ID   PORTL_BPSP6             Reviewed;         515 AA.
AC   Q7Y5P0;
DT   01-APR-2015, integrated into UniProtKB/Swiss-Prot.
DT   01-OCT-2003, sequence version 1.
DT   23-FEB-2022, entry version 51.
DE   RecName: Full=Portal protein {ECO:0000305};
DE   AltName: Full=Head-to-tail connector {ECO:0000305};
GN   Name=30 {ECO:0000312|EMBL:AAP48769.1};
OS   Enterobacteria phage SP6 (Bacteriophage SP6).
OC   Viruses; Duplodnaviria; Heunggongvirae; Uroviricota; Caudoviricetes;
OC   Caudovirales; Autographiviridae; Molineuxvirinae; Zindervirus.
OX   NCBI_TaxID=194966 {ECO:0000312|Proteomes:UP000001721};
OH   NCBI_TaxID=90371; Salmonella typhimurium.
RN   [1]
RP   NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RX   PubMed=15028677; DOI=10.1128/jb.186.7.1933-1944.2004;
RA   Dobbins A.T., George M. Jr., Basham D.A., Ford M.E., Houtz J.M.,
RA   Pedulla M.L., Lawrence J.G., Hatfull G.F., Hendrix R.W.;
RT   "Complete genomic sequence of the virulent Salmonella bacteriophage SP6.";
RL   J. Bacteriol. 186:1933-1944(2004).
RN   [2]
RP   NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RX   PubMed=14729334; DOI=10.1016/j.jmb.2003.11.035;
RA   Scholl D., Kieleczawa J., Kemp P., Rush J., Richardson C.C., Merril C.,
RA   Adhya S., Molineux I.J.;
RT   "Genomic analysis of bacteriophages SP6 and K1-5, an estranged subgroup of
RT   the T7 supergroup.";
RL   J. Mol. Biol. 335:1151-1171(2004).
RN   [3]
RP   NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RA   Tseng T.Y., Frick D.N., Richardson C.C.;
RL   Submitted (JUN-1999) to the EMBL/GenBank/DDBJ databases.
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:0000250|UniProtKB:P03728}.
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; AY288927; AAP48769.1; -; Genomic_DNA.
DR   EMBL; AY370673; AAR90021.1; -; Genomic_DNA.
DR   RefSeq; NP_853590.1; NC_004831.2.
DR   SMR; Q7Y5P0; -.
DR   PRIDE; Q7Y5P0; -.
DR   GeneID; 1481798; -.
DR   KEGG; vg:1481798; -.
DR   Proteomes; UP000000843; Genome.
DR   Proteomes; UP000001721; Genome.
DR   GO; GO:0019028; C:viral capsid; IEA:UniProtKB-KW.
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   Capsid 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..515
FT                   /note="Portal protein"
FT                   /id="PRO_0000432543"
SQ   SEQUENCE   515 AA;  57903 MW;  2B24075B1246412B CRC64;
     MQDTILEYGG QRSKIPKLWE KFSKKRSPYL DRAKHFAKLT LPYLMNNKGD NETSQNGWQG
     VGAQATNHLA NKLAQVLFPA QRSFFRVDLT AKGEKVLDDR GLKKTQLATI FARVETTAMK
     ALEQRQFRPA IVEVFKHLIV AGNCLLYKPS KGAMSAVPMH HYVVNRDTNG DLMDVILLQE
     KALRTFDPAT RMAIEVGMKG KKCKEDDNVK LYTHAQYAGE GFWKINQSAD DIPVGKESRI
     KSEKLPFIPL TWKRSYGEDW GRPLAEDYSG DLFVIQFLSE AMARGAALMA DIKYLIRPGS
     QTDVDHFVNS GTGEVITGVA EDIHIVQLGK YADLTPISAV LEVYTRRIGV IFMMETMTRR
     DAERVTAVEI QRDALEIEQN MGGVYSLFAM TMQTPIAMWG LQEAGDSFTS ELVDPVIVTG
     IEALGRMAEL DKLANFAQYM SLPQTWPEPA QRAIRWGDYM DWVRGQISAE LPFLKSEEEM
     QQEMAQQAQA QQEAMLNEGV AKAVPGVIQQ EMKEG