ID   HNS_ECO57               Reviewed;         137 AA.
AC   P0ACG0; P08936;
DT   22-NOV-2005, integrated into UniProtKB/Swiss-Prot.
DT   23-JAN-2007, sequence version 2.
DT   03-AUG-2022, entry version 94.
DE   RecName: Full=DNA-binding protein H-NS;
DE   AltName: Full=Histone-like protein HLP-II;
DE   AltName: Full=Protein B1;
DE   AltName: Full=Protein H1;
GN   Name=hns; OrderedLocusNames=Z2013, ECs1739;
OS   Escherichia coli O157:H7.
OC   Bacteria; Proteobacteria; Gammaproteobacteria; Enterobacterales;
OC   Enterobacteriaceae; Escherichia.
OX   NCBI_TaxID=83334;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=O157:H7 / EDL933 / ATCC 700927 / EHEC;
RX   PubMed=11206551; DOI=10.1038/35054089;
RA   Perna N.T., Plunkett G. III, Burland V., Mau B., Glasner J.D., Rose D.J.,
RA   Mayhew G.F., Evans P.S., Gregor J., Kirkpatrick H.A., Posfai G.,
RA   Hackett J., Klink S., Boutin A., Shao Y., Miller L., Grotbeck E.J.,
RA   Davis N.W., Lim A., Dimalanta E.T., Potamousis K., Apodaca J.,
RA   Anantharaman T.S., Lin J., Yen G., Schwartz D.C., Welch R.A.,
RA   Blattner F.R.;
RT   "Genome sequence of enterohaemorrhagic Escherichia coli O157:H7.";
RL   Nature 409:529-533(2001).
RN   [2]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=O157:H7 / Sakai / RIMD 0509952 / EHEC;
RX   PubMed=11258796; DOI=10.1093/dnares/8.1.11;
RA   Hayashi T., Makino K., Ohnishi M., Kurokawa K., Ishii K., Yokoyama K.,
RA   Han C.-G., Ohtsubo E., Nakayama K., Murata T., Tanaka M., Tobe T., Iida T.,
RA   Takami H., Honda T., Sasakawa C., Ogasawara N., Yasunaga T., Kuhara S.,
RA   Shiba T., Hattori M., Shinagawa H.;
RT   "Complete genome sequence of enterohemorrhagic Escherichia coli O157:H7 and
RT   genomic comparison with a laboratory strain K-12.";
RL   DNA Res. 8:11-22(2001).
CC   -!- FUNCTION: A DNA-binding protein implicated in transcriptional
CC       repression and chromosome organization and compaction. Binds nucleation
CC       sites in AT-rich DNA and bridges them, forming higher-order
CC       nucleoprotein complexes and condensing the chromosome. As many
CC       horizontally transferred genes are AT-rich, it plays a central role in
CC       silencing foreign genes. A subset of genes are repressed by H-NS in
CC       association with other proteins (By similarity).
CC       {ECO:0000250|UniProtKB:P0ACF8}.
CC   -!- SUBUNIT: Homodimer that oligomerizes on DNA into higher-order complexes
CC       that form bridges between disparate regions of DNA compacting it.
CC       Interacts with Hha, Cnu and StpA. {ECO:0000250|UniProtKB:P0ACF8}.
CC   -!- SUBCELLULAR LOCATION: Cytoplasm, nucleoid
CC       {ECO:0000250|UniProtKB:P0ACF8}.
CC   -!- SIMILARITY: Belongs to the histone-like protein H-NS family.
CC       {ECO:0000305}.
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DR   EMBL; AE005174; AAG56094.1; -; Genomic_DNA.
DR   EMBL; BA000007; BAB35162.1; -; Genomic_DNA.
DR   PIR; B85704; B85704.
DR   PIR; C90846; C90846.
DR   RefSeq; NP_309766.1; NC_002695.1.
DR   RefSeq; WP_001287378.1; NZ_SWKA01000005.1.
DR   AlphaFoldDB; P0ACG0; -.
DR   SMR; P0ACG0; -.
DR   STRING; 155864.EDL933_1940; -.
DR   EnsemblBacteria; AAG56094; AAG56094; Z2013.
DR   EnsemblBacteria; BAB35162; BAB35162; ECs_1739.
DR   GeneID; 66674941; -.
DR   GeneID; 913113; -.
DR   KEGG; ece:Z2013; -.
DR   KEGG; ecs:ECs_1739; -.
DR   PATRIC; fig|386585.9.peg.1839; -.
DR   eggNOG; COG2916; Bacteria.
DR   HOGENOM; CLU_117503_0_0_6; -.
DR   OMA; NGVEKTW; -.
DR   Proteomes; UP000000558; Chromosome.
DR   Proteomes; UP000002519; Chromosome.
DR   GO; GO:0005737; C:cytoplasm; IEA:UniProtKB-KW.
DR   GO; GO:0009295; C:nucleoid; IEA:UniProtKB-SubCell.
DR   GO; GO:0003677; F:DNA binding; IEA:UniProtKB-KW.
DR   GO; GO:0046983; F:protein dimerization activity; IEA:InterPro.
DR   GO; GO:0030527; F:structural constituent of chromatin; IEA:InterPro.
DR   GO; GO:0006355; P:regulation of transcription, DNA-templated; IEA:InterPro.
DR   Gene3D; 1.10.287.1050; -; 1.
DR   Gene3D; 4.10.430.10; -; 1.
DR   InterPro; IPR027444; H-NS_C_dom.
DR   InterPro; IPR037150; H-NS_C_dom_sf.
DR   InterPro; IPR001801; Histone_HNS.
DR   InterPro; IPR027454; Histone_HNS_N.
DR   Pfam; PF00816; Histone_HNS; 1.
DR   PIRSF; PIRSF002096; HnS; 1.
DR   SMART; SM00528; HNS; 1.
PE   3: Inferred from homology;
KW   Cytoplasm; DNA-binding; Reference proteome; Repressor; Transcription;
KW   Transcription regulation.
FT   INIT_MET        1
FT                   /note="Removed"
FT                   /evidence="ECO:0000250"
FT   CHAIN           2..137
FT                   /note="DNA-binding protein H-NS"
FT                   /id="PRO_0000168504"
FT   DNA_BIND        112..117
FT                   /evidence="ECO:0000250|UniProtKB:P0A1S2"
FT   SITE            12
FT                   /note="Interacts with Hha"
FT                   /evidence="ECO:0000250"
SQ   SEQUENCE   137 AA;  15540 MW;  E628184AC7C86F49 CRC64;
     MSEALKILNN IRTLRAQARE CTLETLEEML EKLEVVVNER REEESAAAAE VEERTRKLQQ
     YREMLIADGI DPNELLNSLA AVKSGTKAKR AQRPAKYSYV DENGETKTWT GQGRTPAVIK
     KAMDEQGKSL DDFLIKQ