ID   PR73_MMTVB              Reviewed;         320 AA.
AC   P10260;
DT   01-JUL-1989, integrated into UniProtKB/Swiss-Prot.
DT   01-JUL-1989, sequence version 1.
DT   02-DEC-2020, entry version 60.
DE   RecName: Full=Protein PR73;
OS   Mouse mammary tumor virus (strain BR6) (MMTV).
OC   Viruses; Riboviria; Pararnavirae; Artverviricota; Revtraviricetes;
OC   Ortervirales; Retroviridae; Orthoretrovirinae; Betaretrovirus.
OX   NCBI_TaxID=11758;
OH   NCBI_TaxID=10090; Mus musculus (Mouse).
RN   [1]
RP   NUCLEOTIDE SEQUENCE [GENOMIC RNA].
RX   PubMed=3027377; DOI=10.1128/jvi.61.2.480-490.1987;
RA   Moore R., Dixon M., Smith R., Peters G., Dickson C.;
RT   "Complete nucleotide sequence of a milk-transmitted mouse mammary tumor
RT   virus: two frameshift suppression events are required for translation of
RT   gag and pol.";
RL   J. Virol. 61:480-490(1987).
CC   -!- FUNCTION: Superantigen. {ECO:0000250}.
CC   -!- SUBCELLULAR LOCATION: Membrane {ECO:0000305}; Single-pass type II
CC       membrane protein {ECO:0000305}.
CC   -!- MISCELLANEOUS: This protein is coded in the long terminal repeat (LTR).
CC   -!- SIMILARITY: Belongs to the mouse mammary tumor virus PR73 superantigen
CC       family. {ECO:0000305}.
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DR   EMBL; M15122; AAA46545.1; -; Genomic_RNA.
DR   PIR; E26795; E26795.
DR   RefSeq; NP_056884.1; NC_001503.1.
DR   SMR; P10260; -.
DR   GeneID; 1491863; -.
DR   KEGG; vg:1491863; -.
DR   Proteomes; UP000228400; Genome.
DR   GO; GO:0016021; C:integral component of membrane; IEA:UniProtKB-KW.
DR   InterPro; IPR001213; MMTV_SAg.
DR   Pfam; PF01054; MMTV_SAg; 1.
PE   3: Inferred from homology;
KW   Glycoprotein; Membrane; Reference proteome; Signal-anchor; Superantigen;
KW   Transmembrane; Transmembrane helix.
FT   CHAIN           1..320
FT                   /note="Protein PR73"
FT                   /id="PRO_0000125500"
FT   TOPO_DOM        1..44
FT                   /note="Cytoplasmic"
FT                   /evidence="ECO:0000255"
FT   TRANSMEM        45..65
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   TOPO_DOM        66..319
FT                   /note="Extracellular"
FT                   /evidence="ECO:0000255"
FT   CARBOHYD        79
FT                   /note="N-linked (GlcNAc...) asparagine; by host"
FT                   /evidence="ECO:0000255"
FT   CARBOHYD        89
FT                   /note="N-linked (GlcNAc...) asparagine; by host"
FT                   /evidence="ECO:0000255"
FT   CARBOHYD        93
FT                   /note="N-linked (GlcNAc...) asparagine; by host"
FT                   /evidence="ECO:0000255"
FT   CARBOHYD        131
FT                   /note="N-linked (GlcNAc...) asparagine; by host"
FT                   /evidence="ECO:0000255"
FT   CARBOHYD        146
FT                   /note="N-linked (GlcNAc...) asparagine; by host"
FT                   /evidence="ECO:0000255"
SQ   SEQUENCE   320 AA;  36854 MW;  DAAA962451C46566 CRC64;
     MPRLQQKWLN SRECPTLRGE AAKGLFPTKD DPSAHKRMSP SDKDILILCC KLGIALLCLG
     LLGEVAVRAR RALTLDSFNS SSVQDYNLND SENSTFLLRQ GPQPTSSYKP HQPCPSEIEI
     RMLAKNYIFT NKTNPIGRLL VTMLRNESLP FSTIFTQIQR LEMGIENRKR HSTSVEEQVQ
     GLRASGLEVK RGKRSALVKI GDRWWQPGTY RGPYIYRPTD APLPYTGRYD LNFDRWVTVN
     GYKVLYRSLS FRERLARARP PWCMLTQEEK NDMKQQVHDY IYLGTGMSSI WGKIFHTKER
     TVAALIEHYS AKTYGMSYYD