Molecular characterization and gene expression of lhcb5 gene encoding CP26 in the light-harvesting complexII of Chlamydomonas reinhardtii

Molecular characterization and gene expression of lhcb5 gene encoding CP26 in the... We isolated and sequenced a cDNA clone encoding a minor chlorophyll a/b-binding protein, CP26, which is associated with the light-harvesting complex II of Chlamydomonas reinhardtii. Protein sequences of internal peptide fragments from purified CP26 were determined and used to identify a cDNA clone. The 1.1 kb lhcb5 gene codes for a polypeptide of 289 amino acids with a predicted molecular weight of 30 713. The lhcb5 gene product could reconstitute with chlorophylls and xanthophylls to form a green band on a gel. Although the expression of many lhcb genes are strictly regulated by light, the lhcb5 gene was only loosely regulated. We propose that a plant acclimatizes itself to the light environment by quantitatively and qualitatively modulating the light-harvesting complex. Characterization of the primary structure and the implications of its unique expression are discussed. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Plant Molecular Biology Springer Journals

Molecular characterization and gene expression of lhcb5 gene encoding CP26 in the light-harvesting complexII of Chlamydomonas reinhardtii

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Publisher
Kluwer Academic Publishers
Copyright
Copyright © 2001 by Kluwer Academic Publishers
Subject
Life Sciences; Biochemistry, general; Plant Sciences; Plant Pathology
ISSN
0167-4412
eISSN
1573-5028
D.O.I.
10.1023/A:1010643408100
Publisher site
See Article on Publisher Site

Abstract

We isolated and sequenced a cDNA clone encoding a minor chlorophyll a/b-binding protein, CP26, which is associated with the light-harvesting complex II of Chlamydomonas reinhardtii. Protein sequences of internal peptide fragments from purified CP26 were determined and used to identify a cDNA clone. The 1.1 kb lhcb5 gene codes for a polypeptide of 289 amino acids with a predicted molecular weight of 30 713. The lhcb5 gene product could reconstitute with chlorophylls and xanthophylls to form a green band on a gel. Although the expression of many lhcb genes are strictly regulated by light, the lhcb5 gene was only loosely regulated. We propose that a plant acclimatizes itself to the light environment by quantitatively and qualitatively modulating the light-harvesting complex. Characterization of the primary structure and the implications of its unique expression are discussed.

Journal

Plant Molecular BiologySpringer Journals

Published: Oct 3, 2004

References

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