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. 2014 May 13;15(5):8473–8490. doi: 10.3390/ijms15058473

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© 2014 by the authors; licensee MDPI, Basel, Switzerland

This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution license (http://creativecommons.org/licenses/by/3.0/).

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Figure 5. — AtMYB44 reduces the inhibitory effect of RCAR1/PYL9 on ABI1 phosphatase activity in vitro. ABI1 phosphatase activity was determined using p-nitrophenyl phosphate (pNPP) as the substrate in the absence (open bars) or presence (filled bars) of 10 μM ABA. The concentrations of each protein component were 0.5 μM for ABI1, 5 μM for RCAR1/PYL9, and 10 μM for GST-AtMYB44 or GST. The relative phosphatase activity of each reaction was normalized against the reaction containing substrate and ABI1 (100%). Data are means ± SD from three independent experiments.