Dynamic PIN-FORMED auxin efflux carrier phosphorylation at the plasma membrane controls auxin efflux-dependent growth
Copyright policy )Dynamic PIN-FORMED auxin efflux carrier phosphorylation at the plasma membrane controls auxin efflux-dependent growth
SignificanceThe distribution of the hormone auxin controls most processes in plant development. Auxin distribution within the plant requires PIN transporters and efficient PIN-mediated transport requires PIN phosphorylation. Phosphorylation seemingly also controls auxin transport by targeting PINs to specific sides of the cell. Understanding how auxin is directed and activated through phosphorylation is essential to understand plant growth. Two different protein kinases targeting the same phosphosites in PIN1 can activate auxin efflux. Surprisingly, however, only one affects PIN1 polar distribution. Here, we show that the differential effects of the two kinases on PIN1 cannot be explained by phosphorylation at the established phosphosites, and suggest that a more complex model is needed to explain the effects of the kinase on PIN1 polarity.
- Technical University of Munich Germany
- University of Regensburg Germany
Brefeldin A, Indoleacetic Acids, Arabidopsis Proteins, Cell Membrane, Meristem, Arabidopsis, Cell Polarity, Membrane Transport Proteins, Biological Transport, Protein Serine-Threonine Kinases, Protein Transport, Organ Specificity, Amino Acid Sequence, Phosphorylation, Plant Structures, Protein Kinases, Protein Processing, Post-Translational, Sequence Alignment
Brefeldin A, Indoleacetic Acids, Arabidopsis Proteins, Cell Membrane, Meristem, Arabidopsis, Cell Polarity, Membrane Transport Proteins, Biological Transport, Protein Serine-Threonine Kinases, Protein Transport, Organ Specificity, Amino Acid Sequence, Phosphorylation, Plant Structures, Protein Kinases, Protein Processing, Post-Translational, Sequence Alignment
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