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The structure of CsNRT2.1 (A), alignment of NRT2.1 amino acid sequence from Cucumis sativus, Arabidopsis thaliana, Solanum lycopersicum, Hordeum vulgare, and Oryza sativa (B). Alignment was performed with DNAman. Exons, introns, and upstream/downstream in (A) were represented by black boxes, black lines, and gray boxes, respectively. The red lines indicated the transmembrane domain in (B).
