ID   SSB7_ECOLX              Reviewed;         175 AA.
AC   P28044;
DT   01-AUG-1992, integrated into UniProtKB/Swiss-Prot.
DT   23-JAN-2007, sequence version 2.
DT   25-MAY-2022, entry version 87.
DE   RecName: Full=Plasmid-derived single-stranded DNA-binding protein;
DE            Short=SSB {ECO:0000255|HAMAP-Rule:MF_00984};
DE   AltName: Full=Helix-destabilizing protein;
GN   Name=ssb;
OS   Escherichia coli.
OG   Plasmid pLP71a.
OC   Bacteria; Proteobacteria; Gammaproteobacteria; Enterobacterales;
OC   Enterobacteriaceae; Escherichia.
OX   NCBI_TaxID=562;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [GENOMIC DNA], AND FUNCTION.
RX   PubMed=2008432; DOI=10.1002/prot.340090206;
RA   Ruvolo P.P., Keating K.M., Williams K.R., Chase J.W.;
RT   "Single-stranded DNA binding proteins (SSBs) from prokaryotic transmissible
RT   plasmids.";
RL   Proteins 9:120-134(1991).
CC   -!- FUNCTION: May contribute to the conjugative processing of DNA. It has a
CC       functional relationship with Psi (plasmid-mediated sos inhibition)
CC       proteins. {ECO:0000269|PubMed:2008432}.
CC   -!- SUBUNIT: Homotetramer. {ECO:0000255|HAMAP-Rule:MF_00984}.
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DR   PIR; B38487; B38487.
DR   PDB; 3Q8D; X-ray; 2.30 A; E/F=168-175.
DR   PDBsum; 3Q8D; -.
DR   AlphaFoldDB; P28044; -.
DR   SMR; P28044; -.
DR   GO; GO:0003697; F:single-stranded DNA binding; IEA:UniProtKB-UniRule.
DR   GO; GO:0006310; P:DNA recombination; IEA:UniProtKB-UniRule.
DR   GO; GO:0006281; P:DNA repair; IEA:UniProtKB-UniRule.
DR   GO; GO:0006260; P:DNA replication; IEA:UniProtKB-UniRule.
DR   CDD; cd04496; SSB_OBF; 1.
DR   Gene3D; 2.40.50.140; -; 1.
DR   HAMAP; MF_00984; SSB; 1.
DR   InterPro; IPR012340; NA-bd_OB-fold.
DR   InterPro; IPR000424; Primosome_PriB/ssb.
DR   InterPro; IPR011344; ssDNA-bd.
DR   PANTHER; PTHR10302; PTHR10302; 1.
DR   Pfam; PF00436; SSB; 1.
DR   SUPFAM; SSF50249; SSF50249; 1.
DR   TIGRFAMs; TIGR00621; ssb; 1.
DR   PROSITE; PS50935; SSB; 1.
PE   1: Evidence at protein level;
KW   3D-structure; DNA damage; DNA recombination; DNA repair; DNA replication;
KW   DNA-binding; Plasmid.
FT   INIT_MET        1
FT                   /note="Removed"
FT                   /evidence="ECO:0000250"
FT   CHAIN           2..175
FT                   /note="Plasmid-derived single-stranded DNA-binding protein"
FT                   /id="PRO_0000096041"
FT   DOMAIN          6..110
FT                   /note="SSB"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00984"
FT   DNA_BIND        55..61
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00984"
FT   REGION          113..175
FT                   /note="Disordered"
FT                   /evidence="ECO:0000256|SAM:MobiDB-lite"
FT   MOTIF           170..175
FT                   /note="Important for interaction with partner proteins"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00984"
FT   COMPBIAS        113..136
FT                   /note="Polar residues"
FT                   /evidence="ECO:0000256|SAM:MobiDB-lite"
FT   COMPBIAS        141..158
FT                   /note="Basic and acidic residues"
FT                   /evidence="ECO:0000256|SAM:MobiDB-lite"
SQ   SEQUENCE   175 AA;  19524 MW;  B961ABEA7FA1CFA9 CRC64;
     MAVRGINKVI LVGRLGKDPE VRYIPNGGAV ANLQVATSES WRDKQTGEIR EQTEWHRVVL
     FGKLAEVAGE YLRKGAQVYI EGQLRTRSWE DNGITRYVTE ILVKTTGTMQ MLGRAAGTQT
     QPEEAQQFSG QPQPESQPEP KKGGAKTKGR ERKAAQPEPR QPSEPAYDFD DDIPF