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Entry version 12 (10 Feb 2021)
Sequence version 1 (12 Sep 2018)
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Protein

Nitric oxide synthase

Gene

LOC111154402

Organism
Enhydra lutris kenyoni
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>
-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 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%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:LOC111154402Imported
<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>OrganismiEnhydra lutris kenyoniImported
<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 identifieri391180 [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 lineageiEukaryotaMetazoaChordataCraniataVertebrataEuteleostomiMammaliaEutheriaLaurasiatheriaCarnivoraCaniformiaMustelidaeLutrinaeEnhydra
<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
  • UP000248482 <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: Genome assembly

<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 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>Domaini519 – 702Flavodoxin-likeInterPro annotationAdd BLAST184
Domaini755 – 1010FAD-binding FR-typeInterPro annotationAdd BLAST256

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
Regioni815 – 852DisorderedSequence analysisAdd BLAST38

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 biasi38 – 64Pro-richSequence analysisAdd BLAST27

<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

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 4 potential isoforms that are computationally mapped.Show allAlign All

A0A2Y9K8A1-1 [UniParc]FASTAAdd to basket
« Hide
        10         20         30         40         50
MGNLKSVGRE PGPPCGLGLG LGLGLCGKQG PASPTSSEPS RAPAPAPPPA
60 70 80 90 100
PDHSSPPLTR PPDGPKFPRV KNWEVGSITY DTLSAQSQQD GPCTPRRCLG
110 120 130 140 150
SLVFPRKLQS RPSQDPQPAE QLLSQARDFI NQYYSSIKRS GSQAHEQRLQ
160 170 180 190 200
EVEAEVAATG TYQLRESELV FGAKQAWRNA PRCVGRIQWG KLQVFDARDC
210 220 230 240 250
SSAQEMFTYI CNHIKYATNR GNLRSAITVF PQRAPGRGDF RIWNSQLVRY
260 270 280 290 300
AGYRQQDGSV RGDPANVEIT ELCIQHGWTP GNGRFDVLPL LLQAPDEPPE
310 320 330 340 350
LFALPPELVL EVPLEHPTLE WFAALGLRWY ALPAVSNMLL EIGGLEFPAA
360 370 380 390 400
PFSGWYMSTE IGTRNLCDPH RYNILEDVAV CMDLDTRTTS SLWKDKAAVE
410 420 430 440 450
INLAVLHSYQ LAKVTIVDHH AATASFMKHL ENEQKARGGC PADWAWIVPP
460 470 480 490 500
ISGSLTPVFH QEMVNYVLSP AFRYQPDPWK GSGSKGTGIT RKKTFKEVAN
510 520 530 540 550
AVKISASLMG TVMAKRVKAT ILYGSETGRA QSYAQQLGRL FRKAFDPRVL
560 570 580 590 600
CMDEYDVVSL EHETLVLVVT 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
AFQASCETFC VGEDAKAAAR DIFSPKRSWK RQRYRLSTQA EGLQLLPGLI
760 770 780 790 800
HVHRRKMFQA TVLSVENLQS SKSTRATILV RLDTGGQEAL QYQPGDHIGI
810 820 830 840 850
CPPNRPGLVE ALLSRVEDPP PPGEPVAVEQ LEKGSPDLPC TSHPSGGPPP
860 870 880 890 900
GWVRDPRLPP CTLRQALTFF LDITSPPSPQ LLRLLSTLAE ESSEQQELES
910 920 930 940 950
LSQDPRQYEE WKWFRCPTLL EVLEQFPSVA LPAPLLLTQL PLLQPRYYSV
960 970 980 990 1000
SSAPSAHPGE IHLTVAVLAY RTQDGLGPLH YGVCSTWLSQ LKAGDPVPCF
1010 1020 1030 1040 1050
IRGAPSFRLP PDPTLPCILV GPGTGIAPFR GFWQERLHDI DSKGLQPAPM
1060 1070 1080 1090 1100
TLVFGCRCSQ LDHLYRDEVQ DAQERGVFGR VLTAFSREPD SPKTYVQDIL
1110 1120 1130 1140 1150
RTELAAEVHR VLCLERGHMF VCGDVTMATS VLQTVQRILA TEGDMELDEA
1160 1170 1180 1190 1200
GDVIGVLRDQ QRYHEDIFGL TLRTQEVTSR IRTQSFSLQE RHLRGAVPWA
1210
FDPPGPDTPS P
Length:1,211
Mass (Da):133,850
Last modified:September 12, 2018 - 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:iFD4E722845784F15
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 are 4 potential isoforms mapped to this entry.BLASTAlignShow allAdd to basket
EntryEntry nameProtein names
Gene namesLengthAnnotation
A0A2Y9K7I3A0A2Y9K7I3_ENHLU
Nitric oxide synthase
LOC111154402
1,202Annotation 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>
A0A2Y9K986A0A2Y9K986_ENHLU
Nitric oxide synthase
LOC111154402
1,208Annotation 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>
A0A2Y9KDU7A0A2Y9KDU7_ENHLU
Nitric oxide synthase
LOC111154402
1,201Annotation 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>
A0A2Y9KK31A0A2Y9KK31_ENHLU
Nitric-oxide synthase (NADPH)
LOC111154402
997Annotation score:

Annotation score:2 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>

Sequence databases

NCBI Reference Sequences

More...
RefSeqi
XP_022369666.1, XM_022513958.1

Genome annotation databases

KEGG: Kyoto Encyclopedia of Genes and Genomes

More...
KEGGi
elk:111154402

<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

RefSeqiXP_022369666.1, XM_022513958.1

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...

Genome annotation databases

KEGGielk:111154402

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 nameiA0A2Y9K8A1_ENHLU
<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: A0A2Y9K8A1
<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: September 12, 2018
Last sequence update: September 12, 2018
Last modified: February 10, 2021
This is version 12 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

Reference proteomeImported
UniProt is an ELIXIR core data resource
Main funding by: National Institutes of Health

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