ID   REGA_RHOSU              Reviewed;         183 AA.
AC   O82868;
DT   30-MAY-2000, integrated into UniProtKB/Swiss-Prot.
DT   01-NOV-1998, sequence version 1.
DT   25-MAY-2022, entry version 92.
DE   RecName: Full=Photosynthetic apparatus regulatory protein RegA;
GN   Name=regA;
OS   Rhodovulum sulfidophilum (Rhodobacter sulfidophilus).
OC   Bacteria; Proteobacteria; Alphaproteobacteria; Rhodobacterales;
OC   Rhodobacteraceae; Rhodovulum.
OX   NCBI_TaxID=35806;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RA   Masuda S.;
RT   "Rhodovulum sulfidophilum photosynthetic regulatory genes.";
RL   Submitted (JAN-1998) to the EMBL/GenBank/DDBJ databases.
CC   -!- FUNCTION: Member of the two-component regulatory system RegB/RegA.
CC       Involved in transactivating anaerobic expression of the photosynthetic
CC       apparatus. It is a transcriptional regulator that is responsible for
CC       activating expression of the puf, puh, and puc operons in response to a
CC       decrease in oxygen tension (By similarity). {ECO:0000250}.
CC   -!- PTM: Phosphorylated by RegB. {ECO:0000305}.
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DR   EMBL; AB010722; BAA31474.1; -; Genomic_DNA.
DR   RefSeq; WP_042457995.1; NZ_MSYR01000001.1.
DR   AlphaFoldDB; O82868; -.
DR   SMR; O82868; -.
DR   STRING; 1188256.BASI01000001_gene851; -.
DR   GeneID; 62370094; -.
DR   eggNOG; COG4567; Bacteria.
DR   GO; GO:0043565; F:sequence-specific DNA binding; IEA:InterPro.
DR   GO; GO:0000160; P:phosphorelay signal transduction system; IEA:UniProtKB-KW.
DR   InterPro; IPR011006; CheY-like_superfamily.
DR   InterPro; IPR002197; HTH_Fis.
DR   InterPro; IPR001789; Sig_transdc_resp-reg_receiver.
DR   Pfam; PF02954; HTH_8; 1.
DR   Pfam; PF00072; Response_reg; 1.
DR   SMART; SM00448; REC; 1.
DR   SUPFAM; SSF52172; SSF52172; 1.
DR   PROSITE; PS50110; RESPONSE_REGULATORY; 1.
PE   3: Inferred from homology;
KW   Activator; DNA-binding; Phosphoprotein; Transcription;
KW   Transcription regulation; Two-component regulatory system.
FT   CHAIN           1..183
FT                   /note="Photosynthetic apparatus regulatory protein RegA"
FT                   /id="PRO_0000081217"
FT   DOMAIN          13..127
FT                   /note="Response regulatory"
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU00169"
FT   MOD_RES         62
FT                   /note="4-aspartylphosphate"
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU00169"
SQ   SEQUENCE   183 AA;  20219 MW;  394DB79D39AAB23F CRC64;
     MAEQEYEIGE DPSLLIVDDD EPFLRRLARA MEKRGFQPEM AETVAAGKAI ASARPPAYAV
     VDLRLEDGTG LDVVETLREK RPDAKIVVLT GYGAIATAVA AVKVGATDYL SKPADANDVT
     AALLSNGEAL PPPPENPMSA DRVRWEHIQR VYEQCDRNVS ETARRLNMHR RTLQRILAKR
     SPR