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Entry version 101 (07 Oct 2020)
Sequence version 1 (21 Jul 1986)
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Protein

Non-structural protein 1

Gene

NS

Organism
Influenza B virus (strain B/Lee/1940)
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

Binds and inhibits the conjugation of the ubiquitin-like G1P2/ISG15 protein to its target proteins. Since G1P2/ISG15 is an early antiviral protein, NS1 may inhibit the host antiviral response. Prevents EIF2AK2/PKR activation, either by binding double strand RNA or by interacting directly with EIF2AK2/PKR. Also binds poly(A) and U6 snRNA.UniRule annotation1 Publication

<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 functionRNA-binding
Biological processHost-virus interaction, Inhibition of host innate immune response by virus, Inhibition of host interferon signaling pathway by virus, Inhibition of host ISG15 by virus, Inhibition of host PKR by virus, Interferon antiviral system evasion, Viral immunoevasion

<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:
Non-structural protein 1UniRule annotation
Short name:
NS1UniRule annotation
Alternative name(s):
NS1AUniRule 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:NSUniRule annotation
<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>OrganismiInfluenza B virus (strain B/Lee/1940)
<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 identifieri518987 [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 lineageiVirusesRiboviriaOrthornaviraeNegarnaviricotaPolyploviricotinaInsthoviricetesArticulaviralesOrthomyxoviridaeBetainfluenzavirus
<p>This subsection of the <a href="http://www.uniprot.org/help/names%5Fand%5Ftaxonomy%5Fsection">Names and taxonomy</a> section only exists in viral entries and indicates the host(s) either as a specific organism or taxonomic group of organisms that are susceptible to be infected by a virus.<p><a href='/help/virus_host' target='_top'>More...</a></p>Virus hostiHomo sapiens (Human) [TaxID: 9606]
<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
  • UP000119685 <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
  • UP000008158 Componenti: Genome

<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

Host cytoplasm, Host nucleus

<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%5Fand%5Fbiotech%5Fsection">'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>Mutagenesisi33R → A: Partial loss of dsRNA-binding and no effect on inhibition of IFN-beta promoter; when associated with A-38. 1 Publication1
Mutagenesisi38R → A: Partial loss of dsRNA-binding and no effect on inhibition of IFN-beta promoter; when associated with A-33. 1 Publication1
Mutagenesisi47R → A: Complete loss of dsRNA-binding and 40% loss of inhibition of IFN-beta promoter; when associated with A-50. 1 Publication1
Mutagenesisi50R → A: Complete loss of dsRNA-binding and 40% loss of inhibition of IFN-beta promoter; when associated with A-47. 1 Publication1
Mutagenesisi52K → A: Partial loss of dsRNA-binding and 15% loss of inhibition of IFN-beta promoter; when associated with A-53 and A-54. 1 Publication1
Mutagenesisi53R → A: Partial loss of dsRNA-binding and 15% loss of inhibition of IFN-beta promoter; when associated with A-52 and A-54. 1 Publication1
Mutagenesisi54K → A: Partial loss of dsRNA-binding and 15% loss of inhibition of IFN-beta promoter; when associated with A-52 and A-53. 1 Publication1
Mutagenesisi58R → A: Complete loss of dsRNA-binding and 20% loss of inhibition of IFN-beta promoter; when associated with A-60 and A-64. 1 Publication1
Mutagenesisi60K → A: Complete loss of dsRNA-binding and 20% loss of inhibition of IFN-beta promoter; when associated with A-58 and A-64. 1 Publication1
Mutagenesisi64K → A: Complete loss of dsRNA-binding and 20% loss of inhibition of IFN-beta promoter; when associated with A-58 and A-60. 1 Publication1
Mutagenesisi70K → A: No effect on dsRNA-binding and inhibition of IFN-beta promoter; when associated with A-71. 1 Publication1
Mutagenesisi71R → A: No effect on dsRNA-binding and inhibition of IFN-beta promoter; when associated with A-70. 1 Publication1
Mutagenesisi77R → A: Complete loss of dsRNA-binding and inhibition of IFN-beta promoter; when associated with A-78. 1 Publication1
Mutagenesisi78K → A: Complete loss of dsRNA-binding and inhibition of IFN-beta promoter; when associated with A-77. 1 Publication1
Mutagenesisi83K → A: No effect on dsRNA-binding and 45% loss of inhibition of IFN-beta promoter; when associated with A-86. 1 Publication1
Mutagenesisi86K → A: No effect on dsRNA-binding and 45% loss of inhibition of IFN-beta promoter; when associated with A-83. 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 or proteolytic cleavage.<p><a href='/help/chain' target='_top'>More...</a></p>ChainiPRO_00000789601 – 281Non-structural protein 1Add BLAST281

