ID   PETR_RHOCB              Reviewed;         237 AA.
AC   P31079; D5ANZ1;
DT   01-JUL-1993, integrated into UniProtKB/Swiss-Prot.
DT   28-NOV-2006, sequence version 3.
DT   25-MAY-2022, entry version 113.
DE   RecName: Full=Protein PetR;
GN   Name=petR; OrderedLocusNames=RCAP_rcc02767;
OS   Rhodobacter capsulatus (strain ATCC BAA-309 / NBRC 16581 / SB1003).
OC   Bacteria; Proteobacteria; Alphaproteobacteria; Rhodobacterales;
OC   Rhodobacteraceae; Rhodobacter.
OX   NCBI_TaxID=272942;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [GENOMIC DNA], AND FUNCTION.
RC   STRAIN=MT1131;
RX   PubMed=1323023; DOI=10.1111/j.1365-2958.1992.tb00889.x;
RA   Tokito M.K., Daldal F.;
RT   "petR, located upstream of the fbcFBC operon encoding the cytochrome bc1
RT   complex, is homologous to bacterial response regulators and necessary for
RT   photosynthetic and respiratory growth of Rhodobacter capsulatus.";
RL   Mol. Microbiol. 6:1645-1654(1992).
RN   [2]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC BAA-309 / NBRC 16581 / SB1003;
RX   PubMed=20418398; DOI=10.1128/jb.00366-10;
RA   Strnad H., Lapidus A., Paces J., Ulbrich P., Vlcek C., Paces V.,
RA   Haselkorn R.;
RT   "Complete genome sequence of the photosynthetic purple nonsulfur bacterium
RT   Rhodobacter capsulatus SB 1003.";
RL   J. Bacteriol. 192:3545-3546(2010).
CC   -!- FUNCTION: Necessary for photosynthetic and respiratory growth. Probable
CC       promoter-specific protein mediating the interaction between DNA and RNA
CC       polymerase. {ECO:0000269|PubMed:1323023}.
CC   -!- CAUTION: It is uncertain whether Met-1 or Met-2 is the initiator.
CC       {ECO:0000305}.
CC   -!- SEQUENCE CAUTION:
CC       Sequence=CAA78098.2; Type=Erroneous initiation; Note=Truncated N-terminus.; Evidence={ECO:0000305};
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DR   EMBL; Z12113; CAA78098.2; ALT_INIT; Genomic_DNA.
DR   EMBL; CP001312; ADE86496.1; -; Genomic_DNA.
DR   PIR; S22632; S22632.
DR   RefSeq; WP_031321486.1; NC_014034.1.
DR   AlphaFoldDB; P31079; -.
DR   SMR; P31079; -.
DR   STRING; 272942.RCAP_rcc02767; -.
DR   EnsemblBacteria; ADE86496; ADE86496; RCAP_rcc02767.
DR   KEGG; rcp:RCAP_rcc02767; -.
DR   eggNOG; COG0745; Bacteria.
DR   HOGENOM; CLU_000445_30_4_5; -.
DR   OMA; YIQTHIG; -.
DR   OrthoDB; 817710at2; -.
DR   Proteomes; UP000002361; Chromosome.
DR   GO; GO:0003677; F:DNA binding; IEA:UniProtKB-KW.
DR   GO; GO:0000160; P:phosphorelay signal transduction system; IEA:UniProtKB-KW.
DR   GO; GO:0006355; P:regulation of transcription, DNA-templated; IEA:InterPro.
DR   CDD; cd00383; trans_reg_C; 1.
DR   Gene3D; 1.10.10.10; -; 1.
DR   InterPro; IPR011006; CheY-like_superfamily.
DR   InterPro; IPR001867; OmpR/PhoB-type_DNA-bd.
DR   InterPro; IPR016032; Sig_transdc_resp-reg_C-effctor.
DR   InterPro; IPR001789; Sig_transdc_resp-reg_receiver.
DR   InterPro; IPR039420; WalR-like.
DR   InterPro; IPR036388; WH-like_DNA-bd_sf.
DR   PANTHER; PTHR48111; PTHR48111; 1.
DR   Pfam; PF00072; Response_reg; 1.
DR   Pfam; PF00486; Trans_reg_C; 1.
DR   SMART; SM00448; REC; 1.
DR   SMART; SM00862; Trans_reg_C; 1.
DR   SUPFAM; SSF46894; SSF46894; 1.
DR   SUPFAM; SSF52172; SSF52172; 1.
DR   PROSITE; PS51755; OMPR_PHOB; 1.
DR   PROSITE; PS50110; RESPONSE_REGULATORY; 1.
PE   3: Inferred from homology;
KW   Activator; DNA-binding; Phosphoprotein; Reference proteome; Transcription;
KW   Transcription regulation; Two-component regulatory system.
FT   CHAIN           1..237
FT                   /note="Protein PetR"
FT                   /id="PRO_0000081183"
FT   DOMAIN          8..121
FT                   /note="Response regulatory"
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU00169"
FT   DNA_BIND        77..95
FT                   /note="H-T-H motif"
FT                   /evidence="ECO:0000250"
FT   DNA_BIND        132..236
FT                   /note="OmpR/PhoB-type"
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU01091"
FT   MOD_RES         57
FT                   /note="4-aspartylphosphate"
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU00169"
SQ   SEQUENCE   237 AA;  26355 MW;  4E3B8D95F70162EB CRC64;
     MMSASPPHLL IVDDDERIRG LLQKFLIRNG FLVTAGRDAA HARRLLSGLE FNLIVLDVMM
     PGEDGLSLTR DLRTKMATPI LLLTARGETR ERIEGLEAGA DDYLPKPFEP KELLLRINAI
     LRRVPEAVTA GPKYLSLGPL RYDLDRGELS QGDQPVRLTA TEAALMRIFA AHAGEVIGRT
     ELIEELGRDR SASAEEAAGD RAVDVQITRL RRKIEPDPRE PRYLQTVRGL GYMLAPD