ID   RBCR_TRIV2              Reviewed;         337 AA.
AC   Q3MCB5;
DT   06-MAR-2007, integrated into UniProtKB/Swiss-Prot.
DT   25-OCT-2005, sequence version 1.
DT   25-MAY-2022, entry version 93.
DE   RecName: Full=Probable RuBisCO transcriptional regulator;
GN   Name=rbcR; OrderedLocusNames=Ava_1749;
OS   Trichormus variabilis (strain ATCC 29413 / PCC 7937) (Anabaena variabilis).
OC   Bacteria; Cyanobacteria; Nostocales; Nostocaceae; Trichormus.
OX   NCBI_TaxID=240292;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC 29413 / PCC 7937;
RX   PubMed=25197444; DOI=10.4056/sigs.3899418;
RA   Thiel T., Pratte B.S., Zhong J., Goodwin L., Copeland A., Lucas S., Han C.,
RA   Pitluck S., Land M.L., Kyrpides N.C., Woyke T.;
RT   "Complete genome sequence of Anabaena variabilis ATCC 29413.";
RL   Stand. Genomic Sci. 9:562-573(2014).
CC   -!- FUNCTION: Trans-acting transcriptional regulator of RuBisCO genes (rbcL
CC       and rbcS) expression. {ECO:0000250}.
CC   -!- SIMILARITY: Belongs to the LysR transcriptional regulatory family.
CC       {ECO:0000305}.
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DR   EMBL; CP000117; ABA21371.1; -; Genomic_DNA.
DR   AlphaFoldDB; Q3MCB5; -.
DR   SMR; Q3MCB5; -.
DR   STRING; 240292.Ava_1749; -.
DR   EnsemblBacteria; ABA21371; ABA21371; Ava_1749.
DR   KEGG; ava:Ava_1749; -.
DR   eggNOG; COG0583; Bacteria.
DR   HOGENOM; CLU_039613_6_1_3; -.
DR   OMA; DQALDIC; -.
DR   Proteomes; UP000002533; Chromosome.
DR   GO; GO:0003677; F:DNA binding; IEA:UniProtKB-KW.
DR   GO; GO:0003700; F:DNA-binding transcription factor activity; IEA:InterPro.
DR   Gene3D; 1.10.10.10; -; 1.
DR   InterPro; IPR005119; LysR_subst-bd.
DR   InterPro; IPR000847; Tscrpt_reg_HTH_LysR.
DR   InterPro; IPR036388; WH-like_DNA-bd_sf.
DR   InterPro; IPR036390; WH_DNA-bd_sf.
DR   Pfam; PF00126; HTH_1; 1.
DR   Pfam; PF03466; LysR_substrate; 1.
DR   PRINTS; PR00039; HTHLYSR.
DR   SUPFAM; SSF46785; SSF46785; 1.
DR   PROSITE; PS50931; HTH_LYSR; 1.
PE   3: Inferred from homology;
KW   DNA-binding; Transcription; Transcription regulation.
FT   CHAIN           1..337
FT                   /note="Probable RuBisCO transcriptional regulator"
FT                   /id="PRO_0000280081"
FT   DOMAIN          6..63
FT                   /note="HTH lysR-type"
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU00253"
FT   DNA_BIND        23..42
FT                   /note="H-T-H motif"
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU00253"
SQ   SEQUENCE   337 AA;  37486 MW;  26E6DB0B28DFA99F CRC64;
     MSDLPFTLDQ LRILKAIAVE GSFKRAADSL YVSQPAVSLQ VQNLERQLDV PLFDRGGRRA
     QLTEAGHLLL NYGEKILSLC QETCRAIEDL QNLQGGTLIV GASQTTGTYL LPKMIGMFRQ
     KYPDVAVQLH VHSTRRTAWS VANGQVDLAI IGGEIPGELT ESLEIIPYAE DELALILPVF
     HPFTKQETIQ KEDLYKLQFI TLDSQSTIRK VIDQVLSRSE IDTRRFKIEM ELNSIEAIKN
     AVQSGLGAAF VSTSAIAKEL QMGVLHCTPI DGVVIKRTLW LIFNPNRYRS KAAEAFSQEI
     LPQFATPDWN QDVLKLVQKK LVVNVLDAAI PNTSDDG