黄色荧光蛋白(英语:Yellow Fluorescent Protein,缩写YFP)是一种绿色荧光蛋白(GFP)的变体[1],能发出黄色荧光(激发峰517nm,发射峰527nm)[2],从GFP变为YFP至少需要蛋白质序列上四个氨基酸残基(aa)发生改变,其中最重要的是203号位的苏氨酸变为酪氨酸(T203Y)[1],常作为青色荧光蛋白(CFP)荧光共振能量转移的受体。
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