ID   G9P_BPM13               Reviewed;          32 AA.
AC   P69538; 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 M13 (Bacteriophage M13).
OC   Viruses; Monodnaviria; Loebvirae; Hofneiviricota; Faserviricetes;
OC   Tubulavirales; Inoviridae; Inovirus.
OX   NCBI_TaxID=1977402;
OH   NCBI_TaxID=562; Escherichia coli.
RN   [1]
RP   NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RX   PubMed=6254849; DOI=10.1016/0378-1119(80)90093-1;
RA   van Wezenbeek P.M.G.F., Hulsebos T.J.M., Schoenmakers J.G.G.;
RT   "Nucleotide sequence of the filamentous bacteriophage M13 DNA genome:
RT   comparison with phage fd.";
RL   Gene 11:129-148(1980).
RN   [2]
RP   CHARACTERIZATION.
RX   PubMed=6945579; DOI=10.1073/pnas.78.7.4194;
RA   Simons G.F.M., Konings R.N.H., Schoenmakers J.G.G.;
RT   "Genes VI, VII, and IX of phage M13 code for minor capsid proteins of the
RT   virion.";
RL   Proc. Natl. Acad. Sci. U.S.A. 78:4194-4198(1981).
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.
CC   -!- SUBCELLULAR LOCATION: Virion. Host membrane {ECO:0000305}; Single-pass
CC       membrane protein {ECO:0000305}. Note=Prior to assembly, is found
CC       associated with the bacterial host inner membrane. There are about five
CC       copies of this protein per mature phage that are located on the tail
CC       side of the filamentous virion with G7P (By similarity). {ECO:0000250}.
CC   -!- SIMILARITY: Belongs to the inovirus G9P protein family. {ECO:0000305}.
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DR   EMBL; V00604; CAA23860.1; -; Genomic_DNA.
DR   PIR; B04279; Z9BPM3.
DR   Proteomes; UP000002111; 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   1: Evidence at protein level;
KW   Host membrane; Membrane; Reference proteome; Transmembrane;
KW   Transmembrane helix; Virion.
FT   CHAIN           1..32
FT                   /note="Tail virion protein G9P"
FT                   /id="PRO_0000098183"
FT   TRANSMEM        2..24
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
SQ   SEQUENCE   32 AA;  3653 MW;  DD10ABA3DD695DCE CRC64;
     MSVLVYSFAS FVLGWCLRSG ITYFTRLMET SS