ID   DIT9_BPPZA              Reviewed;         599 AA.
AC   P07534;
DT   01-APR-1988, integrated into UniProtKB/Swiss-Prot.
DT   01-APR-1988, sequence version 1.
DT   23-FEB-2022, entry version 58.
DE   RecName: Full=Tail knob protein gp9 {ECO:0000250|UniProtKB:P04331};
DE   AltName: Full=Distal tube protein {ECO:0000250|UniProtKB:P04331};
DE   AltName: Full=Gene product 9 {ECO:0000250|UniProtKB:P04331};
DE            Short=gp9 {ECO:0000250|UniProtKB:P04331};
DE   AltName: Full=Protein p9 {ECO:0000250|UniProtKB:P04331};
GN   Name=9;
OS   Bacillus phage PZA (Bacteriophage PZA).
OC   Viruses; Duplodnaviria; Heunggongvirae; Uroviricota; Caudoviricetes;
OC   Caudovirales; Salasmaviridae; Picovirinae; Salasvirus; Bacillus virus PZA.
OX   NCBI_TaxID=10757;
OH   NCBI_TaxID=1423; Bacillus subtilis.
RN   [1]
RP   NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RX   PubMed=3095188; DOI=10.1016/0378-1119(86)90048-x;
RA   Paces V., Vlcek C., Urbanek P.;
RT   "Nucleotide sequence of the late region of Bacillus subtilis phage PZA, a
RT   close relative of phi 29.";
RL   Gene 44:107-114(1986).
CC   -!- FUNCTION: Distal (knob) tail protein that plugs the end of the tube
CC       before DNA ejection and forms a channel perforating the host membrane
CC       during ejection. {ECO:0000250|UniProtKB:P04331}.
CC   -!- SUBUNIT: Homohexamer; forms a hexameric tube structure with six
CC       flexible hydrophobic loops. {ECO:0000250|UniProtKB:P04331}.
CC   -!- SUBCELLULAR LOCATION: Virion {ECO:0000250|UniProtKB:P04331}.
CC       Note=Present in 6 copies in the virion. Located at the tip of the tail
CC       and constitutes most of the tail knob. {ECO:0000250|UniProtKB:P04331}.
CC   -!- SIMILARITY: Belongs to the picovirinae distal tube protein family.
CC       {ECO:0000305}.
CC   ---------------------------------------------------------------------------
CC   Copyrighted by the UniProt Consortium, see https://www.uniprot.org/terms
CC   Distributed under the Creative Commons Attribution (CC BY 4.0) License
CC   ---------------------------------------------------------------------------
DR   EMBL; M11813; AAA88486.1; -; Genomic_DNA.
DR   PIR; D24831; WMBP9Z.
DR   SMR; P07534; -.
DR   Proteomes; UP000000855; Genome.
DR   GO; GO:0098026; C:virus tail, tube; IEA:UniProtKB-KW.
DR   GO; GO:0044694; P:pore-mediated entry of viral genome into host cell; IEA:UniProtKB-KW.
DR   GO; GO:0099002; P:viral genome ejection through host cell envelope, short tail mechanism; IEA:UniProtKB-KW.
DR   InterPro; IPR031772; Caud_tail_N.
DR   Pfam; PF16838; Caud_tail_N; 1.
PE   3: Inferred from homology;
KW   Late protein; Pore-mediated penetration of viral genome into host cell;
KW   Viral genome ejection through host cell envelope;
KW   Viral penetration into host cytoplasm; Viral short tail ejection system;
KW   Viral tail protein; Viral tail tube protein; Virion;
KW   Virus entry into host cell.
FT   CHAIN           1..599
FT                   /note="Tail knob protein gp9"
FT                   /id="PRO_0000106584"
SQ   SEQUENCE   599 AA;  67668 MW;  D94FDEA154D46F67 CRC64;
     MAYVPLSGTN VRILADVPFS NDYKNTRWFT SSSNQYNWFN SKTRVYEMSK VTFQGFRENK
     SYISVSLRLD LLYNASYIMF QNADYGNKWF YAFVTELEYK NVGTTYVHFE IDVLQTWMFN
     IKFQESFIVR EHVKLWNDDG TPTINTIDEG LNYGSEYDIV SVENHRPYDD MMFLVVISKS
     IMHGTAGEAE SRLNDINASL NGMPQPLCYY IHPFYKDGKV PKTFIGDNNA NLSPIVNMLT
     NIFSQKSAVN NIVNMYVTDY IGLKLDYKNG DKELKLDKDM FEQAGIADDK HGNVDTIFVK
     KIPDYETLEI DTGDKWGGFT KDQESKLMMY PYCVTEVTDF KGNHMNLKTE YIDNNKLKIQ
     VRGSLGVSNK VAYSIQDYNA GGSLSGGDRL TASLDTSLIN NNPNDIAIIN DYLSAYLQGN
     KNSLENQKSS ILFNGIVGML GGGVSAGASA VGRSPFGLAS SVTGMTSTAG NAVLDMQALQ
     AKQADIANIP PQLTKMGGNT AFDYGNGYRG VYVIKKQLKA EYRRSLSSFF HKYGYKINRV
     KKPNLRTRKA YNYIQTKDCF ISGDINNNDL QEIRTIFDNG ITLWHTDDIG NYSVENELR