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Entry version 136 (12 Aug 2020)
Sequence version 1 (01 Nov 1996)
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Protein

Putative xanthine dehydrogenase FAD-binding subunit XdhB

Gene

xdhB

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 predictedi <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

Presumed to be a dehydrogenase, but possibly an oxidase. Participates in limited purine salvage (requires aspartate) but does not support aerobic growth on purines as the sole carbon source (purine catabolism).

<p>This subsection of the <a href="http://www.uniprot.org/help/function%5Fsection">Function</a> section describes the catalytic activity of an enzyme, i.e. a chemical reaction that the enzyme catalyzes.<p><a href='/help/catalytic_activity' target='_top'>More...</a></p>Catalytic activityi

<p>This subsection of the 'Function' section provides information relevant to cofactors. A cofactor is any non-protein substance required for a protein to be catalytically active. Some cofactors are inorganic, such as the metal atoms zinc, iron, and copper in various oxidation states. Others, such as most vitamins, are organic.<p><a href='/help/cofactor' target='_top'>More...</a></p>Cofactori

FADBy similarity

<p>This subsection of the <a href="http://www.uniprot.org/help/function%5Fsection">'Function'</a> section describes the metabolic pathway(s) associated with a protein.<p><a href='/help/pathway' target='_top'>More...</a></p>Pathwayi: hypoxanthine degradation

This protein is involved in step 1 and 2 of the subpathway that synthesizes urate from hypoxanthine.
Proteins known to be involved in the 2 steps of the subpathway in this organism are:
  1. Putative xanthine dehydrogenase iron-sulfur-binding subunit XdhC (xdhC), Putative xanthine dehydrogenase molybdenum-binding subunit XdhA (xdhA), Putative xanthine dehydrogenase FAD-binding subunit XdhB (xdhB)
  2. Putative xanthine dehydrogenase molybdenum-binding subunit XdhA (xdhA), Putative xanthine dehydrogenase FAD-binding subunit XdhB (xdhB)
This subpathway is part of the pathway hypoxanthine degradation, which is itself part of Purine metabolism.
View all proteins of this organism that are known to be involved in the subpathway that synthesizes urate from hypoxanthine, the pathway hypoxanthine degradation and in Purine metabolism.

Sites

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the <a href="http://www.uniprot.org/help/function%5Fsection">Function</a> section describes the interaction between a single amino acid and another chemical entity. Priority is given to the annotation of physiological ligands.<p><a href='/help/binding' target='_top'>More...</a></p>Binding sitei165FAD; via amide nitrogen and carbonyl oxygenBy similarity1
Binding sitei184FADBy similarity1

Regions

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the <a href="http://www.uniprot.org/help/function%5Fsection">Function</a> section describes a region in the protein which binds nucleotide phosphates. It always involves more than one amino acid and includes all residues involved in nucleotide-binding.<p><a href='/help/np_bind' target='_top'>More...</a></p>Nucleotide bindingi27 – 34FADBy similarity8
Nucleotide bindingi109 – 113FADBy similarity5

<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

  • hypoxanthine oxidation Source: EcoliWiki
  • purine ribonucleoside salvage Source: UniProtKB-KW

<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 functionOxidoreductase
Biological processPurine metabolism, Purine salvage
LigandFAD, Flavoprotein, NAD

Enzyme and pathway databases

BioCyc Collection of Pathway/Genome Databases

More...
BioCyci
EcoCyc:G7486-MONOMER
ECOL316407:JW2835-MONOMER
MetaCyc:G7486-MONOMER

UniPathway: a resource for the exploration and annotation of metabolic pathways

More...
UniPathwayi
UPA00604;UER00661
UPA00604;UER00662

<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:
Putative xanthine dehydrogenase FAD-binding subunit XdhB (EC:1.17.1.4)
<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:xdhB
Synonyms:ygeT
Ordered Locus Names:b2867, JW2835
<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_00001660921 – 292Putative xanthine dehydrogenase FAD-binding subunit XdhBAdd BLAST292

Proteomic databases

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

More...
PaxDbi
Q46800

PRoteomics IDEntifications database

More...
PRIDEi
Q46800

<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

Heterotrimer of XdhA, XdhB and XdhC.

Curated

Protein-protein interaction databases

The Biological General Repository for Interaction Datasets (BioGRID)

More...
BioGRIDi
4262320, 136 interactors

ComplexPortal: manually curated resource of macromolecular complexes

More...
ComplexPortali
CPX-5122, XdhABC xanthine dehydrogenase complex

Protein interaction database and analysis system

More...
IntActi
Q46800, 5 interactors

STRING: functional protein association networks

More...
STRINGi
511145.b2867

<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

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SMRi
Q46800

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 – 176FAD-binding PCMH-typePROSITE-ProRule annotationAdd BLAST176

Phylogenomic databases

evolutionary genealogy of genes: Non-supervised Orthologous Groups

More...
eggNOGi
COG1319, Bacteria

The HOGENOM Database of Homologous Genes from Fully Sequenced Organisms

More...
HOGENOMi
CLU_058050_0_1_6

InParanoid: Eukaryotic Ortholog Groups

More...
InParanoidi
Q46800

KEGG Orthology (KO)

More...
KOi
K13479

Database for complete collections of gene phylogenies

More...
PhylomeDBi
Q46800

Family and domain databases

Gene3D Structural and Functional Annotation of Protein Families

More...
Gene3Di
3.30.465.10, 1 hit

Integrated resource of protein families, domains and functional sites

More...
InterProi
View protein in InterPro
IPR005107, CO_DH_flav_C
IPR036683, CO_DH_flav_C_dom_sf
IPR016166, FAD-bd_PCMH
IPR036318, FAD-bd_PCMH-like_sf
IPR016169, FAD-bd_PCMH_sub2
IPR002346, Mopterin_DH_FAD-bd

Pfam protein domain database

More...
Pfami
View protein in Pfam
PF03450, CO_deh_flav_C, 1 hit
PF00941, FAD_binding_5, 1 hit

Simple Modular Architecture Research Tool; a protein domain database

More...
SMARTi
View protein in SMART
SM01092, CO_deh_flav_C, 1 hit

Superfamily database of structural and functional annotation

More...
SUPFAMi
SSF55447, SSF55447, 1 hit
SSF56176, SSF56176, 1 hit

PROSITE; a protein domain and family database

More...
PROSITEi
View protein in PROSITE
PS51387, FAD_PCMH, 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.

