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A Molecular Gauge for Nitrogen Economy in Plants

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Presentation on theme: "A Molecular Gauge for Nitrogen Economy in Plants"— Presentation transcript:

1 A Molecular Gauge for Nitrogen Economy in Plants
Timothy R. Fallon, Jing-Ke Weng  Cell  Volume 159, Issue 5, Pages (November 2014) DOI: /j.cell Copyright © 2014 Elsevier Inc. Terms and Conditions

2 Figure 1 PII Proteins Directly Sense Glutamine for NAGK Activation and Arginine Biosynthesis in Plants, Except in Brassicaceae PII activates arginine biosynthesis by antagonizing the feedback inhibition of arginine upon the committed step of arginine biosynthesis, NAGK. In every plant taxa except Brassicaceae, the family that contains the model flowering plant Arabidopsis thaliana, glutamine is directly sensed by binding to a conserved C-terminal extension, termed the Q loop, of PII. In the case of Brassicaceae, glutamine is not required for activation of NAGK by PII. In both cases, bound ATP appears to be required for PII to antagonize NAGK feedback inhibition. Cell  , DOI: ( /j.cell ) Copyright © 2014 Elsevier Inc. Terms and Conditions

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