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. 2021 Dec 16;19(1):65–70. doi: 10.1038/s41592-021-01341-x

Extended Data Fig. 3. Brightness comparison of HaloTag variants in mammalian cells by confocal microscopy.

Extended Data Fig. 3

a-i Violin plots of normalized fluorescence intensities from living U-2 OS cells stably expressing HaloTag7, HaloTag9, HaloTag10, or HaloTag11 in the cytosol. Cells were labeled with different fluorophores (1 μm, 3 h) and imaged by confocal microscopy. SiR-CA (a), JF635-CA (b), JF629-CA (c), JF626-CA (d), JF614-CA (e), CPY-CA (f), MaP618-CA (g), TMR-CA (h), and MaP555-CA (i). Distribution = light gray/blue, box = 25%–75% percentile, whiskers = 5%–95% percentile, white line = median, circle = mean, dashed line = mean of HaloTag7, N = 120, 121, 120, 121 (SiR); 120, 121, 120, 120 (JF635-CA); 129, 123, 114, 117 (JF629-CA); 121, 120, 120, 120 (JF626-CA); 120, 124, 120, 120 (JF614-CA); all 120 (CPY-CA); 120, 120, 120, 121 (MaP618-CA); 120, 120, 120, 121 (TMR-CA); 121, 120, 120, 120 (MaP555-CA) cells (left to right) from three independent preparations (Supplementary Table 16).

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