<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

Homodimer.

Interacts with and inhibits human G1P2 conjugation by UBE1L.

UniRule annotation1 Publication

<p>This subsection of the '<a href="http://www.uniprot.org/help/interaction%5Fsection">Interaction</a>' section provides information about binary protein-protein interactions. The data presented in this section are a quality-filtered subset of binary interactions automatically derived from the <a href="https://www.ebi.ac.uk/intact/">IntAct database</a>. It is updated at every <a href="http://www.uniprot.org/help/synchronization">UniProt release</a>.<p><a href='/help/binary_interactions' target='_top'>More...</a></p>Binary interactionsi

Protein-protein interaction databases

Database of interacting proteins

More...
DIPi
DIP-59701N

Protein interaction database and analysis system

More...
IntActi
P03502, 1 interactor

<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

Secondary structure

1281
Legend: HelixTurnBeta strandPDB Structure known for this area
Show more details

3D structure databases

Biological Magnetic Resonance Data Bank

More...
BMRBi
P03502

SWISS-MODEL Repository - a database of annotated 3D protein structure models

More...
SMRi
P03502

Database of comparative protein structure models

More...
ModBasei
Search...

Protein Data Bank in Europe - Knowledge Base

More...
PDBe-KBi
Search...

Miscellaneous databases

Relative evolutionary importance of amino acids within a protein sequence

More...
EvolutionaryTracei
P03502

<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

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 – 103G1P2-bindingAdd BLAST103
Regioni1 – 93RNA-binding and homodimerizationUniRule annotationAdd BLAST93

Motif

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the 'Family and Domains' section describes a short (usually not more than 20 amino acids) conserved sequence motif of biological significance.<p><a href='/help/motif' target='_top'>More...</a></p>Motifi50 – 55Nuclear localization signalUniRule annotation6

<p>This subsection of the 'Family and domains' section provides general information on the biological role of a domain. The term 'domain' is intended here in its wide acceptation, it may be a structural domain, a transmembrane region or a functional domain. Several domains are described in this subsection.<p><a href='/help/domain_cc' target='_top'>More...</a></p>Domaini

Both N-terminus and C-terminus can inhibit IFN-beta promoter activation and IRF-3 nuclear translocation.

<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 influenza B viruses NS1 family.UniRule annotation

Family and domain databases

HAMAP database of protein families

More...
HAMAPi
MF_04066, INFV_NS1, 1 hit

Integrated resource of protein families, domains and functional sites

More...
InterProi
View protein in InterPro
IPR004208, NS1
IPR009068, S15_NS1_RNA-bd

Pfam protein domain database

More...
Pfami
View protein in Pfam
PF02942, Flu_B_NS1, 1 hit

PIRSF; a whole-protein classification database

More...
PIRSFi
PIRSF003938, Flu_B_NS1, 1 hit

Superfamily database of structural and functional annotation

More...
SUPFAMi
SSF47060, SSF47060, 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>Sequences (2)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 describes 2 <p>This subsection of the 'Sequence' section lists the alternative protein sequences (isoforms) that can be generated from the same gene by a single or by the combination of up to four biological events (alternative promoter usage, alternative splicing, alternative initiation and ribosomal frameshifting). Additionally, this section gives relevant information on each alternative protein isoform. This section is only present in reviewed entries, i.e. in UniProtKB/Swiss-Prot.<p><a href='/help/alternative_products' target='_top'>More...</a></p> isoformsi produced by alternative splicing. AlignAdd to basket
Isoform NS1 (identifier: P03502-1) [UniParc]FASTAAdd to basket

This isoform has been chosen as the <div> <p><b>What is the canonical sequence?</b><p><a href='/help/canonical_and_isoforms' target='_top'>More...</a></p>canonicali sequence. All positional information in this entry refers to it. This is also the sequence that appears in the downloadable versions of the entry.

