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Entry version 81 (29 Sep 2021)
Sequence version 1 (05 Apr 2011)
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Protein

Nitric oxide synthase

Gene

Nos3

Organism
Mus musculus (Mouse)
Status
Unreviewed-Annotation 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>
-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

Produces nitric oxide (NO).

UniRule annotation

<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

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_section">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 bindingi183Iron (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

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 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_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:
Nitric oxide synthaseUniRule annotation (EC:1.14.13.39UniRule annotation)
<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:Nos3Imported
<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>OrganismiMus musculus (Mouse)Imported
<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 identifieri10090 [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 lineageiEukaryotaMetazoaChordataCraniataVertebrataEuteleostomiMammaliaEutheriaEuarchontogliresGliresRodentiaMyomorphaMuroideaMuridaeMurinaeMusMus
<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
  • UP000000589 <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 5

Organism-specific databases

Mouse genome database (MGD) from Mouse Genome Informatics (MGI)

More...
MGIi
MGI:97362, Nos3

Eukaryotic Pathogen, Vector and Host Database Resources

More...
VEuPathDBi
HostDB:ENSMUSG00000028978

<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

jPOST - Japan Proteome Standard Repository/Database

More...
jPOSTi
E9Q9X4

MaxQB - The MaxQuant DataBase

More...
MaxQBi
E9Q9X4

PRoteomics IDEntifications database

More...
PRIDEi
E9Q9X4

ProteomicsDB: a multi-organism proteome resource

More...
ProteomicsDBi
347636

PTM databases

SwissPalm database of S-palmitoylation events

More...
SwissPalmi
E9Q9X4

<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
ENSMUSG00000028978, Expressed in brain blood vessel and 239 other tissues

<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

<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
E9Q9X4

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_and_domains_section">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>Domaini519 – 702Flavodoxin-likeInterPro annotationAdd BLAST184
Domaini755 – 1001FAD-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 – 70DisorderedSequence analysisAdd BLAST70
Regioni817 – 843DisorderedSequence analysisAdd BLAST27
Regioni1079 – 1106DisorderedSequence analysisAdd BLAST28

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 type of amino acids that are over-represented within those regions.<p><a href='/help/compbias' target='_top'>More...</a></p>Compositional biasi35 – 64Pro residuesSequence 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

The HOGENOM Database of Homologous Genes from Fully Sequenced Organisms

More...
HOGENOMi
CLU_001570_16_0_1

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_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>Sequence (1+)i

<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.

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

E9Q9X4-1 [UniParc]FASTAAdd to basket
« Hide
        10         20         30         40         50
MGNLKSVGQE PGPPCGLGLG LGLGLCGKQG PASPAPEPSQ APAPPSPTRP
60 70 80 90 100
APDHSPPLTR PPDGPRFPRV KNWEVGSITY DTLSAQAQQD GPCTSRRCLG
110 120 130 140 150
SLVFPRKLQS RPTQGPSPTE QLLGQARDFI NQYYNSIKRS GSQAHEQRLQ
160 170 180 190 200
EVEAEVAATG TYQLRESELV FGAKQAWRNA PRCVGRIQWG KLQVFDARDC
210 220 230 240 250
RTAQEMFTYI CNHIKYATNR GNLRSAITVF PQRCPGRGDF RIWNSQLIRY
260 270 280 290 300
AGYRQQDGSV RGDPANVEIT ELCIQHGWTP GNGRFDVLPL LLQAPDEPPE
310 320 330 340 350
LFTLPPEMVL EVPLEHPTLE WFAALGLRWY ALPAVSNMLL EIGGLEFPAA
360 370 380 390 400
PFSGWYMSSE IGMRDLCDPH RYNILEDVAV CMDLDTRTTS SLWKDKAAVE
410 420 430 440 450
INVAVLHSYQ LAKVTIVDHH AATASFMKHL ENEQKARGGC PADWAWIVPP
460 470 480 490 500
ISGSLTPVFH QEMVNYFLSP AFRYQPDPWK GSAAKGAGIT RKKTFKEVAN
510 520 530 540 550
AVKISASLMG TVMAKRVKAT ILYGSETGRA QSYAQQLGRL FRKAFDPRVL
560 570 580 590 600
CMDEYDVVSL EHEALVLVVT STFGNGDPPE NGESFAAALM EMSGPYNSSP
610 620 630 640 650
RPEQHKSYKI RFNSVSCSDP LVSSWRRKRK ESSNTDSAGA LGTLRFCVFG
660 670 680 690 700
LGSRAYPHFC AFARAVDTRL EELGGERLLQ LGQGDELCGQ EEAFRGWAQA
710 720 730 740 750
AFQAACETFC VGEDAKAAAR DIFSPKRSWK RQRYRLSTQA ESLQLLPGLT
760 770 780 790 800
HVHRRKMFQA TILSVENLQS SKSTRATILV RLDTGGQEGL QYQPGDHIGV
810 820 830 840 850
CPPNRPGLVE ALLSRVEDPP PSTEPVAVEQ LEKGSPGGPP PGWVRDPRLP
860 870 880 890 900
PCTLRQALTY FLDITSPPSP RLLRLLSTLA EESSEQQELE ALSQDPRRYE
910 920 930 940 950
EWKWFSCPTL LEVLEQFPSV ALPAPLILTQ LPLLQPRYYS VSSAPSAHPG
960 970 980 990 1000
EIHLTIAVLA YRTQDGLGPL HYGVCSTWMS QLKAGDPVPC FIRGAPSFRL
1010 1020 1030 1040 1050
PPDPNLPCIL VGPGTGIAPF RGFWQDRLHD IEIKGLQPAP MTLVFGCRCS
1060 1070 1080 1090 1100
QLDHLYRDEV LDAQQRGVFG QVLTAFSRDP GSPKERQLRG AVPWSFDPPG

PEIPGS
Length:1,106
Mass (Da):122,095
Last modified:April 5, 2011 - 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:i9BCF37A864FEA18F
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
P70313NOS3_MOUSE
Nitric oxide synthase, endothelial
Nos3 Ecnos
1,202Annotation 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>

Genome annotation databases

Ensembl eukaryotic genome annotation project

More...
Ensembli
ENSMUST00000115090; ENSMUSP00000110742; ENSMUSG00000028978

<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

SMRiE9Q9X4
ModBaseiSearch...

PTM databases

SwissPalmiE9Q9X4

Proteomic databases

jPOSTiE9Q9X4
MaxQBiE9Q9X4
PRIDEiE9Q9X4
ProteomicsDBi347636

Protocols and materials databases

Antibodypedia a portal for validated antibodies

More...
Antibodypediai
3692, 1682 antibodies

Genome annotation databases

EnsembliENSMUST00000115090; ENSMUSP00000110742; ENSMUSG00000028978

Organism-specific databases

MGIiMGI:97362, Nos3
VEuPathDBiHostDB:ENSMUSG00000028978

Phylogenomic databases

GeneTreeiENSGT00940000161389
HOGENOMiCLU_001570_16_0_1

Miscellaneous databases

The Stanford Online Universal Resource for Clones and ESTs

More...
SOURCEi
Search...

Gene expression databases

BgeeiENSMUSG00000028978, Expressed in brain blood vessel and 239 other tissues

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

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 nameiE9Q9X4_MOUSE
<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: E9Q9X4
<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/TrEMBL: April 5, 2011
Last sequence update: April 5, 2011
Last modified: September 29, 2021
This is version 81 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 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

Proteomics identificationCombined sources, Reference proteomeImported
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