ID   REX_SOLM1               Reviewed;         220 AA.
AC   C4XQ09;
DT   22-SEP-2009, integrated into UniProtKB/Swiss-Prot.
DT   28-JUL-2009, sequence version 1.
DT   03-AUG-2022, entry version 80.
DE   RecName: Full=Redox-sensing transcriptional repressor Rex {ECO:0000255|HAMAP-Rule:MF_01131};
GN   Name=rex {ECO:0000255|HAMAP-Rule:MF_01131}; OrderedLocusNames=DMR_42180;
OS   Solidesulfovibrio magneticus (strain ATCC 700980 / DSM 13731 / RS-1)
OS   (Desulfovibrio magneticus).
OC   Bacteria; Proteobacteria; Deltaproteobacteria; Desulfovibrionales;
OC   Desulfovibrionaceae; Solidesulfovibrio.
OX   NCBI_TaxID=573370;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC 700980 / DSM 13731 / RS-1;
RX   PubMed=19675025; DOI=10.1101/gr.088906.108;
RA   Nakazawa H., Arakaki A., Narita-Yamada S., Yashiro I., Jinno K., Aoki N.,
RA   Tsuruyama A., Okamura Y., Tanikawa S., Fujita N., Takeyama H.,
RA   Matsunaga T.;
RT   "Whole genome sequence of Desulfovibrio magneticus strain RS-1 revealed
RT   common gene clusters in magnetotactic bacteria.";
RL   Genome Res. 19:1801-1808(2009).
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; AP010904; BAH77709.1; -; Genomic_DNA.
DR   RefSeq; WP_015862834.1; NC_012796.1.
DR   AlphaFoldDB; C4XQ09; -.
DR   SMR; C4XQ09; -.
DR   STRING; 573370.DMR_42180; -.
DR   EnsemblBacteria; BAH77709; BAH77709; DMR_42180.
DR   KEGG; dma:DMR_42180; -.
DR   eggNOG; COG2344; Bacteria.
DR   HOGENOM; CLU_061534_1_0_7; -.
DR   OMA; HEQRKAG; -.
DR   Proteomes; UP000009071; 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..220
FT                   /note="Redox-sensing transcriptional repressor Rex"
FT                   /id="PRO_1000213635"
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   220 AA;  24682 MW;  E68DD4D3812A7E09 CRC64;
     MKSEHIPKAT IKRLAMYVQV LETLKREGSQ VVSSELLART CSVNPSQIRK DLAYFGEFGV
     RGVGYHVQDL IYSIKHSLGV DRVWKCALVG IGNLGKALLR HQDFKFRGFD IVGAFDCDPF
     KIGEEISGLE VVCTRRLKDA VKELGIEIGL ITTPVNRAQR ATNFLIEAGV KGIINYSPAM
     LTVPPDVYVE YVDFFHHFYS VAFSITLDRH QDRMGGDEDD