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. 2021 May 21;10(6):1039. doi: 10.3390/plants10061039

Figure 1.

Figure 1

Motif structures for aquaporin (AQP) domains of each subfamily in pepper. The AQP domains consist of a total of 14 positions, and positions highlighted in red represent the location of four residues of ar/R selectivity filter. The y-axes indicate the number of genes containing each motif. The motif numbers written in bars indicate motif sequences described in Table S3. Numbers of motifs in pepper AQP domains are shown as a bar graph. Black arrows show locations of transmembrane helices and loops in motif positions of AQP domains. H1–H6, helix 1 to helix 6; LB, loop B; LE, loop E; PIP, plasma membrane intrinsic protein subfamily; TIP, tonoplast intrinsic protein subfamily; NIP, NOD26-like intrinsic protein subfamily; SIP, small basic intrinsic protein subfamily; XIP, uncategorized X intrinsic protein subfamily.