Manganous ions suppress photosynthesis gene expression in Rhodobacter sphaeroides

Article Abstract:

Experiments were performed to explore the effects of manganous ions (MnII) and ferrous ions on the photosynthesis expression genes in Rhodobacter sphaeroides. Results showed that lowered amounts of bacteriochlorophyll and carotenoid pigments were observed in the presence of MnII during phototrophic and chemotrophic growth of R. sphaeroides. Moreover, MnII was also observed to lower the expression of the puc operon which encodes the polypeptides of light-harvesting complex II.

Manganese, Manganese (Metal), Gene expression, Photosynthesis research, Iron compounds

---

Regulation of photosynthetic gene expression in purple bacteria

Article Abstract:

The main parts of purple bacteria involved in the regulation of photosynthetic gene expression were determined. They are the oxygen-responsive repressor PpsR and proteins which control its activity, such as AppA, the Reg/Prr activating system and at least in Rhodobacter sphaeroides, Fnr. Two lines of research are suggested. One is on in vitro characterization of the molecular behavior of the regulatory systems. Another is on how the different regulatory systems interact.

Genetic regulation, Bacteria, Photosynthetic, Photosynthetic bacteria

---

Similar abstracts:

• Abstracts: Photosynthesis gene expression in Rhodobacter sphaeroides is regulated by redox changes which are linked to electron transport
• Abstracts: The heat shock response in Xenopus oocytes, embryos, and somatic cells: a regulatory role for chromatin. Transcriptional activation of the matrix metalloproteinase gene stromelysin-3 coincides with thyroid hormone-induced cell death during frog metamorphosis
• Abstracts: Identification of bacteria in a biodegraded wall painting by denaturing gradient gel electrophoresis of PCR-amplified gene fragments coding for 16S rRNA
• Abstracts: Cloning overexpression, and mutagenesis of the Sporobolomyces salmonicolor AKU4429 gene encoding a new aldehyde reductase, which catalyzes the stereoselective reduction of ethyl 4-chloro-3-oxobutanoate to ethyl (S)-4-chloro-3-hydroxybutanoate
• Abstracts: Neuronal target recognition. Pak functions downstream of dock to regulate photoreceptor axon guidance in Drosophila

This website is not affiliated with document authors or copyright owners. This page is provided for informational purposes only. Unintentional errors are possible.