ID   REX_BACCZ               Reviewed;         209 AA.
AC   Q63GW0;
DT   05-FEB-2008, integrated into UniProtKB/Swiss-Prot.
DT   25-OCT-2004, sequence version 1.
DT   03-AUG-2022, entry version 100.
DE   RecName: Full=Redox-sensing transcriptional repressor Rex {ECO:0000255|HAMAP-Rule:MF_01131};
GN   Name=rex {ECO:0000255|HAMAP-Rule:MF_01131}; OrderedLocusNames=BCE33L0237;
OS   Bacillus cereus (strain ZK / E33L).
OC   Bacteria; Firmicutes; Bacilli; Bacillales; Bacillaceae; Bacillus;
OC   Bacillus cereus group.
OX   NCBI_TaxID=288681;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ZK / E33L;
RX   PubMed=16621833; DOI=10.1128/jb.188.9.3382-3390.2006;
RA   Han C.S., Xie G., Challacombe J.F., Altherr M.R., Bhotika S.S., Bruce D.,
RA   Campbell C.S., Campbell M.L., Chen J., Chertkov O., Cleland C.,
RA   Dimitrijevic M., Doggett N.A., Fawcett J.J., Glavina T., Goodwin L.A.,
RA   Hill K.K., Hitchcock P., Jackson P.J., Keim P., Kewalramani A.R.,
RA   Longmire J., Lucas S., Malfatti S., McMurry K., Meincke L.J., Misra M.,
RA   Moseman B.L., Mundt M., Munk A.C., Okinaka R.T., Parson-Quintana B.,
RA   Reilly L.P., Richardson P., Robinson D.L., Rubin E., Saunders E., Tapia R.,
RA   Tesmer J.G., Thayer N., Thompson L.S., Tice H., Ticknor L.O., Wills P.L.,
RA   Brettin T.S., Gilna P.;
RT   "Pathogenomic sequence analysis of Bacillus cereus and Bacillus
RT   thuringiensis isolates closely related to Bacillus anthracis.";
RL   J. Bacteriol. 188:3382-3390(2006).
CC   -!- FUNCTION: Modulates transcription in response to changes in cellular
CC       NADH/NAD(+) redox state. {ECO:0000255|HAMAP-Rule:MF_01131}.
CC   -!- SUBUNIT: Homodimer. {ECO:0000255|HAMAP-Rule:MF_01131}.
CC   -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000255|HAMAP-Rule:MF_01131}.
CC   -!- SIMILARITY: Belongs to the transcriptional regulatory Rex family.
CC       {ECO:0000255|HAMAP-Rule:MF_01131}.
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DR   EMBL; CP000001; AAU19997.1; -; Genomic_DNA.
DR   RefSeq; WP_000437702.1; NZ_CP009968.1.
DR   AlphaFoldDB; Q63GW0; -.
DR   SMR; Q63GW0; -.
DR   EnsemblBacteria; AAU19997; AAU19997; BCE33L0237.
DR   KEGG; bcz:BCE33L0237; -.
DR   PATRIC; fig|288681.22.peg.5374; -.
DR   OMA; HEQRKAG; -.
DR   Proteomes; UP000002612; Chromosome.
DR   GO; GO:0005737; C:cytoplasm; IEA:UniProtKB-SubCell.
DR   GO; GO:0003677; F:DNA binding; IEA:UniProtKB-UniRule.
DR   GO; GO:0003700; F:DNA-binding transcription factor activity; IEA:UniProtKB-UniRule.
DR   GO; GO:0045892; P:negative regulation of transcription, DNA-templated; IEA:InterPro.
DR   GO; GO:0051775; P:response to redox state; IEA:InterPro.
DR   Gene3D; 1.10.10.10; -; 1.
DR   HAMAP; MF_01131; Rex; 1.
DR   InterPro; IPR003781; CoA-bd.
DR   InterPro; IPR036291; NAD(P)-bd_dom_sf.
DR   InterPro; IPR009718; Rex_DNA-bd_C_dom.
DR   InterPro; IPR022876; Tscrpt_rep_Rex.
DR   InterPro; IPR036388; WH-like_DNA-bd_sf.
DR   InterPro; IPR036390; WH_DNA-bd_sf.
DR   PANTHER; PTHR35786; PTHR35786; 1.
DR   Pfam; PF02629; CoA_binding; 1.
DR   Pfam; PF06971; Put_DNA-bind_N; 1.
DR   SMART; SM00881; CoA_binding; 1.
DR   SUPFAM; SSF46785; SSF46785; 1.
DR   SUPFAM; SSF51735; SSF51735; 1.
PE   3: Inferred from homology;
KW   Cytoplasm; DNA-binding; NAD; Repressor; Transcription;
KW   Transcription regulation.
FT   CHAIN           1..209
FT                   /note="Redox-sensing transcriptional repressor Rex"
FT                   /id="PRO_1000065386"
FT   DNA_BIND        16..55
FT                   /note="H-T-H motif"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01131"
FT   BINDING         90..95
FT                   /ligand="NAD(+)"
FT                   /ligand_id="ChEBI:CHEBI:57540"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01131"
SQ   SEQUENCE   209 AA;  23516 MW;  2426CE747C5DACD8 CRC64;
     MEQQKIPQAT AKRLPLYYRF IQNLSLSGKQ RVSSAELSEA VKVDSATIRR DFSYFGALGK
     KGYGYNVNYL LSFFRETLDQ DDITRVALIG VGNLGTAFLH YNFTKNNNTK IEMAFDVSEE
     KVGTEIGGIP VYHLDELEER LSSDIQVAIL TVPATVAQSV ADRLAETNVH GILNFTPARL
     NVSENIRIHH IDLAVELQTL VYFLKNYPQ