ID   SCAFD_BPG4              Reviewed;         152 AA.
AC   P03638;
DT   21-JUL-1986, integrated into UniProtKB/Swiss-Prot.
DT   21-JUL-1986, sequence version 1.
DT   12-AUG-2020, entry version 80.
DE   RecName: Full=External scaffolding protein D;
DE   AltName: Full=Scaffolding protein D;
DE            Short=GPD;
GN   Name=D;
OS   Escherichia phage G4 (Bacteriophage G4).
OC   Viruses; Monodnaviria; Sangervirae; Phixviricota; Malgrandaviricetes;
OC   Petitvirales; Microviridae; Bullavirinae; Gequatrovirus.
OX   NCBI_TaxID=10843;
OH   NCBI_TaxID=562; Escherichia coli.
RN   [1]
RP   NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RX   PubMed=714153; DOI=10.1038/276236a0;
RA   Godson G.N., Barrell B.G., Staden R., Fiddes J.C.;
RT   "Nucleotide sequence of bacteriophage G4 DNA.";
RL   Nature 276:236-247(1978).
RN   [2]
RP   NUCLEOTIDE SEQUENCE [GENOMIC DNA] OF 56-152.
RX   PubMed=160951; DOI=10.1016/0022-2836(79)90249-3;
RA   Fiddes J.C., Godson G.N.;
RT   "Evolution of the three overlapping gene systems in G4 and phi X174.";
RL   J. Mol. Biol. 133:19-43(1979).
CC   -!- FUNCTION: Assembles the procapsid by joining twelve 12S pre-assembly
CC       complex into a T=1 icosahedral particle, called 108S procapsid. Ten
CC       proteins D bind each 12S complex, which are formed by three pentamers
CC       of F, G, B protein and a H protein. The scaffolding protein is released
CC       from the provirion after genome packaging to form the mature virion.
CC       {ECO:0000250|UniProtKB:P69486}.
CC   -!- SUBUNIT: Component of the procapsid particle composed of 60 copies of
CC       the internally located B, 240 copies of the external scaffolding
CC       protein D, 60 copies of each of the viral structural proteins F and G,
CC       and 12 copies of protein H. {ECO:0000250|UniProtKB:P69486}.
CC   -!- SUBCELLULAR LOCATION: Host cytoplasm {ECO:0000250|UniProtKB:P69486}.
CC   -!- SIMILARITY: Belongs to the microvirus D protein family. {ECO:0000305}.
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DR   EMBL; V00657; CAA24016.1; -; Genomic_DNA.
DR   EMBL; M10637; AAA32326.1; -; Genomic_DNA.
DR   PIR; A04246; ZDBPG4.
DR   SMR; P03638; -.
DR   Proteomes; UP000002140; Genome.
DR   GO; GO:0030430; C:host cell cytoplasm; IEA:UniProtKB-SubCell.
DR   GO; GO:0046797; P:viral procapsid maturation; IEA:InterPro.
DR   Gene3D; 1.10.1850.10; -; 1.
DR   InterPro; IPR004196; Scaffold_D.
DR   InterPro; IPR036632; Scaffold_D_sf.
DR   Pfam; PF02925; gpD; 1.
DR   SUPFAM; SSF48045; SSF48045; 1.
PE   3: Inferred from homology;
KW   Host cytoplasm; Reference proteome; Viral capsid assembly;
KW   Viral release from host cell.
FT   INIT_MET        1
FT                   /note="Removed; by host"
FT                   /evidence="ECO:0000250|UniProtKB:P69486"
FT   CHAIN           2..152
FT                   /note="External scaffolding protein D"
FT                   /evidence="ECO:0000250|UniProtKB:P69486"
FT                   /id="PRO_0000164878"
FT   CONFLICT        70
FT                   /note="R -> A (in Ref. 2; AAA32326)"
FT                   /evidence="ECO:0000305"
SQ   SEQUENCE   152 AA;  16872 MW;  C371CBFC3974EC72 CRC64;
     MSKSNESAVA FQTAIASIKL IQASSVLDLT EDDFDFLTRD RVWIATDRSR ARRAIEACVY
     GTLDFVGYPR FPAPVEFISA VIAYYVHPVN IQTACLIMEG AEFTENIVNG VERPVKASEL
     FAFTLLVRAG NKDLIGHAET NIREQLRAQG VM