ID   KORA1_ECOLX             Reviewed;         100 AA.
AC   Q57423;
DT   01-NOV-1997, integrated into UniProtKB/Swiss-Prot.
DT   01-NOV-1997, sequence version 1.
DT   25-MAY-2022, entry version 52.
DE   RecName: Full=TrfB transcriptional repressor protein;
DE   AltName: Full=Regulatory protein KorA;
GN   Name=trfB; Synonyms=korA;
OS   Escherichia coli.
OG   Plasmid IncP-beta R751.
OC   Bacteria; Proteobacteria; Gammaproteobacteria; Enterobacterales;
OC   Enterobacteriaceae; Escherichia.
OX   NCBI_TaxID=562;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RX   PubMed=7773415; DOI=10.1099/13500872-141-5-1201;
RA   Thomas C.M., Smith C.A., Ibbotson J.P., Johnston L., Wang N.;
RT   "Evolution of the korA-oriV segment of promiscuous IncP plasmids.";
RL   Microbiology 141:1201-1210(1995).
RN   [2]
RP   NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RA   Thomas C.M., Johnston L., Yates C., Forster A.;
RL   Submitted (MAR-1996) to the EMBL/GenBank/DDBJ databases.
CC   -!- FUNCTION: In conjunction with KorB, inhibits the transcription of kilA,
CC       trfA and korAB operons. In conjunction with KorC is responsible for the
CC       negative control of kilC and kilE operons.
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DR   EMBL; U67194; AAC64422.1; -; Genomic_DNA.
DR   AlphaFoldDB; Q57423; -.
DR   SMR; Q57423; -.
DR   GO; GO:0003677; F:DNA binding; IEA:UniProtKB-KW.
DR   InterPro; IPR032428; TrfB.
DR   Pfam; PF16509; KORA; 1.
PE   4: Predicted;
KW   DNA-binding; Plasmid; Repressor; Transcription; Transcription regulation.
FT   CHAIN           1..100
FT                   /note="TrfB transcriptional repressor protein"
FT                   /id="PRO_0000068379"
FT   DNA_BIND        37..56
FT                   /note="H-T-H motif"
FT                   /evidence="ECO:0000255"
SQ   SEQUENCE   100 AA;  10973 MW;  6F05AC750014A8CF CRC64;
     MKKRLTEAQF QTAIKGLEIG QQTIDIARGV LVDGRPQAEF VTSLGLTKGA VSQAVSRVWA
     AAGEQLPEGF ERVTAVLPEH QAFIVKKWEA DAKRKQEPKS