ID   SSB_BPB03               Reviewed;         122 AA.
AC   Q37885;
DT   15-DEC-1998, integrated into UniProtKB/Swiss-Prot.
DT   01-NOV-1996, sequence version 1.
DT   29-SEP-2021, entry version 67.
DE   RecName: Full=Single-stranded DNA-binding protein {ECO:0000250|UniProtKB:Q38504};
DE            Short=SSB {ECO:0000250|UniProtKB:Q38504};
DE   AltName: Full=Gene product 5 {ECO:0000250|UniProtKB:Q38504};
DE            Short=gp5 {ECO:0000250|UniProtKB:Q38504};
DE   AltName: Full=Protein p5 {ECO:0000250|UniProtKB:Q38504};
GN   Name=5; Synonyms=5A;
OS   Bacillus phage B103 (Bacteriophage B103).
OC   Viruses; Duplodnaviria; Heunggongvirae; Uroviricota; Caudoviricetes;
OC   Caudovirales; Salasmaviridae; Picovirinae; Beecentumtrevirus.
OX   NCBI_TaxID=10778;
OH   NCBI_TaxID=1423; Bacillus subtilis.
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RX   PubMed=9358052; DOI=10.1016/s0378-1119(97)00363-6;
RA   Pecenkova T., Benes V., Paces J., Vlcek C., Paces V.;
RT   "Bacteriophage B103: complete DNA sequence of its genome and relationship
RT   to other Bacillus phages.";
RL   Gene 199:157-163(1997).
CC   -!- FUNCTION: Single-stranded DNA binding protein required for the
CC       elongation during viral DNA replication by strand displacement.
CC       Displaced viral DNA strands are transiently coated with the ssDNA-
CC       binding protein and therefore protected againt nucleases. The latter is
CC       then probably removed by the replisome that performs lagging strand
CC       synthesis or during the events that lead up to the recombination
CC       process. Has helix-destabilizing activity since it removes secondary
CC       structure from the ssDNA in replicative intermediates.
CC       {ECO:0000250|UniProtKB:Q38504}.
CC   -!- SUBUNIT: Monomer. {ECO:0000250|UniProtKB:Q38504}.
CC   -!- SIMILARITY: Belongs to the phi29likevirus single-strand-binding protein
CC       family. {ECO:0000305}.
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DR   EMBL; X99260; CAA67652.1; -; Genomic_DNA.
DR   RefSeq; NP_690638.1; NC_004165.1.
DR   GeneID; 955373; -.
DR   KEGG; vg:955373; -.
DR   Proteomes; UP000000971; Genome.
DR   GO; GO:0003677; F:DNA binding; IEA:UniProtKB-KW.
DR   GO; GO:0006260; P:DNA replication; IEA:UniProtKB-KW.
DR   GO; GO:0039693; P:viral DNA genome replication; IEA:UniProtKB-KW.
DR   InterPro; IPR035408; Phi29_Phage_SSB.
DR   Pfam; PF17427; Phi29_Phage_SSB; 1.
PE   3: Inferred from homology;
KW   DNA replication; DNA-binding; Early protein; Viral DNA replication.
FT   CHAIN           1..122
FT                   /note="Single-stranded DNA-binding protein"
FT                   /id="PRO_0000106562"
SQ   SEQUENCE   122 AA;  13119 MW;  3EF372119C43F98E CRC64;
     MTNEIKATFD VTTLEGRMKI LNAKNAGGAS LKTCVDGTII EAVGIAQYQQ ESDTYGDMKE
     ETVTAIFTAD GDVISAISKT VAEAATEIID LVKEFNLDTF KVKVSKQKSS KGNEFFSLLL
     VG