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Connecting the dots: How light receptors get their message across
Date:6/24/2010

r seedlings emerge from the ground," says Chen. "But nobody knew what the trigger was."

Although chloroplasts contain their own tiny genome, most proteins necessary for chloroplast maturation are encoded in the nucleus and need to be directed to their final destination. In order to ensure proper chloroplast differentiation, gene expression in the nucleus needs to be coordinated with gene expression in the chloroplast. "A protein that travels to both organelles could serve as a simple yet elegant solution to ensure coordinated gene activity in both locales," says Chory. "Although we do not know what HEMERA is doing in the chloroplast, its presence in both the nucleus and chloroplast would ensure that the seedling has a rapid and appropriate response to light when it emerges from the soil."


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Contact: Gina Kirchweger
kirchweger@salk.edu
858-453-410-01340
Salk Institute
Source:Eurekalert  

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