Figure 1. Schematic representation of the domain structure of Flamindo2.
Citrine is a mutant of yellow fluorescent protein (YFP). cDNAs for yellow fluorescent cAMP indicators, Flamindo and Flamindo2, were created by insertion of DNA fragments encoding the cAMP-binding domain of mEPAC1 (199–358) and N- and C- terminus linker peptides including restriction sites. Nucleus-targeted Flamindo2 (nlsFlamindo2) was created by fusion of NLS (nuclear localization signal; MPKKKRKVEDVDP) to the N-terminus of Flamindo2.