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  Protein-protein and protein-function relationships in Arabidopsis photosystem I: cluster analysis of PSI polypeptide levels and photosynthetic parameters in PSI mutants

Pesaresi, P., Varotto, C., Richly, E., Lessnick, A., Salamini, F., & Leister, D. (2003). Protein-protein and protein-function relationships in Arabidopsis photosystem I: cluster analysis of PSI polypeptide levels and photosynthetic parameters in PSI mutants. Journal of Plant Physiology, 160(1), 17-22.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0012-3D10-4 Version Permalink: http://hdl.handle.net/11858/00-001M-0000-0012-3D12-F
Genre: Journal Article

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 Creators:
Pesaresi, P.1, Author              
Varotto, C.1, 2, Author              
Richly, E.1, Author              
Lessnick, A., Author
Salamini, F.1, Author              
Leister, D.1, Author              
Affiliations:
1Dept. of Plant Breeding and Yield Physiology (Francesco Salamini), MPI for Plant Breeding Research, Max Planck Society, ou_1113570              
2Dept. of Molecular Plant Genetics (Heinz Saedler), MPI for Plant Breeding Research, Max Planck Society, ou_1113568              

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Free keywords: Arabidopsis thaliana; hierarchical clustering; mutant; photosystem L; polypeptide; state transition
 Abstract: In flowering plants, photosystem I (PSI) mediates electron transport across the thylakoid membrane and contains at least 14 proteins. The availability of co-suppression and/or mutant lines deficient for individual PSI polypeptides in Arabidopsis thaliana allows one to assign functions to PSI subunits. We have performed cluster analysis on an extensive set of data on PSI polypeptide levels in ten different PSI mutants. This type of analysis serves to group proteins that exhibit similar changes in amount in different genotypes, and also identifies genotypes which show similar PSI compositions. The interdependence of levels of PSI-C, -D and -E, of -H and -L, and of Lhca2 and 3, which was previously proposed based on the study of single genotypes or on cross-linking experiments, was confirmed by our analyses. In addition, the levels of the lumenal subunits F and N are found to be interdependent. The incorporation of photosynthetic parameters into the cluster analysis revealed that the level of photosynthetic state transitions correlates with the abundance of PSI-H in all 8 genotypes tested, supporting the hypothesis that PSI-H serves as a docking site for LHCII during state transitions.

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Language(s): eng - English
 Dates: 2003-01
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Method: Peer
 Identifiers: eDoc: 28757
ISI: 000180912800004
 Degree: -

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Title: Journal of Plant Physiology
  Alternative Title : J. Plant Physiol.
Source Genre: Journal
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Publ. Info: -
Pages: - Volume / Issue: 160 (1) Sequence Number: - Start / End Page: 17 - 22 Identifier: ISSN: 0176-1617