ID   TUBE_BPT6               Reviewed;         163 AA.
AC   Q38435;
DT   15-JUL-1999, integrated into UniProtKB/Swiss-Prot.
DT   01-NOV-1996, sequence version 1.
DT   23-FEB-2022, entry version 60.
DE   RecName: Full=Tail tube protein gp19;
DE   AltName: Full=Gene product 19;
DE            Short=gp19;
GN   Name=19;
OS   Enterobacteria phage T6 (Bacteriophage T6).
OC   Viruses; Duplodnaviria; Heunggongvirae; Uroviricota; Caudoviricetes;
OC   Caudovirales; Myoviridae; Tevenvirinae; Tequatrovirus;
OC   Enterobacteria virus T6.
OX   NCBI_TaxID=10666;
OH   NCBI_TaxID=562; Escherichia coli.
RN   [1]
RP   NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RX   PubMed=8076614; DOI=10.1002/j.1460-2075.1994.tb06736.x;
RA   Repoila F., Tetart F., Bouet J.-Y., Krisch H.M.;
RT   "Genomic polymorphism in the T-even bacteriophages.";
RL   EMBO J. 13:4181-4192(1994).
CC   -!- FUNCTION: Structural component of the bacteriophage tail which consists
CC       of a contractile sheath, a tube and a baseplate. The central
CC       cylindrical segment of the tail consists of a rigid tube, composed of
CC       multiple copies of the tail tube protein. During infection, contraction
CC       of the sheath drives the central tube through the host outer membrane,
CC       creating a channel for DNA ejection from the capsid into the host cell.
CC       {ECO:0000250|UniProtKB:P13333}.
CC   -!- SUBCELLULAR LOCATION: Virion {ECO:0000250|UniProtKB:P13333}.
CC   -!- SIMILARITY: Belongs to the T4-like viruses Gp19 protein family.
CC       {ECO:0000305}.
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DR   EMBL; Z35072; CAA84444.1; -; Genomic_DNA.
DR   SMR; Q38435; -.
DR   GO; GO:0098026; C:virus tail, tube; IEA:UniProtKB-KW.
DR   GO; GO:0005198; F:structural molecule activity; IEA:InterPro.
DR   GO; GO:0099000; P:viral genome ejection through host cell envelope, contractile tail mechanism; IEA:UniProtKB-KW.
DR   InterPro; IPR010667; Phage_T4_Gp19.
DR   Pfam; PF06841; Phage_T4_gp19; 1.
PE   3: Inferred from homology;
KW   Late protein; Viral contractile tail ejection system;
KW   Viral genome ejection through host cell envelope;
KW   Viral penetration into host cytoplasm; Viral tail protein;
KW   Viral tail tube protein; Virion; Virus entry into host cell.
FT   CHAIN           1..163
FT                   /note="Tail tube protein gp19"
FT                   /id="PRO_0000165009"
SQ   SEQUENCE   163 AA;  18450 MW;  DE540416356FDC80 CRC64;
     MFVDDVTRAF ESGDFARPNL FQVEISYLGQ NFTFQCKATA LPAGIVEKIP VGFMNRKIND
     AGDRTFDDWT VTVMNDEAHD ARQKFVDWQS IAAGQGNEIT GGKPAEYKKS AVVRQYARDA
     KTVTKEVEIK GLWPTNVGEL QLDWDSNNEI QTFEVTLALD YWE