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Entry version 158 (11 Dec 2019)
Sequence version 3 (01 Nov 1997)
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Protein

Quinolinate synthase A

Gene

nadA

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

Catalyzes the condensation of iminoaspartate with dihydroxyacetone phosphate to form quinolinate.3 Publications

<p>This subsection of the <a href="http://www.uniprot.org/help/function_section">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

[4Fe-4S] cluster2 PublicationsNote: Binds 1 [4Fe-4S] cluster per subunit.2 Publications

<p>This subsection of the <a href="http://www.uniprot.org/help/function_section">Function</a> section describes regulatory mechanisms for enzymes, transporters or microbial transcription factors, and reports the components which regulate (by activation or inhibition) the reaction.<p><a href='/help/activity_regulation' target='_top'>More...</a></p>Activity regulationi

Activity is greater under oxic conditions and is regulated by a redox-active disulfide bond.

<p>This subsection of the <a href="http://www.uniprot.org/help/function_section">'Function'</a> section describes the metabolic pathway(s) associated with a protein.<p><a href='/help/pathway' target='_top'>More...</a></p>Pathwayi: NAD(+) biosynthesis

This protein is involved in step 1 of the subpathway that synthesizes quinolinate from iminoaspartate.
Proteins known to be involved in this subpathway in this organism are:
  1. Quinolinate synthase A (nadA), Quinolinate synthase A (nadA), Quinolinate synthase A (nadA), Quinolinate synthase A (nadA), Quinolinate synthase A (nadA)
This subpathway is part of the pathway NAD(+) biosynthesis, which is itself part of Cofactor biosynthesis.
View all proteins of this organism that are known to be involved in the subpathway that synthesizes quinolinate from iminoaspartate, the pathway NAD(+) biosynthesis and in Cofactor biosynthesis.

Sites

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the <a href="http://www.uniprot.org/help/function_section">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 sitei47IminoaspartateBy similarity1
Binding sitei68Iminoaspartate; via amide nitrogenBy similarity1
Binding sitei139IminoaspartateBy similarity1
Binding sitei156IminoaspartateBy similarity1
Binding sitei226IminoaspartateBy similarity1
Binding sitei243IminoaspartateBy similarity1

<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

<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 functionTransferase
Biological processPyridine nucleotide biosynthesis
Ligand4Fe-4S, Iron, Iron-sulfur, Metal-binding

Enzyme and pathway databases

BioCyc Collection of Pathway/Genome Databases

More...
BioCyci
EcoCyc:QUINOLINATE-SYNTHA-MONOMER
ECOL316407:JW0733-MONOMER
MetaCyc:QUINOLINATE-SYNTHA-MONOMER

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

More...
UniPathwayi
UPA00253;UER00327

<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_and_taxonomy_section">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:
Quinolinate synthase A (EC:2.5.1.72)
<p>This subsection of the <a href="http://www.uniprot.org/help/names_and_taxonomy_section">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:nadA
Synonyms:nicA
Ordered Locus Names:b0750, JW0733
<p>This subsection of the <a href="http://www.uniprot.org/help/names_and_taxonomy_section">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_and_taxonomy_section">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_and_taxonomy_section">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_and_taxonomy_section">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_manual">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

Keywords - Cellular componenti

Cytoplasm

<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

Mutagenesis

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the <a href="http://www.uniprot.org/manual/pathology_and_biotech_section">'Pathology and Biotech'</a> section describes the effect of the experimental mutation of one or more amino acid(s) on the biological properties of the protein.<p><a href='/help/mutagen' target='_top'>More...</a></p>Mutagenesisi291C → S: Activity is 3.3-fold lower under oxic conditions than under anoxic conditions. 1 Publication1
Mutagenesisi294C → S: Activity is 13-fold lower under oxic conditions than under anoxic conditions. 1 Publication1

<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.<p><a href='/help/chain' target='_top'>More...</a></p>ChainiPRO_00001557601 – 347Quinolinate synthase AAdd BLAST347

