Abscisic acid influx into human nucleated cells occurs through the anion exchanger AE2 |
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Affiliation: | 1. Center for Genomic Medicine, Kyoto University Graduate School of Medicine, Kyoto, Japan;2. Faculty of Collaborative Regional Innovation, Ehime University, Matsuyama City, Ehime, Japan;3. Department of Geriatrics and Neurology, Ehime University Graduate School of Medicine, Toon City, Japan |
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Abstract: | Abscisic acid (ABA) is a hormone conserved from cyanobacteria to higher plants, where it regulates responses to environmental stimuli. ABA also plays a role in mammalian physiology, pointedly in inflammatory responses and in glycemic control. As the animal ABA receptor is on the intracellular side of the plasma membrane, a transporter is required for the hormone’s action. Here we demonstrate that ABA transport in human nucleated cells occurs via the anion exchanger AE2. Together with the recent demonstration that ABA influx into human erythrocytes occurs via Band 3, this result identifies the AE family members as the mammalian ABA transporters. |
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Keywords: | Abscisic acid (ABA) Transport Anion exchanger proteins (AE) AE2-siRNA K562 cells |
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