Induction of transcription of GAL10, tagged with PP7
at the 5’ UTR. (A) Before induction there is no
transcription site, and only background levels of coat protein are visible.
(B) Upon induction with galactose, GAL10
transcription sites appear. (C) After long induction, the coat
protein is depleted from the nuclear, resulting in loss of visibility of the
transcription sites and nuclear staining. Shown are maximum intensity
projections of 9 z-planes, 150 ms exposure.