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The copper transport in chloroplasts

Our results show that there are at least three independent transport systems in the chloroplast envelope of Arabidopsis thaliana.

Published on 30 June 2014

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In the chloroplast, plastocyanine, a protein essential for photosynthesis, uses Cu as a cofactor. The double mutant hma1 hma6 (B) although having a high growth retardation compared to a wild plant (A) is viable. This shows that Cu is still imported into the chloroplast to supply plastocyanine and thus suggests the existence of a third import route for this metal.

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