UAS drives expression of the entire Rnor\Camk2a coding sequence, mutated to carry a T286A amino acid substitution (this prevents autophosphorylation), and tagged at the N-terminal end with ReaCh (a non-radiative yellow fluorescent protein variant) and at the C-terminal end with mEGFP. Shows an attenuated and more transient change in fluorescence resonance energy transfer (FRET) between the two fluorophores upon activation of Rnor\Camk2a compared to 'green-Camuiα' (which contains a wild-type T286 autophosphorylation site) (details from PMID:19295602).