ID   TUBE_BPSK9              Reviewed;         177 AA.
AC   P85992; B9A7C0;
DT   23-SEP-2008, integrated into UniProtKB/Swiss-Prot.
DT   02-MAR-2010, sequence version 2.
DT   23-FEB-2022, entry version 23.
DE   RecName: Full=Tail tube protein {ECO:0000312|EMBL:BAH15166.1};
DE   AltName: Full=Virion protein F {ECO:0000303|PubMed:19087204};
OS   Serratia phage KSP90 (Serratia marcescens bacteriophage KSP90).
OC   Viruses; Duplodnaviria; Heunggongvirae; Uroviricota; Caudoviricetes;
OC   Caudovirales; Myoviridae.
OX   NCBI_TaxID=552528;
OH   NCBI_TaxID=615; Serratia marcescens.
RN   [1] {ECO:0000305, ECO:0000312|EMBL:BAH15166.1}
RP   NUCLEOTIDE SEQUENCE [GENOMIC DNA], AND PROTEIN SEQUENCE OF 2-21.
RX   PubMed=19087204; DOI=10.1111/j.1574-6968.2008.01455.x;
RA   Matsushita K., Uchiyama J., Kato S., Ujihara T., Hoshiba H., Sugihara S.,
RA   Muraoka A., Wakiguchi H., Matsuzaki S.;
RT   "Morphological and genetic analysis of three bacteriophages of Serratia
RT   marcescens isolated from environmental water.";
RL   FEMS Microbiol. Lett. 291:201-208(2009).
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:0000269|PubMed:19087204}.
CC   -!- SIMILARITY: Belongs to the T4-like viruses Gp19 protein family.
CC       {ECO:0000305}.
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DR   EMBL; AB452990; BAH15166.1; -; Genomic_DNA.
DR   SMR; P85992; -.
DR   GO; GO:0098026; C:virus tail, tube; IEA:UniProtKB-KW.
DR   GO; GO:0099000; P:viral genome ejection through host cell envelope, contractile tail mechanism; IEA:UniProtKB-KW.
PE   1: Evidence at protein level;
KW   Direct protein sequencing; Late protein;
KW   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   INIT_MET        1
FT                   /note="Removed"
FT                   /evidence="ECO:0000269|PubMed:19087204"
FT   CHAIN           2..177
FT                   /note="Tail tube protein"
FT                   /evidence="ECO:0000269|PubMed:19087204"
FT                   /id="PRO_0000351158"
SQ   SEQUENCE   177 AA;  19948 MW;  E52994239217C0EF CRC64;
     MATVNEFRGA MSRGGGVQRQ HRWRVTISFP SFAASADQTR DVCLLAVTTN TPTGQLGEIL
     VPWGGRELPF PGDRRFEALP ITFINVVNNG PYNSMEVWQQ YINGSESNRA SANPDEYFRD
     VVLELLDAND NVTKTWTLQG AWPQNLGQLE LDMSAMDSYT QFTCDLRYFQ AVSDRSR