Presence of Tas2r genes in seven species in the order Carnivora.

Note: Only Tas2rs with a predicted intact open reading frame in at least one species in Carnivora are listed. +, intact gene present; ps, predicted gene is pseudogenized due to either open reading frame-shifting mutations or premature stop codons;—, Tas2r ortholog is not found in the genome database from that species. Numbers in parentheses are those used in Li and Zhang [6];*, nomenclature of predicted Tas2r in NCBI. The seal Tas2r38 (+?) has a longer N-terminal and a predicted octahelical transmembrane domain, so it is uncertain of whether it is intact. For walrus, Tas2r40 (+?) lacks the prototypic seven-transmembrane helices for G-protein-coupled receptors and is thus unlikely to be functional [23].Presence of Tas2r genes in seven species in the order Carnivora.注：仅收录食肉目（Carnivora）中至少一个物种存在预测完整开放阅读框的2型味觉受体（Tas2r）基因。+：存在完整功能基因；ps：预测基因因开放阅读框移码突变或提前终止密码子发生假基因化；—：该物种的基因组数据库中未找到Tas2r同源基因。括号内的数字为Li与Zhang[6]文献中使用的编号；星号（*）代表该预测Tas2r的命名来自NCBI数据库。海豹的Tas2r38（+？）具有更长的N端区域与预测的八螺旋跨膜结构域，因此其完整性尚未确定。海象的Tas2r40（+？）缺失G蛋白偶联受体典型的七跨膜螺旋结构，因此大概率不具备生物学功能[23]。本数据集展示了食肉目7个物种的Tas2r基因存在情况。