Rapid Vacuolar Sorting of the Borate Transporter BOR1 Requires the Adaptor Protein Complex AP-4 in Arabidopsis
Akira Yoshinari,
Yutaro Shimizu,
Takuya Hosokawa
et al.
Abstract:Plants maintain nutrient homeostasis by controlling the activities and abundance of nutrient transporters. InArabidopsis thaliana, the borate (B) transporter BOR1 plays a role in the efficient translocation of B under low-B conditions. BOR1 undergoes polyubiquitination in the presence of sufficient B and is then transported to the vacuole via multivesicular bodies (MVBs) to prevent B accumulation in tissues at a toxic level. A previous study indicated that BOR1 physically interacts with μ subunits of adaptor p… Show more
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