ID   TGB2_SHVX               Reviewed;         103 AA.
AC   Q04582;
DT   01-JUN-1994, integrated into UniProtKB/Swiss-Prot.
DT   01-JUN-1994, sequence version 1.
DT   29-SEP-2021, entry version 69.
DE   RecName: Full=Movement protein TGB2;
DE   AltName: Full=12 kDa protein;
DE   AltName: Full=Triple gene block 2 protein;
DE            Short=TGBp2;
GN   ORFNames=ORF3;
OS   Shallot virus X (ShVX).
OC   Viruses; Riboviria; Orthornavirae; Kitrinoviricota; Alsuviricetes;
OC   Tymovirales; Alphaflexiviridae; Allexivirus; Acarallexivirus.
OX   NCBI_TaxID=31770;
OH   NCBI_TaxID=28911; Allium cepa var. aggregatum (Shallot) (Allium ascalonicum).
RN   [1]
RP   NUCLEOTIDE SEQUENCE [GENOMIC RNA].
RX   PubMed=1339468; DOI=10.1099/0022-1317-73-10-2553;
RA   Kanyuka K.V., Vishnichenko V.K., Levay K.E., Kondrikov D.Y., Ryabov E.V.,
RA   Zavriev S.K.;
RT   "Nucleotide sequence of shallot virus X RNA reveals a 5'-proximal cistron
RT   closely related to those of potexviruses and a unique arrangement of the
RT   3'-proximal cistrons.";
RL   J. Gen. Virol. 73:2553-2560(1992).
CC   -!- FUNCTION: Plays a role in viral cell-to-cell propagation, by
CC       facilitating genome transport to neighboring plant cells through
CC       plasmosdesmata,. {ECO:0000250}.
CC   -!- SUBCELLULAR LOCATION: Host endoplasmic reticulum membrane
CC       {ECO:0000250}.
CC   -!- MISCELLANEOUS: TGBp1, TGBp2 and TGBp3 seem to act together for cell-to-
CC       cell propagation. TGBp1 is the main movement protein that physically
CC       cross the plasmodesma with the viral genome. TGBp2 and TGBp3 would
CC       facilitate TGBp1 function.
CC   -!- SIMILARITY: Belongs to the Tymovirales TGBp2 protein family.
CC       {ECO:0000305}.
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DR   EMBL; M97264; AAA47789.1; -; Genomic_RNA.
DR   PIR; JQ1736; JQ1736.
DR   RefSeq; NP_620650.1; NC_003795.1.
DR   GeneID; 944364; -.
DR   KEGG; vg:944364; -.
DR   Proteomes; UP000001663; Genome.
DR   GO; GO:0044167; C:host cell endoplasmic reticulum membrane; IEA:UniProtKB-SubCell.
DR   GO; GO:0016021; C:integral component of membrane; IEA:UniProtKB-KW.
DR   GO; GO:0046740; P:transport of virus in host, cell to cell; IEA:UniProtKB-KW.
DR   InterPro; IPR001896; Plant_vir_prot.
DR   Pfam; PF01307; Plant_vir_prot; 1.
PE   3: Inferred from homology;
KW   Host endoplasmic reticulum; Host membrane; Membrane; Reference proteome;
KW   Transmembrane; Transmembrane helix; Transport; Viral movement protein.
FT   CHAIN           1..103
FT                   /note="Movement protein TGB2"
FT                   /id="PRO_0000222595"
FT   TOPO_DOM        1..8
FT                   /note="Cytoplasmic"
FT                   /evidence="ECO:0000250"
FT   TRANSMEM        9..29
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   TOPO_DOM        30..70
FT                   /note="Lumenal"
FT                   /evidence="ECO:0000250"
FT   TRANSMEM        71..91
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   TOPO_DOM        92..103
FT                   /note="Cytoplasmic"
FT                   /evidence="ECO:0000250"
SQ   SEQUENCE   103 AA;  11246 MW;  FC2701EC78F9E4C1 CRC64;
     MSFAPPPDYS KIYLALGCGL GLGFVVYASR VNHLPHVGDN THNLPHGGQY CDGNKRVLYS
     GPKSGSSPTN NLWPFITVIA LTLAILLTSC PRRRVCIRCS QHH