Fluorescent proteins are used intensively in cytology, medicine biology and molecular fields as they remain the property of fluorescence excitable activity after fused with other proteins fluently. 荧光蛋白易于和其他蛋白融合,且融合后的荧光蛋白具有保持荧光激发活性的优点,其被广泛地应用于细胞学、医学和分子学领域。