Fig. 4
The distribution of mEos3.2-tagged HI-NESS (green) and H2A-mTq2 (magenta) in the nuclei of HeLa cells in culture (Spinning disk microscopy, single Z-plane). In HeLa cells co-expressing mEos3.2-tagged HI-NESS and H2A-mTq2, the fluorescently-labelled histone exhibits extensive nucleolar retention, and consequently, stains the chromosomes with a low signal-to-noise ratio. The decreased nucleolar accumulation of HI-NESS allows chromosomes to be visualised with a higher signal-to-noise ratio. Line scans (marked in red with start and end positions indicated with S and E, respectively) across these nuclei highlight the effect of nucleolar retention on the signal over the rest of the nucleus. |