GSK 4027 is a PCAF GCN5 bromodomain chemical probe. In a time-resolved fluorescence resonance energy transfer (TR-FRET) assay, it has a pIC50 of 7.4±0.11 for PCAF.
KMG-301AM, the acetoxy methyl esterified form of KMG-301, facilitates the acquisition of time-course and pseudo-colored images depicting the changes in mitochondrial fluorescence when stained with KMG-301.