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A4K147

- NCAP_I54A2

UniProt

A4K147 - NCAP_I54A2

Protein

Nucleoprotein

Gene

NP

Organism
Influenza A virus (strain A/Malaysia:Malaya/302/1954 H1N1)
Status
Reviewed - Annotation score: 2 out of 5- Protein inferred from homologyi
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    • History
      Entry version 34 (01 Oct 2014)
      Sequence version 1 (01 May 2007)
      Previous versions | rss
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    Functioni

    Encapsidates the negative strand viral RNA, protecting it from nucleases. The encapsidated genomic RNA is termed the ribonucleoprotein (RNP) and serves as template for transcription and replication. The RNP needs to be localized in the nucleus to start an infectious cycle, but is too large to diffuse through the nuclear pore complex. NP comprises at least 2 nuclear localization signals and is responsible of the active RNP import into the nucleus through the cellular importin alpha/beta pathway. Later in the infection, nucleus export of RNP are mediated through viral proteins NEP interacting with M1 which binds nucleoproteins. It is possible that the nucleoprotein binds directly exportin-1 (XPO1) and plays an active role in RNP nuclear export. M1 interaction with RNP seems to hide nucleoprotein's nuclear localization signals. Soon after a virion infects a new cell, M1 dissociates from the RNP under acidification of the virion driven by M2 protein. Dissociation of M1 from RNP unmask nucleoprotein's nuclear localization signals, targeting the RNP to the nucleus By similarity.By similarity

    GO - Molecular functioni

    1. RNA binding Source: UniProtKB-KW
    2. structural molecule activity Source: InterPro

    GO - Biological processi

    1. viral entry into host cell Source: UniProtKB-KW
    2. viral penetration into host nucleus Source: UniProtKB-KW

    Keywords - Biological processi

    Host-virus interaction, Viral penetration into host nucleus, Virus entry into host cell

    Keywords - Ligandi

    RNA-binding, Viral nucleoprotein

    Names & Taxonomyi

    Protein namesi
    Recommended name:
    Nucleoprotein
    Alternative name(s):
    Nucleocapsid protein
    Short name:
    Protein N
    Gene namesi
    Name:NP
    OrganismiInfluenza A virus (strain A/Malaysia:Malaya/302/1954 H1N1)
    Taxonomic identifieri425566 [NCBI]
    Taxonomic lineageiVirusesssRNA negative-strand virusesOrthomyxoviridaeInfluenzavirus A
    Virus hostiAves [TaxID: 8782]
    Homo sapiens (Human) [TaxID: 9606]
    Sus scrofa (Pig) [TaxID: 9823]
    ProteomesiUP000008219: Genome

    Subcellular locationi

    Virion Curated. Host nucleus By similarity

    GO - Cellular componenti

    1. helical viral capsid Source: UniProtKB-KW
    2. host cell nucleus Source: UniProtKB-SubCell
    3. intracellular Source: GOC
    4. viral nucleocapsid Source: UniProtKB-KW

    Keywords - Cellular componenti

    Capsid protein, Helical capsid protein, Host nucleus, Virion

    PTM / Processingi

    Molecule processing

    Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
    Chaini1 – 498498NucleoproteinPRO_0000372939Add
    BLAST

    Interactioni

    Subunit structurei

    Homomultimerizes to form the nucleocapsid. May bind human exportin-1. Binds to viral genomic RNA. Protein-RNA contacts are mediated by a combination of electrostatic interactions between positively charged residues and the phosphate backbone and planar interactions between aromatic side chains and bases By similarity.By similarity

    Structurei

    3D structure databases

    ProteinModelPortaliA4K147.
    SMRiA4K147. Positions 22-496.
    ModBaseiSearch...
    MobiDBiSearch...

    Family & Domainsi

    Motif

    Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
    Motifi1 – 1818Unconventional nuclear localization signalBy similarityAdd
    BLAST
    Motifi198 – 21619Bipartite nuclear localization signalBy similarityAdd
    BLAST

    Sequence similaritiesi

    Family and domain databases

    InterProiIPR002141. Flu_NP.
    [Graphical view]
    PfamiPF00506. Flu_NP. 1 hit.
    [Graphical view]

    Sequencei

    Sequence statusi: Complete.

    A4K147-1 [UniParc]FASTAAdd to Basket

    « Hide

    MASQGTKRSY EQMETDGERQ NATEIRASVG KMIDGIGRFY IQMCTELKLS    50
    DYEGRLIQNS LTIERMVLSA FDERRNKYLE EHPSAGKDPK KTGGPIYKRV 100
    DRKWMRELVL YDKEEIRRIW RQANNGDDAT AGLTHMMIWH SNLNDTTYQR 150
    TRALVRTGMD PRMCSLMQGS TLPRRSGAAG AAVKGVGTMV MELIRMIKRG 200
    INDRNFWRGE NGRKTRIAYE RMCNILKGKF QTAAQRAMMD QVRESRNPGN 250
    AEIEDLIFLA RSALILRGSV AHKSCLPACV YGPAVASGYD FEKEGYSLVG 300
    IDPFKLLQNS QVYSLIRPNE NPAHKSQLVW MACNSAAFED LRVSSFIRGT 350
    KVIPRGKLST RGVQIASNEN MDTMESSTLE LRSRYWAIRT RSGGNTNQQR 400
    ASAGQISIQP TFSVQRNLPF DKTTIMAAFT GNAEGRTSDM RAEIIRMMES 450
    AKPEEVSFQG RGVFELSDEK AANPIVPSFD MSNEGSYFFG DNAEEYDN 498
    Length:498
    Mass (Da):56,197
    Last modified:May 1, 2007 - v1
    Checksum:iAB3CD53EC8274B5C
    GO

    Sequence databases

    Select the link destinations:
    EMBL
    GenBank
    DDBJ
    Links Updated
    CY021056 Viral cRNA. Translation: ABO52284.1.

    Cross-referencesi

    Sequence databases

    Select the link destinations:
    EMBL
    GenBank
    DDBJ
    Links Updated
    CY021056 Viral cRNA. Translation: ABO52284.1 .

    3D structure databases

    ProteinModelPortali A4K147.
    SMRi A4K147. Positions 22-496.
    ModBasei Search...
    MobiDBi Search...

    Protocols and materials databases

    Structural Biology Knowledgebase Search...

    Family and domain databases

    InterProi IPR002141. Flu_NP.
    [Graphical view ]
    Pfami PF00506. Flu_NP. 1 hit.
    [Graphical view ]
    ProtoNeti Search...

    Publicationsi

    1. Cited for: NUCLEOTIDE SEQUENCE [GENOMIC RNA].
    2. The NIAID Influenza Genome Sequencing Consortium
      Submitted (MAR-2007) to the EMBL/GenBank/DDBJ databases
      Cited for: NUCLEOTIDE SEQUENCE [GENOMIC RNA].

    Entry informationi

    Entry nameiNCAP_I54A2
    AccessioniPrimary (citable) accession number: A4K147
    Entry historyi
    Integrated into UniProtKB/Swiss-Prot: May 5, 2009
    Last sequence update: May 1, 2007
    Last modified: October 1, 2014
    This is version 34 of the entry and version 1 of the sequence. [Complete history]
    Entry statusiReviewed (UniProtKB/Swiss-Prot)
    Annotation programViral Protein Annotation Program

    Miscellaneousi

    Keywords - Technical termi

    Complete proteome

    Documents

    1. SIMILARITY comments
      Index of protein domains and families

    External Data

    Dasty 3