The present invention relates to a method of modulating cellular activity. More particularly, the present invention provides a method of modulating apoptosis by modulating protein 14-3-3 phosphorylation and, thereby its functionality. The present invention still further extends to methods for identifying agents capable of modulating protein 14-3-3 phosphorylation. The method and molecules of the present invention are useful, inter alia, in the treatment and/or prophylaxis of conditions characterized by unwanted cellular activity, such as unwanted cell survival.