ID   BETI_ECO8A              Reviewed;         195 AA.
AC   B7M2V7;
DT   14-APR-2009, integrated into UniProtKB/Swiss-Prot.
DT   10-FEB-2009, sequence version 1.
DT   25-MAY-2022, entry version 71.
DE   RecName: Full=HTH-type transcriptional regulator BetI {ECO:0000255|HAMAP-Rule:MF_00768};
GN   Name=betI {ECO:0000255|HAMAP-Rule:MF_00768}; OrderedLocusNames=ECIAI1_0310;
OS   Escherichia coli O8 (strain IAI1).
OC   Bacteria; Proteobacteria; Gammaproteobacteria; Enterobacterales;
OC   Enterobacteriaceae; Escherichia.
OX   NCBI_TaxID=585034;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=IAI1;
RX   PubMed=19165319; DOI=10.1371/journal.pgen.1000344;
RA   Touchon M., Hoede C., Tenaillon O., Barbe V., Baeriswyl S., Bidet P.,
RA   Bingen E., Bonacorsi S., Bouchier C., Bouvet O., Calteau A., Chiapello H.,
RA   Clermont O., Cruveiller S., Danchin A., Diard M., Dossat C., Karoui M.E.,
RA   Frapy E., Garry L., Ghigo J.M., Gilles A.M., Johnson J., Le Bouguenec C.,
RA   Lescat M., Mangenot S., Martinez-Jehanne V., Matic I., Nassif X., Oztas S.,
RA   Petit M.A., Pichon C., Rouy Z., Ruf C.S., Schneider D., Tourret J.,
RA   Vacherie B., Vallenet D., Medigue C., Rocha E.P.C., Denamur E.;
RT   "Organised genome dynamics in the Escherichia coli species results in
RT   highly diverse adaptive paths.";
RL   PLoS Genet. 5:E1000344-E1000344(2009).
CC   -!- FUNCTION: Repressor involved in the biosynthesis of the osmoprotectant
CC       glycine betaine. It represses transcription of the choline transporter
CC       BetT and the genes of BetAB involved in the synthesis of glycine
CC       betaine (By similarity). {ECO:0000250}.
CC   -!- PATHWAY: Amine and polyamine biosynthesis; betaine biosynthesis via
CC       choline pathway [regulation].
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DR   EMBL; CU928160; CAQ97184.1; -; Genomic_DNA.
DR   RefSeq; WP_001351501.1; NC_011741.1.
DR   AlphaFoldDB; B7M2V7; -.
DR   SMR; B7M2V7; -.
DR   KEGG; ecr:ECIAI1_0310; -.
DR   HOGENOM; CLU_069356_15_4_6; -.
DR   OMA; DFWSSSM; -.
DR   UniPathway; UPA00529; -.
DR   GO; GO:0003677; F:DNA binding; IEA:UniProtKB-KW.
DR   GO; GO:0003700; F:DNA-binding transcription factor activity; IEA:UniProtKB-UniRule.
DR   GO; GO:0019285; P:glycine betaine biosynthetic process from choline; IEA:UniProtKB-UniRule.
DR   GO; GO:0045892; P:negative regulation of transcription, DNA-templated; IEA:UniProtKB-UniRule.
DR   HAMAP; MF_00768; HTH_type_BetI; 1.
DR   InterPro; IPR039538; BetI_C.
DR   InterPro; IPR023772; DNA-bd_HTH_TetR-type_CS.
DR   InterPro; IPR009057; Homeobox-like_sf.
DR   InterPro; IPR001647; HTH_TetR.
DR   InterPro; IPR036271; Tet_transcr_reg_TetR-rel_C_sf.
DR   InterPro; IPR017757; Tscrpt_rep_BetI.
DR   Pfam; PF13977; TetR_C_6; 1.
DR   Pfam; PF00440; TetR_N; 1.
DR   PRINTS; PR00455; HTHTETR.
DR   SUPFAM; SSF46689; SSF46689; 1.
DR   SUPFAM; SSF48498; SSF48498; 1.
DR   TIGRFAMs; TIGR03384; betaine_BetI; 1.
DR   PROSITE; PS01081; HTH_TETR_1; 1.
DR   PROSITE; PS50977; HTH_TETR_2; 1.
PE   3: Inferred from homology;
KW   DNA-binding; Repressor; Transcription; Transcription regulation.
FT   CHAIN           1..195
FT                   /note="HTH-type transcriptional regulator BetI"
FT                   /id="PRO_1000133661"
FT   DOMAIN          8..68
FT                   /note="HTH tetR-type"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00768"
FT   DNA_BIND        31..50
FT                   /note="H-T-H motif"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00768"
SQ   SEQUENCE   195 AA;  21791 MW;  A29ABA73A605E4CA CRC64;
     MPKLGMQSIR RRQLIDATLE AINEVGMHDA TIAQIARRAG VSTGIISHYF RDKNGLLEAT
     MRDITSQLRD AVLNRLHALP QGSAEQRLQA IVGGNFDETQ VSSAAMKAWL AFWASSMHQP
     MLYRLQQVSS RRLLSNLVSE FRRELPREQA QEAGYGLAAL IDGLWLRAAL SGKPLDKPLA
     HSLTRHFITQ HLPTD