ppsR

Summary

Gene Symbol: ppsR
Description: Transcriptional regulator, PpsR
Species: Rhodobacter sphaeroides 2.4.1

Top Publications

  1. Gomelsky L, Moskvin O, Stenzel R, Jones D, Donohue T, Gomelsky M. Hierarchical regulation of photosynthesis gene expression by the oxygen-responsive PrrBA and AppA-PpsR systems of Rhodobacter sphaeroides. J Bacteriol. 2008;190:8106-14 pubmed publisher
    ..Decreased oxygen also results in inactivation of the photosynthesis-specific repressor PpsR, bringing about derepression of the puc, bch, and crt operons...
  2. Penfold R, Pemberton J. Sequencing, chromosomal inactivation, and functional expression in Escherichia coli of ppsR, a gene which represses carotenoid and bacteriochlorophyll synthesis in Rhodobacter sphaeroides. J Bacteriol. 1994;176:2869-76 pubmed
    ..suppression of bacteriochlorophyll and carotenoid levels in Rhodobacter sphaeroides revealed two genes: orf-192 and ppsR. The ppsR gene alone is sufficient for photopigment suppression. Inactivation of the R...
  3. J ger A, Braatsch S, Haberzettl K, Metz S, Osterloh L, Han Y, et al. The AppA and PpsR proteins from Rhodobacter sphaeroides can establish a redox-dependent signal chain but fail to transmit blue-light signals in other bacteria. J Bacteriol. 2007;189:2274-82 pubmed publisher
    ..In response to decreasing oxygen tension, AppA antagonizes the transcriptional regulator PpsR, which represses the expression of photosynthesis genes, including the puc operon...
  4. Yamazaki Y, Fukusumi H, Kamikubo H, Kataoka M. Role of the N-terminal region in the function of the photosynthetic bacterium transcription regulator PpsR. Photochem Photobiol. 2008;84:839-44 pubmed publisher
    b>PpsR is a transcription repressor for the gene cluster encoding photosystem genes in Rhodobacter sphaeroides...
  5. Metz S, J ger A, Klug G. In vivo sensitivity of blue-light-dependent signaling mediated by AppA/PpsR or PrrB/PrrA in Rhodobacter sphaeroides. J Bacteriol. 2009;191:4473-7 pubmed publisher
    ..photosynthesis complexes in Rhodobacter sphaeroides is regulated in a redox- and light-dependent manner by the AppA/PpsR and PrrB/PrrA systems...
  6. Yin L, Dragnea V, Bauer C. PpsR, a regulator of heme and bacteriochlorophyll biosynthesis, is a heme-sensing protein. J Biol Chem. 2012;287:13850-8 pubmed publisher
    ..In this study, we demonstrate that FLAG-tagged PpsR isolated from Rhodobacter sphaeroides cells contains bound heme...
  7. Fedotova Y, Zeilstra Ryalls J. Analysis of the role of PrrA, PpsR, and FnrL in intracytoplasmic membrane differentiation of Rhodobacter sphaeroides 2.4.1 using transmission electron microscopy. Photosynth Res. 2014;119:283-90 pubmed publisher
    ..PrrA, PpsR, and FnrL are global regulatory proteins mediating oxygen control of gene expression in this organism...
  8. Gomelsky M, Horne I, Lee H, Pemberton J, McEwan A, Kaplan S. Domain structure, oligomeric state, and mutational analysis of PpsR, the Rhodobacter sphaeroides repressor of photosystem gene expression. J Bacteriol. 2000;182:2253-61 pubmed
    The transcription factor PpsR from the facultative photoheterotroph Rhodobacter sphaeroides is involved in repression of photosystem gene expression under aerobic growth conditions...