Amino acid modifications

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the PTM / Processing":/help/ptm_processing_section section describes the positions of cysteine residues participating in disulfide bonds.<p><a href='/help/disulfid' target='_top'>More...</a></p>Disulfide bondi291 ↔ 294Redox-active

Keywords - PTMi

Disulfide bond

Proteomic databases

jPOST - Japan Proteome Standard Repository/Database

More...
jPOSTi
P11458

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

More...
PaxDbi
P11458

PRoteomics IDEntifications database

More...
PRIDEi
P11458

<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_section">'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_section">'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
4263028, 14 interactors
849727, 2 interactors

Database of interacting proteins

More...
DIPi
DIP-1027N

Protein interaction database and analysis system

More...
IntActi
P11458, 6 interactors

STRING: functional protein association networks

More...
STRINGi
511145.b0750

<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
P11458

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

<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

Keywords - Domaini

Redox-active center

Phylogenomic databases

evolutionary genealogy of genes: Non-supervised Orthologous Groups

More...
eggNOGi
ENOG4105D0I Bacteria
COG0379 LUCA

The HOGENOM Database of Homologous Genes from Fully Sequenced Organisms

More...
HOGENOMi
HOG000222769

InParanoid: Eukaryotic Ortholog Groups

More...
InParanoidi
P11458

KEGG Orthology (KO)

More...
KOi
K03517

Database for complete collections of gene phylogenies

More...
PhylomeDBi
P11458

Family and domain databases

Gene3D Structural and Functional Annotation of Protein Families

More...
Gene3Di
3.40.50.10800, 3 hits

HAMAP database of protein families

More...
HAMAPi
MF_00567 NadA_type1, 1 hit

Integrated resource of protein families, domains and functional sites

More...
InterProi
View protein in InterPro
IPR003473 NadA
IPR036094 NadA_sf
IPR023513 Quinolinate_synth_A_type1

The PANTHER Classification System

More...
PANTHERi
PTHR30573 PTHR30573, 1 hit

Pfam protein domain database

More...
Pfami
View protein in Pfam
PF02445 NadA, 1 hit

Superfamily database of structural and functional annotation

More...
SUPFAMi
SSF142754 SSF142754, 1 hit

TIGRFAMs; a protein family database

More...
TIGRFAMsi
TIGR00550 nadA, 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_length">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_section">Sequence</a> section indicates if the <a href="http://www.uniprot.org/help/canonical_and_isoforms">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.

P11458-1 [UniParc]FASTAAdd to basket
« Hide
        10         20         30         40         50
MSVMFDPDTA IYPFPPKPTP LSIDEKAYYR EKIKRLLKER NAVMVAHYYT
60 70 80 90 100
DPEIQQLAEE TGGCISDSLE MARFGAKHPA STLLVAGVRF MGETAKILSP
110 120 130 140 150
EKTILMPTLQ AECSLDLGCP VEEFNAFCDA HPDRTVVVYA NTSAAVKARA
160 170 180 190 200
DWVVTSSIAV ELIDHLDSLG EKIIWAPDKH LGRYVQKQTG GDILCWQGAC
210 220 230 240 250
IVHDEFKTQA LTRLQEEYPD AAILVHPESP QAIVDMADAV GSTSQLIAAA
260 270 280 290 300
KTLPHQRLIV ATDRGIFYKM QQAVPDKELL EAPTAGEGAT CRSCAHCPWM
310 320 330 340
AMNGLQAIAE ALEQEGSNHE VHVDERLRER ALVPLNRMLD FAATLRG
Length:347
Mass (Da):38,241
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:i17014F7621E5EC6B
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 CAA31216 differs from that shown. Reason: Frameshift.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 conflicti35 – 36RL → LR in CAA31216 (PubMed:2841129).Curated2
Sequence conflicti153V → G in CAA31216 (PubMed:2841129).Curated1
Sequence conflicti170G → C in CAA31216 (PubMed:2841129).Curated1
Sequence conflicti329E → R in CAA31216 (PubMed:2841129).Curated1

