ID   PORTL_BPKVM             Reviewed;         511 AA.
AC   Q6WHE6;
DT   01-APR-2015, integrated into UniProtKB/Swiss-Prot.
DT   05-JUL-2004, sequence version 1.
DT   23-FEB-2022, entry version 54.
DE   RecName: Full=Portal protein {ECO:0000255|HAMAP-Rule:MF_04114};
DE   AltName: Full=gp20 {ECO:0000255|HAMAP-Rule:MF_04114};
GN   Name=20 {ECO:0000312|EMBL:AAQ64427.1};
GN   OrderedLocusNames=KVP40.0358 {ECO:0000312|EMBL:AAQ64427.1};
OS   Vibrio phage KVP40 (isolate Vibrio parahaemolyticus/Japan/Matsuzaki/1991)
OS   (KVP40) (Bacteriophage KVP40).
OC   Viruses; Duplodnaviria; Heunggongvirae; Uroviricota; Caudoviricetes;
OC   Caudovirales; Myoviridae; Tevenvirinae; Schizotequatrovirus.
OX   NCBI_TaxID=1283340 {ECO:0000312|Proteomes:UP000001785};
OH   NCBI_TaxID=670; Vibrio parahaemolyticus.
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=Isolate Vibrio parahaemolyticus/Japan/Matsuzaki /1991
RC   {ECO:0000312|Proteomes:UP000001785};
RX   PubMed=12923095; DOI=10.1128/jb.185.17.5220-5233.2003;
RA   Miller E.S., Heidelberg J.F., Eisen J.A., Nelson W.C., Durkin A.S.,
RA   Ciecko A., Feldblyum T.V., White O., Paulsen I.T., Nierman W.C., Lee J.,
RA   Szczypinski B., Fraser C.M.;
RT   "Complete genome sequence of the broad-host-range vibriophage KVP40:
RT   comparative genomics of a T4-related bacteriophage.";
RL   J. Bacteriol. 185:5220-5233(2003).
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       Binds to the terminase subunits to form the packaging machine.
CC       {ECO:0000255|HAMAP-Rule:MF_04114}.
CC   -!- SUBUNIT: Homododecamer. Interacts with the large terminase subunit.
CC       Interacts with the major capsid protein. Interacts with the capsid
CC       vertex protein. {ECO:0000255|HAMAP-Rule:MF_04114}.
CC   -!- SUBCELLULAR LOCATION: Virion {ECO:0000255|HAMAP-Rule:MF_04114}.
CC       Note=Located at a unique 5-fold vertex of the icosahedral capsid.
CC       {ECO:0000255|HAMAP-Rule:MF_04114}.
CC   -!- SIMILARITY: Belongs to the Tevenvirinae portal protein family.
CC       {ECO:0000255|HAMAP-Rule:MF_04114}.
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DR   EMBL; AY283928; AAQ64427.1; -; Genomic_DNA.
DR   RefSeq; NP_899604.1; NC_005083.2.
DR   SMR; Q6WHE6; -.
DR   GeneID; 2546036; -.
DR   KEGG; vg:2546036; -.
DR   Proteomes; UP000001785; Genome.
DR   GO; GO:0019028; C:viral capsid; IEA:UniProtKB-UniRule.
DR   GO; GO:0099000; P:viral genome ejection through host cell envelope, contractile tail mechanism; IEA:UniProtKB-UniRule.
DR   GO; GO:0019072; P:viral genome packaging; IEA:UniProtKB-UniRule.
DR   GO; GO:0019076; P:viral release from host cell; IEA:UniProtKB-UniRule.
DR   HAMAP; MF_04114; PORTAL_T4; 1.
DR   InterPro; IPR010823; Portal_Gp20.
DR   Pfam; PF07230; Portal_Gp20; 1.
PE   3: Inferred from homology;
KW   Capsid protein; Late protein; Reference proteome; Viral capsid assembly;
KW   Viral contractile tail ejection system;
KW   Viral genome ejection through host cell envelope; Viral genome packaging;
KW   Viral penetration into host cytoplasm; Viral release from host cell;
KW   Virion; Virus entry into host cell.
FT   CHAIN           1..511
FT                   /note="Portal protein"
FT                   /id="PRO_0000432533"
SQ   SEQUENCE   511 AA;  59423 MW;  E53AC638B0976B80 CRC64;
     MKFWTKEEEQ DIQKIEKNPV RSFSAPDNVD GAKEIHTNLL APQLGHAIIP SDAQSEGTIP
     VKELIKSYRA LAEYHEVDDA IQEIVDEAIV YENDKEVVWL NLDNTDFSEN IKAKINEEFD
     RVVSLLQMRK HGYKWFRKWY VDSRIYFHKI LDKDNNIIEL RPLNPMKMEL VREIQKETID
     GVEVVKGTLE YYVYKQSDYK MPSWMSATNR AQTSFRIPKD AIVFAHSGLM RGCADDPYII
     GYLDRAIKPA NQLKMLEDAL VIYRLARAPE RRVFYVDVGN LPTQKAQQYV NGIMQNVKNR
     VVYDTQTGQV KNTTNAMSML EDYYLPRREG SKGTEVSTLP GGQSLGDIED VLYFNRKLYK
     AMRIPTSRAA SEDQTGGINF GQGAEITRDE LKFTKFVKRL QTKFETVITD PLKHQLIVNN
     IITEEEWDAN HEKLYVVFNQ DSYFEEAKEL EILNSRMNAM RDIQDYAGKY YSHKYIQKNI
     LRLSDDQITA MQSEIDEEET NPRFQQDDQG F