Abstract
The aromatic amino acids L-phenylalanine and L-tyrosine and their plant-derived natural products are essential in human and plant metabolism and physiology. Here we identified Petunia hybrida and Arabidopsis thaliana genes encoding prephenate aminotransferases (PPA-ATs), thus completing the identification of the genes involved in phenylalanine and tyrosine biosyntheses. Biochemical and genetic characterization of enzymes showed that PPA-AT directs carbon flux from prephenate toward arogenate, making the arogenate pathway predominant in plant phenylalanine biosynthesis.
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Change history
10 December 2010
In the version of this article initially published, the word “prephenate” was inadvertently switched to “phenylalanine” in the eighth paragraph. The error has been corrected in the HTML and PDF versions of the article.
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Acknowledgements
We thank J. Zheng and C.M. Kish (Purdue University) for technical assistance in the quantitative real-time PCR experiments, G. Taguchi and E. Pichersky (University of Michigan) for the pLISG vector and N. Bonawitz, D. Rhodes (Purdue University) and members of Dudareva laboratory for critical reading of the manuscript. This work was supported by the US Agriculture and Food Research Initiative competitive grant no. 2010-65115-20385 from US Department of Agriculture National Institute of Food and Agriculture and by grant MCB-0615700 from the US National Science Foundation to N.D. H.M. was supported in part by the Japan Society for the Promotion of Science Postdoctoral Fellowship for Research Abroad.
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H.M. and N.D. designed research; H.M. and H.Y. performed experiments; H.M., H.Y. and N.D. analyzed data; H.M. and N.D. wrote the paper. All authors read and edited the manuscript.
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Maeda, H., Yoo, H. & Dudareva, N. Prephenate aminotransferase directs plant phenylalanine biosynthesis via arogenate. Nat Chem Biol 7, 19–21 (2011). https://doi.org/10.1038/nchembio.485
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DOI: https://doi.org/10.1038/nchembio.485
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