></p>Binary interactionsi

Hide details

GO - Molecular functioni

Protein-protein interaction databases

The Biological General Repository for Interaction Datasets (BioGRID)

More...
BioGRIDi
4263459, 132 interactors

ComplexPortal: manually curated resource of macromolecular complexes

More...
ComplexPortali
CPX-1958, HU complex, variant hupAB
CPX-1959, HU complex, variant hupA
CPX-1961, DnaA-HU complex, variant hupAB
CPX-1962, DnaA-HU complex, variant hupA

Database of interacting proteins

More...
DIPi
DIP-35892N

Protein interaction database and analysis system

More...
IntActi
P0ACF0, 77 interactors

STRING: functional protein association networks

More...
STRINGi
511145.b4000

<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

190
Legend: HelixTurnBeta strandPDB Structure known for this area
Show more details

3D structure databases

Small Angle Scattering Biological Data Bank

More...
SASBDBi
P0ACF0

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

More...
SMRi
P0ACF0

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
P0ACF0

<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

<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
COG0776, Bacteria

The HOGENOM Database of Homologous Genes from Fully Sequenced Organisms

More...
HOGENOMi
CLU_105066_3_1_6

InParanoid: Eukaryotic Ortholog Groups

More...
InParanoidi
P0ACF0

Database for complete collections of gene phylogenies

More...
PhylomeDBi
P0ACF0

Family and domain databases

Gene3D Structural and Functional Annotation of Protein Families

More...
Gene3Di
4.10.520.10, 1 hit

Integrated resource of protein families, domains and functional sites

More...
InterProi
View protein in InterPro
IPR000119, Hist_DNA-bd
IPR020816, Histone-like_DNA-bd_CS
IPR010992, IHF-like_DNA-bd_dom_sf

The PANTHER Classification System

More...
PANTHERi
PTHR33175, PTHR33175, 1 hit

Pfam protein domain database

More...
Pfami
View protein in Pfam
PF00216, Bac_DNA_binding, 1 hit

Protein Motif fingerprint database; a protein domain database

More...
PRINTSi
PR01727, DNABINDINGHU

Simple Modular Architecture Research Tool; a protein domain database

More...
SMARTi
View protein in SMART
SM00411, BHL, 1 hit

Superfamily database of structural and functional annotation

More...
SUPFAMi
SSF47729, SSF47729, 1 hit

PROSITE; a protein domain and family database

More...
PROSITEi
View protein in PROSITE
PS00045, HISTONE_LIKE, 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.

P0ACF0-1 [UniParc]FASTAAdd to basket
« Hide
        10         20         30         40         50
MNKTQLIDVI AEKAELSKTQ AKAALESTLA AITESLKEGD AVQLVGFGTF
60 70 80 90
KVNHRAERTG RNPQTGKEIK IAAANVPAFV SGKALKDAVK
Length:90
Mass (Da):9,535
Last modified:July 21, 1986 - 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:i6B5B8536FDBD13DC
GO

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 conflicti19 – 32TQAKA…TLAAI → AAAGRALDAIIASV AA sequence (PubMed:350619).CuratedAdd BLAST14

Sequence databases

Select the link destinations:

EMBL nucleotide sequence database

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EMBLi

GenBank nucleotide sequence database

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GenBanki

DNA Data Bank of Japan; a nucleotide sequence database

More...
DDBJi
Links Updated
X05994 Genomic DNA Translation: CAA29412.1
U00006 Genomic DNA Translation: AAC43098.1
U00096 Genomic DNA Translation: AAC76974.1
AP009048 Genomic DNA Translation: BAE77319.1
X54555 Genomic DNA Translation: CAA38426.1
D12624 Genomic DNA Translation: BAA02149.1

Protein sequence database of the Protein Information Resource

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PIRi
S06269, DNECS2

NCBI Reference Sequences

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RefSeqi
NP_418428.1, NC_000913.3
WP_001044513.1, NZ_STEB01000045.1