« Hide
        10         20         30         40         50
MADNMTTTQI EVGPGATNAT INFEAGILEC YERFSWQRAL DYPGQDRLHR
60 70 80 90 100
LKRKLESRIK THNKSEPENK RMSLEERKAI GVKMMKVLLF MDPSAGIEGF
110 120 130 140 150
EPYCVKNPST SKCPNYDWTD YPPTPGKYLD DIEEEPENVD HPIEVVLRDM
160 170 180 190 200
NNKDARQKIK DEVNTQKEGK FRLTIKRDIR NVLSLRVLVN GTFLKHPNGD
210 220 230 240 250
KSLSTLHRLN AYDQNGGLVA KLVATDDRTV EDEKDGHRIL NSLFERFDEG
260 270 280
HSKPIRAAET AVGVLSQFGQ EHRLSPEEGD N
Length:281
Mass (Da):32,067
Last modified:July 21, 1986 - 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:i09C376EA400CA73F
GO
Isoform NEP (identifier: P03511-1) [UniParc]FASTAAdd to basket
Also known as: NS2
The sequence of this isoform can be found in the external entry P03511.
Isoforms of the same protein are often annotated in two different entries if their sequences differ significantly.
Length:122
Mass (Da):14,238
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
J02096 Genomic RNA Translation: AAA43756.1

Protein sequence database of the Protein Information Resource

More...
PIRi
A04093, MNIVA

NCBI Reference Sequences

More...
RefSeqi
NP_056666.1, NC_002211.1 [P03502-1]

Genome annotation databases

Database of genes from NCBI RefSeq genomes

More...
GeneIDi
26824008

KEGG: Kyoto Encyclopedia of Genes and Genomes

More...
KEGGi
vg:26824008

Keywords - Coding sequence diversityi

Alternative splicing

<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
J02096 Genomic RNA Translation: AAA43756.1
PIRiA04093, MNIVA
RefSeqiNP_056666.1, NC_002211.1 [P03502-1]

3D structure databases

Select the link destinations:

Protein Data Bank Europe

More...
PDBei

Protein Data Bank RCSB

More...
RCSB PDBi

Protein Data Bank Japan

More...
PDBji
Links Updated
PDB entryMethodResolution (Å)ChainPositionsPDBsum
1XEQX-ray2.10A/B1-103[»]
3R66X-ray2.30A/B1-103[»]
3RT3X-ray2.01C1-103[»]
3SDLX-ray2.29A/B1-103[»]
6J62X-ray2.49C1-103[»]
6JH0X-ray2.40A/C1-103[»]
6JH1X-ray3.00A/B1-103[»]
BMRBiP03502
SMRiP03502
ModBaseiSearch...
PDBe-KBiSearch...

Protein-protein interaction databases

DIPiDIP-59701N
IntActiP03502, 1 interactor

Genome annotation databases

GeneIDi26824008
KEGGivg:26824008

Miscellaneous databases

EvolutionaryTraceiP03502

Family and domain databases

HAMAPiMF_04066, INFV_NS1, 1 hit
InterProiView protein in InterPro
IPR004208, NS1
IPR009068, S15_NS1_RNA-bd
PfamiView protein in Pfam
PF02942, Flu_B_NS1, 1 hit
PIRSFiPIRSF003938, Flu_B_NS1, 1 hit
SUPFAMiSSF47060, SSF47060, 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 nameiNS1_INBLE
<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: P03502
<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: July 21, 1986
Last sequence update: July 21, 1986
Last modified: October 7, 2020
This is version 101 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 programViral 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

3D-structure, Reference proteome

Documents

  1. PDB cross-references
    Index of Protein Data Bank (PDB) cross-references
  2. SIMILARITY comments
    Index of protein domains and families
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