NEP_I61A0
ID NEP_I61A0 Reviewed; 118 AA.
AC P08279;
DT 01-AUG-1988, integrated into UniProtKB/Swiss-Prot.
DT 01-AUG-1988, sequence version 1.
DT 29-SEP-2021, entry version 90.
DE RecName: Full=Nuclear export protein;
DE Short=NEP;
DE AltName: Full=Non-structural protein 2;
DE Short=NS2;
DE Flags: Fragment;
GN Name=NS;
OS Influenza A virus (strain A/Tern/South Africa/1961 H5N3).
OC Viruses; Riboviria; Orthornavirae; Negarnaviricota; Polyploviricotina;
OC Insthoviricetes; Articulavirales; Orthomyxoviridae; Alphainfluenzavirus.
OX NCBI_TaxID=384510;
OH NCBI_TaxID=8782; Aves.
RN [1]
RP NUCLEOTIDE SEQUENCE [GENOMIC RNA].
RX PubMed=2954302; DOI=10.1016/0042-6822(87)90223-6;
RA Nakajima K., Nobusawa E., Ogawa T., Nakajima S.;
RT "Genetic divergence of the NS genes of avian influenza viruses.";
RL Virology 158:465-468(1987).
CC -!- FUNCTION: Mediates the nuclear export of encapsidated genomic RNAs
CC (ribonucleoproteins, RNPs). Acts as an adapter between viral RNPs
CC complexes and the nuclear export machinery of the cell. Possesses no
CC intrinsic RNA-binding activity, but includes a C-terminal M1-binding
CC domain. This domain is believed to allow recognition of RNPs to which
CC the M1 protein is bound. Because the M1 protein is not available in
CC large quantities until the later stages of infection, such an indirect
CC recognition mechanism probably ensures that genomic RNPs are not
CC exported from the nucleus before sufficient quantities of viral mRNA
CC and progeny genomic RNA have been synthesized. Furthermore, the RNPs
CC enters the cytoplasm only when they have associated with the M1 protein
CC that is necessary to guide them to the plasma membrane. May down-
CC regulate viral RNA synthesis when overproduced (By similarity).
CC {ECO:0000250}.
CC -!- SUBUNIT: Binds M1 protein. May interact with human nucleoporin RAB/HRB
CC and exportin XPO1/CRM1 (By similarity). {ECO:0000250}.
CC -!- SUBCELLULAR LOCATION: Virion {ECO:0000305}. Host nucleus {ECO:0000250}.
CC -!- ALTERNATIVE PRODUCTS:
CC Event=Alternative splicing; Named isoforms=2;
CC Name=NEP; Synonyms=NS2;
CC IsoId=P08279-1; Sequence=Displayed;
CC Name=NS1;
CC IsoId=P08278-1; Sequence=External;
CC -!- MISCELLANEOUS: Average number present in a viral particle is estimated
CC to be 130-200 molecules.
CC -!- SIMILARITY: Belongs to the influenza viruses NEP family. {ECO:0000305}.
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DR EMBL; M16564; AAA43573.1; -; Genomic_RNA.
DR SMR; P08279; -.
DR Proteomes; UP000101256; Genome.
DR GO; GO:0042025; C:host cell nucleus; IEA:UniProtKB-SubCell.
DR GO; GO:0039675; P:exit of virus from host cell nucleus through nuclear pore; IEA:InterPro.
DR InterPro; IPR000968; Flu_NS2.
DR Pfam; PF00601; Flu_NS2; 1.
PE 3: Inferred from homology;
KW Alternative splicing; Host nucleus; Host-virus interaction; Transport;
KW Virion.
FT CHAIN <1..118
FT /note="Nuclear export protein"
FT /id="PRO_0000079009"
FT MOTIF 9..18
FT /note="Nuclear export signal"
FT /evidence="ECO:0000250"
FT MOTIF 82..91
FT /note="Nuclear export signal"
FT /evidence="ECO:0000250"
FT NON_TER 1
SQ SEQUENCE 118 AA; 13990 MW; C715D2501D3CF277 CRC64;
NTVSSFQDIL MRMSKMQLGT SSEDLNGMIT QFESLKLYRD SLGEAVMRMG DLYSLPSRNG
KWREQLSQKF EEIRWLIEEV RHRAKMTENS FEQITFMQAL QLLLEVEQEI RTFSFQLI