ID   TGB2_LVX                Reviewed;         108 AA.
AC   P27331;
DT   01-AUG-1992, integrated into UniProtKB/Swiss-Prot.
DT   01-AUG-1992, sequence version 1.
DT   07-OCT-2020, entry version 68.
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   Lily virus X.
OC   Viruses; Riboviria; Orthornavirae; Kitrinoviricota; Alsuviricetes;
OC   Tymovirales; Alphaflexiviridae; Potexvirus.
OX   NCBI_TaxID=12194;
OH   NCBI_TaxID=63788; Lilium formosanum.
RN   [1]
RP   NUCLEOTIDE SEQUENCE [GENOMIC RNA].
RX   PubMed=2129538; DOI=10.1099/0022-1317-71-4-917;
RA   Memelink J., van der Vlugt C.I.M., Linthorst H.J.M., Derks A.F.L.M.,
RA   Asjes C.J., Bol J.F.;
RT   "Homologies between the genomes of a carlavirus (lily symptomless virus)
RT   and a potexvirus (lily virus X) from lily plants.";
RL   J. Gen. Virol. 71:917-924(1990).
RN   [2]
RP   REVIEW.
RX   PubMed=15828680; DOI=10.1094/mpmi-18-0283;
RA   Verchot-Lubicz J.;
RT   "A new cell-to-cell transport model for Potexviruses.";
RL   Mol. Plant Microbe Interact. 18:283-290(2005).
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; X15342; CAA33395.1; -; Genomic_RNA.
DR   RefSeq; YP_263305.1; NC_007192.1.
DR   GeneID; 5140997; -.
DR   KEGG; vg:5140997; -.
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; Transmembrane;
KW   Transmembrane helix; Transport; Viral movement protein.
FT   CHAIN           1..108
FT                   /note="Movement protein TGB2"
FT                   /id="PRO_0000222584"
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..71
FT                   /note="Lumenal"
FT                   /evidence="ECO:0000250"
FT   TRANSMEM        72..92
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   TOPO_DOM        93..108
FT                   /note="Cytoplasmic"
FT                   /evidence="ECO:0000250"
SQ   SEQUENCE   108 AA;  11767 MW;  B3D699554D57FE5C CRC64;
     MPLTPPPDYT KPFIAVVVGG TLAAFVLLLT RNTLPHTGDN LHSLPHGGTY CDGTKRIRYG
     GPHRSHVPEL PAKSWALITV VAILIALHFS CLRTHRVHRC VLCHTTSG