ID   TRPR_SALEP              Reviewed;         108 AA.
AC   B5R3B5;
DT   14-APR-2009, integrated into UniProtKB/Swiss-Prot.
DT   04-NOV-2008, sequence version 1.
DT   25-MAY-2022, entry version 74.
DE   RecName: Full=Trp operon repressor {ECO:0000255|HAMAP-Rule:MF_00475};
GN   Name=trpR {ECO:0000255|HAMAP-Rule:MF_00475}; OrderedLocusNames=SEN4339;
OS   Salmonella enteritidis PT4 (strain P125109).
OC   Bacteria; Proteobacteria; Gammaproteobacteria; Enterobacterales;
OC   Enterobacteriaceae; Salmonella.
OX   NCBI_TaxID=550537;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=P125109;
RX   PubMed=18583645; DOI=10.1101/gr.077404.108;
RA   Thomson N.R., Clayton D.J., Windhorst D., Vernikos G., Davidson S.,
RA   Churcher C., Quail M.A., Stevens M., Jones M.A., Watson M., Barron A.,
RA   Layton A., Pickard D., Kingsley R.A., Bignell A., Clark L., Harris B.,
RA   Ormond D., Abdellah Z., Brooks K., Cherevach I., Chillingworth T.,
RA   Woodward J., Norberczak H., Lord A., Arrowsmith C., Jagels K., Moule S.,
RA   Mungall K., Saunders M., Whitehead S., Chabalgoity J.A., Maskell D.,
RA   Humphreys T., Roberts M., Barrow P.A., Dougan G., Parkhill J.;
RT   "Comparative genome analysis of Salmonella enteritidis PT4 and Salmonella
RT   gallinarum 287/91 provides insights into evolutionary and host adaptation
RT   pathways.";
RL   Genome Res. 18:1624-1637(2008).
CC   -!- FUNCTION: This protein is an aporepressor. When complexed with L-
CC       tryptophan it binds the operator region of the trp operon (5'-
CC       ACTAGT-'3') and prevents the initiation of transcription. The complex
CC       also regulates trp repressor biosynthesis by binding to its regulatory
CC       region. {ECO:0000255|HAMAP-Rule:MF_00475}.
CC   -!- SUBUNIT: Homodimer. {ECO:0000255|HAMAP-Rule:MF_00475}.
CC   -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000255|HAMAP-Rule:MF_00475}.
CC   -!- SIMILARITY: Belongs to the TrpR family. {ECO:0000255|HAMAP-
CC       Rule:MF_00475}.
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DR   EMBL; AM933172; CAR35892.1; -; Genomic_DNA.
DR   RefSeq; WP_000194249.1; NC_011294.1.
DR   AlphaFoldDB; B5R3B5; -.
DR   SMR; B5R3B5; -.
DR   KEGG; set:SEN4339; -.
DR   HOGENOM; CLU_147939_0_0_6; -.
DR   OMA; GQMSQRE; -.
DR   Proteomes; UP000000613; Chromosome.
DR   GO; GO:0005737; C:cytoplasm; IEA:UniProtKB-SubCell.
DR   GO; GO:0003700; F:DNA-binding transcription factor activity; IEA:InterPro.
DR   GO; GO:0043565; F:sequence-specific DNA binding; IEA:InterPro.
DR   GO; GO:0045892; P:negative regulation of transcription, DNA-templated; IEA:UniProtKB-UniRule.
DR   Gene3D; 1.10.1270.10; -; 1.
DR   HAMAP; MF_00475; Trp_repressor; 1.
DR   InterPro; IPR000831; Trp_repress.
DR   InterPro; IPR013335; Trp_repress_bac.
DR   InterPro; IPR010921; Trp_repressor/repl_initiator.
DR   InterPro; IPR038116; TrpR-like_sf.
DR   PANTHER; PTHR38025; PTHR38025; 1.
DR   Pfam; PF01371; Trp_repressor; 1.
DR   PIRSF; PIRSF003196; Trp_repressor; 1.
DR   SUPFAM; SSF48295; SSF48295; 1.
DR   TIGRFAMs; TIGR01321; TrpR; 1.
PE   3: Inferred from homology;
KW   Cytoplasm; DNA-binding; Repressor; Transcription; Transcription regulation.
FT   CHAIN           1..108
FT                   /note="Trp operon repressor"
FT                   /id="PRO_1000197153"
FT   DNA_BIND        68..91
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00475"
SQ   SEQUENCE   108 AA;  12410 MW;  BE1E6EBE2757004F CRC64;
     MTQRSPYSSA IAEQRNQEWL RFVELLRQAY AEDLHLPLLQ LMLTPDEREA LGTRVRIIEE
     LLRGEMSQRE LKTELGAGIA TITRGSNSLK SAPVELRHWL ENVLLKNA