ID   HCP2_BPLP2              Reviewed;         112 AA.
AC   D3WAC8;
DT   02-NOV-2016, integrated into UniProtKB/Swiss-Prot.
DT   20-APR-2010, sequence version 1.
DT   29-SEP-2021, entry version 15.
DE   RecName: Full=Probable head completion protein 2 {ECO:0000303|PubMed:24027307};
DE   AltName: Full=Connector protein gp9 {ECO:0000305};
DE   AltName: Full=Gene product 9 {ECO:0000305};
DE            Short=gp9 {ECO:0000305};
DE   AltName: Full=Stopper protein gp9 {ECO:0000303|PubMed:24027307};
OS   Lactococcus phage p2 (Lactococcus lactis bacteriophage p2).
OC   Viruses; Duplodnaviria; Heunggongvirae; Uroviricota; Caudoviricetes;
OC   Caudovirales; Siphoviridae; Skunavirus.
OX   NCBI_TaxID=254252;
OH   NCBI_TaxID=1358; Lactococcus lactis.
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RA   Tremblay D.M., Deveau H., Moineau S.;
RT   "Complete genomic sequence of Lactococcus lactis phage p2.";
RL   Submitted (FEB-2010) to the EMBL/GenBank/DDBJ databases.
RN   [2]
RP   STRUCTURE BY ELECTRON MICROSCOPY (21 ANGSTROMS) OF THE CONNECTOR, FUNCTION,
RP   AND SUBCELLULAR LOCATION.
RX   PubMed=24027307; DOI=10.1128/jvi.02033-13;
RA   Bebeacua C., Tremblay D., Farenc C., Chapot-Chartier M.P., Sadovskaya I.,
RA   van Heel M., Veesler D., Moineau S., Cambillau C.;
RT   "Structure, adsorption to host, and infection mechanism of virulent
RT   lactococcal phage p2.";
RL   J. Virol. 87:12302-12312(2013).
CC   -!- FUNCTION: Probably functions as a stopper that is part of the head-tail
CC       connector and that locks the viral DNA in the capsid. During assembly,
CC       functions as a docking platform which the preassembled tail can bind
CC       to. Plays a role in morphogenesis of the virion capsid after genome
CC       packaging. {ECO:0000305|PubMed:24027307}.
CC   -!- SUBCELLULAR LOCATION: Virion {ECO:0000269|PubMed:24027307}. Note=Part
CC       of the connector between the portal and the tail.
CC       {ECO:0000269|PubMed:24027307}.
CC   -!- SIMILARITY: Belongs to the skunalikevirus head completion protein 2
CC       family. {ECO:0000305}.
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DR   EMBL; GQ979703; ADC80085.1; -; Genomic_DNA.
DR   Proteomes; UP000002348; Genome.
DR   GO; GO:0099001; P:viral genome ejection through host cell envelope, long flexible tail mechanism; IEA:UniProtKB-KW.
PE   1: Evidence at protein level;
KW   Reference proteome; Viral capsid assembly;
KW   Viral genome ejection through host cell envelope;
KW   Viral long flexible tail ejection system;
KW   Viral penetration into host cytoplasm; Viral release from host cell;
KW   Virion; Virus entry into host cell.
FT   CHAIN           1..112
FT                   /note="Probable head completion protein 2"
FT                   /id="PRO_0000438230"
SQ   SEQUENCE   112 AA;  12737 MW;  942E3B4E3CBF711F CRC64;
     MEFDSYIDWY NNLLTMPLND VILGVKDTIE DKTVYLSLSD SKVIKMDNTS FVMGYYYQVV
     LSVKDVDDEL VGLVGNVLQN GWNMTNWSEN SHLYNYTGTV YLPCGAGGQA WQ