Q46800-1 [UniParc]FASTAAdd to basket
« Hide
        10         20         30         40         50
MFDFASYHRA ATLADAINLL ADNPQAKLLA GGTDVLIQLH HHNDRYRHIV
60 70 80 90 100
DIHNLAELRG ITLAEDGSLR IGSATTFTQL IEDPITQRHL PALCAAATSI
110 120 130 140 150
AGPQIRNVAT YGGNICNGAT SADSATPTLI YDAKLEIHSP RGVRFVPING
160 170 180 190 200
FHTGPGKVSL EHDEILVAFH FPPQPKEHAG SAHFKYAMRD AMDISTIGCA
210 220 230 240 250
AHCRLDNGNF SELRLAFGVA APTPIRCQHA EQTAQNAPLN LQTLEAISES
260 270 280 290
VLQDVAPRSS WRASKEFRLH LIQTMTKKVI SEAVAAAGGK LQ
Length:292
Mass (Da):31,557
Last modified:November 1, 1996 - 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:i74A07D137DA857E8
GO

Sequence databases

Select the link destinations:

EMBL nucleotide sequence database

More...
EMBLi

GenBank nucleotide sequence database

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GenBanki

DNA Data Bank of Japan; a nucleotide sequence database

More...
DDBJi
Links Updated
U28375 Genomic DNA Translation: AAA83048.1
U00096 Genomic DNA Translation: AAC75905.1
AP009048 Genomic DNA Translation: BAE76933.1

Protein sequence database of the Protein Information Resource

More...
PIRi
C65070

NCBI Reference Sequences

More...
RefSeqi
NP_417343.1, NC_000913.3
WP_000459182.1, NZ_LN832404.1

Genome annotation databases

Ensembl bacterial and archaeal genome annotation project

More...
EnsemblBacteriai
AAC75905; AAC75905; b2867
BAE76933; BAE76933; BAE76933

Database of genes from NCBI RefSeq genomes

More...
GeneIDi
947205

KEGG: Kyoto Encyclopedia of Genes and Genomes

More...
KEGGi
ecj:JW2835
eco:b2867

Pathosystems Resource Integration Center (PATRIC)

More...
PATRICi
fig|1411691.4.peg.3867

<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
U28375 Genomic DNA Translation: AAA83048.1
U00096 Genomic DNA Translation: AAC75905.1
AP009048 Genomic DNA Translation: BAE76933.1
PIRiC65070
RefSeqiNP_417343.1, NC_000913.3
WP_000459182.1, NZ_LN832404.1

3D structure databases

SMRiQ46800
ModBaseiSearch...

Protein-protein interaction databases

BioGRIDi4262320, 136 interactors
ComplexPortaliCPX-5122, XdhABC xanthine dehydrogenase complex
IntActiQ46800, 5 interactors
STRINGi511145.b2867

Proteomic databases

PaxDbiQ46800
PRIDEiQ46800

Genome annotation databases

EnsemblBacteriaiAAC75905; AAC75905; b2867
BAE76933; BAE76933; BAE76933
GeneIDi947205
KEGGiecj:JW2835
eco:b2867
PATRICifig|1411691.4.peg.3867

Organism-specific databases

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

More...
EchoBASEi
EB2862

Phylogenomic databases

eggNOGiCOG1319, Bacteria
HOGENOMiCLU_058050_0_1_6
InParanoidiQ46800
KOiK13479
PhylomeDBiQ46800

Enzyme and pathway databases

UniPathwayiUPA00604;UER00661
UPA00604;UER00662
BioCyciEcoCyc:G7486-MONOMER
ECOL316407:JW2835-MONOMER
MetaCyc:G7486-MONOMER

Miscellaneous databases

Protein Ontology

More...
PROi
PR:Q46800

Family and domain databases

Gene3Di3.30.465.10, 1 hit
InterProiView protein in InterPro
IPR005107, CO_DH_flav_C
IPR036683, CO_DH_flav_C_dom_sf
IPR016166, FAD-bd_PCMH
IPR036318, FAD-bd_PCMH-like_sf
IPR016169, FAD-bd_PCMH_sub2
IPR002346, Mopterin_DH_FAD-bd
PfamiView protein in Pfam
PF03450, CO_deh_flav_C, 1 hit
PF00941, FAD_binding_5, 1 hit
SMARTiView protein in SMART
SM01092, CO_deh_flav_C, 1 hit
SUPFAMiSSF55447, SSF55447, 1 hit
SSF56176, SSF56176, 1 hit
PROSITEiView protein in PROSITE
PS51387, FAD_PCMH, 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 nameiXDHB_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: Q46800
Secondary accession number(s): Q2M9X3
<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: November 1, 1997
Last sequence update: November 1, 1996
Last modified: August 12, 2020
This is version 136 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. PATHWAY comments
    Index of metabolic and biosynthesis pathways
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