ID   PORTL_BPBPP             Reviewed;         555 AA.
AC   Q775C3;
DT   29-APR-2015, integrated into UniProtKB/Swiss-Prot.
DT   05-JUL-2004, sequence version 1.
DT   29-SEP-2021, entry version 42.
DE   RecName: Full=Probable portal protein {ECO:0000305};
DE   AltName: Full=Gene product 21 {ECO:0000305};
DE            Short=gp21;
DE   AltName: Full=Head-to-tail connector {ECO:0000305};
GN   Name=bbp21 {ECO:0000312|EMBL:AAR97687.1};
OS   Bordetella phage BPP-1.
OC   Viruses; Duplodnaviria; Heunggongvirae; Uroviricota; Caudoviricetes;
OC   Caudovirales; Podoviridae; Rauchvirus.
OX   NCBI_TaxID=194699 {ECO:0000312|Proteomes:UP000001765};
OH   NCBI_TaxID=518; Bordetella bronchiseptica (Alcaligenes bronchisepticus).
RN   [1]
RP   NUCLEOTIDE SEQUENCE [GENOMIC DNA], AND FUNCTION.
RX   PubMed=14973019; DOI=10.1128/jb.186.5.1503-1517.2004;
RA   Liu M., Gingery M., Doulatov S.R., Liu Y., Hodes A., Baker S., Davis P.,
RA   Simmonds M., Churcher C., Mungall K., Quail M.A., Preston A., Harvill E.T.,
RA   Maskell D.J., Eiserling F.A., Parkhill J., Miller J.F.;
RT   "Genomic and genetic analysis of Bordetella bacteriophages encoding reverse
RT   transcriptase-mediated tropism-switching cassettes.";
RL   J. Bacteriol. 186:1503-1517(2004).
CC   -!- FUNCTION: Forms the portal vertex of the capsid. This portal plays
CC       critical roles in head assembly, genome packaging, neck/tail
CC       attachment, and genome ejection. The portal protein multimerizes as a
CC       single ring-shaped homododecamer arranged around a central channel.
CC       {ECO:0000305|PubMed:14973019}.
CC   -!- SUBUNIT: Homododecamer. {ECO:0000250|UniProtKB:P03728}.
CC   -!- SUBCELLULAR LOCATION: Virion {ECO:0000250|UniProtKB:P03728}.
CC   -!- SIMILARITY: Belongs to the podoviridae head-to-tail connector protein
CC       family. {ECO:0000305}.
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DR   EMBL; AY029185; AAR97687.1; -; Genomic_DNA.
DR   RefSeq; NP_958690.1; NC_005357.1.
DR   GeneID; 2717198; -.
DR   KEGG; vg:2717198; -.
DR   Proteomes; UP000001765; Genome.
DR   GO; GO:0099002; P:viral genome ejection through host cell envelope, short tail mechanism; IEA:UniProtKB-KW.
DR   InterPro; IPR020991; Connector_podovirus.
DR   Pfam; PF12236; Head-tail_con; 1.
PE   3: Inferred from homology;
KW   Late protein; Reference proteome; Viral capsid assembly;
KW   Viral genome ejection through host cell envelope; Viral genome packaging;
KW   Viral penetration into host cytoplasm; Viral release from host cell;
KW   Viral short tail ejection system; Virion; Virus entry into host cell.
FT   CHAIN           1..555
FT                   /note="Probable portal protein"
FT                   /id="PRO_0000432924"
SQ   SEQUENCE   555 AA;  61942 MW;  7C0248BF8E90D440 CRC64;
     MAEQTERKLL LSRWGQLRTE RESWMSHWKE ISDYLLPRAG RFFVQDRNRG EKRHNNILDN
     TGTRALRVLA AGMMAGMTSP ARPWFRLTTS IPELDESAAV KAWLANVTRL MLMIFAKSNT
     YRALHSMYEE LGAFGTASSI VLPDFDAVVY HHSLTAGEYA IAADNQGRVN TLYREFQITV
     AQMVREFGKD KCSTTVQSLF DRGALEQWVT VIHAIEPRAD RDPSKRDDRN MAWKSVYFEP
     GADETRTLRE SGYRSFRALC PRWALVGGDI YGNSPAMEAL GDVRQLQHEQ LRKAQAIDYK
     SNPPLQLPVS AKNQDISTVP GGLSYVDAAA PNGGIRTAFE VNLDLSHLLA DIVDVRERIK
     ASFYADLFLM LANGTNPQMT ATEVAERHEE KLLMLGPVLE RMHNEILDPL IELTFQRMVE
     ANILPPPPQE MQGVDLNVEF VSMLAQAQRA IATNSVDRFV GNLGAVAGIK PEVLDKFDAD
     RWADTYADML GIDPELIVPG NQVALIRKQR ADQQQAAQQA ALLNQGADTA AKLGSVDTSK
     QNALTDVTRA FSGYT