Supramolecular organization of photosystem I and light-harvesting complex I in Chlamydomonas reinhardtii.

M. Germano, A.E. Yakushevska, W. Keegstra, H.J. van Gorkom, J.P. Dekker, E.J. Boekema

Research output: Contribution to JournalArticleAcademicpeer-review

Abstract

We report a structural characterization by electron microscopy and image analysis of a supramolecular complex consisting of photosystem I and light-harvesting complex I from the unicellular green alga Chlamydomonas reinhardtii. The complex is a monomer, has longest dimensions of 21.3 and 18.2 nm in projection, and is significantly larger than the corresponding complex in spinach. Comparison with photosystem I complexes from other organisms suggests that the complex contains about 14 light-harvesting proteins, two or three of which bind at the side of the PSI-H subunit. We suggest that special light-harvesting I proteins play a role in the binding of phosphorylated light-harvesting complex II in state 2. © 2002 Federation of European Biochemical Societies. Published by Elsevier Science B.V. All rights reserved.
Original languageEnglish
Pages (from-to)121-125
JournalFEBS Letters
Volume525
DOIs
Publication statusPublished - 2002

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