ID   IORF_CVMS               Reviewed;         207 AA.
AC   P18455;
DT   01-NOV-1990, integrated into UniProtKB/Swiss-Prot.
DT   01-NOV-1990, sequence version 1.
DT   29-SEP-2021, entry version 55.
DE   RecName: Full=Protein I;
DE   AltName: Full=Accessory protein N2;
DE   AltName: Full=N internal ORF protein;
DE            Short=IORF;
DE   AltName: Full=Protein in nucleocapsid ORF;
GN   Name=N; Synonyms=I; ORFNames=7b;
OS   Murine coronavirus (strain S) (MHV-S) (Murine hepatitis virus).
OC   Viruses; Riboviria; Orthornavirae; Pisuviricota; Pisoniviricetes;
OC   Nidovirales; Cornidovirineae; Coronaviridae; Orthocoronavirinae;
OC   Betacoronavirus; Embecovirus.
OX   NCBI_TaxID=11145;
OH   NCBI_TaxID=10090; Mus musculus (Mouse).
RN   [1]
RP   NUCLEOTIDE SEQUENCE [GENOMIC RNA].
RX   PubMed=2171216; DOI=10.1016/0042-6822(90)90316-j;
RA   Parker M.M., Masters P.S.;
RT   "Sequence comparison of the N genes of five strains of the coronavirus
RT   mouse hepatitis virus suggests a three domain structure for the
RT   nucleocapsid protein.";
RL   Virology 179:463-468(1990).
CC   -!- FUNCTION: Structural protein that is not essential for the viral
CC       replication either in tissue culture or in its natural host.
CC       {ECO:0000250}.
CC   -!- SUBCELLULAR LOCATION: Virion {ECO:0000250}.
CC   -!- MISCELLANEOUS: The gene encoding this protein is included within the N
CC       gene (alternative ORF).
CC   -!- SIMILARITY: Belongs to the coronavirus I protein family. {ECO:0000305}.
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DR   EMBL; M35255; AAA46469.1; -; Genomic_RNA.
DR   PIR; G45340; G45340.
DR   CDD; cd21662; embe-CoV_Protein-I_like; 1.
DR   InterPro; IPR004876; Corona_nucI.
DR   InterPro; IPR044311; N2-like_embe-CoV.
DR   Pfam; PF03187; Corona_I; 1.
PE   3: Inferred from homology;
KW   Virion.
FT   CHAIN           1..207
FT                   /note="Protein I"
FT                   /id="PRO_0000106124"
SQ   SEQUENCE   207 AA;  22901 MW;  D4C1E60836A8BC01 CRC64;
     MESSRRPLGL TKPSALEIME IEAEGISQSR LQLLNPIPGV WFPITLGFRA LPNSRREKSF
     SLYKDRECLL PMESQLQSKR DIGIDTTDVL LKHLMASRSS YCPDGIFTIS EQGPMLAQSM
     ATISKELSGS QANRPTLRPL PILLKGTQVA MRLFLLGLRP VRFCLRVFML KAQEGLHLLA
     DLVRGHNPVG QIIALEAAPT SASLPLL