ID   SCAF_BPAR1              Reviewed;         269 AA.
AC   Q9ZXI1;
DT   19-DEC-2001, integrated into UniProtKB/Swiss-Prot.
DT   01-MAY-1999, sequence version 1.
DT   29-SEP-2021, entry version 40.
DE   RecName: Full=Capsid assembly scaffolding protein;
DE   AltName: Full=Gene product 22;
DE            Short=gp22;
DE   AltName: Full=Head morphogenesis protein;
DE   AltName: Full=Major prohead-scaffolding core protein Gp22;
DE   AltName: Full=Scaffold protein;
DE   Contains:
DE     RecName: Full=Internal peptide VII;
GN   Name=22;
OS   Escherichia phage AR1 (Bacteriophage AR1).
OC   Viruses; Duplodnaviria; Heunggongvirae; Uroviricota; Caudoviricetes;
OC   Caudovirales; Myoviridae; Tevenvirinae; Tequatrovirus.
OX   NCBI_TaxID=66711;
OH   NCBI_TaxID=83334; Escherichia coli O157:H7.
RN   [1]
RP   NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RX   PubMed=9758911; DOI=10.1007/bf02253447;
RA   Yu S.L., Ding H.C., Seah J.N., Wu K.M., Chang Y.C., Chang K.S., Tam M.F.,
RA   Syu W.J.;
RT   "Characterization of a phage specific to hemorrhagic Escherichia coli
RT   O157:H7 and disclosure of variations in host outer membrane protein ompC.";
RL   J. Biomed. Sci. 5:370-382(1998).
CC   -!- FUNCTION: [Capsid assembly scaffolding protein]: Scaffolding protein
CC       involved in the icosahedric procapsid assembly. Coassembles with the
CC       capsid proteins to form the procapsid, in which the scaffolding protein
CC       is found within the external shell of icosahedrally arranged capsid
CC       protein subunits. In a subsequent step the scaffolding protein
CC       molecules are cleaved by the viral protease and released, except for
CC       the internal peptide VII. {ECO:0000250|UniProtKB:P04534}.
CC   -!- FUNCTION: [Internal peptide VII]: Cleavage product of Gp22 that is
CC       incorporated into the mature phage head.
CC       {ECO:0000250|UniProtKB:P04534}.
CC   -!- SUBCELLULAR LOCATION: [Internal peptide VII]: Virion
CC       {ECO:0000250|UniProtKB:P04534}.
CC   -!- SIMILARITY: Belongs to the T4likevirus capsid assembly scaffolding
CC       protein family. {ECO:0000305}.
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DR   EMBL; AF022930; AAD01754.1; -; Genomic_DNA.
DR   SMR; Q9ZXI1; -.
PE   3: Inferred from homology;
KW   Viral capsid assembly; Viral release from host cell; Virion.
FT   CHAIN           1..269
FT                   /note="Capsid assembly scaffolding protein"
FT                   /id="PRO_0000165011"
FT   PEPTIDE         62..84
FT                   /note="Internal peptide VII"
FT                   /evidence="ECO:0000250|UniProtKB:P04534"
FT                   /id="PRO_0000436970"
SQ   SEQUENCE   269 AA;  29961 MW;  1D2493F25B1EF9B9 CRC64;
     MLKEQLIAEA QKIDASVALD SIFESVNISP EAKETFGTVF EATVKQHAVK LAESHIAKIA
     EKAEEEVEKN KEEAEEKAEK KIAEQASKFL DHLAKEWLTE NKLAVDKGIK AELFESMLGG
     LKELFVEHNV VVPEESVDVV AEMEEELQEH KEESARLFEE LNKRDAYINY VQREVALSES
     TKDLTESQKE KVSALVEGID YSDAFSSKLS AIVEMVKKSN KDESTITESI NTPDTEEAGL
     NFVTEAVEDK SAQGAEDIVS VYAKVASRF