Phosphorylation at serine 52 and 635 does not alter the transport properties of glucosinolate transporter AtGTR1.
[No authors listed]
摘要
Little is known about how plants regulate transporters of defense compounds. In A. thaliana, glucosinolates are transported between tissues by NPF2.10 (AtGTR1) and NPF2.11 (AtGTR2). Mining of the PhosPhat4.0 database showed two cytosol exposed phosphorylation sites for AtGTR1 and one membrane-buried phosphorylation site for AtGTR2. In this study, we investigate whether mutation of the two potential regulatory sites of AtGTR1 affected transport of glucosinolates in Xenopus oocytes. Characterization of AtGTR1 phosphorylation mutants showed that phosphorylation of AtGTR1 - at the two reported phosphorylation sites - is not directly involved in regulating AtGTR1 transport activity. We hypothesize a role for AtGTR1-phosphorylation in regulating protein-protein interactions.
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基因功能
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原始数据
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文献解读
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