<p>This subsection of the ‘Sequence’ section reports information derived from mass spectrometry experiments done on the entire protein or on biologically active derived peptide(s).<p><a href='/help/mass_spectrometry' target='_top'>More...</a></p>Mass spectrometryi

Molecular mass is 38246 Da. Determined by MALDI. 1 Publication

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
X12713 Genomic DNA Translation: CAA31216.1 Frameshift.
U00096 Genomic DNA Translation: AAC73837.1
AP009048 Genomic DNA Translation: BAA35409.1

Protein sequence database of the Protein Information Resource

More...
PIRi
F64810 SYECQA

NCBI Reference Sequences

More...
RefSeqi
NP_415271.1, NC_000913.3
WP_000115290.1, NZ_SSZK01000002.1

Genome annotation databases

Ensembl bacterial and archaeal genome annotation project

More...
EnsemblBacteriai
AAC73837; AAC73837; b0750
BAA35409; BAA35409; BAA35409

Database of genes from NCBI RefSeq genomes

More...
GeneIDi
945351

KEGG: Kyoto Encyclopedia of Genes and Genomes

More...
KEGGi
ecj:JW0733
eco:b0750

Pathosystems Resource Integration Center (PATRIC)

More...
PATRICi
fig|1411691.4.peg.1529

<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
X12713 Genomic DNA Translation: CAA31216.1 Frameshift.
U00096 Genomic DNA Translation: AAC73837.1
AP009048 Genomic DNA Translation: BAA35409.1
PIRiF64810 SYECQA
RefSeqiNP_415271.1, NC_000913.3
WP_000115290.1, NZ_SSZK01000002.1

3D structure databases

SMRiP11458
ModBaseiSearch...

Protein-protein interaction databases

BioGridi4263028, 14 interactors
849727, 2 interactors
DIPiDIP-1027N
IntActiP11458, 6 interactors
STRINGi511145.b0750

Proteomic databases

jPOSTiP11458
PaxDbiP11458
PRIDEiP11458

Genome annotation databases

EnsemblBacteriaiAAC73837; AAC73837; b0750
BAA35409; BAA35409; BAA35409
GeneIDi945351
KEGGiecj:JW0733
eco:b0750
PATRICifig|1411691.4.peg.1529

Organism-specific databases

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

More...
EchoBASEi
EB0624

Phylogenomic databases

eggNOGiENOG4105D0I Bacteria
COG0379 LUCA
HOGENOMiHOG000222769
InParanoidiP11458
KOiK03517
PhylomeDBiP11458

Enzyme and pathway databases

UniPathwayiUPA00253;UER00327
BioCyciEcoCyc:QUINOLINATE-SYNTHA-MONOMER
ECOL316407:JW0733-MONOMER
MetaCyc:QUINOLINATE-SYNTHA-MONOMER

Miscellaneous databases

Protein Ontology

More...
PROi
PR:P11458

Family and domain databases

Gene3Di3.40.50.10800, 3 hits
HAMAPiMF_00567 NadA_type1, 1 hit
InterProiView protein in InterPro
IPR003473 NadA
IPR036094 NadA_sf
IPR023513 Quinolinate_synth_A_type1
PANTHERiPTHR30573 PTHR30573, 1 hit
PfamiView protein in Pfam
PF02445 NadA, 1 hit
SUPFAMiSSF142754 SSF142754, 1 hit
TIGRFAMsiTIGR00550 nadA, 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 nameiNADA_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: P11458
Secondary accession number(s): P77373
<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_and_isoforms">canonical sequence</a> are also displayed.<p><a href='/help/entry_history' target='_top'>More...</a></p>Entry historyiIntegrated into UniProtKB/Swiss-Prot: October 1, 1989
Last sequence update: November 1, 1997
Last modified: December 11, 2019
This is version 158 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

Direct protein sequencing, Reference proteome

Documents

  1. PATHWAY comments
    Index of metabolic and biosynthesis pathways
  2. SIMILARITY comments
    Index of protein domains and families
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