ID   G9P_BPF1                Reviewed;          32 AA.
AC   P69537; P03677;
DT   21-JUL-1986, integrated into UniProtKB/Swiss-Prot.
DT   21-JUL-1986, sequence version 1.
DT   29-SEP-2021, entry version 53.
DE   RecName: Full=Tail virion protein G9P;
DE   AltName: Full=Coat protein C, polypeptide II;
DE   AltName: Full=G9P;
GN   Name=IX;
OS   Enterobacteria phage f1 (Bacteriophage f1).
OC   Viruses; Monodnaviria; Loebvirae; Hofneiviricota; Faserviricetes;
OC   Tubulavirales; Inoviridae; Inovirus.
OX   NCBI_TaxID=10863;
OH   NCBI_TaxID=562; Escherichia coli.
RN   [1]
RP   NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RX   PubMed=6282703; DOI=10.1016/0378-1119(81)90059-7;
RA   Beck E., Zink B.;
RT   "Nucleotide sequence and genome organisation of filamentous bacteriophages
RT   f1 and fd.";
RL   Gene 16:35-58(1981).
RN   [2]
RP   NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RX   PubMed=7373712; DOI=10.1128/jvi.34.1.40-50.1980;
RA   Hill D.F., Petersen G.B.;
RT   "Nucleotide sequences in bacteriophage f1 DNA: nucleotide sequence of genes
RT   V, VII, and VIII.";
RL   J. Virol. 34:40-50(1980).
RN   [3]
RP   NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RX   PubMed=6292494; DOI=10.1128/jvi.44.1.32-46.1982;
RA   Hill D.F., Petersen G.B.;
RT   "Nucleotide sequence of bacteriophage f1 DNA.";
RL   J. Virol. 44:32-46(1982).
CC   -!- FUNCTION: May initiate with G7P the virion concomitant assembly-budding
CC       process, by interacting with the packaging signal of the viral genome.
CC       The assembly-budding takes place at the host inner membrane. In turn,
CC       G7P and G9P are present at the end of the filamentous virion that
CC       emerges first from the bacterial host (By similarity). {ECO:0000250}.
CC   -!- SUBCELLULAR LOCATION: Virion {ECO:0000305}. Host membrane
CC       {ECO:0000305}; Single-pass membrane protein {ECO:0000305}. Note=Prior
CC       to assembly, is found associated with the bacterial host inner
CC       membrane. There are about five copies of this protein per mature phage
CC       that are located on the tail side of the filamentous virion with G7P
CC       (By similarity). {ECO:0000250}.
CC   -!- SIMILARITY: Belongs to the inovirus G9P protein family. {ECO:0000305}.
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DR   EMBL; V00606; CAA23870.1; -; Genomic_DNA.
DR   EMBL; J02448; AAA32213.1; -; Genomic_DNA.
DR   PIR; C04279; Z9BPF1.
DR   Proteomes; UP000002557; Genome.
DR   Proteomes; UP000241027; Genome.
DR   GO; GO:0033644; C:host cell membrane; IEA:UniProtKB-SubCell.
DR   GO; GO:0016021; C:integral component of membrane; IEA:UniProtKB-KW.
PE   3: Inferred from homology;
KW   Host membrane; Membrane; Transmembrane; Transmembrane helix; Virion.
FT   CHAIN           1..32
FT                   /note="Tail virion protein G9P"
FT                   /id="PRO_0000098182"
FT   TRANSMEM        8..24
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
SQ   SEQUENCE   32 AA;  3653 MW;  DD10ABA3DD695DCE CRC64;
     MSVLVYSFAS FVLGWCLRSG ITYFTRLMET SS