| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 2053290 | FEBS Letters | 2005 | 6 Pages |
Abstract
In plant chloroplasts two superoxide dismutase (SOD) activities occur, FeSOD and Cu/ZnSOD, with reciprocal regulation in response to copper availability. This system presents a unique model to study the regulation of metal-cofactor delivery to an organelle. The Arabidopsis thaliana gene AtCCS encodes a functional homolog to yeast Ccs1p/Lys7p, a copper chaperone for SOD. The AtCCS protein was localized to chloroplasts where it may supply copper to the stromal Cu/ZnSOD. AtCCS mRNA expression levels are upregulated in response to Cu-feeding and senescence. We propose that AtCCS expression is regulated to allow the most optimal use of Cu for photosynthesis.
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Agricultural and Biological Sciences
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Authors
Salah E. Abdel-Ghany, Jason L. Burkhead, Kathryn A. Gogolin, Nuria Andrés-Colás, Jared R. Bodecker, Sergi Puig, Lola Peñarrubia, Marinus Pilon,