Variation of levels of mRNA coding for antenna and reaction center polypeptides in Rhodopseudomonas capsulata in response to changes in oxygen concentration
The effect of oxygen tension on the transcription of genes coding for the photosynthetic apparatus of Rhodopseudomonas capsulata was determined by the Southern hybridization technique. Restriction endonuclease digests of the R-prime plasmid pRPS404 and a subcloned fragment thereof served as DNA probes for genetically defined regions. The results showed that transcripts corresponding to the genes for certain pigment-binding polypeptides increase in amount by about 40-fold after a drop in oxygen tension. Transcripts hybridizing to genes involved in bacteriochlorophyll biosynthesis increase to a much lesser extent, and several genes involved in carotenoid biosynthesis are not affected by pO/sub 2/.
- Research Organization:
- Saint Louis Univ. School of Medicine, MO
- OSTI ID:
- 6168538
- Journal Information:
- J. Bacteriol.; (United States), Journal Name: J. Bacteriol.; (United States) Vol. 157:3; ISSN JOBAA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
59 BASIC BIOLOGICAL SCIENCES
BIOLOGICAL EFFECTS
BIOSYNTHESIS
CARBOXYLIC ACIDS
CELL CONSTITUENTS
CHLOROPHYLL
DNA
ELEMENTS
GENES
GENETIC ENGINEERING
HETEROCYCLIC ACIDS
HETEROCYCLIC COMPOUNDS
HYBRIDIZATION
MEMBRANES
MESSENGER-RNA
NONMETALS
NUCLEIC ACIDS
ORGANIC ACIDS
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
OXYGEN
PEPTIDES
PHOTOSYNTHETIC BACTERIA
PHOTOSYNTHETIC MEMBRANES
PHYTOCHROMES
PIGMENTS
PLASMIDS
POLYPEPTIDES
PORPHYRINS
PROTEINS
RECOMBINANT DNA
RNA
SYNTHESIS
TRANSCRIPTION