Figure 1:. Design of genetically encoded kinase… Figure 1:. Design of genetically encoded kinase activity reporters for PKA (AKAR). A, the design… Figure 1:. Design of genetically encoded kinase activity reporters for PKA (AKAR).A, the design of FRET-based AKAR. The FRET pair cyan fluorescent protein (CFP) and yellow fluorescent protein (YFP) flank the phosphoamino acid binding domain, forkhead associated domain 1 (FHA1), and a PKA-specific substrate, with the thre...