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Current Research in Photosynthesis pp 1791–1794Cite as

Heterogeneity of the Functional Antenna Size of Photosystem I from Spinach Thylakoids

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Abstract

We have recently fractionated the thylakoid membrane from spinach chloroplasts into two well separated vesicle populations (1). This was achieved by sonication and aqueous two-phase partitioning. A counter-current distribution diagram after such a fractionation is shown in Fig.1. The left peak comprises the grana derived α-vesicles while the right peak comprises the stroma derived β-vesicles. In this study we focused on examining the light harvesting properties of PSI of the two vesicle populations (PSIα and PSIβ respectively). We find different functional antenna sizes of PSI. PSIα has an antenna size about 30% larger than PSIβ. Our results imply that this heterogeneity in antenna size reflects the situation in the thylakoid membrane in vivo and is not due to any spill-over from PSII.

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References

  1. Andreasson, E., Svensson, P., Weibull, C. and Albertsson, P.-Å. (1988) Biochim. Biophys. Acta 936, 339–350

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  2. Melis, A., Svensson, P. and Albertsson, P.-Å. (1986) Biochim. Biophys. Acta 850, 402–412

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  4. Albertsson, P.-Å. (1988) Q. Rev. Biophys. 21, 61–98

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Author information

Authors and Affiliations

  1. Department of Biochemistry, University of Lund, P.O. Box 124, S-221 00, Lund, Sweden

    Eva Andreasson, Per Svensson & Per-Åke Albertsson

Authors
  1. Eva Andreasson
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  2. Per Svensson
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  3. Per-Åke Albertsson
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Editor information

Editors and Affiliations

  1. Department of Biochemistry, University of Stockholm, Stockholm, Sweden

    M. Baltscheffsky

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© 1990 Springer Science+Business Media New York

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Andreasson, E., Svensson, P., Albertsson, PÅ. (1990). Heterogeneity of the Functional Antenna Size of Photosystem I from Spinach Thylakoids. In: Baltscheffsky, M. (eds) Current Research in Photosynthesis. Springer, Dordrecht. https://doi.org/10.1007/978-94-009-0511-5_410

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  • DOI: https://doi.org/10.1007/978-94-009-0511-5_410

  • Publisher Name: Springer, Dordrecht

  • Print ISBN: 978-94-010-6716-4

  • Online ISBN: 978-94-009-0511-5

  • eBook Packages: Springer Book Archive

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