ID   J_BPPHK                 Reviewed;          24 AA.
AC   P69549; P08766;
DT   15-MAR-2005, integrated into UniProtKB/Swiss-Prot.
DT   15-MAR-2005, sequence version 1.
DT   25-MAY-2022, entry version 53.
DE   RecName: Full=DNA-binding protein J;
DE   AltName: Full=J protein;
DE   AltName: Full=Small core protein;
GN   Name=J;
OS   Enterobacteria phage phiK (Bacteriophage phi-K).
OC   Viruses; Monodnaviria; Sangervirae; Phixviricota; Malgrandaviricetes;
OC   Petitvirales; Microviridae; Bullavirinae; Alphatrevirus.
OX   NCBI_TaxID=10848;
OH   NCBI_TaxID=562; Escherichia coli.
RN   [1]
RP   NUCLEOTIDE SEQUENCE [GENOMIC DNA] (PHI-K AND MUTANT PHI KHT).
RX   PubMed=8827438; DOI=10.1093/oxfordjournals.jbchem.a021348;
RA   Kodaira K., Oki M., Kakikawa M., Kimoto H., Taketo A.;
RT   "The virion proteins encoded by bacteriophage phi K and its host-range
RT   mutant phi KhT: host-range determination and DNA binding properties.";
RL   J. Biochem. 119:1062-1069(1996).
CC   -!- FUNCTION: Mediates ssDNA packaging into virion, it locates to the
CC       internal surface of the capsid, thereby displacing the internal
CC       scaffolding protein B during virion formation. Protein J binds to and
CC       is packaged with the viral ssDNA. Additionally, protein J plays a role
CC       in viral attachment efficiency to the host cell.
CC       {ECO:0000250|UniProtKB:P69592}.
CC   -!- SUBUNIT: Interacts with F protein. {ECO:0000250|UniProtKB:P69592}.
CC   -!- SUBCELLULAR LOCATION: Virion {ECO:0000250|UniProtKB:P69592}. Host
CC       cytoplasm {ECO:0000250|UniProtKB:P69592}. Note=situated at the
CC       interface between the internal surface of the capsid and the nucleic
CC       acid. {ECO:0000250|UniProtKB:P69592}.
CC   -!- MISCELLANEOUS: Phi KhT, a host-range mutant of phi K, can grow on
CC       E.coli C and B, besides K12, and is more thermosensitive than the
CC       parental phage phi K.
CC   -!- SIMILARITY: Belongs to the microviridae J protein family.
CC       {ECO:0000305}.
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DR   EMBL; X60323; CAA42890.1; -; Genomic_DNA.
DR   PIR; JC4804; JC4804.
DR   RefSeq; NP_043948.1; NC_001730.1.
DR   SMR; P69549; -.
DR   GeneID; 1261198; -.
DR   KEGG; vg:1261198; -.
DR   Proteomes; UP000002122; Genome.
DR   GO; GO:0030430; C:host cell cytoplasm; IEA:UniProtKB-SubCell.
DR   GO; GO:0019028; C:viral capsid; IEA:UniProtKB-KW.
DR   GO; GO:0003677; F:DNA binding; IEA:UniProtKB-KW.
DR   InterPro; IPR006815; Microvir_J-like.
DR   Pfam; PF04726; Microvir_J; 1.
DR   PIRSF; PIRSF004161; Microvir_J; 1.
PE   3: Inferred from homology;
KW   Capsid protein; DNA-binding; Host cytoplasm; Viral genome packaging;
KW   Viral release from host cell; Virion.
FT   CHAIN           1..24
FT                   /note="DNA-binding protein J"
FT                   /id="PRO_0000164905"
SQ   SEQUENCE   24 AA;  2823 MW;  0EE261CFF11F669B CRC64;
     MKKARRSPSR RKGARLWYVG GSQF