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UniProtKB - F6REQ2 (F6REQ2_HORSE)

Entry version 66 (12 Aug 2020)
Sequence version 2 (10 Apr 2019)
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Protein

Nitric oxide synthase

Gene

NOS3

Organism
Equus caballus (Horse)
Status
Unreviewed-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>-Protein inferred from homologyi <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

Produces nitric oxide (NO).UniRule annotation

<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

Protein has several cofactor binding sites:

Sites

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the <a href="http://www.uniprot.org/help/function%5Fsection">Function</a> section indicates at which position the protein binds a given metal ion. The nature of the metal is indicated in the 'Description' field.<p><a href='/help/metal' target='_top'>More...</a></p>Metal bindingi185Iron (heme axial ligand)UniRule annotation1

<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

Complete GO annotation on QuickGO ...

GO - Biological processi

Complete GO annotation on QuickGO ...

<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 functionCalmodulin-bindingUniRule annotationARBA annotation, OxidoreductaseUniRule annotationARBA annotation
LigandFADUniRule annotationARBA annotation, Flavoprotein, FMNUniRule annotationARBA annotation, HemeUniRule annotationARBA annotation, Iron, Metal-binding, NADPUniRule annotationARBA annotation

<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:
Nitric oxide synthaseUniRule annotation (EC:1.14.13.39UniRule annotation)
<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:NOS3Imported
<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>OrganismiEquus caballus (Horse)Imported
<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 identifieri9796 [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 lineageiEukaryota › Metazoa › Chordata › Craniata › Vertebrata › Euteleostomi › Mammalia › Eutheria › Laurasiatheria › Perissodactyla › Equidae › Equus ›
<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
  • UP000002281 <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 4

Organism-specific databases

Vertebrate Gene Nomenclature Database

More...VGNCi		VGNC:20815, NOS3

<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

Extracellular region or secreted Cytosol Plasma membrane Cytoskeleton Lysosome Endosome Peroxisome ER Golgi apparatus Nucleus Mitochondrion Manual annotation Automatic computational assertionGraphics by Christian Stolte & Seán O’Donoghue; Source: COMPARTMENTS

<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

Proteomic databases

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

More...PaxDbi		F6REQ2

<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

Gene expression databases

Bgee dataBase for Gene Expression Evolution

More...Bgeei		ENSECAG00000024562, Expressed in synovial membrane of synovial joint and 20 other tissues

ExpressionAtlas, Differential and Baseline Expression

More...ExpressionAtlasi		F6REQ2, baseline

<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

GO - Molecular functioni

Complete GO annotation on QuickGO ...

<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>Domaini521 – 704Flavodoxin-likeInterPro annotationAdd BLAST184
Domaini757 – 1003FAD-binding FR-typeInterPro annotationAdd BLAST247

Region

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the 'Family and Domains' section describes a region of interest that cannot be described in other subsections.<p><a href='/help/region' target='_top'>More...</a></p>Regioni1 – 72DisorderedSequence analysisAdd BLAST72
Regioni820 – 849DisorderedSequence analysisAdd BLAST30

Compositional bias

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the 'Family and Domains' section describes the position of regions of compositional bias within the protein and the particular amino acids that are over-represented within those regions.<p><a href='/help/compbias' target='_top'>More...</a></p>Compositional biasi37 – 66Pro-richSequence analysisAdd BLAST30

<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

Belongs to the NOS family.UniRule annotationARBA annotation

Phylogenomic databases

Ensembl GeneTree

More...GeneTreei		ENSGT00940000161389

InParanoid: Eukaryotic Ortholog Groups

More...InParanoidi		F6REQ2

TreeFam database of animal gene trees

More...TreeFami		TF324410

Family and domain databases

Gene3D Structural and Functional Annotation of Protein Families

More...Gene3Di		1.20.990.10, 1 hit
3.40.50.360, 1 hit
3.40.50.80, 1 hit

Integrated resource of protein families, domains and functional sites

More...InterProi		View protein in InterPro
IPR003097, CysJ-like_FAD-binding
IPR017927, FAD-bd_FR_type
IPR001094, Flavdoxin-like
IPR008254, Flavodoxin/NO_synth
IPR001709, Flavoprot_Pyr_Nucl_cyt_Rdtase
IPR029039, Flavoprotein-like_sf
IPR039261, FNR_nucleotide-bd
IPR023173, NADPH_Cyt_P450_Rdtase_alpha
IPR012144, NOS_euk
IPR004030, NOS_N
IPR036119, NOS_N_sf
IPR001433, OxRdtase_FAD/NAD-bd
IPR017938, Riboflavin_synthase-like_b-brl

