ID   REX_DESAP               Reviewed;         214 AA.
AC   B1I516;
DT   22-SEP-2009, integrated into UniProtKB/Swiss-Prot.
DT   29-APR-2008, sequence version 1.
DT   03-AUG-2022, entry version 84.
DE   RecName: Full=Redox-sensing transcriptional repressor Rex {ECO:0000255|HAMAP-Rule:MF_01131};
GN   Name=rex {ECO:0000255|HAMAP-Rule:MF_01131}; OrderedLocusNames=Daud_1585;
OS   Desulforudis audaxviator (strain MP104C).
OC   Bacteria; Firmicutes; Clostridia; Eubacteriales; Peptococcaceae;
OC   Candidatus Desulforudis.
OX   NCBI_TaxID=477974;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=MP104C;
RA   Copeland A., Lucas S., Lapidus A., Barry K., Glavina del Rio T., Dalin E.,
RA   Tice H., Bruce D., Pitluck S., Lowry S.R., Larimer F., Land M.L.,
RA   Hauser L., Kyrpides N., Ivanova N.N., Richardson P.;
RT   "Complete sequence of chromosome of Desulforudis audaxviator MP104C.";
RL   Submitted (OCT-2007) to the EMBL/GenBank/DDBJ databases.
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; CP000860; ACA60087.1; -; Genomic_DNA.
DR   RefSeq; WP_012302668.1; NC_010424.1.
DR   AlphaFoldDB; B1I516; -.
DR   SMR; B1I516; -.
DR   STRING; 477974.Daud_1585; -.
DR   EnsemblBacteria; ACA60087; ACA60087; Daud_1585.
DR   KEGG; dau:Daud_1585; -.
DR   eggNOG; COG2344; Bacteria.
DR   HOGENOM; CLU_061534_0_1_9; -.
DR   OMA; HEQRKAG; -.
DR   OrthoDB; 1872374at2; -.
DR   Proteomes; UP000008544; 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; Reference proteome; Repressor; Transcription;
KW   Transcription regulation.
FT   CHAIN           1..214
FT                   /note="Redox-sensing transcriptional repressor Rex"
FT                   /id="PRO_1000213633"
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   214 AA;  23569 MW;  08B179E47906D5D6 CRC64;
     MKALRIPEAT VTRLSIYSRF LERLEQRGIT TVSSSEIAKG VGVSPAQVRK DLAYFGEFGT
     RGVGYNVKDL IHYILKILGL TRPWNVILVG AGNLGTALCT YRGFIDRGFN IVGVFDNDLT
     KIGKRIHDLE VLPLERMPEV IEQHDVKIAI IAVPLGSVQD IADQLVGHSL KALLTFGPVV
     VDVPGDVVVR NVDLAVKLEI LTFNLVFKEL HSII