Transcriptional control of several aerobically induced cytochrome structural genes in Rhodobacter sphaeroides
Article Abstract:
Three Rhodobacter sphaeroides aerobic cytochrome gene promoters, ctaD, coxll and cycFG, were subjected to a research to determine how processes of energy-transducing enzymes react to anearobic and oxygen regulation. Cell growth analysis, media and genetic techniques, and primer extension analysis using operon fusions were the methods used. Findings revealed that the activity of the promoters increase under aerobic conditions and that aerobic cytochrome promoters also increase moderately after exposure to 30% oxygen. Furthermore, concentration of the Fnrl is not sufficient to intervene oxygen regulation of ctaD, coxyll and cycFG.
Publication Name: Microbiology
Subject: Biological sciences
ISSN: 1350-0872
Year: 1997
User Contributions:
Comment about this article or add new information about this topic:
Close proximity of the tdh, trh and ure genes on the chromosome of Vibrio parahaemolyticus
Article Abstract:
Vibrio parahaemolyticus is a cause of seafood-related gastroenteritis, and there are reports of clinical isolates producing the enzyme. It has been demonstrated that the urease-positive phenotype of V. parahaemolyticus strains is always linked to the possession of the trh gene. The distribution of the tdh, trh and ure genes among clinically isolated V. parahaemolyticus strains has been studied to give an insight into the putative ancient transfer of virulence-factor genes and establish the location of genes in the genomic DNA.
Publication Name: Microbiology
Subject: Biological sciences
ISSN: 1350-0872
Year: 1998
User Contributions:
Comment about this article or add new information about this topic:
- Abstracts: An anaphase calcium signal controls chromosome disjunction in early sea urchin embryos
- Abstracts: Transvection in the iab-5,6,7 region of the bithorax complex of Drosophila: homology independent interactions in trans
- Abstracts: Cloning and characterization of a Rhizobium leguminosarum gene encoding a bacteriocin with similarities to RTX toxins
- Abstracts: Biodegradation of ortho-cresol by a mixed culture of nitrate-reducing bacteria growing on toluene
- Abstracts: Events in the onset of neural crest cell migration are separable and inducible by protein kinase inhibitors. Pluripotent neural crest cells in the developing skin of the quail embryo