Pfam protein domain database

More...Pfami		View protein in Pfam
PF00667, FAD_binding_1, 1 hit
PF00258, Flavodoxin_1, 1 hit
PF00175, NAD_binding_1, 1 hit
PF02898, NO_synthase, 1 hit

PIRSF; a whole-protein classification database

More...PIRSFi		PIRSF000333, NOS, 1 hit

Protein Motif fingerprint database; a protein domain database

More...PRINTSi		PR00369, FLAVODOXIN
PR00371, FPNCR

Superfamily database of structural and functional annotation

More...SUPFAMi		SSF52218, SSF52218, 1 hit
SSF52343, SSF52343, 1 hit
SSF56512, SSF56512, 1 hit
SSF63380, SSF63380, 1 hit

PROSITE; a protein domain and family database

More...PROSITEi		View protein in PROSITE
PS51384, FAD_FR, 1 hit
PS50902, FLAVODOXIN_LIKE, 1 hit
PS60001, NOS, 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>Sequence (1+)i

<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.

This entry has 1 described isoform and 1 potential isoform that is computationally mapped.Show allAlign All

F6REQ2-1 [UniParc]FASTAAdd to basket
« Hide
        10         20         30         40         50
MGNLKSVGQE PGPPCGLGLG LGLGLCGKQG PASPASEPSR APVPAPAPAP 
        60         70         80         90        100
LPAPDHSPPL ARPPEGPKFP RVKNWEVGSI TYDTLCAQSQ QDGPCTPRRC 
       110        120        130        140        150
LGSLVFPRKL QSRPSQGPPP PEQLLSQARD FINQYYSSIK RSGSQAHEQR 
       160        170        180        190        200
LQEVEAEVAA TGTYQLRESE LVFGAKQAWR NAPRCVGRIQ WGKLQVFDAR 
       210        220        230        240        250
DCSSAQEMFT CICNHIKYAT NRGNLRSAIT VFPQRTPGRG DFRIWNSQLV 
       260        270        280        290        300
RYAGYRQQDG SVRGDPANVE ITELCVQHGW TPGNGRFDVL PLLLQAPDEP 
       310        320        330        340        350
PELFTLPPEL VLEVPLEHPT LEWFASLGLR WYALPAVSNM LLEIGGLEFP 
       360        370        380        390        400
AAPFSGWYMS TEIGTRNLCD PHRYNILEDV AVCMDLDTRT TSSLWKDKAA 
       410        420        430        440        450
VEINLAVLHS YQLAKVTIVD HHAATASFMK HLENEQKARG GCPADWAWIV 
       460        470        480        490        500
PPISGSLTPV FHQEMVNYVL SPAFRYQPDP WKGSAVKGTG LARKKTFKEV 
       510        520        530        540        550
ANAVKISASL MGTVMAKRVK ATILYGSETG RAQGYAQQLG RLFRKAFDPR 
       560        570        580        590        600
VLCMDEYDVV SLEHETLVLV VTSTFGNGDP PENGESFAAA LMEMSGPYNS 
       610        620        630        640        650
SPRPEQHKSY KIRFNSVSCS DPLVSSWRRK RKESSNTDSA GALGTLRFCV 
       660        670        680        690        700
FGLGSRAYPH FCAFARAVDT RLEELGGERL LQLGQGDELC GQEEAFRGWA 
       710        720        730        740        750
QAAFQASCET FCVGEDAKAA ARDIFSPKRS WKRQRYRLST QAEGLQLLPG 
       760        770        780        790        800
LIHVHRRKMF QATVLSVENL QSSKSTRATI LVRLDTGGQE GLQYQPGDHI 
       810        820        830        840        850
GVCPPNRPGL VEALLSRVED PPPAGEPVAV EQLEKGSPGG PPPSWVRDPR 
       860        870        880        890        900
LPPCTLRQAL TFFLDITSPP SPQLLRLLST LAEEPSEQQE LETLSQDPRR 
       910        920        930        940        950
YEEWKWFRCP TLLEVLEQFP SVALPAALLL TQLPLLQPRY YSVSSAPSTH 
       960        970        980        990       1000
PGEIHLTVAV LAYRTQDGLG PLHYGVCSTW LSQLKAGDLV PCFIRGAPSF 
      1010       1020       1030       1040       1050
RLPPDPSLPC ILVGPGTGIA PFRGFWQERL HDIESKGLQP APMTLVFGCR 
      1060       1070       1080       1090       1100
CSQLDHLYRD EVQDAQQRGV FGRVLTAFSR EPDSPKTYVQ DILRTELAAE 
      1110       1120       1130       1140       1150
VHRVLCLDRG HMFVCGDVTM ATSVLQTVQR ILATEGDMEL DEAGDVIGVL 
      1160       1170       1180       1190       1200
RVRRSRSRGE AGPCRGRGPL RYRSPYCGSD PLRSFSAGSA TLSRGHFRAH 
      1210       1220       1230       1240       1250
AAHPGGDKPH THPEPFLARA ASAGHSALGV RPARPRHLWS LRVLLLSTPV 
      1260 
PGEGLSVHPG SAAPLSA
Length:1,267
Mass (Da):139,071
Last modified:April 10, 2019 - v2
<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:i6216BFFBF64CA71F
GO