Genome annotation databases

Ensembl bacterial and archaeal genome annotation project

More...
EnsemblBacteriai
AAC76974; AAC76974; b4000
BAE77319; BAE77319; BAE77319

Database of genes from NCBI RefSeq genomes

More...
GeneIDi
58463408
948499

KEGG: Kyoto Encyclopedia of Genes and Genomes

More...
KEGGi
ecj:JW3964
eco:b4000

Pathosystems Resource Integration Center (PATRIC)

More...
PATRICi
fig|1411691.4.peg.2711

<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
X05994 Genomic DNA Translation: CAA29412.1
U00006 Genomic DNA Translation: AAC43098.1
U00096 Genomic DNA Translation: AAC76974.1
AP009048 Genomic DNA Translation: BAE77319.1
X54555 Genomic DNA Translation: CAA38426.1
D12624 Genomic DNA Translation: BAA02149.1
PIRiS06269, DNECS2
RefSeqiNP_418428.1, NC_000913.3
WP_001044513.1, NZ_STEB01000045.1

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
1MULX-ray2.30A1-90[»]
2O97X-ray2.45A1-90[»]
4YEWX-ray2.68C1-90[»]
4YEXX-ray3.20A/C1-90[»]
4YEYX-ray3.35A/C1-90[»]
4YF0X-ray2.79A/B1-90[»]
4YFHX-ray3.49A/B1-90[»]
4YFTX-ray2.91C1-90[»]
6O6KX-ray3.60A/B1-90[»]
6O8QX-ray3.22A/B/C/D/E/F/G/H/I/J1-90[»]
6OAJX-ray4.09A/B/C/D1-90[»]
SASBDBiP0ACF0
SMRiP0ACF0
ModBaseiSearch...
PDBe-KBiSearch...

Protein-protein interaction databases

BioGRIDi4263459, 132 interactors
ComplexPortaliCPX-1958, HU complex, variant hupAB
CPX-1959, HU complex, variant hupA
CPX-1961, DnaA-HU complex, variant hupAB
CPX-1962, DnaA-HU complex, variant hupA
DIPiDIP-35892N
IntActiP0ACF0, 77 interactors
STRINGi511145.b4000

Proteomic databases

jPOSTiP0ACF0
PaxDbiP0ACF0
PRIDEiP0ACF0

Genome annotation databases

EnsemblBacteriaiAAC76974; AAC76974; b4000
BAE77319; BAE77319; BAE77319
GeneIDi58463408
948499
KEGGiecj:JW3964
eco:b4000
PATRICifig|1411691.4.peg.2711

Organism-specific databases

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

More...
EchoBASEi
EB0461

Phylogenomic databases

eggNOGiCOG0776, Bacteria
HOGENOMiCLU_105066_3_1_6
InParanoidiP0ACF0
PhylomeDBiP0ACF0

Enzyme and pathway databases

BioCyciEcoCyc:EG10466-MONOMER

Miscellaneous databases

EvolutionaryTraceiP0ACF0

Protein Ontology

More...
PROi
PR:P0ACF0

Family and domain databases

Gene3Di4.10.520.10, 1 hit
InterProiView protein in InterPro
IPR000119, Hist_DNA-bd
IPR020816, Histone-like_DNA-bd_CS
IPR010992, IHF-like_DNA-bd_dom_sf
PANTHERiPTHR33175, PTHR33175, 1 hit
PfamiView protein in Pfam
PF00216, Bac_DNA_binding, 1 hit
PRINTSiPR01727, DNABINDINGHU
SMARTiView protein in SMART
SM00411, BHL, 1 hit
SUPFAMiSSF47729, SSF47729, 1 hit
PROSITEiView protein in PROSITE
PS00045, HISTONE_LIKE, 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 nameiDBHA_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: P0ACF0
Secondary accession number(s): P02342, Q2M8T7
<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 21, 1986
Last sequence update: July 21, 1986
Last modified: April 7, 2021
This is version 131 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, 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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