Journalartikel

Jahr der Veröffentlichung: 1985

Seiten: 6485-6489

Zeitschrift: Proceedings of the National Academy of Sciences

Bandnummer: 82

Heftnummer: 19

ISSN: 0027-8424

DOI Link: https://doi.org/10.1073/pnas.82.19.6485

Verlag: National Academy of Sciences

Abstract: 

Lowering of oxygen partial pressure in chemotrophic cultures or reduction of light intensity in phototrophic cultures of Rhodopseudomonas capsulata
induced formation of the photosynthetic apparatus. A maximum of mRNA
coding for the reaction center (RC) and the light-harvesting 1 B870
antenna complex polypeptides occurred 30 min after induction. Maximal
expression of mRNA for B800-B850 antenna proteins appeared with a lag
time of about 25 min after RC/B870 mRNA. Pigment-binding polypeptides
were inserted into the membrane immediately after mRNA synthesis. It is
concluded that the delayed formation of the B800-B850 complex compared
to the RC and the B870 complex is caused by sequential expression of the
corresponding genes. Biological activity of pigment-protein complexes
increased after the incorporation of their polypeptides parallel to the
maximum of bacteriochlorophyll synthesis. Studies on mutant strains
defective in the formation of pigment-protein complexes suggested that
pigment synthesis is of importance for assembly of stable complexes.

Harvard-Zitierstil: Klug, G., Kaufmann, N. and Drews, G. (1985) Gene expression of pigment-binding proteins of the bacterial photosynthetic apparatus: Transcription and assembly in the membrane of Rhodopseudomonas capsulata, Proceedings of the National Academy of Sciences, 82(19), pp. 6485-6489. https://doi.org/10.1073/pnas.82.19.6485

APA-Zitierstil: Klug, G., Kaufmann, N., & Drews, G. (1985). Gene expression of pigment-binding proteins of the bacterial photosynthetic apparatus: Transcription and assembly in the membrane of Rhodopseudomonas capsulata. Proceedings of the National Academy of Sciences. 82(19), 6485-6489. https://doi.org/10.1073/pnas.82.19.6485