ArticleThe New phytologist2026
TurboID-based proteomic profiling reveals proxitome of the IRT1 metal transporter and new insight into IRT1 endocytosis.
Article in The New phytologist, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Iron Regulated Transporter1 (IRT1) is the major root iron transporter responsible for broad-spectrum metal absorption in Arabidopsis thaliana root epidermal cells. Non-iron metal substrates of IRT1 were recently shown to regulate IRT1 cell surface levels by endocytosis and vacuolar degradation. TurboID-based proximity labeling was recently developed to detect protein-protein interactions and thus shed light on the intricate regulation of proteins in living cells. Although TurboID-based proximity labeling technology has been successfully established in mammals, its application in plant systems remains limited, especially for highly hydrophobic multispan transmembrane proteins. Here, we established TurboID for proximity labeling of IRT1 and identified 494 IRT1-specific proximal proteins, including the previously reported FYVE1 IRT1-interacting protein. To showcase the biological relevance of identified IRT1 proximal proteins, we further characterized the NHX5 Na
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