DOI: 10.1073/pnas.68.9.2278. The Isolation and Characterization of a Photochemically Active Complex from <i>Chloropseudomonas ethylica</i>

The Isolation and Characterization of a Photochemically Active Complex from Chloropseudomonas ethylica

10.1073/pnas.68.9.2278

Crossref journal-article

Proceedings of the National Academy of Sciences

Proceedings of the National Academy of Sciences (341)

Abstract

A photochemically active subcellular fraction has been isolated from the green bacterium Chloropseudomonas ethylica . It is enriched in bacteriochlorophyll a and contains only a small amount of Chlorobium chlorophyll. Both a reaction-center bleaching (P840) and a cytochrome oxidation (C553) are observed to occur in the fraction. Particles that are contained in the fraction are larger than 1.5 × 10 6 daltons and exhibit a range of sizes consistent with some form of polymeric association of similar subunits. Around 80 bacteriochlorophyll a molecules are present per P840. In an intact photosynthetic apparatus there are about 1000-1500 total chlorophylls (including Chlorobium chlorophyll) per reaction center. The redox potentials of the reaction center P840 and C553 were found to be 0.24 and 0.17 V, respectively, in one-electron reactions. The potentials of these components are around 0.2 V lower than comparable components found in other photosynthetic organisms.

Bibliography

Fowler, C. F., Nugent, N. A., & Fuller, R. C. (1971). The Isolation and Characterization of a Photochemically Active Complex from Chloropseudomonas ethylica. Proceedings of the National Academy of Sciences, 68(9), 2278â2282.

Authors 3

C. F. Fowler (first)
N. A. Nugent (additional)
R. C. Fuller (additional)

References 0 Referenced 74

None

Dates

Type	When
Created	19 years, 3 months ago (May 31, 2006, 2:30 a.m.)
Deposited	3 years, 4 months ago (April 13, 2022, 10:30 a.m.)
Indexed	3 weeks, 5 days ago (Aug. 6, 2025, 8:28 a.m.)
Issued	54 years ago (Sept. 1, 1971)
Published	54 years ago (Sept. 1, 1971)
Published Online	54 years ago (Sept. 1, 1971)
Published Print	54 years ago (Sept. 1, 1971)

Funders 0

None

BibTeX

@article{Fowler_1971, title={The Isolation and Characterization of a Photochemically Active Complex from Chloropseudomonas ethylica}, volume={68}, ISSN={1091-6490}, url={http://dx.doi.org/10.1073/pnas.68.9.2278}, DOI={10.1073/pnas.68.9.2278}, number={9}, journal={Proceedings of the National Academy of Sciences}, publisher={Proceedings of the National Academy of Sciences}, author={Fowler, C. F. and Nugent, N. A. and Fuller, R. C.}, year={1971}, month=sep, pages={2278–2282} }

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