ID   PORTL_BPE15             Reviewed;         556 AA.
AC   Q858H1;
DT   01-APR-2015, integrated into UniProtKB/Swiss-Prot.
DT   01-JUN-2003, sequence version 1.
DT   02-JUN-2021, entry version 44.
DE   RecName: Full=Portal protein {ECO:0000305};
DE   AltName: Full=Head-to-tail connector {ECO:0000305};
OS   Salmonella phage epsilon15.
OC   Viruses; Duplodnaviria; Heunggongvirae; Uroviricota; Caudoviricetes;
OC   Caudovirales; Podoviridae; Uetakevirus.
OX   NCBI_TaxID=215158 {ECO:0000312|Proteomes:UP000001770};
OH   NCBI_TaxID=58712; Salmonella anatum.
RN   [1]
RP   NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RX   PubMed=17825342; DOI=10.1016/j.virol.2007.07.027;
RA   Kropinski A.M., Kovalyova I.V., Billington S.J., Patrick A.N., Butts B.D.,
RA   Guichard J.A., Pitcher T.J., Guthrie C.C., Sydlaske A.D., Barnhill L.M.,
RA   Havens K.A., Day K.R., Falk D.R., McConnell M.R.;
RT   "The genome of epsilon15, a serotype-converting, Group E1 Salmonella
RT   enterica-specific bacteriophage.";
RL   Virology 369:234-244(2007).
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; AY150271; AAO06067.1; -; Genomic_DNA.
DR   RefSeq; NP_848212.1; NC_004775.1.
DR   GeneID; 2641872; -.
DR   KEGG; vg:2641872; -.
DR   Proteomes; UP000001770; 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..556
FT                   /note="Portal protein"
FT                   /id="PRO_0000432545"
FT   REGION          527..556
FT                   /note="Disordered"
FT                   /evidence="ECO:0000256|SAM:MobiDB-lite"
FT   COMPBIAS        529..556
FT                   /note="Polar residues"
FT                   /evidence="ECO:0000256|SAM:MobiDB-lite"
SQ   SEQUENCE   556 AA;  61657 MW;  9DA898B4700D20E5 CRC64;
     MAETEKERLL KQLAQLKNER TSFESHWLDL SDFINPRGSR FLTSDVNRDD RRNTKIVDPT
     GSMAQRILSS GMMSGITSPA RPWFKLATPD PDMMDYGPVK IWLEVVQRRM NEVFNKSNLY
     QSLPVMYASL GTFGTGAMAV MEDDQDVIRT MPFPIGSYYL ANSPRGSVDT CIRQFSMTVR
     QMVQEFGLDN VSTSVKGMWE NGTYETWVEV NHCITPNVNR DSGKMDSKNK PYRSVYFESG
     GDSDKLLRES GFDEFPILAP RWEVNGEDVY ASSCPGMLAL GQVKALQVEQ KRKAQLIDKA
     TNPPMVAPTS LKNQRVSLLP GDVTYLDVIS GQDGFKPAYL VNPNTADLLA DIQDTRQTIN
     SAYFVDLFMM LQNINTRSMP VEAVIEMKEE KLLMLGPVLE RLNDEALNPL IDRVFSIMAR
     KNMLPEPPDV LQGMPLRIEY ISVMAQAQKS IGLTSLSQTV GFIGQLAQFK PEALDKLDVD
     QAIDAFSEMS GVSPTVIVPQ EQVQGIREER AKQAQAAQAM AMGQAAAQGA KTLSETQTSD
     PSALTAIANA AGAPQQ