FIGURE 1.

Schematic representation of the structure of pTAS2R20 for functional experiments and amino acid sequence of SNP variations. (a) Amino acids mutated in Qinling pandas are shown as red dots. The FLAG epitopic tag was used to detect protein expression by immunohistochemistry, which is surrounded by the red box. Forty‐five amino acids of rat SSTR3, used as a cell surface‐targeting signal, are indicated with a green wavy line. (b) The two amino acid mutation sites of pTAS2R20. The red‐labeled amino acids are mutated positions 52 and 296 of the Qinling pandas’ pTAS2R20 amino acid sequence