ID   VEMP_BC133              Reviewed;          82 AA.
AC   Q0Q4E8;
DT   12-JUN-2007, integrated into UniProtKB/Swiss-Prot.
DT   05-SEP-2006, sequence version 1.
DT   03-AUG-2022, entry version 83.
DE   RecName: Full=Envelope small membrane protein {ECO:0000255|HAMAP-Rule:MF_04204};
DE            Short=E protein {ECO:0000255|HAMAP-Rule:MF_04204};
DE            Short=sM protein {ECO:0000255|HAMAP-Rule:MF_04204};
GN   Name=E {ECO:0000255|HAMAP-Rule:MF_04204}; Synonyms=sM; ORFNames=4;
OS   Bat coronavirus 133/2005 (BtCoV) (BtCoV/133/2005).
OC   Viruses; Riboviria; Orthornavirae; Pisuviricota; Pisoniviricetes;
OC   Nidovirales; Cornidovirineae; Coronaviridae; Orthocoronavirinae;
OC   Betacoronavirus; Merbecovirus.
OX   NCBI_TaxID=389230;
OH   NCBI_TaxID=258959; Tylonycteris pachypus (Lesser bamboo bat) (Vespertilio pachypus).
RN   [1]
RP   NUCLEOTIDE SEQUENCE [GENOMIC RNA].
RX   PubMed=16840328; DOI=10.1128/jvi.00697-06;
RA   Tang X.C., Zhang J.X., Zhang S.Y., Wang P., Fan X.H., Li L.F., Li G.,
RA   Dong B.Q., Liu W., Cheung C.L., Xu K.M., Song W.J., Vijaykrishna D.,
RA   Poon L.L.M., Peiris J.S.M., Smith G.J., Chen H., Guan Y.;
RT   "Prevalence and genetic diversity of coronaviruses in bats from China.";
RL   J. Virol. 80:7481-7490(2006).
CC   -!- FUNCTION: Plays a central role in virus morphogenesis and assembly.
CC       Acts as a viroporin and self-assembles in host membranes forming
CC       pentameric protein-lipid pores that allow ion transport. Also plays a
CC       role in the induction of apoptosis. {ECO:0000255|HAMAP-Rule:MF_04204}.
CC   -!- SUBUNIT: Homopentamer. Interacts with membrane protein M in the budding
CC       compartment of the host cell, which is located between endoplasmic
CC       reticulum and the Golgi complex. Interacts with Nucleoprotein.
CC       {ECO:0000255|HAMAP-Rule:MF_04204}.
CC   -!- SUBCELLULAR LOCATION: Host Golgi apparatus membrane {ECO:0000255|HAMAP-
CC       Rule:MF_04204}; Single-pass type III membrane protein
CC       {ECO:0000255|HAMAP-Rule:MF_04204}. Note=The cytoplasmic tail functions
CC       as a Golgi complex-targeting signal. {ECO:0000255|HAMAP-Rule:MF_04204}.
CC   -!- SIMILARITY: Belongs to the betacoronaviruses E protein family.
CC       {ECO:0000255|HAMAP-Rule:MF_04204}.
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DR   EMBL; DQ648794; ABG47056.1; -; Genomic_RNA.
DR   SMR; Q0Q4E8; -.
DR   Proteomes; UP000007449; Genome.
DR   GO; GO:0044178; C:host cell Golgi membrane; IEA:UniProtKB-SubCell.
DR   GO; GO:0016021; C:integral component of membrane; IEA:UniProtKB-UniRule.
DR   GO; GO:0044662; P:disruption by virus of host cell membrane; IEA:UniProtKB-UniRule.
DR   GO; GO:0039707; P:pore formation by virus in membrane of host cell; IEA:InterPro.
DR   GO; GO:0046760; P:viral budding from Golgi membrane; IEA:UniProtKB-UniRule.
DR   CDD; cd21533; MERS-CoV-like_E; 1.
DR   HAMAP; MF_04204; BETA_CORONA_E; 1.
DR   InterPro; IPR044379; E_MERS-CoV-like.
DR   InterPro; IPR043506; E_protein_bCoV.
DR   InterPro; IPR003873; E_protein_CoV.
DR   Pfam; PF02723; CoV_E; 1.
DR   PROSITE; PS51926; COV_E; 1.
PE   3: Inferred from homology;
KW   Apoptosis; Host Golgi apparatus; Host membrane; Membrane;
KW   Reference proteome; Transmembrane; Transmembrane helix.
FT   CHAIN           1..82
FT                   /note="Envelope small membrane protein"
FT                   /id="PRO_0000290327"
FT   TOPO_DOM        1..16
FT                   /note="Virion surface"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_04204"
FT   TRANSMEM        17..37
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_04204"
FT   TOPO_DOM        38..78
FT                   /note="Intravirion"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_04204"
SQ   SEQUENCE   82 AA;  9282 MW;  7247F5A0328E1D21 CRC64;
     MLPFVHEQIG TIIVNFFILT VVCAITLLVC LAVLTAIRLC VQCASGVNTL LFVPAFYIYN
     TGRNAYFKFQ ENRPPFPPED WV