ID   GP73_BPT3               Reviewed;         106 AA.
AC   P20322;
DT   01-FEB-1991, integrated into UniProtKB/Swiss-Prot.
DT   01-FEB-1991, sequence version 1.
DT   23-FEB-2022, entry version 49.
DE   RecName: Full=Protein 7.3;
DE   AltName: Full=Gene product 7.3;
DE            Short=Gp7.3;
DE   AltName: Full=Host specificity protein B;
GN   Name=7.3;
OS   Enterobacteria phage T3 (Bacteriophage T3).
OC   Viruses; Duplodnaviria; Heunggongvirae; Uroviricota; Caudoviricetes;
OC   Caudovirales; Autographiviridae; Studiervirinae; Teetrevirus;
OC   Escherichia virus T3.
OX   NCBI_TaxID=10759;
OH   NCBI_TaxID=562; Escherichia coli.
RN   [1]
RP   NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RC   STRAIN=Luria;
RX   PubMed=2614843; DOI=10.1016/0022-2836(89)90102-2;
RA   Beck P.J., Gonzalez S., Ward C.L., Molineux I.J.;
RT   "Sequence of bacteriophage T3 DNA from gene 2.5 through gene 9.";
RL   J. Mol. Biol. 210:687-701(1989).
CC   -!- FUNCTION: Plays an essential role most probably in virion tail
CC       assembly. May form a scaffold around which gp11 and gp12 polymerize.
CC       Gets ejected from the infecting particle into the bacterial cell.
CC       {ECO:0000250|UniProtKB:P03751}.
CC   -!- SUBCELLULAR LOCATION: Virion {ECO:0000250|UniProtKB:P03751}.
CC       Note=Component of the tail. {ECO:0000250|UniProtKB:P03751}.
CC   -!- SIMILARITY: Belongs to the T7likevirus protein 7.3 family.
CC       {ECO:0000305}.
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DR   EMBL; X17255; CAA35151.1; -; Genomic_DNA.
DR   PIR; S07520; S07520.
DR   RefSeq; NP_523331.1; NC_003298.1.
DR   GeneID; 927414; -.
DR   KEGG; vg:927414; -.
DR   GO; GO:0098015; C:virus tail; IEA:UniProtKB-KW.
DR   GO; GO:0098003; P:viral tail assembly; IEA:UniProtKB-KW.
DR   InterPro; IPR024281; Phage_T7-like_viron_assmbl.
DR   Pfam; PF11653; VirionAssem_T7; 1.
PE   3: Inferred from homology;
KW   Viral release from host cell; Viral tail assembly; Viral tail protein;
KW   Virion.
FT   CHAIN           1..106
FT                   /note="Protein 7.3"
FT                   /id="PRO_0000106513"
FT   REGION          48..106
FT                   /note="Disordered"
FT                   /evidence="ECO:0000256|SAM:MobiDB-lite"
SQ   SEQUENCE   106 AA;  10842 MW;  5006890DF38A73A3 CRC64;
     MGFFKKIKKA VKKVVKEVGK PIEKAGKEVG KAVGGALGAG KQEIIQQEAP APVVAAPPPA
     QVVDVPEQDK AEGEDEAQTE SARKKARAGG KKALSVARSS GGGINI