The membrane-bound electron-transfer components of aerobically grown Chromatium vinosum

Wynn, R. Max; Kämpf, Charlotte; Gaul, Dale F.; Choi, Won Ki; Shaw, Robert W.; Knaff, David B.

doi:10.1016/0005-2728(85)90030-1

Cited by 8 publications

(1 citation statement)

References 48 publications

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“…The components of secondary electron transport in C. aurantiacus have also been studied but are less defined than those of the purple bacterial systems. Wynn et al (16) have used the ability of Chromatium vinosum to grow aerobically in darkness (8) and noted differences in secondary electron transport components (viz. cytochromes) from the cells grown anaerobically in light.…”

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Oxygen regulation of development of the photosynthetic membrane system in Chloroflexus aurantiacus

Foster¹,

Redlinger²,

Blankenship³

et al. 1986

J Bacteriol

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Oxygen levels which control induction of the assembly of the pigment-protein photosynthetic polypeptides in dark-grown Chloroflexus aurantiacus were determined. The induction signal by low-oxygen tension is not directly related to the respiratory competence of these photosynthetic cells. Cytochrome c554, the primary electron donor to P865+ of the reaction center, is not present in dark-grown respiratory cells but is induced in parallel with bacteriochlorophylls a and c and at similar oxygen partial pressure. The development of these components of the photosynthetic apparatus and its electron transport chain is completely independent of the presence of any detectable light or bacteriochlorophyll c or a pigments in C. aurantiacus.

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confidence: 99%

Oxygen regulation of development of the photosynthetic membrane system in Chloroflexus aurantiacus

Foster¹,

Redlinger²,

Blankenship³

et al. 1986

J Bacteriol

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Chemoautotrophic growth of Thiocystis violacea, Chromatium gracile and C. vinosum in the dark at various O₂‐concentrations

Kämpf

Pfennig

1986

J. Basic Microbiol.

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Tlie influence of various 0,-concentrations on chemoautotrophic growth was dcterniincd in thc range from microaerobic t o aerobic conditions. Chromatium vinosurn D, Thiocystis violacea 231 1 and Chromatiurn yracile 25-1 were grown chemoautotropliically using consecutively repeated batch riiltures. Rapid growth of all thrce strains occurred only under microaerobic conditions. Thc fastcst growth (1.c = 0.058) was obtained with Chromatium gracile 25-1 grown in the prcsence of 1 mg 0, . 1 -l. For optimal chemoautotrophic growth aulfur-containing cells had to bc supplied continuously with cxtracellular electron donor. Multiplication of Thiocystis violacea 231 1 and Chromatiwn gracile 25-1 was significantly inhibited after several cell generations, while Chromatiurn winosum D could be grown unlimited. I n case of the latter bacterium any given 0,-concentration determined il unique growth rate and a unique specific bclil a content. The analysis of absorption spect.ra of whole cclls revealed that different pigment complexes were regulated separately by oxygen. Growth yields were not dependent on the 0,-concentration. A growth yield of 12 g dry cell mass per mol of thiosulfate oxidized was determined for Chromatium vinosum D growing in the micro-to semiaerobic 0,-concentration range. When compared to phototrophically grown cells, the catalase content of chemotrophically grown cells was 2 times lower while the maximal specific respiration rate of the cells was 7 times higher. The ecological significance of the kinetics of chemotrophic growth under various growth conditions is discussed.

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Sulfur Compounds as Photosynthetic Electron Donors

Brune

Advances in Photosynthesis and Respiration

106

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The membrane-bound electron-transfer components of aerobically grown Chromatium vinosum

Cited by 8 publications

References 48 publications

Oxygen regulation of development of the photosynthetic membrane system in Chloroflexus aurantiacus

Oxygen regulation of development of the photosynthetic membrane system in Chloroflexus aurantiacus

Chemoautotrophic growth of Thiocystis violacea, Chromatium gracile and C. vinosum in the dark at various O₂‐concentrations

Sulfur Compounds as Photosynthetic Electron Donors

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The membrane-bound electron-transfer components of aerobically grown Chromatium vinosum

Cited by 8 publications

References 48 publications

Oxygen regulation of development of the photosynthetic membrane system in Chloroflexus aurantiacus

Oxygen regulation of development of the photosynthetic membrane system in Chloroflexus aurantiacus

Chemoautotrophic growth of Thiocystis violacea, Chromatium gracile and C. vinosum in the dark at various O2‐concentrations

Sulfur Compounds as Photosynthetic Electron Donors

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Chemoautotrophic growth of Thiocystis violacea, Chromatium gracile and C. vinosum in the dark at various O₂‐concentrations