ID   REX_LEUCK               Reviewed;         216 AA.
AC   B1MVM6;
DT   14-APR-2009, integrated into UniProtKB/Swiss-Prot.
DT   29-APR-2008, sequence version 1.
DT   03-AUG-2022, entry version 86.
DE   RecName: Full=Redox-sensing transcriptional repressor Rex {ECO:0000255|HAMAP-Rule:MF_01131};
GN   Name=rex {ECO:0000255|HAMAP-Rule:MF_01131}; OrderedLocusNames=LCK_01456;
OS   Leuconostoc citreum (strain KM20).
OC   Bacteria; Firmicutes; Bacilli; Lactobacillales; Lactobacillaceae;
OC   Leuconostoc.
OX   NCBI_TaxID=349519;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=KM20;
RX   PubMed=18281406; DOI=10.1128/jb.01862-07;
RA   Kim J.F., Jeong H., Lee J.-S., Choi S.-H., Ha M., Hur C.-G., Kim J.-S.,
RA   Lee S., Park H.-S., Park Y.-H., Oh T.K.;
RT   "Complete genome sequence of Leuconostoc citreum KM20.";
RL   J. Bacteriol. 190:3093-3094(2008).
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; DQ489736; ACA83280.1; -; Genomic_DNA.
DR   RefSeq; WP_004899069.1; NC_010471.1.
DR   AlphaFoldDB; B1MVM6; -.
DR   SMR; B1MVM6; -.
DR   STRING; 349519.LCK_01456; -.
DR   PRIDE; B1MVM6; -.
DR   EnsemblBacteria; ACA83280; ACA83280; LCK_01456.
DR   GeneID; 61101514; -.
DR   KEGG; lci:LCK_01456; -.
DR   eggNOG; COG2344; Bacteria.
DR   HOGENOM; CLU_061534_1_1_9; -.
DR   OMA; HEQRKAG; -.
DR   OrthoDB; 1872374at2; -.
DR   Proteomes; UP000002166; 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..216
FT                   /note="Redox-sensing transcriptional repressor Rex"
FT                   /id="PRO_1000137328"
FT   DNA_BIND        17..56
FT                   /note="H-T-H motif"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01131"
FT   BINDING         91..96
FT                   /ligand="NAD(+)"
FT                   /ligand_id="ChEBI:CHEBI:57540"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01131"
SQ   SEQUENCE   216 AA;  23784 MW;  69D3CC9AF100FFDA CRC64;
     MTQQPKIPRA TAKRLPIYFR YLTFLHDAGT DRISSAELSD AIKFDAATIR RDFSYFGALG
     KRGYGYDVKA LLDFFANVLD QDSLINVALI GAGNLGQALL NFNFHQSSNM RISAAFDVDE
     TRAGTIMAGV PIYAMSELTE QITAQRINIA ILTVPQGVAQ EITDKLVEAG IKGILNFTPL
     RVTVPNNVRV QNVDLTNELQ TLVYFIDNYG SITTGL