You are studying a transcription factor that is regulated by…

You are studying a transcription factor that is regulated by phosphorylation of serine residues, which inactivates its nuclear localization signal. How would mutating these serines to alanines affect subcellular localization of the transcription factor and expression of its target gene(s)?

Azacytosine is an analog of cytosine with an N instead of a…

Azacytosine is an analog of cytosine with an N instead of a C in the 5 position of the pyrimidine ring. It cannot be methylated and, when incorporated into DNA, inhibits the activity of DNA methyltransferases. What effect would growing cells in the presence of azacytosine have on gene expression?