ID   OCCR_RHIML              Reviewed;         297 AA.
AC   P72294;
DT   30-MAY-2000, integrated into UniProtKB/Swiss-Prot.
DT   01-FEB-1997, sequence version 1.
DT   25-MAY-2022, entry version 80.
DE   RecName: Full=Octopine catabolism/uptake operon regulatory protein OccR;
GN   Name=occR;
OS   Rhizobium meliloti (Ensifer meliloti) (Sinorhizobium meliloti).
OC   Bacteria; Proteobacteria; Alphaproteobacteria; Hyphomicrobiales;
OC   Rhizobiaceae; Sinorhizobium/Ensifer group; Sinorhizobium.
OX   NCBI_TaxID=382;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RC   STRAIN=A3;
RA   Au S., Bergeron J., Dion P.;
RT   "The octopine catabolism operon of Rhizobium meliloti A3.";
RL   Submitted (AUG-1996) to the EMBL/GenBank/DDBJ databases.
CC   -!- FUNCTION: Positive regulatory protein for the occ operon involved in
CC       octopine catabolism and uptake. Also acts as a negative regulator of
CC       its expression.
CC   -!- SIMILARITY: Belongs to the LysR transcriptional regulatory family.
CC       {ECO:0000305}.
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DR   EMBL; U66830; AAB07517.1; -; Genomic_DNA.
DR   AlphaFoldDB; P72294; -.
DR   SMR; P72294; -.
DR   GO; GO:0003677; F:DNA binding; IEA:UniProtKB-KW.
DR   GO; GO:0003700; F:DNA-binding transcription factor activity; IEA:InterPro.
DR   CDD; cd08457; PBP2_OccR; 1.
DR   Gene3D; 1.10.10.10; -; 1.
DR   InterPro; IPR005119; LysR_subst-bd.
DR   InterPro; IPR037415; OccR_PBP2.
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   SUPFAM; SSF46785; SSF46785; 1.
DR   PROSITE; PS50931; HTH_LYSR; 1.
PE   3: Inferred from homology;
KW   Activator; DNA-binding; Transcription; Transcription regulation.
FT   CHAIN           1..297
FT                   /note="Octopine catabolism/uptake operon regulatory protein
FT                   OccR"
FT                   /id="PRO_0000105698"
FT   DOMAIN          1..58
FT                   /note="HTH lysR-type"
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU00253"
FT   DNA_BIND        18..37
FT                   /note="H-T-H motif"
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU00253"
SQ   SEQUENCE   297 AA;  32159 MW;  CA02DF0BA92824E7 CRC64;
     MNLRQVEAFR AVMLTGQMTA AAELMLVTQP AISRLIKDFE RATKLQLFER RGNHIIPTQE
     AKTLWEEVDR AFVGLNHIGN LAADIGRQAA GTLRIAAMPA LANGFLPRFL AQFLHKPKLQ
     VSLMGLPSSM VMEAVASGRA DIGYADGPSE RQGFLIETRS LPAMVAVPMG HRLAGLDRIT
     PQEPGGERII KQETGTLFAM RVEVAIGSIL RRPSLEVSLS HTALSLVREA AGIAIIDPTA
     AIEFKDSIAL RPFSIFIDAG FLEVRSANGA PSTVVDRFAT EFSSFHDALM AQSGLIS