<p>In eukaryotic reference proteomes, unreviewed entries that are likely to belong to the same gene are computationally mapped, based on gene identifiers from Ensembl, EnsemblGenomes and model organism databases.<p><a href='/help/gene_centric_isoform_mapping' target='_top'>More...</a></p>Computationally mapped potential isoform sequencesi

There is 1 potential isoform mapped to this entry.BLASTAlignShow allAdd to basket
EntryEntry nameProtein names
Gene namesLengthAnnotation
F6REP3F6REP3_HORSE
Nitric oxide synthase
NOS3
1,204Annotation 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>

Genome annotation databases

Ensembl eukaryotic genome annotation project

More...Ensembli		ENSECAT00000026728; ENSECAP00000022325; ENSECAG00000024562

<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

3D structure databases

Database of comparative protein structure models

More...ModBasei		Search...

SWISS-MODEL Interactive Workspace

More...SWISS-MODEL-Workspacei		Submit a new modelling project...

Proteomic databases

PaxDbiF6REQ2

Genome annotation databases

EnsembliENSECAT00000026728; ENSECAP00000022325; ENSECAG00000024562

Organism-specific databases

VGNCiVGNC:20815, NOS3

Phylogenomic databases

GeneTreeiENSGT00940000161389
InParanoidiF6REQ2
TreeFamiTF324410

Gene expression databases

BgeeiENSECAG00000024562, Expressed in synovial membrane of synovial joint and 20 other tissues
ExpressionAtlasiF6REQ2, baseline

Family and domain databases

Gene3Di1.20.990.10, 1 hit
3.40.50.360, 1 hit
3.40.50.80, 1 hit
InterProiView protein in InterPro
IPR003097, CysJ-like_FAD-binding
IPR017927, FAD-bd_FR_type
IPR001094, Flavdoxin-like
IPR008254, Flavodoxin/NO_synth
IPR001709, Flavoprot_Pyr_Nucl_cyt_Rdtase
IPR029039, Flavoprotein-like_sf
IPR039261, FNR_nucleotide-bd
IPR023173, NADPH_Cyt_P450_Rdtase_alpha
IPR012144, NOS_euk
IPR004030, NOS_N
IPR036119, NOS_N_sf
IPR001433, OxRdtase_FAD/NAD-bd
IPR017938, Riboflavin_synthase-like_b-brl
PfamiView protein in Pfam
PF00667, FAD_binding_1, 1 hit
PF00258, Flavodoxin_1, 1 hit
PF00175, NAD_binding_1, 1 hit
PF02898, NO_synthase, 1 hit
PIRSFiPIRSF000333, NOS, 1 hit
PRINTSiPR00369, FLAVODOXIN
PR00371, FPNCR
SUPFAMiSSF52218, SSF52218, 1 hit
SSF52343, SSF52343, 1 hit
SSF56512, SSF56512, 1 hit
SSF63380, SSF63380, 1 hit
PROSITEiView protein in PROSITE
PS51384, FAD_FR, 1 hit
PS50902, FLAVODOXIN_LIKE, 1 hit
PS60001, NOS, 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 nameiF6REQ2_HORSE
<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: F6REQ2
<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/TrEMBL: July 27, 2011
Last sequence update: April 10, 2019
Last modified: August 12, 2020
This is version 66 of the entry and version 2 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 statusiUnreviewed (UniProtKB/TrEMBL)

<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 proteomeImported
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