ID   P20_BYVU                Reviewed;         180 AA.
AC   Q08544;
DT   04-DEC-2007, integrated into UniProtKB/Swiss-Prot.
DT   01-NOV-1996, sequence version 1.
DT   23-FEB-2022, entry version 54.
DE   RecName: Full=20 kDa protein;
DE   AltName: Full=p20;
GN   ORFNames=ORF7;
OS   Beet yellows virus (isolate Ukraine) (BYV) (Sugar beet yellows virus).
OC   Viruses; Riboviria; Orthornavirae; Kitrinoviricota; Alsuviricetes;
OC   Martellivirales; Closteroviridae; Closterovirus.
OX   NCBI_TaxID=478555;
OH   NCBI_TaxID=161934; Beta vulgaris (Sugar beet).
RN   [1]
RP   NUCLEOTIDE SEQUENCE [GENOMIC RNA].
RX   PubMed=1990061; DOI=10.1099/0022-1317-72-1-15;
RA   Agranovsky A.A., Boyko V.P., Karasev A.V., Lunina N.A., Koonin E.V.,
RA   Dolja V.V.;
RT   "Nucleotide sequence of the 3'-terminal half of beet yellows closterovirus
RT   RNA genome: unique arrangement of eight virus genes.";
RL   J. Gen. Virol. 72:15-23(1991).
RN   [2]
RP   NUCLEOTIDE SEQUENCE [GENOMIC RNA].
RX   PubMed=8259666; DOI=10.1006/viro.1994.1034;
RA   Agranovsky A.A., Koonin E.V., Boyko V.P., Maiss E., Froetschl R.,
RA   Lunina N.A., Atabekov J.G.;
RT   "Beet yellows closterovirus: complete genome structure and identification
RT   of a leader papain-like thiol protease.";
RL   Virology 198:311-324(1994).
RN   [3]
RP   FUNCTION, SUBCELLULAR LOCATION, AND INTERACTION WITH HSP70H.
RX   PubMed=12368343; DOI=10.1128/jvi.76.21.11003-11011.2002;
RA   Prokhnevsky A.I., Peremyslov V.V., Napuli A.J., Dolja V.V.;
RT   "Interaction between long-distance transport factor and Hsp70-related
RT   movement protein of Beet yellows virus.";
RL   J. Virol. 76:11003-11011(2002).
RN   [4]
RP   SUBCELLULAR LOCATION.
RX   PubMed=15044703; DOI=10.1073/pnas.0400303101;
RA   Peremyslov V.V., Andreev I.A., Prokhnevsky A.I., Duncan G.H.,
RA   Taliansky M.E., Dolja V.V.;
RT   "Complex molecular architecture of beet yellows virus particles.";
RL   Proc. Natl. Acad. Sci. U.S.A. 101:5030-5035(2004).
CC   -!- FUNCTION: Involved in systemic transport. Necessary for long-distance
CC       transport of the virus through the phloem.
CC       {ECO:0000269|PubMed:12368343}.
CC   -!- SUBUNIT: Interacts with Hsp70h. {ECO:0000269|PubMed:12368343}.
CC   -!- SUBCELLULAR LOCATION: Virion {ECO:0000269|PubMed:12368343,
CC       ECO:0000269|PubMed:15044703}. Note=Integral virion tail component.
CC       Presumably associates with the virion via binding to Hsp70h. Probably
CC       builts the tip segment of the virion tail.
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DR   EMBL; X53462; CAA37555.1; -; Genomic_RNA.
DR   EMBL; X73476; CAA51869.1; -; Genomic_RNA.
DR   PIR; S28716; S28716.
DR   RefSeq; NP_041876.1; NC_001598.1.
DR   GeneID; 1724789; -.
DR   KEGG; vg:1724789; -.
DR   Proteomes; UP000000359; Genome.
PE   1: Evidence at protein level;
KW   Reference proteome; Transport; Virion.
FT   CHAIN           1..180
FT                   /note="20 kDa protein"
FT                   /id="PRO_0000312569"
SQ   SEQUENCE   180 AA;  20418 MW;  DBE004715ECEC442 CRC64;
     MTSSVELAQT KPLFRVLLLK GFVFYVVAFE TEEESSEAEL PLVYLHDFEL NINKRGKIEA
     SYVDFMSCMT RLKPSSVSYT RVSSEKSSED FSLPGSGKTF GSKVLNRKVT FTFENGVQLV
     FGMYGLEQRC VSSDYLWFEN VFVGAHCGTL TYCLNCELDK SGGELEILTF SKNEVLLKRW