The Arabidopsis ATP-binding cassette protein AtMRP5/AtABCC5 is a high affinity inositol hexakisphosphate transporter involved in guard cell signaling and phytate storage.

@article{Nagy2009TheAA,
  title={The Arabidopsis ATP-binding cassette protein AtMRP5/AtABCC5 is a high affinity inositol hexakisphosphate transporter involved in guard cell signaling and phytate storage.},
  author={R{\'e}ka Nagy and Hanne Grob and Barbara Weder and Porntip Green and Markus Klein and Annie Frelet-Barrand and Jan Kofod Schjoerring and Charles A Brearley and Enrico Martinoia},
  journal={The Journal of biological chemistry},
  year={2009},
  volume={284 48},
  pages={33614-22}
}
Arabidopsis possesses a superfamily of ATP-binding cassette (ABC) transporters. Among these, the multidrug resistance-associated protein AtMRP5/AtABCC5 regulates stomatal aperture and controls plasma membrane anion channels of guard cells. Remarkably, despite the prominent role of AtMRP5 in conferring partial drought insensitivity upon Arabidopsis, we know little of the biochemical function of AtMRP5. Our phylogenetic analysis showed that AtMRP5 is closely related to maize MRP4, mutation of… CONTINUE READING
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