ID   NCAP_MEASC              Reviewed;         525 AA.
AC   Q9WMB5;
DT   15-JUN-2010, integrated into UniProtKB/Swiss-Prot.
DT   01-NOV-1999, sequence version 1.
DT   29-SEP-2021, entry version 62.
DE   RecName: Full=Nucleoprotein;
DE   AltName: Full=Nucleocapsid protein;
DE            Short=NP;
DE            Short=Protein N;
GN   Name=N; Synonyms=NP;
OS   Measles virus (strain Ichinose-B95a) (MeV) (Subacute sclerose
OS   panencephalitis virus).
OC   Viruses; Riboviria; Orthornavirae; Negarnaviricota; Haploviricotina;
OC   Monjiviricetes; Mononegavirales; Paramyxoviridae; Orthoparamyxovirinae;
OC   Morbillivirus.
OX   NCBI_TaxID=645098;
OH   NCBI_TaxID=9606; Homo sapiens (Human).
RN   [1]
RP   NUCLEOTIDE SEQUENCE [GENOMIC RNA].
RX   PubMed=10949953; DOI=10.1023/a:1008196729676;
RA   Takeuchi K., Miyajima N., Kobune F., Tashiro M.;
RT   "Comparative nucleotide sequence analyses of the entire genomes of B95a
RT   cell-isolated and vero cell-isolated measles viruses from the same
RT   patient.";
RL   Virus Genes 20:253-257(2000).
RN   [2]
RP   INTERACTION WITH HUMAN PPIA AND PPIB, AND SUBCELLULAR LOCATION.
RX   PubMed=20147391; DOI=10.1128/jvi.02168-09;
RA   Watanabe A., Yoneda M., Ikeda F., Terao-Muto Y., Sato H., Kai C.;
RT   "CD147/EMMPRIN acts as a functional entry receptor for measles virus on
RT   epithelial cells.";
RL   J. Virol. 84:4183-4193(2010).
CC   -!- FUNCTION: Encapsidates the genome in a ratio of 1 N per 6
CC       ribonucleotides, protecting it from nucleases. The nucleocapsid (NC)
CC       has a helical structure with either 12.35 or 11.64 N per turn,
CC       approximately 20 nm in diameter, with a hollow central cavity
CC       approximately 5 nm in diameter. The encapsidated genomic RNA is termed
CC       the NC and serves as template for transcription and replication. During
CC       replication, encapsidation by N is coupled to RNA synthesis and all
CC       replicative products are resistant to nucleases. N is released in the
CC       blood following lysis of measles infected cells, it interacts then with
CC       human FCGR2B on immune cells, inducing apoptosis and blocking
CC       inflammatory immune response. Ntail binds to a protein on human thymic
CC       epithelial cells, termed Nucleoprotein Receptor (NR), inducing growth
CC       arrest (By similarity). {ECO:0000250}.
CC   -!- SUBUNIT: Homomultimerizes to form the nucleocapsid. Binds to viral
CC       genomic RNA. In nucleocapsid, binds the P protein and thereby positions
CC       the polymerase on the template. Interacts with human FCGR2B protein (By
CC       similarity). Interacts with human PPIA/CYPA and PPIB/CYPB
CC       (PubMed:20147391). {ECO:0000250, ECO:0000269|PubMed:20147391}.
CC   -!- SUBCELLULAR LOCATION: Virion {ECO:0000305}. Host cytoplasm
CC       {ECO:0000269|PubMed:20147391}.
CC   -!- DOMAIN: Ncore is globular and carries regions required for N self-
CC       assembly and RNA-binding. Ntail is an intrinsically disordered
CC       monomeric domain (By similarity). {ECO:0000250}.
CC   -!- SIMILARITY: Belongs to the paramyxoviruses nucleocapsid family.
CC       {ECO:0000305}.
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DR   EMBL; AB016162; BAA34977.1; -; Genomic_RNA.
DR   RefSeq; NP_056918.1; NC_001498.1.
DR   SMR; Q9WMB5; -.
DR   IntAct; Q9WMB5; 13.
DR   GeneID; 1489804; -.
DR   KEGG; vg:1489804; -.
DR   Proteomes; UP000008699; Genome.
DR   GO; GO:0019029; C:helical viral capsid; IEA:UniProtKB-KW.
DR   GO; GO:0030430; C:host cell cytoplasm; IEA:UniProtKB-SubCell.
DR   GO; GO:0019013; C:viral nucleocapsid; IEA:UniProtKB-KW.
DR   GO; GO:0003723; F:RNA binding; IEA:UniProtKB-KW.
DR   GO; GO:0005198; F:structural molecule activity; IEA:InterPro.
DR   InterPro; IPR002021; Paramyx_ncap.
DR   Pfam; PF00973; Paramyxo_ncap; 1.
PE   1: Evidence at protein level;
KW   Capsid protein; Helical capsid protein; Host cytoplasm;
KW   Host-virus interaction; Reference proteome; Ribonucleoprotein; RNA-binding;
KW   Viral nucleoprotein; Virion.
FT   CHAIN           1..525
FT                   /note="Nucleoprotein"
FT                   /id="PRO_0000394713"
FT   REGION          1..400
FT                   /note="Ncore"
FT                   /evidence="ECO:0000250"
FT   REGION          1..375
FT                   /note="Homomultimerization"
FT                   /evidence="ECO:0000250"
FT   REGION          401..525
FT                   /note="Ntail"
FT                   /evidence="ECO:0000250"
FT   REGION          418..525
FT                   /note="Disordered"
FT                   /evidence="ECO:0000256|SAM:MobiDB-lite"
FT   REGION          477..505
FT                   /note="P protein-binding"
FT                   /evidence="ECO:0000250"
FT   COMPBIAS        430..456
FT                   /note="Basic and acidic residues"
FT                   /evidence="ECO:0000256|SAM:MobiDB-lite"
SQ   SEQUENCE   525 AA;  58018 MW;  6A2FAE3F9630FC02 CRC64;
     MATLLRSLAL FKRNKDKPPI TSGSGGAIRG IKHIIIVPIP GDSSITTRSR LLDRLVRLIG
     NPDVSGPKLT GALIGILSLF VESPGQLIQR ITDDPDVSIR LLEVVQSDQS QSGLTFASRG
     TNMEDEADQY FSHDDPSSSD QSRSGWFENK EISDIEVQDP EGFNMILGTI LAQIWVLLAK
     AVTAPDTAAD SELRRWIKYT QQRRVVGEFR LERKWLDVVR NRIAEDLSLR RFMVALILDI
     KRTPGNKPRI AEMICDIDTY IVEAGLASFI LTIKFGIETM YPALGLHEFA GELSTLESLM
     NLYQQMGETA PYMVILENSI QNKFSAGSYP LLWSYAMGVG VELENSMGGL NFGRSYFDPA
     YFRLGQEMVR RSAGKVSSTL ASELGITAED ARLVSEIAMH TTEDRISRAV GPRQAQVSFL
     HGDQSENELP GLGGKEDRRV KQGRGEARES YRETGSSRAS DARAAHPPTS MPLDIDTASE
     SGQDPQDSRR SADALLRLQA MAGILEEQGS DTDTPRVYND RDLLD