TAS2R38是一种苦味味觉感受器[1][2]，该感受器可以尝出苯硫脲[3]和丙硫氧嘧啶[4]或者相关物质的苦味。这一点和大多数苦味感受器有所不同，即该感受器是对某类物质敏感，而大多数感受器则不会表现出强烈的选择性，能对多种物质做出响应[5]。该感受器所能尝出的相应物质大量存在于西兰花、卷心菜以及其它十字花科植物中[5]，例如：葡萄糖异硫氰酸盐及其相关产物异硫氰酸酯。目前全球人类中，约有75%该感受器相关基因正常，即，可以尝出苦味。而剩下的25%则无法尝出这类的苦味，或者敏感度较低[6]。 不过目前的研究表明该感受器相关基因的变异与否，并不是决定某个人是否此类苦味物质的超级品尝家的唯一因素。[7]
Quick Facts 味觉感受器，类型2，成员38, 标识 ...
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