Genetically encoded phenyl azide photochemistry drives positive and negative functional modulation of a red fluorescent protein

Abstract

The photochemical properties of phenyl azide have been exploited to modulate the function of a red autofluorescent protein, mCherry. Using genetic code reprogramming, phenyl azide chemistry has been introduced at functionally strategic positions in mCherry leading to deactivation, activation or enhancement upon UV irradiation.