ID   CHAB_ECO57              Reviewed;          76 AA.
AC   P0AE65; P39162;
DT   06-DEC-2005, integrated into UniProtKB/Swiss-Prot.
DT   06-DEC-2005, sequence version 1.
DT   03-AUG-2022, entry version 89.
DE   RecName: Full=Putative cation transport regulator ChaB;
GN   Name=chaB {ECO:0000303|PubMed:15306028}; OrderedLocusNames=Z1992, ECs1722;
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).
RN   [3] {ECO:0007744|PDB:1SG7}
RP   STRUCTURE BY NMR OF 2-76, POSSIBLE FUNCTION, AND SUBUNIT.
RC   STRAIN=O157:H7 / EHEC;
RX   PubMed=15306028; DOI=10.1186/1472-6807-4-9;
RA   Osborne M.J., Siddiqui N., Iannuzzi P., Gehring K.;
RT   "The solution structure of ChaB, a putative membrane ion antiporter
RT   regulator from Escherichia coli.";
RL   BMC Struct. Biol. 4:9-9(2004).
CC   -!- FUNCTION: Might be a regulator of the sodium-potassium/proton
CC       antiporter ChaA. {ECO:0000303|PubMed:15306028}.
CC   -!- SUBUNIT: Monomer. {ECO:0000269|PubMed:15306028}.
CC   -!- SIMILARITY: Belongs to the ChaB family. {ECO:0000305}.
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DR   EMBL; AE005174; AAG56077.1; -; Genomic_DNA.
DR   EMBL; BA000007; BAB35145.1; -; Genomic_DNA.
DR   PIR; A85702; A85702.
DR   PIR; B90844; B90844.
DR   RefSeq; NP_309749.1; NC_002695.1.
DR   RefSeq; WP_001146444.1; NZ_SWKA01000005.1.
DR   PDB; 1SG7; NMR; -; A=2-76.
DR   PDBsum; 1SG7; -.
DR   AlphaFoldDB; P0AE65; -.
DR   BMRB; P0AE65; -.
DR   SMR; P0AE65; -.
DR   STRING; 155864.EDL933_1923; -.
DR   EnsemblBacteria; AAG56077; AAG56077; Z1992.
DR   EnsemblBacteria; BAB35145; BAB35145; ECs_1722.
DR   GeneID; 58460423; -.
DR   GeneID; 913139; -.
DR   KEGG; ece:Z1992; -.
DR   KEGG; ecs:ECs_1722; -.
DR   PATRIC; fig|386585.9.peg.1822; -.
DR   eggNOG; COG4572; Bacteria.
DR   HOGENOM; CLU_179907_0_0_6; -.
DR   OMA; KAFNSAW; -.
DR   Proteomes; UP000000558; Chromosome.
DR   Proteomes; UP000002519; Chromosome.
DR   Gene3D; 1.10.1740.70; -; 1.
DR   InterPro; IPR009317; ChaB.
DR   InterPro; IPR037205; ChaB_sf.
DR   Pfam; PF06150; ChaB; 1.
DR   SUPFAM; SSF140376; SSF140376; 1.
PE   1: Evidence at protein level;
KW   3D-structure; Reference proteome; Transcription; Transcription regulation.
FT   CHAIN           1..76
FT                   /note="Putative cation transport regulator ChaB"
FT                   /id="PRO_0000089633"
FT   STRAND          4..6
FT                   /evidence="ECO:0007829|PDB:1SG7"
FT   HELIX           11..14
FT                   /evidence="ECO:0007829|PDB:1SG7"
FT   HELIX           20..35
FT                   /evidence="ECO:0007829|PDB:1SG7"
FT   STRAND          38..43
FT                   /evidence="ECO:0007829|PDB:1SG7"
FT   HELIX           45..63
FT                   /evidence="ECO:0007829|PDB:1SG7"
FT   STRAND          64..66
FT                   /evidence="ECO:0007829|PDB:1SG7"
FT   STRAND          68..70
FT                   /evidence="ECO:0007829|PDB:1SG7"
FT   STRAND          72..74
FT                   /evidence="ECO:0007829|PDB:1SG7"
SQ   SEQUENCE   76 AA;  8945 MW;  6A3E56140D6E9FC1 CRC64;
     MPYKTKSDLP ESVKHVLPSH AQDIYKEAFN SAWDQYKDKE DRRDDASREE TAHKVAWAAV
     KHEYAKGDDD KWHKKS