ID   TRPR_HAEIN              Reviewed;         101 AA.
AC   P44889;
DT   01-NOV-1995, integrated into UniProtKB/Swiss-Prot.
DT   01-NOV-1995, sequence version 1.
DT   03-AUG-2022, entry version 125.
DE   RecName: Full=Trp operon repressor homolog;
GN   Name=trpR; OrderedLocusNames=HI_0830;
OS   Haemophilus influenzae (strain ATCC 51907 / DSM 11121 / KW20 / Rd).
OC   Bacteria; Proteobacteria; Gammaproteobacteria; Pasteurellales;
OC   Pasteurellaceae; Haemophilus.
OX   NCBI_TaxID=71421;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC 51907 / DSM 11121 / KW20 / Rd;
RX   PubMed=7542800; DOI=10.1126/science.7542800;
RA   Fleischmann R.D., Adams M.D., White O., Clayton R.A., Kirkness E.F.,
RA   Kerlavage A.R., Bult C.J., Tomb J.-F., Dougherty B.A., Merrick J.M.,
RA   McKenney K., Sutton G.G., FitzHugh W., Fields C.A., Gocayne J.D.,
RA   Scott J.D., Shirley R., Liu L.-I., Glodek A., Kelley J.M., Weidman J.F.,
RA   Phillips C.A., Spriggs T., Hedblom E., Cotton M.D., Utterback T.R.,
RA   Hanna M.C., Nguyen D.T., Saudek D.M., Brandon R.C., Fine L.D.,
RA   Fritchman J.L., Fuhrmann J.L., Geoghagen N.S.M., Gnehm C.L., McDonald L.A.,
RA   Small K.V., Fraser C.M., Smith H.O., Venter J.C.;
RT   "Whole-genome random sequencing and assembly of Haemophilus influenzae
RT   Rd.";
RL   Science 269:496-512(1995).
CC   -!- FUNCTION: This protein is an aporepressor. When complexed with L-
CC       tryptophan it binds the operator region of the trp operon and prevents
CC       the initiation of transcription (By similarity). {ECO:0000250}.
CC   -!- SUBUNIT: Homodimer. {ECO:0000250}.
CC   -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000250}.
CC   -!- SIMILARITY: Belongs to the TrpR family. {ECO:0000305}.
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DR   EMBL; L42023; AAC22488.1; -; Genomic_DNA.
DR   PIR; D64097; D64097.
DR   RefSeq; NP_438990.1; NC_000907.1.
DR   RefSeq; WP_005629736.1; NC_000907.1.
DR   AlphaFoldDB; P44889; -.
DR   SMR; P44889; -.
DR   STRING; 71421.HI_0830; -.
DR   EnsemblBacteria; AAC22488; AAC22488; HI_0830.
DR   GeneID; 56956652; -.
DR   KEGG; hin:HI_0830; -.
DR   PATRIC; fig|71421.8.peg.871; -.
DR   eggNOG; COG2973; Bacteria.
DR   HOGENOM; CLU_147939_0_0_6; -.
DR   OMA; GQMSQRE; -.
DR   PhylomeDB; P44889; -.
DR   BioCyc; HINF71421:G1GJ1-871-MON; -.
DR   Proteomes; UP000000579; 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; IBA:GO_Central.
DR   GO; GO:0045892; P:negative regulation of transcription, DNA-templated; IEA:UniProtKB-UniRule.
DR   GO; GO:0006355; P:regulation of transcription, DNA-templated; IBA:GO_Central.
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; Reference proteome; Repressor; Transcription;
KW   Transcription regulation.
FT   CHAIN           1..101
FT                   /note="Trp operon repressor homolog"
FT                   /id="PRO_0000196509"
FT   DNA_BIND        59..82
FT                   /evidence="ECO:0000250"
SQ   SEQUENCE   101 AA;  11872 MW;  03592CCED4F6D824 CRC64;
     MYISRNLEQW NAFLQMLKIA FEENKAQEFL TLLLTADERD AVGLRLQIVS QLIDKNMPQR
     EIQQNLNTSA ATITRGSNMI KTMDPDFMQW MKQHLDLIEK N